SCIENTIFIC ABSTRACT PETROV, A.V. - PETROV, A.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001240420002-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: July 19, 2001
• Sequence Number: 2
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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PETROV, A.7., kand. tekhn. nauk; LEMARMIYE, ;rizr..
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Proizv- no. ':43 J'J 1' 1), 1 v - - .,, -. ...

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-ASSOCIATIONs none,
suBmxTTED: oo DATE ACq: 02Aug63 ENCL% 00
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PETROV, A. V., inzh.
Overall mechanizaLlon of ln*,ershop convoying. Mekh.i avtom,
proizv, 18 no. 5-32-34 My 164. (MIRA 17:5'

TARNOPOLISY,IY, YU-M-L FETR07, A.Y.; AKUNTS, K.A.; Prinimali uchasti Tei
KA."ILINYA, R.P., mladshiy naucnny/ sotr-udrik; !ON3F-7V, A.V. I n 7h .
Effect of compression parame ters an the strengtn of the plastic
AG-4. PlRst.massy nc.4:65-67 162. 'MIRA 15:4)
(Plastics--Molding)

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GULTTATEV. P.V.; PETROV, A.V.
Heat capacit7 of some semiconductors. Fiz. t7er. tela 1 no.3:36~1-~72
Mr '59. (KIRA 1.2:5)
1.1netitut pol~iprovodnikov AN SSSR, Leningrad.
(Semiconductors--Thermal properties)

DEWATKOVA. Te.D., PETROV, A.V.; SMIRNOV, I.A.: KOTZHIS, B.Ta.
Melted quartz as a model material for measuring thersocondncti-
vity. Fiz. tvar. tela 2 no.4373&746 Ap 160. (MIRA 13:10)
1. Institut poluprovo"ikow AN SSSR, Leningrad.
(Quartz) (Heat--Conduction)

.1 q 0 0 014 S/181/61/003,/005/0C6/042
B1 01,'B214
AUTHORS: Devyatkova, Ye. D., Petrov, A. 7., and 3mirnov, 1. A.
TITLE: Heat transfer on bipolar diffusion of heat carriers in lead
telluride and lead selenide
PERIODICAL: Fizika tverdogo tela, v. 3, no. 5, 1961, 1358-1341
TEXT: Ye. D. Devyatkova had studied the heat conductivity of PbTe in 1956
(ZhTF, v. 27, no. 3, 461, 1957) and found a deviation from the theoretical
dependence 1/X,-T in the temperature range 250-4500K, 11'K, being the thermal
resistance of the crystal lattice. The object of the work was to study this
effect in a larger temperature interval (90-6000K) and extend the investiga-
tion also to PbSe. Fine crystalline sintered samples and large crystals
were used. They had been obtained by Ye. D. Nenaberg by cooling the melt of
stoichiometric composition. All samples were annealed at 600-9000K. The ap-
paratuses for the measurements of heat conductivity were those described:
Ye. D. Devyatkova, A. V. Petrov, I. A. Smirnov, B. Ya. Moyzhes, FTT, 2, 4,
738, 1960. Apparatus A was used for the measurement at 90-4001K, apparatueB
Card 1/4

23101
S/1 b 61 /00 3/CC1 /-%C'6/C42
Heat transfer on bipolar B1 01 Y3214
at 300-8000K. The electric conductivity and tnermo-emf were sim,itaneously
measured in BI only the thermo-emf was measured in A. K I was calculated as
difference from the measured total heat conductivity vi e. Ke was calculated
according to the Wiedemann-Franz law taking into account the degeneracy.
Fig. I shows the function I/K 1 - 1/(X -)~) fur PbTe at different hole concen-
trations. PbSe showed the same behavior. It is f~)und that the deviation
from the linear course is connected with the degree of purity. An additional
heat conductivity by mixed conductivity and heat transfer ty %.eans cf
electron - hole pairs is assumed. The expression is.
AX- AO(k/e) 2T[,&E/2kT + 2]2 (1), where 0 is the electr,.c conductivity, LE
the width of the forbidden zone at the temperature T, and e trie electronic
charge. A - 4&b/(1 + &b)2, where a - n_/n+, b - u_/u . are the ratioB, the
concentration, and the mobility, respectively, of the electrons and holes.
Eq. (1) was checked by measuring the Hal. cce!ficients and tne eectrc
conductivity. On the basis of the relations n-n. - n' - n 'n' - N, and
ma, +
n n';
, (n-, n+ are concentratlona of' free o,octruna and N 19 the
Card 2/4

