SCIENTIFIC ABSTRACT NIKIFOROV, G.D. - NIKIFOROV, L.G.

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SCIENTIFIC ABSTRACT
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- '9_ 1/20 -35-58 AUTHCR: Nikiforov, G.D., Candidate of Technical Sciences TITLEs Automatic Are Welding of "A?,!g6T"-Alloy Sheets by a Melting Electrode Over a Flux Layer (Avtomaticheskaya dugovaya avarka plavyashchimaya elektrodom po sloyu flyusa listov iz splava Aldg6T) PERIODICAL: Svarochnoye proizvodstvo, 1958, Nr 8, pp 7-10 (USSR) ABSTRACT: A new alloy ("Amg6T") of good weldability and a compar- atively high strength, containing 6.5% magnesium, upto 0.7% manganese and up to 0.3% titanium, was recently de- veloped. Fist tests to weld this alloy over a layer of "MATI-l" and "MATI-5" fluxes (composition given in table 1), carried out with the participation of Yu. S. Dolgov, Senior Teacher and A.G. Makhortova, Assistant, Engineer, revealed abundant gas liberation caused by magnesium eva- poration. fielding "Allg6V-alloy :)lates of ( - 9 mm thick- nesa of a MATI-10 flux layer gives weld joints of a strength similar to that of the base metal. As magnesium losses re- duce ths strength of the sesm metal, measures must be taken to increase magnesium content in the seam metal. In welding Card 112 "AMg6T"-alloys, the use of flux which contains a consider- 135-58-6-2/20 Automatic Are Welding of "A.Mg6T'l-Alloy Sheets by a Melting Electrode Over a Flux Layer able amount of sodium fluoride must be avoided. hietallo- graphic investigations did not reveal any considerable grain growth in zones adjacent to seams. There are 6 tables, 3 photos, 1 graph, 1 drawing and 2 Soviet refer- ences. ASSOCIATION: MATI 1. Are welding-Automatic 2. Arc welding--Electrodes 3. Metal alloys--Applica-uions Card 2/2 Nlk/ FOKo\/ C' 25 (1) AUT9OR: Maslov, G. A., Docent, Scientific Secretary of the ';;Plding Section TITLE: A 3ummary of Work Done by the Welding 3ections of NTO MAShP;iOM in lq5A ( I tot'ri raboty sektsiy -,varki NTO XA.3hF~1- M za 1958 F,) PE~IODICAL: Svarochnoye proizvodstvo, 1959, Nr 4, pp 42 - 44 (Uo3:~"' ABSTRACT: Conferences organized by the central (TsP) and the 21 existing oblast' Welding Sections of NTO MAShPHOM are listed, starting with 3 All-Union conferences held in 19--,-',, The Sections activities included the organization of con- ferences, courses (seminars), excursions to plarits ivith'.n the USSR and reports of members after journeys abroad, lectures and competitions. Annual sessions on scientific and practicf-tl welding work have become traditional with -r~e Moscow and Leningrad Sections. Contacts with foreign welding crganizat,_ons have been extended, and the TsF was represented at the Vienna congress of the International Card 1/3 Welding Institute by Professors K. V. Lyubavskay and SOV/- A Summary of Work Done by the Welding Sections of UTO 1AAShPROM in 1958 N. 0. Okerblom. It has been accepted as member of tne Institute and iq preparin,,, for the next international ccn- gress, at which there will be a competition for the best work on repair welding. Candidate of Technical '.;ciences G. D. Nikiforov (Moscow), Engineer V. G. Radchenko (Darnaui/ and Candidate of Technical Sciences I. R. Patskevich (Chelyabinsk'), took part in the conference in Hungary, where G. D. Nikiforov read a report "Automatic Arc "Ne'ding Alumi m Alloys", apd V, ~;. Hadchenko "Electric Slag Welding in Building Boilers. Professor K. V. Lyubavskiy and Engineer Ye. P. L'vova were at the conference in Czechoslo- vakia. The following salient facts are also mentioned; 1) The Rostov Section directed work on the use of natural gas for welding and the method is being employed at the plants "Rostsel'mash", "Krasnyy Aksay", "Prodmash", "Nefte- mash", "Krasnyy Kotellghchik" and others; 2) the Rostov Sovnarkhoz started construction of an electrode factory at Kraonyy Sulin on the recommendation of the Rostov 'Seetionj 3) there is a competition in progress for the best work on Card 2/3 development and practical introduction of advanced welding A Summary of Work Done by the 7o'elding Sections of NTO ?/AShFRG!t' in 19a technique, with 116 NTO members participating and 29 projec'3 submitted (the results will be published in the following issue, Nr 5, of this periodical). The TsP nas been desig- nated to coordinate work in the field of welding in t*-e country and addressed all NTOs on this matter. The first result was an All-Union conference on "he pros.oective deve- lopment of welding, organized by the '~osplan of the UIZS:'I,, TNIIESO, MK and ITTO MAShPRO.M. ASSOCIATION: TsP NTO MA3hPROM. Card 3/3 8368! S/135/6o/ooo/m/003/015 bo 0 q A0061AOOI AUTHORS- Nikiforov...G- D-1 Candidate of Technical Sciences, Makhortova, Engineer TITLE- A Method of Determining Hydrogen Content in Seam Metal and the Equipment Used PERIODICAL: Svarocnnoye proizvodstvo, 1960, No. 10, PP. 13-16 TEXT: At the department "Technology of the Welding Practice" of KATI a method was developed an an equipment devised for determining the hydrogen content in Al welds. Two 7 mm thick pure aluminum plates with an initial H content of 0.08 cm3/100 g, were welded on a copper backing in argon atmosphere with consumable electrodes of 1.3 = diameter and 0.62 o;3/100 H content, Specimens were turned from the central portion of the weld joint and stored in tetrachloride carbon. The determination of H was made by the method of vacuum extraction on an installation developed with the assistance of A. P. Gudchenko, using a palladium capillary instead of an oxidizer. The method is based or, the heating of the specimen to a temperature at which a sufficiently effective H liberation takes place. Heating is performed in a vacuum and the amount of gas liberated is determined from changes :in the pressure at a given volume of the Card 1/2 83681 S/135/60/000/010/003/015 A006/AO01 A Method of Determining Hydrogen Content in Seam Metal and the Equipment Used system. The installation (Fig. 1, 2) includes both an extracting and analyzing system. The extracting system consists of a preheating furnace with a quartz tube, a charge device, diffusion pumps and mercury seals. The analyzlrg sy~teln includes a compression manometer for the measurement of the gas pressure, A gas-collecting balloon and a palladium capillary placed in a heater, Evazua-13-n is performed by a forevacuum oil pump and two mercury vapor diffusion Pumps. The installation ensures high hermeticity and accuracy of measurement of the changes in the volume. The total H content In the metal is found by sunning up the hydrogen in the pores and in the solution. The H content In the solution is determined by vacuum extraction; H in the pores is found by the weight method. Special experiments were made to set up optimum eSnditions of H analysis a* an initial H content in the ingot as hIgh as 0.69 cm /100 g, which are; prelimirar-)r evacuation time; 2.5 hours; time of extraction from the specimen: I hour, time of H diffusion through the capillary: 10 min. The method and eWuipmen-. may be used to determine hydrogen In the seam when welding various metalls, to study kinetics of H and metal interaction during welding process; to determine the effect of H on the proper-ties of the seam metal and to reveal varlous da-fe2ts arising in the weld joints. There are 4 tables, 7 figures, and 2 Soviet refer-_nreE. ASSOCIATIONS, MATI 18(7) .3UV/135_ -59-6-8/20 i,,UTHOR: Nikiforov, G. D. , Candid~~te