S/18 61 /0C3/OC5 /CC 6/C42
Heattransfer on bipolar ... BIOIX32'4
concentration of the minority carriers) it was calculated that a - n-/In-
for hole-type sample, and a - n +/(n+ + N) for electron-type iample. n ma 4 for
3)3/2(m-m-)3/4exp(_,_ J
PbSe was calculated from n 2(2itkT/h _~,/2kT) , where m*
maj - + I
is the effective mass, m~_TO-4. Since the temperature dependence of m for
PbTe is not accurately known, Ra - (3n/8)u + (1 - ab2)/(, ~ ab) is taker. "or
the calculation of a, where u -T- ' 5. It was assumed that b - 2.0 for PbTe
and b - 1.1 for PbSe. For the calculation of n maj and 0,',cvalues ofaE were
assumed which were in the neighborhood of values obtained by optical
measurements and comparjable to the data of Gibbson (R. A. Smith, Physics,'
20, 925, 1954) and W. W. Scanlon (see below). In good agreement with the
- C.32 ev in
experimental data, the calculation of (1) yielded: for PbTe ~E
the temperature range 436-7000KI for PbSe nE - 0.30 ev at 5000K and
,- - 0.34 ev at 7000K. The additional heat conductivity of PbTe and PbSe is
explained as being" to heat transfer as a consequence of bipolar diffusion
of majority carriers. The participation of excitons assumed In the
previous work is thus not confirmed. There are 2 figures, 2 tables, and
Card 3/4

Heat transfer on bipolar
23101
S/161/61/003/005/006/C42
B100214
7 references: 5 Soviet-bloc and 2 non-Soviet-bloc. The reference to English,
language publication reads as follows: W. W. Scanlon, J Phys. Chem. Sol.,
1, 423, 1959.
ASSOCIATION: Inatitut polupro9"odnikov AN SSSR Leningrad (Institute of
Semiconductors, AS USSR.-Leningrad)
SUBMITTED: December 3, 1960 AmL
Fig. 1. Heat resistance of
the crystal lattice of PbTe
as.a function of the tempera-
ture. 17
Legend: 1) n+ - 5.2-10 cin
2) n+ - 1.2-1019 cm-11
a) cm-sec-deg/cal
(n+ = concentration of impurity
hcIes).
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0 100 too 300 400 500 500
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L-10583-46. Mq(m)/T/EWP(t)/E _b)/EW
---WE( - A(C) UR/0181/65/007/010/3054/3(__'~
ACC NRs -AP5025306 SOURCE CODE: k2
AUTHOR: Yerefeyev# R S * lardanishvili, Ye. K. ; Petrov, A. V.
i i_ ~~" Vt/ ~~ ~_ .. 7r~' 5- (r &
ORG: Institute of Semiconductors AN SSSR, Leningrad (Institut poluprovodnikov AN
SSSR) 97, ; ?,
TITLE: Thermal conductivity of alloyed Si-Ge solid solutions
1.7 -0 W ) _ I
SOURCE: Mika tverdogo telas v. 7, no. 10, 1965, 3054-3062
TOPIC TAGS: solid solution, semiconductor research, germanium semiconductor,
semiconductor, heat conductivity
ABSTRACT: The authors give some of the results of research undertaken in 1961 on th
thermal properties of the Si-Ge system. rhermal conductivity was measured in Si-Ge
solid solutions with 5.3, 8.5, 15 and 30 at. % Ge as a function of temperature and
dopant concentration. Specimens with 8.5 at. % Ge were studied from 80 to 3000K,
while those with other concentrations of germanium were studied in the 80-11000K
range. Boron was used as the doping Impurity In all p-type specimens, while phos-
phorus, arsenic and antimony served as dopants in n-type specimens. Maximum concen-
tration In p-type specimens was 5.4#1020 cm-3. while in n-type specimens the maximum
concentration was 2.5*1020 cm-3. The n-type specimens with carrier concentrations
abovo l*5ojO2Q co-3 WeM unstable above 600-7000K. and data are given for them only
Card 1/2

L 3J)583.
ACC MRs
at temperatures below 6000K. The thermal conductivity of the crystal lattice is Iso
lated by taking account of various other mechanisms which may be responsible for
heat transfer. Curves am given for thermal conductivity of solid solutions of both
conductivity types with various Ge concentrations as a function of dapant concentra-
tion at various temperatures. It was found that doping causes a considerable reduc-
tion in thermal conductivity in all cases. Reliable values of thermal conductivity
for pure Si-Ge solid solutions were obtained by studying the temperature relationshil
of thermal conductivity in lightly doped specimens (p a 3_5o1017 cm-3). These value
were compared with the Klemens model in a wide temperature range. The reduction in
the thermal conductivity of the crystal lattice due to doping Is explained as the
result of phonon scattering by impurity ions, assuming that the relaxation time in
this scattering mechanism is independent of phonon wavelength. The authors are
grateful to V. S._Zg2gko V. V. Rozhdestygnsk!X for furnishing the p-type Si--Ce
,v. and
specimens, and to N. W. -KochgMya for assistance with the measurements. The authors
thank L. S. Stil!jbans and B."U. "FIns for discussing the results of the work and
for the valuable 'd6mments made by them, and also D. N.,MiRAn and 0. 62. '902v for me
surLng the absorption coefficient. Orig. art. has: 6 fijures, 4 formUgs, 2 tables
SUB CODE: 20/ SUBM DATE: 26Nar465/ ORIG REF: 009/ OTH REIN 016

L 23154-66 EWT (1)/g",7 (m)/EWP (t) 1,7P(c) JD
ACC NR: AP6006837 SOURCE CODE: UR/0181/66/OnB/002/0500/050A.
1AUTHORt 09 tordanishvill Ye. K.; Petrov, A. V.
;;ORG- Institute of SemiconductorsgAN SSSR, Leningrad (Institut poluprovodnikov AN
SSSR)
';TITLE: Metrical properties of solid solutions in the Si-Ge system
f
~SOURCE: Fizika tverdogo tela, v. 8, no. 2, 1966, 500-506
:TOPIC TAGS: solid solution, germanium, silicon, current carrier, conduction band,
isemiconductor band structure q electric property
I
.ABSTRACT: Experimental data are given on the electrical properties of heavily dop-
led specimens of solid solutions containing 5-30 at % Ge in p-silicon and 15-30 at
Ge in n-silicon at temperatures from 100 to 11000K with particular regard to the
mechanism responsible for scattering of current carriers by lattice vibrations at
;high temperatures (above 4000K), by ion impurities for the case of deep alloying
land by nonhomogeneities in the solid solution. The authors discuss data on the
energy spectrum of holes and electrons at high energies produced by two independent
lCard'1/2