Of 'i*cchnical 3cicnces TITLL: Comparison of Methods of Estimating Weld Metals Porosity PE'RIODICAL: Svarochnoye Proizvodstvo, 1959, Nr 6, pp 26-29 NISSR) z0STR,LT: The author compares methods of evaluating, the poraalty Of weld metal. A new method , 4 has been developed by MATI. The metal is evalui,ted, and the seam porosit~i is founci by fixing the loss of weight of the metal. Engineer ~. G. Makhortcvs part i - cipated in the experimental part of the inv~_,Atigation. A model for the evalurition comparison method of deter- mining the porosity of seam welds is given in Figure 2. An evaluation instrument is shown in Figure 3. Figure c~ 4 shows the exterior of the seams of the model. The investi,,,ation was done on 4 se,-ns of a KJI-31 plate (8 mm) which had been produced by weluing conditions of the model. Table 2 re,3resents the results of the evaluation comparison method of determining weld metal Card 1/2 porosity. In Figure 4 there are the photographs of the SOV/135-59-6-3/20 Comparison of Methods of Estimating Weld Metals Porosity cxterior of the seams, the radiograp.s, the macro- and micro- sections, and the fractions of I.he modcl. The author states that the evAuation comparison meLhod is a more objective way ot determining the clegree of poro- sity of weld -metals. Even the ~;mallsst degree of poro- sity is !:tatr~d. The application of this rethod in con- nection with the re thod of roentgenizing and the in- vestigntion of the macro- anc! micro-sections ;,.nd frac- tions of the scai-.,,s proven the pos-,ibili!y of de',-extutining the smallest dc 'rees oF porosity and of the (lif7t-.-ibution of the Pores in the seom ~.;relds. There are R diagrams and 3 Soviet references. AS-;OCI,',.TION: Kafedra Taklinologiya svarochnogo p,-oizvodstva 1.1,01 (Chair of Technology of delding, Pro(-uction RATI) Card 2/2 i Z3vo 89666 s,/:35/61/000/'003/002/014 A00f,/AOOI AUTHORS Nikif-crov 13 Sc-i-2n-as, A. Conditiona :D." bore Forma-Ior, Wrian WeldllrA Al-.imlln,.~rn 'Ind -,-,s Alloys FERI OD"17AL 5varo-_.nnoye Pp. '-5-Q M - EXT Amerous IrvesIlgations have sh~~wr. -.r-al *.r-e tasl~ ca"e for the appearance of pores 1.7~ '.fte metal durl-9 and weliing of al,_imilnum and _'-s alloys, is the libr.,ratio.-. dissolved c.~'. of the metal during coc 1 Th_~ 07".gina-~,Or Df ~i -ne metal deperds -,n f ol-ow-rig bas'.- -zndi,~ior_s ti-Ie hydrogen !.-~ %to, ~utlble aras-.-ne higher tra:~-, the external prf~ssurs; a magrl-.ude of radius (r---.> --v- 00) must be p7esen,~ ir, m of mcl-c-u-ax hydrogen C-~ft_ , .3 P. be-suffl-_.Iently hign. 'he al,~hrrs _alxulated ~hanize2 _,n ro fdro�!n pressure depend- '~ng on its concentra*.ion ir. tne meta' at 660, 703, 7~,O and 800 -, ani de-,ermineal I minimum valut~s of the rsA~ll of" mi-ro::wrltles, ae-z-assari fc- ~,,-e f:)rmat~'Gr, of tubbles at the samp- :emperatures and at differen,. ,on_-e:~t7atlons of hydrogen gIver, In Fi d h w ~.t, a ilssolved In -he pool. 'he resuits obtained are q' g-~, e an s o ard 1/7 0-,-QC,C 31! 35/6 1/00-0/003/002/014 A,)06/AOG-' ~-ondltlons of, Pore Formation Wher. We-d..ig A'umlnum and Alloys 0, the formation of bubbles a-: 600 1 o--'-urs a-, rqdrrogen concen-rations of 0 7, 0.8 and 0 '~ e h a mln'-Mum rad 5 - -9 cm3/100 g In ~h& presence of mi-irc--av! 1, s wi-.. '-- cf 0.357; 0,03135, ar4d 0.0192 mm respe,-,.~ve--y. A'~ -~,~Tn~eratares -,ne hydroger- concer, 'r a4' I or~ In 1~h,~ p30: M%;E-~ re , J-'Igr~pr. To --ne sfcrsmen,~-,oned da-,a the a,.j-rcrs ~-arned ou-,: experimental weldl.--g and tf.~-' I'dir-g-up Cf aluminum plates con'aining 0.08 :m3,,,o,,,) g hydrogeri, using imm wire wL-~h 0.06 azid O.C-2 cM3 /iOO g. hydrogen, Welding of planes and t~:!J:Lng u; of teads was made wl'~h 240 amps current-,, 17 v arz vol-age; !8 m/nr w6-)J-,,-,g speed Argon with a dew poi-rt minus 35 - 411; C was -u2ed The differer-,; hyd.-~,ger. eon'.,e-~; in the welds was assurel by different trestment of thA plates arid t?.e., wircE. 'r.r- nyarogen ~orl~~en- in *-he weld -as dete-mineJ with' *--2 aid of metno-dis an.J eqalpment developed by MA72,' (Ref - 1) Resul-.s cbtainad are given Ir. Table 1 and Flgire 3. The da'~a obtained show that the formation of pores in tne weld metal is observed only at a hydrogen concentra- tion of over 0.7 cm3/100 g. At a !Rsser -ontent of dissolved hydrogen, pores were not revealed; -.his confirms the aforemer.-zloned ~,or,.Lepts. At a hydrogen content within 0.7 - 1,3 cm3/loo g, the amount of rydrogen in the aclutlon and the pores increases proportionally tr. the total --on.-.ert of hydrogen r. the weld- At a Card 2/7 89666 S/135/61/000/003/002/014 A0061AO01 Conditions -of Pore Formation When Welding Aluminum and its Alloys higher hydrogen concentration in the metal itz content in the solution remains practically constant attaining 1.5 - 1.7 cm31100 g. All the hydrogen above this limit is separated out in the form of pores. The authors based their concepts on the assumption that the liquid metal suffers an I-atm pressure from the surround- ing atmosphere. This is applicable for pure aluminum. When welding aluminum alloys, a portion of the liquid enclosed between the crystals, which were already formed, is not subjected to external pressure. In this case bubble formation can be expected at an internal pressure below I atm, and, consequently, at a lower hydrogen concentration in the pool. The possibility Is investigated of eliminat- ing hydrogen bubbles floating up in the pool. It can be assumed that degassing- of the metal as a result of the floating up of bubbles is only possible at a hydrogen concentration in the pool exceeding 0.69 em3/100 g. The conclusion is drawn that the elimination of bubbles depends on the initial hydrogen concentraticn in the pool. Under conditions of metal cooling, as in welding, the elimination of bubbles from the pool is only possible when welding gasified metal and Is hardly .probable in the case of a metal with a relatively low content of dissolved hydro- gen. To check these conclusions the authors determined the hydrogen content of beads welded on aluminum plates with a different hydrogen content, using 1.3 mm Card 317 89666 3/135/61/000/003/002/014 A006/AO01 Condiiions of Pore Formation When Welding Aluminum and its Alloys aluminum wire with different degrees of gasification. Data obtained (Table 2) confirm the aforementioned concepts, insofar as the total-hydrogen content in the weld and the pores decreases at a higher Initial Figure 2: hydrogen concentration in the pool. The distribution of pores in the weld metal Is also in a satisfactory r A wj -;7 agreement with the theories presented. Mm I I; Figure 2: r Changes in the hydrogen pressure P and minimum 5 values of the radius r of nucleNalon micro- m;Ln cavities depending on the concentration of [H]S 4 4 dissolved in the metal for 660, 700, 750r, and 8000C. Card 4/7 I 89666 S/135/61/000/003/002/014 A0061AOOI Conditions of Pore Formation When Welding Aluminum and Its Alloys Figure 3: Hydrogen distribution in the weld metal between the pores and the'solution a) Total hqdrogen content in the weld,~Hla b) Hydrogen content in the solution [I S c) Hydrogen content in the.pores [H] pore Card 5/7 W66 3/135/61/000/003/002/014 A0061AO01 Conditions of'Pore Formation When Welding Aluminu and its Alloys Table 1: Hyd-:-ogen concentration in cm3/10() g Hydrogen coijeentration. in the weld metal in cm-3/100 jz In the in the in the weld- e wel, n in the solu- in the pores total plates wire Ing pool pool tion EHIS [H] p0 [H] initial itial ~ a o.o8 0.62 0.3582 0. 3582 o.684 - o.685 o.o8 0.62 0.2906 0.2906 0.884 0.17 1.064 o.o8 o.o8 0.08 0.54 - 0.54 0.08 o.o8 o.o8 0.59 0.59 o.o8 0.62 0.737 0.72 o.o64 0.784 0.08 o.62 0.2582 o.687 o.687 o.o8 0.62 0.2582 0.789 0.108 0.897 0,08 0*62 0*2906 0,172 0,17 0,012 o.o8 .0.62 0.3338 0.98 0.28 1* 26 o.o8 0.62 0.2744 o.819 0.13 0.949 o.o8 o.62 0.2582 o.89 0.16 1.050 Card 6/7 89666 31.13r,161100010031(-YJ21014 A004,1A001 Conditions of Pore Formation When Welding Al-Lnin'm ard ts Alioys Table 2.- 3 Hydrogen ooncentrat'lon In cm POG g Hydro5e, In the weld metal Ir ~m /100 g In the In trie In 'he In the , I In the total plates wing we~dlng l o f.. u Sol " jz -1 pore o p o o8 (1 o,-8 48 0 945 0.694. 44 0 945 0 62 0 844--- i 0 3 Th,ere are figur6s, 2 ~ab,'es &r,,d 3 Sovle-, referen:eti, ABSCP-^IA,T_,;.ON-. MAT7 ard 7 /7 20226 d ida e- 0 f T e --hn 1:~ a 5 G Niklfcrov, 7&n 1-n e- e r ny~ 3f r. IT, cp 'AL ar -~ncy,? --ma- i -n in wpld~ng cf 3'-~mlrjM -3:.1 1 s 3, -Y - Y en sol,.,ed ar , t, n m c -,ydr oger. so-u- f r--T, -n~ F,:7 aL - ar r r :Prt~raticr. in wt!.dlig p.~-- -~,h:,re - - 1TIor da-.a 3n p r ot -1 em, wni pr ede~t c- rmines po-- m-umi-nm 7 TTn w- jP under -.ne foilDwIlrg 240 amp -urrent, v a-: on z, .n. n 1/mIr.; d 4. ame f f E w-',- - :~p~~d 1E rr,/hri argon ~:f ~--atlrg tt.-~ 50 e J T-,' and -.ht- ,il plai-es and w,--c- w r.-ad- fy--r af r 2 02 2 6 A006/A i,~i i ed at MAT! ty semi-continuous casting. Hydrogen oontent in ~-ne ty -.razium eera.~tlon, Plates rolled frorr the ingots were treated by various variants given in lat'le i. After welding, the hy~rcg~r In tal was determi-ned using methods and eq,,41pment des,~rlted ir. Ref obtained show that in all tne ~_xperlmental welds an lncreas~ in +.n4-. A tent was ocserved as 2ompared to its initial , oncentra,~I_)n In tne volume cf pores in the weld me~-.al depends on th-11r. hydrogmr. for.mat-Ion of the firs-, pores was observed a-. hydrogen per 1.00 g of metal. :t was found -hat the basi-~ sour:,e of hydrDgen wa_~ -Z~e MCI~- ,ure absorbed on the surface of the wire ar-d tne naze metal. ments were 2arried out to determine "he amoun-. of hydrogen !Iterated d~rlng ing up to 6501C from -.he wire and plate surface, treated differen`4 ;~r,5 af~,t7 dlffer-~,nt storage t-Ime (Fig. 2, 3) . As a result of the experimental the following recommendations are given to prevent pare forma*-cr, '.r. *,%a we~'.~ durl:,-g weldIng of A! and its alioy5L 1. Etching of -,he wire &,,d -,he Ti:-_ Fn:_I-_ be performed in a solution of ortbophosphoric acid by variant I some cases the wire should be ele 3tropol I shed. it is not -idqe_~ with an iron brush, 2 S-,;--,:-.age of t-rie wire and .he parl.s f -- zr~.re t-an 5 - 6 days should be avoided . Gloves sno-~ald ::e w.* -:.,z ..ne wire irto the r-ontainer, :t is recommended to -use 3. ~, az~d 2/4 C 20226 S/I 35/6 l/G0(j/~,(;4/OC2/ ) "'2 A006/A 10 1 ,:our~les of Hydrogen Solurle In the Weld Metal During Welding qf Aluminum that I-,s spe:,~ific surface and consequently the amount of hydrogen' additionally d!9- F-31-,red Ir. the weld mie-~al might be reduced. 4. The part of the base meTal In -.h.? formation 3f the weld stould be increased, Therefort? waldlng sro",_~ ne-~ per- fc--ned on 1-niensIvely oooled oDpper plates having on their -.irface a -,f adScrbed moist-are, The latter may par!A:Ipate in the reaAlor. with the -'It&! and oause additional hydrogen diascivi-rig in -,,he Pool. 5, Wlrl~ a:ad f rcm a ~t:a,d Irto a wanm sno--ld nc' be we:ded Ir- p-r-Ier-, -__)ni9nSatl~r. of 7-.'D.~3_ -.;re ~r tneir s-.irfa~us, wr,.,:,. is n, artificia-, wi~ 4 1_ _e t-,~Lng. F~_-.-.her _: vestigations shv.11d b.,i dire-ted rr, -,--e developmqrzt ef effi_-Ien,~ reIr-..ds Df pr- pa-Ing -.hE zjrfac~-.s r," pa.:-ts, ~,nd ~n zr-ff!~Ient storage Drxd!,~I:~ns. Mearz n49 in ,te gaseo.~s p?iase int,: :cmp-.iri-i~: wh,.~h arn are e r z~ n _-i the me+,a, 9--? Stable t iie, ~.emperat-,_7_ an,f f Ig--res, and ~, 3c-vle-, :e_~ ASSOCIA7:N: MAT-_ Card 3/6 20226 135/6 1 4/C~, 2/',-, 12 A006/A I ) I 3-ur~es of Hydrogen So'-,,,;t.e iri tn,~ Weld Metal Djrl:-Z Weldir4z nf -ab Nunber of, '-Om-osltion 0' pres~-rlp- et,~hipg tath t I On 2 Card 4/6 3 OrthsphDephorlc a~:td 2c, --m,3, potasSium tiiirc- mate 0.01 - 0.~3 gi water 1,00c: ~x- Caustic soda 50 gi water 1,000 :!m3 y c' sr-'~ir4z an-~ s-ut- 7ec~uic:oz sequent tr,~atmen-. a -.:- temp e K ~7t :.r time 15 T,.n; wai,~,.:-,g In wa- water, r-~bt-'rig wlt% a -Ir-th Washing in c:;:,d Drying at 600--. Bath temperature 6,-"-cC, Et~rlng -,.Ime :Irj mn. WashIng n ~ol- r-Anning water. Claryfyir,~; In 1`1 % M03 sDlutilor al, 6 d~izkt- L--g in warm wa,~I~r, W~-hlpg in -old water. D--,ving at 60 C. ' 2 2% S/135 1%0P/004/002/012 A006/A101 Sources of Hydrogen Soluble in the Weld Figure 2: Changes in the hydrogen content- liberated from 1 cm2 of plate sur, faces differently treated: A - I storage for 24 h; B - storage fcr r-)-. 10 iays; I - without additional treatment; II - with additional treatment prior to analysis a) etching in a solution of ortho- phosphoric acid with addition of potassium bichromate; b) Etching in alkaline solution; c ) Volume of hydrogen liberated; d) cleaned with metallic brush; e) cleaned During Welding of Aluminum A A I A ZA r II -Pitc. 2. Himevense KOAMUCTIR IIOAOPOAS. *WAeAXjMeMCX x1goc" axacrux. nPOtneAmKx P&MIMM OOP&OOrKy: Axpaxemme c7,-!: B - XplNeuve 10 craK: I - 6e2 jA. C AQ0N'IXI9T"bXOA OdpaGOTWO n"eA andIRMANMed in acetone; g) with brush and washed in CCl - f) Cleaned with brush Cleaned with brush and washeVin benzine; h) cleaned with brush and washed in C04 1) Clean'ed with brush and washed in CC14; k) cleaned with brush Card 5/6 20226 S/135/61/000/004/002/012 A006/AlOl Sources of Hydrogen Soluble in the Weld Metal During Welding of Aluminum Fix~re 3: Changes in the hydrogen content liberat- ed from 1 =2 of wire surfice different- -d in ly treated: I - the-wire was etche a solution of or~hophosphorio acid with addition of potassium bichromate; II wire after eleotropolishing a) Yolume of hydrogen liberated b) Washed in CC1 - etched in a solution of orthophosphorle, acid with addition of potassium bichromate o) Washed in COI and roasted at 4000C 4 for 1 h. Card 6/6 PXC-t- SUN""" =A"ft-TV* 9*4aPO". RUAGANIOULVOC4 C I CAP MCI- WRKWw" "POWAGRY. 11960 KI p"Ps"404 5 Ron "Pos""A Mae "On"OtIOAMP"Ir". 