L 23154-66
ACC NR: AP6006837
methods: increasing the temperature and filling the bands (deep alloying). Curves
lare given for themoelectromotive force as a function of current carrier concentra-
tion in silicon-gemanium solid solutions of both conductivity types. Graphs are
also given showing hole and electron mobility as functions of carrier concentration,
for various solid solutions. The resultant data are used for calculating the ef-
fective mass of the density of electron states. It is found that the effective mass
~for the density of states in solid solutions of germanium in silicon is comparable
to that observed in pure silicon and increases with temperature. This indicates
that the parameters of the conduction band in solid solutions with a compasition
iclose to that of silicon remain the same as in pure silicon. rrcm this, it may be
1concluded that the amplification effect in Si-Ge solid solutions is extremely small.
'We are sincerely grateful to V. S. Zemskiy, V. V. Rozhdestven!sLkaja and R. S. Yero-
Ifeyev for furnishing the specimens and to B. Ya. Moyzhes for participating in dis-
jcGsio of the work. Orig. art. has: .5 f1gures, 3 Fo-mulas.
SUB CODE: 20/ SUBM DATEt 16Apr65/ ORIG REF: 005/ OTH REF: 015
2/2

ACC NR, w6olA482 SOUBCE CODE: UR/0181/66/008/007/2154/2162
AMOR: Mal'tsev, Yu. V.; Nensberg, Ye. D.; Petrov, A. V.; Semiletoy, S. A.;
Ukhanov,--Yu. I.
ORG: institute of Semiconductors AN ISSSR Leningrad (Institut poluprovodnikov AN SSSR
Len f ngrad)
TITLE: Electric and optical inventigations of rbS
Z
SCUFCF: FiziKa tverdogo tela, v. no.
qT~PIC TAGS: lead compound, sulfi-l-, rcnaucti-r. hand, valence band, Hall constant,
ther-moelectric power, electric conductivity, Faraday effect, tenperature lependrnce
AK'TT1AC'7: The i t.". sami I;s ir;vef~!-;i-ateul hn,! -arrier lensities from I.-,
for ajid -1 x 1 D!'" . 0 4, x cm-~ ..r wnic~~ Rre h.zner t-1-.ar these
used in ear,ier investigatior,s. "vasurements wer- made of t~e !:alli --effic't-t, t.-
tner-maelectric power, the electri.: conduc,~ivity, tl~e Faraday cffect . Fuld the ritscrp-
tion anti refiection spectra in a t-nperaturu range from Rr to '4COK and 1r, a maFnetic
field of 6 KOe. The c r- f r(-,m t m It.
ystaii; wf-re grown by Blowy cooling. he e Dopi'lg was
witty ctilorine (ri-type) or silver (j.-Lype). Tests werf- filso mndc on r-pita-xinl filng
wiLli Lnickness from 2 to 16 microt,s. The apparatus for tiv, ha-11 mensurements was
described earlier (in: TerniueleKtricheskiye svoystva roluprovodnikov, lzd. AN SSER,
k-.,d 112

ACC NRt AP6024482
27, M.-L. 1963). Plots of tne tem;~erature dependence cf the tLermmoele~'.Iric aLd
of the effective masses, as well as the absor-,tion u.d reflecticr. spectra, are -re-
sented. The values obtained for the effective masser; of the state denflity
-).L6) and of the conductivity m (U-13 -- 0.3") agree with the modal of four equivalpnt
c
minima in the conduction band, witt. m M -he agreement is pocr f~r t~.e vC -i,c-
tsuid. Orig. ar-t. has: 5 figurer, rormuifts and tatles
SUB CGDE: L"O /SUBM DATE: 'If it, c 6', /ORIG REF: 001d ME RFF: 019
cir j ,/,? ~

9. Monthly List of Russian Accessions, Library of Congress, -1952. Unclassified.

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f1ame t MROV, A. V.
Dissertation I Experiment- 1. -orn irrigation in RGBt0V
Province
Degree r Cand Agr Sri
I
Defended At I Moscow Order of Lenin Agricultural
AcadenW imeni K. A. Timiryazev
Publication Date, Place 1956, Moscow
Source Knizhnaya Letopis' No 6, 1957

FET!4 7, , - .I -
. , . 71 ., * . ~ . ~ 1 .1 . - I.
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I . V r .- v ~ r I .-I , I , ~ ; - , '..%. 13 * , .. -. :Y % .
k ? - I it I " - )