43291 S/135/69/000/012/001/0,',5 A006/A1101 AUTHORS: Nikiforov, G. D., Candidate of Technical Solomon, Silantlyeva, n Me, r TITLE: Nucleation and development of pores in welding AMr6 (Amg6) alloy PrRIODICAL: 5varochnoye proizvodstvo, no. 12, 1962, 1 - 5 TEXT: Information is given on results of Investigating pore formation in welding beads onto AMg6 alloy plates with a wire of the same material and of pure aluminum. It was found that pores are formed in welding the A1Mg6 alloy, as a result of a developed interaction between the liquid metal and the moisture, contained in the particles of the oxide film; these particles are present in the welding pool when the base and filler metal have melted. At a greater thick- ness of the oxide film, the effect of moisture may be inhibited until completed crystaliization stages. Then, besides pores of regular shape, which have par- tially floated up to the surface, cavities of irregular, branched shape are formed as a result of displacement of eutectic by liberated hydrogen. ailging of the metal In weld adjacent zones and the appearance of cracks in the joints, Card 1/2 3/ 135/62VOGO/C1 Nucleation and development of ... A006/A1O! which have been previously produced by multi-pass welding, are connected with diffusioii of hydrogen dissolved into microcavities and with the Increasing pres- sure inside same. The basic measure to prevent pore formation in welding the AMg6 alloy is a reduction of the oxide film thickness on the surface of the wire and the parts to be welded. For Vils purpose It is recommended to conduct the welding process with a wire, plated with pure aluminum or having a polished sur- facq. There are 8 figures and 3 tables. ASSOCIATION: MATI Card 2,12 ,NILMRkV,__Q,D,, kand.tekhn.nauk; SIIANTIYEVA, S.A., inzh.; KAINOVA, G.Ye., inzh. Measures to control porosities in welding the AMg6 alloy. Svar. proizv. no.lt26-29 Ja 163. (MDU 16:2) 1. Moskovskiy aviatsionnyy tekhnologicheskiy institut. (Aluminum-manganese alloys-Velding) AcammiSR: AT4MZM 8/29ft/63/000/OW/01"/0240 AUTWU MIldforovg Go Do; Zh1zv7a1wrq So No; MahWarp Do I.; Dazuetm, Ye. Ya. T3!rlZ: SAP fusion ve2dlng SOURCE: Alymdnlyevy*ye splavy*o 3bornik stateyo no* 2* SpechenaV*ye splavy0o Moscar, 1963j, 135-140 TOPIC MkGS: aluninuas sintered aluminun, alumimm padder, sintered alumdnm powder, SAP, alumimun welding,, SAP welding, fusion veldIng, axe velUng ABSTRACT: The low susceptibility of SAP to welding interferes vith its vider ,;a as a Ught., heat-resistaat material. A variety of welding tests (submerged are welding wit'a cm AlAg6 aluminum alloy filler ro&,, argon subaerged are velAing vith a t=q.,-.sten electrode),were cmductedo It ves concluded that SAP produced. by the co=on process is unfit for fusion veld4n bixt that modified W,, developed by the authors, cmapares veU with ct1mr aluninun alloys In both argon- and sWzwgo& arc fmion veldingo The ultimate strength of the veUls obtained amounts to 24-28 1 k9/=2 at room towDeMbure ana to 5-6 ki/=2 at 5=. A better manufacturing tenbno'ca and ve3ding Procedure =w bring the famar ngum up to 30-35 4 V M-2. Prolonged treatmmt of the veMs at 400-5= ban no affect on tbair mWaste C013t at ram temogamtureo Wgo arto b": 7 r1gaw =A 2 toWme ACCESSION NR: AT4012724 ASSOCIATION: none SUBMITTED: 00 SUB CODE: ML DATE ACQ: 13Feb64 NO REF SOV: 000 ENCL: 00 OTHEK&* 000 Card 2/2 ACCESSION NRt AP4040693 S/0135/64/000/006/0001/0004 AUTHORs Hikiforov, 0. D. (Candidate of technical sciences); ZhLznyakov, TITLEt Veldability of heat-resistant SAP material in fusion welding iSOURCE: Svarochnoye proizvodstvc. no. 6 (630). 1964. 1-4 TOPIC TACSt sintered aluminum powder, SAP, SAP weldability, SAP lifusion welding, SAP weld, wild property, TIC weld, MIC weld 1ABSTRACT: The unsatisfactory weldability of SAP-parts noted in fusion welding is caused chiefly by the p'ressnce of oxidelfilms en- veloping each metal particle. The weldability can be greatly im- :proved by vacuum annealing of SAP billets at 650--i-680C prior to rolling. Weldable SAP sheets are obtained in this way. Thar have higher ductility and almost the same tensile and yield strength as those of conventionally processed SAP sheets, Weldable SAP sheets can be successfully welded with an argon ~hL~IJ~d are, with or vLih- out flux@ It is advisable to weld.1.0-mai-rthLek sheets without any' -'Card 1/2 1ACCESSION HRs AP4040693 I gap,using ft TIG process. Sheets 1.5 mm thick can be welded with or without a gap, but in the latter case, the HIC process is recommended. The strength of SAP welds made with AMg-6 filler or electrode wire is ;equal to 81-100Z of the strenRth of the base metal at room tempera- ~ture and 96% at 50M Weldable SAP can,be welded successfully to ,"other aluminum alloyse. Orig, art. ham:, 8 figures and 2 tables. 1ASSOCIATzONt none SUBMITTED: 00 ATD PRESSs 3061 ENCLs -00 SUB CODEs HM NO RE-F SOV: 002 OTHERt 008 2 2 c,, :NIKIFOROV G D - BOBROV G.V. . V .9 Improving the qualification of welding engineers. Avtom. Uvar. 17 no.7:96 J1 164. (MIRA 17:8) T 9141 lq-,6A'~ T.7p(c) .1D/ML__ ACC NRI SOURCZ 0 E. -CD -.-:UR/0135/66/060/003/OOOY/0006 ''AP600051V: Tit i.AU OR' 6et r of -i&echnical sciences); Boldyrev A.M.1 likif 6r6v ._D_ A 0 E zuKur of V 'I Nnglneer) :ORGi T t th I or _ TL, ~f, e. mechad sai ~of poroaltyl,'_ mation and-the effect of some _d is; da,the~'poroslty in% A g M .-yelding :con '14.6n 6 Iloy wel4s~ 0c noye proizvodstvo,.,he SOUR CE,_._~,Svar 1i 39 1966, 2-6 -TOPIC TAGS- aluminum a 1 --magnesium containing alloy, alloy weldingo e TIC --v Idin MIG welding alloy weld,, weld porosity, porosity formation ABSTRA:C-T:' 'A seties Of e er, "nts has been conducted with TIG and MIG welding .-of:'A N a -10 e shee a :and plat s'2-10 mm thick in order m luminu MA to det~ rmine the effect of some eld variables of the welding process on v orosity. Wag fo d ..In welding sections up to 4-5 mm thick, a It p p mos t'~ of the' -hydrogen 3-or"Rntat n a f rovw the -sur"ce of the base metals In v e I d I n gh e a' v-1-e-F-15-e-Ft 10 n 13 the sur-face of th riller material becomes th- source,-!of hydrogeni Alkaline pioklingf~ollowed by mechanical cleaning- (with a scraper or wAre.brush tly before welding ensure ..satisfactory cleanliness of the base-metal surface. The filler (elec- _trode_)~ wire la:.b Ie.st.cleaned by electrolytic polishing* after which the uDc: -621-T91.T53.93.n9:669. T15 ACC NRz' i-r.6 :Can b -e, stored for ajong time, Alkaline pickling is Satisf 0 r ~Yll 'On Y-IT -the ftetory 1, I"e. is used immediately afte rpickling. Otherwise, the e- rap uje. Yr.abiorbs moist' acUum annealing after alkaline picklin I J.brings about On Y:slikht i mprovemen*. It .appears that hydrogen absorbe as*mOisture on the surface of electrop olished vire first dissolvec-in ...,X,dlten- metal: and..evolvew~ln the for- f small biMles during cooling. M 0 the, 'case 4- In alkali, mol I i!dkle ecusr~-hydrogen does not .476b1. eiCjimxie1Aiatq,1-y~-D ag the s~ecfrlc he ~V`AA ~i- iiii ;,!-~ ot r e-~ o f M "t -614ile -'thi a "'Ity i 4:?'Onoe 5 Uz- AC, gy 0 W,.W 01 A GHEYM, I.A., ImndidEtt takhnielimakikh nauk; NNIFORM. G.G.; KCRNFYLV, B.N. DD-2 differential range finder. Geod. i knrt. no.4:24-31 Je 156. (Range finding) (MLRA 9:10) NJKUOROV, G. G. Ac cur acy of the vernier of rods used with the DD3 range finder. Geod. i kart. no.12:22-23 D 161. (MIRA 15:1) (Surveying-Instruments) NIKtFOROV, 1. 1. N I K I FOROV, 1. 1. --"Procidurn of' fr,t In ing f'or Ninrn th on itunn In P'. I ~qttr!.-i I. ion q for Degreeq in 3ciencr? qnd wngpinp,~,rinv D,~renOnrl n, USSR 111,7hF.,r r1,,1 ln,!''I t. ,I I-onl. 3,q te Order of Lenin cinl Order of .'pd ~qnnpr In-, Of P V-;C3 ;--n! P. F. r; Lesgaft, Lenin;~rqd l0rl~ I' Kniz~~nqvq Letoris'. No For Je-r-e of n SOKOLOVSKIY, M.B.; NIKIFOROV, G.I. Urgent problems in connection with the improvement of the quality of raw leather. Kozh.-obav.pram. 3 no.1:3-6 Ja 161. (KIRA 14:5) (Leather) SOKOLOVSKIY, M.B.; NIKIFOROV, G.I. Improve the primary processing of raw leather. kozh.-obuv.pr=. 3 no.9:11-14 5 161. (MIRA 14:11 (Leather industry) It Pf//-- ~- x?, t (-. ~ /~/ RYNKOVOTI, Y.K., podpolkovnik ned.slushby, VIKIMOW. G.H.. StArahly leytenant sed.oluzhby Photographic device for mnrking linea on the tape of an electro- cardiograph. Voen.med.zhur. n0.12:75-76 D157 (KIRA 11:5) (ELECTROCARDIOGRAM) AGRANORIK, Te.Z., kand.tekhn.nank; BELOT, A.N., dotsent; GLADKOT. A.M., insh.; GLUSKIN, S.A.. lnzh.; ITANOT, I&J., dotsent, kand.tekhn. nauk; LIPKIN, Te.T., ksnd.tekhn.nsuk;.NIXIPOROT, G.N., dotsent. kand.tekhn.nauk; PBSENSON, I.B., insh-, PRIG ek.. dotsent, kand.tekhn.nauk; PTATCY, U.N., insh.; ROUCHIN, le.Z., lnzh.-, MOROT, R.F.. prof.. doktor tekhn.nauk; WffARTS, X.B.$ inzh.; hHIGORIN, G.G., doteent. kand.takhn.nam ; SHIPRIN, S.K,, prof., doktor tekhn.nauk; POPRUGIN, I.T.. inzh.. reteenzent; KATS. L.P., inah., retsenzent; RODWERG, A.S.. red.izd-va; VORONETSKATA. L.T., tokha.red. EKanual of water-supply engineering and sewerage] Spravochnik po vodomnabahsaiiu i kanalizataii. rod red. B.F.Pedorova. Lenin- grad, Gos.izd-vo lit-ry po stroit.. arkhit. i stroit.materialam, 1959. 410 p. (MIRA 130) 1. Moscow. tiosudarstvannyy proyektnyy inotitut todokanalproyekt. Laningradskoye otdolemiye. kWater-supply engineering) 0everage) AGRANGNIK, Ye.Z., imnd.teklm.nauk; BELOV, A.N., dotsent; GLAEKOV, A.M., insh.; GLUSKIN. S.A., inzh.; IVAHOV. L.V.. dotsent, kand.tekhn. nauk; LIMIN, Ya.T., kand.talchn.nauk; NIKIFOROV' G N dotsent, kand.tekhn.nauk; PZSZNSON, I.B., inzh.; PREGBR, Ye:A:'. dotsent. kand.takhn.nauk,- PTATOV. U.N., inzh.; RCKHCHIN, Ye.Z., insh.; FADCROV, N.F.. prof., doktor takhn.nauk; SEVARTS, R.B.. inzh.; SHIOORIV, G.G.. dotsent. Imnd.takM.aauk; SHIFRIN, S.K.. prof.. doktor tekhn.nauk; ROTEUB3RG. A.S., red.izd-va; VCRONIVSKAYA, L.V., tekhn.red. [Water-supply and sewerage man-n 11 Spravochnik po vodoenabzheniiu i kanalizataii. Pod red. N.F.Pedorova. Izd.2., ispr. i dop. Lenin d, Gos.izd-vo lit-ry po Btroit.. arkhit. i stroit.materialam, 1960. 420 p. (MIRA 13:12) la 14o c W. VodokDnalpro,7ekt. Leningr dakoye o deleniye. twater-supply engineering) Neweragel KASTALISKIY., Aleksandr Aleksandrovich.. doktor tekbn. nauk, prof.; MINTS,, Danlil FAksimovich, doktor tekhn.nauk, prof.-prinimli uchastiye: KUWAYWV, V.A., kend. teklin. nauk; ROVAKOVSKIY, N.S.1 ABRMOV., CC,, doktor tAkhne nauk,, prof., rettienzentj NIKIRROV G N.# kwid. tekhn. nauk, dots., retsenzent; PREGER, -Y "..1, retsenzent; BULYGIN, A.K.,, retsenzent; LIPKIN,ye.V., retsenzent, VOZNRA, N.F.p kand. khim. nauk, reteenzent; BMM, A.N., dots., reteenzent; AGRAXONIK, Ye.Z., kand. tekhn. nauk, reteenzent; HOVIKOV, P.V., inzh., retsenzent; SHVARTS, R.B.0 inzh., rateenzent; KONYUSHKOV, A.M.# kand. tekbn.nauk, naucbzqy red.; NIKOLAYEVA, T.D., red. izd-va,- GOROKHOVA, S.S., tekbn. red. (Water treatmenta for drinking and for industrial usea]Podgo- tovka vody dlia pitlevago J pro=jshlennogo vodosnabzheniia. Moskva#.Gas.izd-vo "Vysshaia shkola'.11 1962. 557 P. (MIRA 16:1) 1. Kafedra vodosnabzheniya Leningradskogo inzhenerna- stroitelinogo instituta (for Nikiforov, Preger, Bu3,vgin, Lipkin, Voznaya, Belov, Agranonik). (Water-Purification) NIKMRGV,, G.,, inzh,, 1-himi Softening of water for industrial, drinking,, and other purposes* BJLo2 I kbim 4 no.4:18-22 162. NIKIFCROV, G., inzh.-khimik BeIrtonite. Priroda &Alg 11 no.5-53-58 S-0 162. N11aFOROVO G. N. P Z 9. A. MINER, and Vyahitkov, M. A. "The Influence of Ionized Air on the Working Capacity and Vitamin Metabolism." report to be presented by Prof. A. A, ~Unkh at the First Intl. Conf. on Ionization of the Air, Philn, Pa. 16-17 Oct. 1961 1, 1 NIZIFOROV, G.V.. lnzh.; KAMMKIT, Tu.A.. inzh. Remote control of marine steam engines. Izobr.v SSSR 2 no.10:21-22 0 157. (MIRA 10:11) (Marine engines) (Remote control) STORCHAK, I.M.. nauchnn rabotnik; SKOROKHOD, I.I.. nauchny-y rabotnik, NIKIAMOV, G.V., mekhanik Attachment for sharpening cutter bar ~mives of tho SK-2.6 combine. Makh.sill.hosp. 10 no-7:10-12 Jl '59. (141RA 12:12) 1. Ukrainakiy nsuchno-Issladovatellskiy institut melchanizatl3ii i alektrifikatell sel'alcogo khoz7a7stva. (Combines(Agricultural machinery)) NIKIFOROT Q.T.. takhnik-makhanik. - BELLY A 7.(Bielyi. A.Vj. takhnik-makhanik. -. A.P.[Shabellnriv BOP03 * How to Wrove the operation of the SZ-2.6 combine. Kekbe sill. hospe 9 no. 8:10-11 Ag 158. (MIRA 11:8) lo Kharikivalke oblesne upravltanya sillalkago oapodarstva(for Stwballntk). (Comb inse(Agricultural maohineryl) NIRUGROV. G.V. [Nikiforov, H-V-I, mekhanik Table-mounted hydraulic press with 5,000 ton capacity. Mekh. siV.hosp. 9 no.12:18 D 158. (MIRA 12:1) 1. laboratoriya remonta Ukrainskogo nanchno-isaledovateltakogo inatituta nekhanizatsit i elektrifikataii sel'skogo khoz M stva. (Hydraulic presses) LISOVSKIY, G.A. [Lisovellgri H.A.], tokhnik-mokhanik; NIKIFUROV, G.V. [Nikiforov, H.V.J. t,kh,Ik-,.kh-,ik Coupling for connecting damaged hose. Mekh.sil'.hosp. 10 no.12:26 D '59. (MIlui 13:3) (Hose couplings) NIKIFGROV, G.; LISOVSKIT, G. Sharpening knoves of the cutter cylinder of SI-2.6 combines. Tekh. v sellkhos. 20 no-7:45-47 Jl 160. WHA 13:9) (Combines (Agricultural machiner7)-Maintenance and repair) NIIEIFMT. I. Advanced methods for loading lumber. Sell.stroi. 15 no.7:17-18 Jl 160. OCIBA 13: 8) 1. alayrqy mekhanik upravlonlya lesoxagotovok Glaynogo upraTlerAya stroitel'stva Hinisterstva sel'skogo khosyaystva RSISIL (Loading and unloading) (lumbe r-Transportat ion) Mechanization of industrial processes in a lumbering establishment. Sell. stroi. no.6:26-27 Je 162. (M-MA 15 -7) 1. Glavr47 mekhanik Upravleniya looozagotovok i i3troitellnykh matarialav Ministerstva proizvodstva i zagotavok sellskokhozyaystven- a7kh prodAtov RSFSR. (Sverdlovsk Province-Lumbering-Machinery) 0IK-IMOM,-T.,,- HAKAROV, A.; SMDLYAKOV, N.; SIFER, E.; MOGILA, V.; LARIN, M.; FILIPPOVO K.; TOKHAKOV, V.; BARANOVSKIY, V.F CHBTV=OV, K.; POWANSKIII A.; SHUTOV, M.; ROZENFELID, L.; RUDI, A. Mechanization of waterproofing operations. Stroitell 8 no.11: 15-20 N 162. (MIRA 16:1) (Waterproofing-Equipment and supplies) NIKIFOROV,Ivin- Two problems. Grazhd.av. 18 no.4110-1-1 161. (MIRA 14:4) 1. Rukovoditel' poletov Irkutskogo aeroporta. (Meteorology in aeronautics) (Airports-Traffic control) AUTHOR: Nikiforov, 1,.A. (Enelneer') SOV/129-59-5-15/17 TITLE: -Fh`or-te-n-i-ng--tSe---Heat Treatment Regime of Component, Made of the A11o7 AL9 (Sokrashchenlye reznima termiz-.hetkc.,y obrabotki detaley Iz splava AL9) PERIODICAL: Me tall o vedeniye i te-rmicheskaya Obrabotka Metallov, 1959, Nr 5, pp 58-59 (USSR) ABSTRACT: Strain hardening of the alloy AL9 (6-8% Si and O,C-..O,'+% Mg) during heat treatment Is due to the chemJ--al compound M92Si. At 5950C tt.9 soLubility of th.? Mg-~'Sl compound is 1.85% wh.1-1st at 200C Jts solubility in the aluminium solution is practically nil, Cast AL9 alloy components are usually quenched from 5350C in water, and artificially aged at 1700C for 5 hours. In order tc establish the possibility of reducing the heating time during ageing, special Investigations were carziel cute Specimens were rut from components of AL9 alloy materi-I cast into the ground. The specimens were quenched f-rom 5350C in water at 60-800C. The ageing temperatures were 175, 185, 200 and 2150C and the ageing durat ons were 30: 609 90, 12-0 and 180 m1n respectively. The obtained Card 1/3 results were utilised for plotting the changes In thL- SOV/129-59-5-15/17 Shortening of the Heat Treatment Regime of Components Made of tne Alloy AL9 mechanical characteristics as a function of tLe agelng time and ageing temperature (Fig 1 shows the dependence of the mechanical properties on the ageing temperature and ageing duration). Analysis of the experimental data revealed that ageing at 2000C for 120 min y1elds the best mechanical properties. Dilatometric investigations of the alloy were effected by means of a differential dilatometer. The comparison standard was made of annealed, commercially pare aluminium. The results of the dilatometric tests on specimens heated to 170, 180 and 190 OC during the Isothermal ageing (Fig 2) indicate that with increasing temperature the speed of internal transformations increases sharply. The dilation graph obtained during heating to 2200C with subsequent isothermal holding at that temperature indicates that important Internal changes take place 1n the alloy during the first hour. It was established that ageing at temperatures above 2200C Is Inadmissible since it does not permit obtaining the necessary strength, Corrosion Card 2/3 tests of the alloy carried out in a 3% solution of NaCl for a period of 53 hours have shown that specimens which SOV/129-59-5-15/17 Shortening the Heat Treatment Regime of Component's Made of 'Il- Alloy AL9 have been treated according to various regimes do not show great differences In theiy resistance, Shop tests of batches of components made of the alloy AL9, after ageing at 1900C for 1.20 min revealed that the entire batch of 2000 components was satisfactory from the point of view o1 hardness. A reduction of the ageing time from 300 to 120 min will result in a considerable increase in Card 3/3 productivity. There are 2 figures. ASSOCIATION- Stalingradskiy traktornyy zavod (Stalingrad Tra,.tjr Works) ana. una I- II , , ALEKSEYEV, G.P.; ANDONIYEV, V.S.; ARNGOLID, A.V.; BASKIN, s.m.; BASHMAKOV, N.A.; BEREZIN, V.D.; BEWW, V.A.; P-IYANOV, T.F.; GORBACHEV, V.N.; GRECHKO, I.A.; GRINBUKH, G.S.; GROYCV, M.F.; GUSEV, A.I.; DEMENTIYEV, N.S.; DMITRIYEV, V.P.; DULIKIN, V.Ya.; ZVANSKlY, M.l.; ZENKEVICH, D.K.; IVANOV, B.V.; MAKIN, A.Ya.; ISAYENKO, P.I.; KIPRIYANOV, I.A.; KITASHOV, I.S.; KOZREVNIKOV, N.N.; KORMYAGIN, B.V.; KROKHIN, S.A.; KUDOYAHDV, L.I.; KUDRYAVTSEV, G.N.; LARIN, B.G.; IEEFMV , V.P.; LEVCHENKOV, P.N.; LENZIKOV, A.K.; LIPGART, B.K.; LOPAREV, A.T.; MALYGIN, G.F.; 14ILOVIDOVA, S.A.; MIRONOV, P.I.; MIKHAYLOV, B.V., kand. tekhn. nauk; MUSTAFIN, Kh.Sh., kand. tekhu. nauk; NAZIMOV, A.D.; NEFEDOV, D.Ye.; XI&IFOTV, I.,V.; NIKULIN, I.A.; OKOROCHKOV, V.P.; PAVLENKO, I.M.; PODROBINNIK, G.M.; FOLYAKOV, G.Ya.; PUTILIN, V.S.; RUDNIK, A.G.; RUMYANTSSV, Yu.S.; SAZONOV, N.N.; SAZONOV, N.F.; SAULIDI, I.P.; SDOBHIKOV, D.V.; SEMENOV, N.A.; SKRIPCHINSKII, I.I.; SOKOL,OV, N.F.; STEPANOV, P.P.; TARAUNOVI, V.S.; TREGUBOV, A.I.; TRIGER, N.L.; TROITSKIY, A.D.; FOKIN, F.F.; TSARZV, B.F.; TSrSULIN, N.A.; CHUBOV, V.Ye., kand. tekhn. nauk; ENGEL', F.F.; YUROVSKIY, Ya.G.; YAKUBOVSKIY, B.Ya., prof.; YASTREBDV, M.P.; KAMZIN, LV., prof., glav. red.; MALYSHEV, N.A., zam. glav. red.; MELINIKOV, A.M., zam. glav. red.; RAZIN, N.V., zam. glav. red. i red. toma; VARPAKHOVICH, A.F., red.; PETROV, G.D., red.; SARKISOV, M.A., prof., red.; SARUKHANOVP G.L., red.; SEVASTIYANOV, V.I., red.; SMIRNOV, K.I., red.; GOTMAN, T.P., red.; BULIDYAYEV, N.A., tekhn. red. (Continued on next card) ALEKSEYEV, G.P. - (continued). Card 2. (Volga Hydroelectric Power Station; a technical report on the design and construction of the Volga Hydroelectric Power Sta- tion (Lenin), 1950-19581 Volzhskaia gidroolaktrostantsiia; tekhnicheskil otchet o proektirovanii i stroitelletve Volzhakol GES imeni V.I.Lenina, 1950-1958 gg. V dvukh tomakh. Moskvaj Gosenergoizdat. Vol.2.(Organization and execution of constrution and assembly work] Organizatsiia i proizvodstvo stroitellno- montazhnykh rabot. Red. toma: N.V.Razin, A.V.Arngolld, N.L. Triger. 1962. 591 p. (MIRA 16:2) 1. Deystvitellnyy chlen Akademii stroitellstva I arkhitektury SSSR (for Razin). (Volga Hydroelectric Power Station (Lenin)--Design and construction) FJIOWDOK, Ye.D.; NIKIFOITQV, I,V.; KAYSURADZE, L.I.; ALEKSAINDROV, N.I.; BALAS11OV, biew methodt for gravity surveying wider the conditions of a dense forest. Sbor.luch.rats.predl. pt. 2:4-5 163. (MIRA 17:5) 1. Ukhtinskoye geologicheskoye upraileniye. AUTHOR: Nikiforov, 1.1a. 48-104W20 TITLE: On the Problem of Determining the Density of Electron States According to Energies From X-Ray Spectra (K voprosu o nakhozhdenii po rentgenovskim. spektram ras redeleniya plot- nosti elektronnykh sostoyaniy po energiy:7 MIODIGAL: Izvestiya Akad.Nauk SSSR, ger.Fiz. 1957, Vol. 21 , Nr 10, PP-1362-1366 (USSR) ABSTRACT: The task of determining the density of electron states in the case of an emission spectrum consists in the solution of an integral equation. The existing methods developed by Vaynshteyn, van Cittert, and others are very faulty. Here a new method, which is free from these faults, is described. The curve diagram is decomposed into a number of horizontal rectangles, and each rectangle is a difference of two steps of which one has a ledge on the right and the other on the left branch of the curve. The method offers the advantage that no computation is necessar-j for the determination of the step parameters as is the case with other methods. The disadvantages of this method are: Card 1/2 48-ic-512D On the Problem of Determining the Density of Electron States According to Energies From X-Ray Spectra It is limited by the case of the distortion of dispersion, and, with an increase of the ratio between the extension and the half-width of the line to be corrected, the accuracy of the method decreases. There are I table, 5 illustrations, and 6 references, 4 of which are Slavic. ASSOCIATION- aWWV Agri__UjtVUjLJ M%Chl Bmilding Imt4tute (Rostovskiy institut sei'skokhozyaystvennogo mazhinostroyeniya) AVAILABLE: Library of Congress Gard 2,12 NIKIMROV . I. Ya. Shape of conductivity bands in iron. Fiz. met.1metalloved. 11 no,6:927-934 Je 161. (MIRA 14:6) 1. Rostovskiy-na-ronu universitet. (Iron-Electric properties) (Free electron theory of metals) NIKIFOROV, Lya. Fom of the K emission band of iron. Izv. AN SSSR. Ser. fiz. 25 no.8:f843-1047 Ag 161. (MIRA 24:8) 1. Rostovskiy-na-Donu gosudarst7ennyy universitet. (Iron--Spectra) (X-ray spectroscopy) NIKIFOROV., Lla.; SACHIDIXOS, V.P.; BIDUIN, M.A. Comparison of different methods for improving the form of spectra. Izv. AN SM. Ser. fiz. 25 no.S.-1054,-1059 Ag 161, (MIRA 14:8) 1. Rostovski)-na-Donu gosudarstvennyy univeraitet. (X-ray spectroscopy) SACHEM, V.P.; NIKIFOROV, I.Ya- Correction of X-ray spectra for oymnetric distortion. opt. i opektr. 13 no.33447-490 S 162. (MIRA 15:9) (1--ray spectroscopy) S/0~8/62/026/003/310/015 3142/3104 AUTHORS: Blokhin, MI. A., Gillvarg, A. B., Nikiforov, I. Ya., and Sachenko, V. P. TITLE: Two-crystal X-ray spectrometer PERIODICAL: Akademiya nauk SSSR. Izvestiya. Seriya fizicheskaya, v. 26, no. 3, 1962, 397 - 404 TEXT: The adjustment of the new spectrometer is comparatively slm~.Ie Una takes only a few hours. The crystals can be taken out of the ap:Daratus without disturbing the adjustment. The distance betTeen the rotatinE axes of the crystals is 100 mm. The focus of the X-ray tube is 300 mm dista4t from the rotating axis of the first cryst~_l. The distance of the rotating axis CC the second crystal from the window of the Geiger counter is 100 am. The second crystal can be rotated by :t 1.50 from the middle position reading accuracy 0.010). The spectrometer is not adjusted by means of the crystals but by glass plates. After adjustment, the crystals are inserted to deter- mine the CuKo( 1 - line and the angle between crystal surface and lattice planes. Eight horizontal plates were built into the collimator to reduce Card 1/3 3/048/62/026/,D~~')/Gl 3/015 Two-crystal X-ray spectrometer B142/B104 the vertical scattering of the beam to a minimum and yet to obtain hi--n radiation intensities. A beryllium plate inserted between tfte coll1mator and the first crystal is to eliminate the focus drift and the effect of feeding-voltage fluctuations. It was difficult to choose the suitable crystals since extreme optical uniformity is required, and the angle between crystal surface and lattice planes shall be as small as possible . TtS maximum was 105". Plates parallel to (10fO-) and (11fO) were cut from various quartz crystals and investigated after etching. The -)urity of t~,e two crystals is determined by the width of the reflection curves. The quality of the plates is estimated from the shadows produced by deviations of the refractive indices. A final examination carried out by -.Cans of a polarization system indicates optical inequality of the elates by spots. There are 6 figures and 6 referencest 1 Soviet and 5 non-Soviet. The two English-language references are: L. G. Parrat, Rev. 3c-ent. inst-nim J, no. 11, 113 (1934)1 Rev. Soient. Instrum., 6, no. 5, 113 (1935). Card 2/3 bard 3/3 -ace th rfa sh be'." et . _~p at. ftgu,r j,:_ sk 343 "+0:t ff 9 Rol 33 5m , . ~!X 4 ACCESSION NR: AP4038761 8/0048/64/028/005/0780/0786 AU771OR: Blokhin, M.A.; Kikiforov, I.Ya. TITLEt Shape of the =1,2 lines Of the iron group elements Aeport, seventh confe- rence on X-Ray Spectroscopy hold in Yerevan 23 k190-1 Oct 19637 SOURCE: AN SSSR. Izvestiya. Seriya fLzichaskaya, v.28, no.3, 1064, 780-785 TOPIC TAGS: x-ray spectrum, chromium, mangpav*e. iron, cobalt, copper. nickel, zinc 0 ABSTRACT: The W doublets of the elements of atomic number from 24 (Cr) through 30 (Zn) were recorded with the high resolution two-crystal spectrometer of the Rostov State University. The instrument and the experimental procedure are discussed else- where (M.A.Blokhin. A.B.Gillvarg, loYa.Kikiforov, V.P.Sachenko, Izv.AN SSSR,Ser.fire 26,397,1962). The resolving power was approximately 38 000, the dispersion was 0.01 X per second of arc, and the angle could be measured to �0.5". The Cr and. Ki spec- tra were obtained with Cu anodes on which Cr or Ki had been electroplated. The oth- er spectra were obtained with Cu anodes into which powders of the corresponding me- tals had been pressed. The double reflection curves with parallel crystals were quite narrow (0.15 to 0.21 eV). The widths of the =1 lines were corrected for In- Card 1/3 ACCESSION NR: AP4038761 strumental broadening by simply subtracting the width of the corresponding parallel crystal double reflection curve. One spectrum (Cu) was corrected by a more rigorous method (V.P.Sachenko and I.Ya.Nikiforov,Optika I spektro.13,447,1962) with practical- ly identical results; the corrections are therefore believed to be adequate. Of the published measurements of the =1 widths of the iron group metals. the present mea- surements, those of G.Brogren (Arkiv.fyz.23,219,1963), and those of A.Meisel and W. Nefedow (Z.phys.Chem.(DDR),219,397,1962) were obtained under the r-st advantageous conditions with regard to instrumental broadening. Although there is considerable agreement among the three groups of data, there is also some disagreement among the& The =1 asymmetry indices were calculated, and they are compared with data of other workers and with the magnetic moments. Although the correlation between 101 asymme- try and magnetic moment is strong, it is not perfect. Notable deviants are Cr and Cu, both of which are much too asymmetric for their small (or vanishing) magnetic moments. The copper spectrum was corrected for the width of the K level, an4 It is concluded from the shape of the corrected curve that the asymmetry of the CU spec- trum Is due to Complex structure of the L111 level. The =1 line of metallic chrom- ium was found to be compl". This fine structure in much more prominent In the spec- trum of the oxide, where It appears &Ina In the W3~2 line and has previously been re- ported by others. In oxdor to ask@ the M doublet shapes conveniently available for CWd 2/3 AMENION NR: AP4038761 use In prealslon x-ray structure analysis, the data are presented not only graphi- cally, but also In tabular form. The accuracy claimed for the tabulated intensities and energy displacements to 1% of the peak value. and 0.05 eV respectively. Orig. art.has: 4 figures and 4 tables. ASSOCIATION: Rostavskiy-na-Donu gosudarstvanny*y universitat (Rostov-an-the-Don State University) SUMMED: 00 DATE ACQ: 12Jun64 ENCL: 00 SUB CODE: OP MR REP SOV: OQ6 OMER:008 Card 3/3 ACCESSION KR: AP4038762 S/0048/64/028/005/07"/0789 AUMOR: Nikiforov, I.y&.; Blokbin, M.A. TITLEi Concerning the shape of the x-ray emission bands of transition metals of the Iran group ffieport, Seventh Conference on X-Ray Spectroscopy hold In Yerevan 23 Sep-l Oct 1"27 SOLqICE: AN SSSR. Izvestiya. Serlya fizichaskaya, v.28, no.5, 1964, 786-789 TOPIC TAGS: x-ray spectrum, band spectrum, line spectrum, iron, nickel, copper. X-ray structure analysis ABSTRACT: The 105 bands of Fe, Ki and Cu, and the 101 lines of Fe and Cu were re-' corded with the two-crystal spectrometer (resolution 38 000) of Rostov State Univer- sity (N.A.Blokhin, A,;B.Gillvarg, I.Ya.Nikiforov and V.P.Sachenko,Izv.AN SSSR,Ser. :fiz.26,397,1962). Quartz crystals cut parallel to the (1120) planes were employed.i The Fe and Cu spectra were obtained with anodes of the respective metals. The Nt spectrum was obtained with a Cu anode on which UL had been electroplated. The x-ray tube was operated at 35 W and 20 m4. An accuracy of 2% is claimed for the ordinates of the published spectral intensity curves. The shapos of the Cu and Fe 101 lines Card 1/3 ACCESSICK NR: AP4038762 were recorded because of their technical importance for precision x-ray structure analysis. They are presented graphically but are not discussed. It is not possible to obtain reliable widths Of the K35 bands without correcting for the width of the K level and removing the to"' satellite. This analysis was not performed. The widtbo at half maximum increased with increasing atomic number, corresponding to the in- creasing density of free electrons between the Is and 3p shells. the principal peak of the Cu band was found to be double. The two peaks are ascribed to the 105 and 102 lines, although the assignment is regarded as arbitrary because of the strong hybridization of the conduction band. The Cu 10111 satellite was clearly re- solved into two satellites, which are designated by 10 off and to 1 1;. Weak structure (2 was found on the long wavelength side of the Ni and Fe bands. This could be due to a long wavelength satellite, or to zonal structure of the electron states in the lattice. The fe 105 peak was broad and nearly flat. Previous calculations of the Fe 10s band shape (I.Ya.Kikiforov,and M.A.Blokbin, Izv.AN SSSR,Ser.fiz.27,314.1963) are compared with the present measurements, and considerably better agreement is found than was previously obtained with the measurements of J.A.Bearden and C.H. Shaw (Phys.aov.48,18,1936). The calculations do not reproduce the structure on the long wavelength side. The paper cloaca with a short essay on the role of x-ray spectroscopy in the development of solid state physics. Although it is not possible cwd a^ ACCESSION XR: AP4034762 to obtain electron densities by simply dividing x-ray band intensities by transitiM probabilities as envioaged 30 years ago by H.Jones, N.F.Uott and H.W.B.Skinner (F4y& Rev.45,379,1934). one can nevertheless employ different approximate m3thods for dealing with the many body problem to calculate x-ray band shapes, and by comparing the calculated shapes with experimental data one can select the most promising mathematical methods for further development in connection with solids of particu- lar types. Orig.art.has: 3 formulam and 3 figures. ASSOCIATION: Rostovokiy-na-Danu gasudaretvanny6y universitet (Rostov-on-the-Don Ptate University) SUBUX S 00 DATE ACQ: 12Jun64 ENCL: 00 SUB CODE: OP NR REP SOV: 009 OINER.- 004 CWd 3/3 ACCESSION NR: AP4038764 S/0048/64/028/005/0797/0800 AUTHOR: Shveytsor, I.G.; Nikiforov, I.Ya.; Sachenko, V.P. TITLE. Concerning the energy spectrum of metallic niobium geport, Seventh Confe- rence on X-Ray Spectroscopy held in Yerevan 23 Sep - I Oct 19627 SOURCE: AN SSSR. Izvestlya. Seriya fizichaskaya. v.28, no.5, 1964, 797-800 TOPIC TAGS: x-ray spectrum. x-ray absorption. molybdenum, niobLum, energy band structure ABSTRACT: In continuation of previous theoretical and experimental inveStigAtiong of transition metals of the palladium group (I.G.Shveytser, V.P.Sachenko and I.Ya. Kikiforov, Izv.AN SSSR,Ser.fiz.27,319,1963) the 1432 emission and LI11 absorption spectra of Me and Kb are compared, and their differences are interpreted in terms of the energy level distributions in the metals as calculated in the orthogonal plane wave approximation. The Me spectra and energy level distribution are taken from the earlier paper. The Nb emission spectrum was taken from work of M.I.Korsun- .sk:Ly and Ya.Ye.Gankin (Izv.AN SSSR,Ser.tiz.25,1028,1961) and the Nb L111 absorption ippectrum was wasured for the occasion. The spectra of the two netals are rather card 1A ACCESSION XRt AP4038764 aimilar, but the following differences are noted: the 1432 emission band of Mo is both wider and more symmotric than that of Nb, and the first LIXI absorption line of Kb is wider than that of No and its maximum is located farther fron the absorp- tion edge. Since no self-consistent wave functions are available for Nb, and since orthogonalized $later functions proved to be insufficiently accurate, the atomic parameters of Xb required for the orthogonal plans wave calculation, namely the Fourier components of the atomic potential, the orthogonality coefficients, and the energy eigenvalues, were obtained by extrapolation from those of Mo. The extrapola- tion of the energy eigenvalues was performed with the aid of Moseley's law, that of the orthogonality coefficients by means of Hartres's scale transformation of the wave functions, and the Fourier components of the potential were extrapolated by first calculating their dependence on the atomic number with the Fermi-Thomas model. Thirteen orthogonal plane wave functions were employed in the calculation of the energy levels; the method of calculation is described in more detail in the earlier paper. Considerable differences were found between the level distributions In go and Nb. In particular, the maximum density of d levels occurs near or below the Fer- mi surface in Mo and considerably above it in Kb. The LI11 spectra of the two metals are discussed in some detail in relation to the level distributions, and all %!~_A differences noted above are successfully Interpreted - in one case (the width of the Card 2/3 ACCESSION XR: AP4038764 Nb LP2 band) almost quantitatively. It is concluded that oven incomplete calcula- tions of the energy structure of a solid can sometimes make it possible to inter- pret x-ray spectra senIquantitatively. Orig.art.has: 3 formulas and 3 figures. ASSOCIATION: Rostovskiy-na-donu, gosudarstvenny*y univeraLtat (Rastow-on-the-Don State University) SUBMI : 00 0 DATE AOQ-. 12Jun64 ENCL: 00 SIM CODE: OP NR REF SOV: 002 OUMR:006 Cod 3/3 A/' XPO t,/, ~< --3-? IVANOV. Leonid Ivanovich; NIKIYOROY, Konatentin Dattriyevichl garay a ~VICH' N.M., tekhn.red. (Production economics and organization on state dairy farms- based on a study of the Severo-Liabin State farm in Omak ?rovincej Jkono- mike i orgeuisataiia proizvodstva v molochnom sovkhoze; as primers Severo-Liubinskogo sovkhoza Omakoi oblasti. Moskva, Goa. izd-vo sellkhoz. lit-ry. 1957. 213 p. (KIRA 11:2) (Dairying) IdKiFr'llov, K. V. USSR/Geolog~ical ProspectinE Academy of Sciences lj;,n/ieb 50 "Progress and Protlems of juaterriai"y Gec.Log./ Lin the USS.it DuriinC t~e 3~,alix, Five-Year Flans," V. 1. Gromov, K. V. NikLforov, t- pp "Iz Ak Nauk SSSR, 3er Geol" No I The Commission on Study of the 4uaternary Period was orEanizeLl in ij27 to initiate and coordinate studies in this field. Later, divisicns were or:-anized in the former Geol Conv.-.ittee in Leningrad and in the Inst of Gecl Sci, Acad Sci Ukrainian SSR and some work in this field was done at Acad Sci Eelorus..ian -;3R. Conuriission organized 4E expeditions in European USSR and Caucasus to draw up International 4uatcrnary Map in "Ile 3 years betwcan sec,_rid and tli;ird international quaternary Conferences. NIKIFOROV, L. (Moskva) The invisible universe. Priroda 50 no.8:82-83 Ag 1~1. 0I-,U;-A 14:7) (Neutrinos) NIKIFOROV, L.; RAKMKIY, B.; FEDOROV, A. Conference on the problem of building a comaunist econoziy. Vop. ekon. no.W40-146 A 63. (KMA 16:4) ~Zc'onomics--~Uongrasses) EKLOUSOV, F.; NIKIFOROV, L. M1-49 television recalver Wth 'weive channOlso itadio no.6.34 je 163. (~GRA 16:7) (Television-Recievers and reception) 4JK1F0R0V,_L.A.; NIKOLAYENKO, MI.; VOLKOV, N.V.; SHMSOV0 N.I.; -`ftlAKSIN, S.V.; POPOV, N.N.; PEKSMV, Yu.A.; KARSHINOV, L.N.; YAKI140VAP T.A.; SHALASHOV, V.P.; VASYMMI, Yu.L.; P~XV, L.V.; PUMTKOV, N.N.;VASIL'YEVA, G.N.; TSAGURIYA, G.M., tekhn. red. (Economic development of the people's democracies of Europe and Asia; statistical collection) Razvitie ekonomiki stran narodnoi demokratii Evropy i Azii; statistichaskii sbornik. MOBkva, Vneshtorgizdat, 1961. 470 p. (MIRA 150) (Communist countries--Statistics) NIKIFOROV, L.G. -- ---------- Nschanical and mineralogical compoktAolk of costal aUUT.,.uxs as an Indicator of the dynamics of t6 shore (as exemplified In the southeastern Caspian Sea). Okeanologiia 3 no.2sZ?8-284 163. (MIRA 164) 1. Moskovskiy gosudarstvennyy universlt~t ~Teni Lamonosova. (Caspian Sea-Alluvii&) NIKMP,GV,,,4,Q..; FRAVOTOROV, I.A. Using the hydrometeorological method for studying the dynamics of the coasts of reservoirs and seas. Okeanologiia 3 no.41 739-748 163. (MIRA 16:11) 1. Geograficheskiy fakulltet Moskovskogo gosudarstvennogo universiteta. MYAKOKIN, V.S.I_NIKIFOROII,- L.G.; SAMSONOV, S.K. Ape and stages of a Post-Khalynian transgression. Okeanologiia 4 no.ls86-97 164. (MA 11:4) NIKTFORC-'V, L.G. Conditions of f, ,' 5rrs, haE,-, --. *~- - -' Ogurchinskiy 191aml. (-Pk-qm ~ 1 ".1. %A I f .. I .. .I - - I :) ~, I - - V 'r. 'ro t~ /a, g~r ... 1. Moskovskay g-:)sullrr-9tv-inr);ry V.. ~j.' - graf i cheskiy Cakul I te ~. LEONTOYEV9 O.K.9 prof.; NIKTFDROV_1,1.g,,,,, kand.geograt.nauk . _--;j Modeling of natural processes& Priroda 54 no.10:49-52 065. (MIRA 18810) 1. Moskovskiy gosudarstvenny7 universitet im. M.V.Lomonosova. NIKIYOROV,. L.Q. History of the developmeat of the Mrasnovocisk $pit. IZV. Tye. acheb. sav.; geol. L razv, 3 no.5.-67-76 my l6o. (MIRA 1302) 1. Moskovskly Cosudaretvannyy universitet Iment X.T.Iononosova. (Xr#Auovodek region-Geology, Structural) IMFOROT L. G. _ On the existence of Uzboy runoff through the Adzhaib. Test. Monk. im. F;t-r.5: Geor. 15 no.1:69-71 My - Je 160. OURA 13:7) (Uzboy-Punoff)