OV, A.V., kBnd. eel I skokhoz.nauk. laureat Stalinakoy promii;
rAM TI . N.A.. oty.red.
[Fruit breading and now fruit varieties] Selektaiia I novye
sorta plodovykh rastenli. Roskva. 1960. )6 p.
(MIRA 14:1)
(Fruit milturs)

PETROV, Aleksandr Vasil 'yevich; UlDIETSKANA, L.V. , red.; SAY' AEILI ,
L~D . tekhn. rcd.
[Manual on the complex mechanization of the cultivation and
harvesting of sugar beets] Spravochnik po kompleksnoi mekhani-
zatsii vozdelyvaniia i uborki sakharnoi svekly. Moskva, Izd-vo
M-va sell.khoz..RSFSR, 1961. 131 p. (KIRA 15-7)
(Sugar beets) (Ag-ricultura.1 machinery)

VISMIENSHY, A.1, .; VISIDIEVSKIY, E.A.; KIJZI.Ib-SOV, T.A.; i V V
P _ PETI 0 , -A. . i
RUIZVIC!-~, L.% ADEL' FINSKAYA, Ye.N., red.; SAYTINIDI, L.D.,
tekhi). re~.
[vanual on sugar-beet seed production] Spravochnik po liveklo-
vicbnon,u i3emenovodstvu. Moskvn, lzd-vo 14-va aell.khoz. i(agi,
1961. 1,10 p. (MDA 15:3)
1. Finisterstvo sellskogo khozyaystva RSFSR (for all except
Adellfinskaya, Saytanidl).
(Sugar beets)

PETROV , A. V.
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US.9R/)*tallurgy - Welding, Argon- Sep 52
Shielded Are
"Rffect of impurities in Argon on the Quality
of Argon-Shielded Arc Welding," A. V. Petrov,
En9r, Stalin Prize Laureate
"Avtogen Delo" No 9, pp 5-8
Stud-iec effect of N and 0, basic impurities
in A, n quality of Joints obtained in weld-
ing aliumin,= alloys whi-h are considered ae ma-
terials req,,;.ring highest pirity of A. Presence
of up to 1.0% Vand 0.5% 0 in A have no effect on
232T76
for tion of pores P.A.,; avities in weld metal.
These defects are possibly caused by gases
dissolved in base metal. Reco ndz 99.7%
pure A as optim= compn. Impurities In amt of
0.3% must consist of V and 0. Max conen of 0
has to be --,.05%
232T76

PrrRov, A. V.
TIROKHIN. A.A.; PIOROV, A.T.; BOGACHV , K.N.
I
Examining rapid phenomena in the welding are by taking motion
pictures. Avtom. over. 7 no.1:59-63 Ja-F 154. (MMA 7:7)
(Electric welding) (MovIne-pictures in industry)

UWE-n-gLneering - Welding
-cam, 'A Pub. 128 - 18138
Authors i Petrov; A. V.
Title t Are welding of stainless steels with a melting electrode under an
atmosphere of inert gases
Periodical t Vest* rvash. 9j 68-70s Sep 1954
Abstract : The author points out the advantages of the argon are welding with a
meltine electrode. He clai4p that the above mentioned method is more
economical than the tunesten electrode method and more adaptable than
welding under flw,,. DruwinLts and illu3trations depicting welding pro-
cedurcs aro projentodv and a table is L4ven on tecluAcal sp,_cific,~tions.
Gr,,,ph.
Institution
Submit,tod

0'r4ager'if mitd 16 the' jiWi
d
of
d*ttmds In 8 9" S~~Cff. AA.
MR -"hb4peW
No-4d%AVODj.-
tmpby & .Uwr blvestilated the natum of the pm-
to of tmtd tmnsfef In a welding we in relatIm to the ca-
not, pakdty, and axdpa. ot the gas envesope. it is dbWn
P that thae is a ait. cwtent Mw each lectrade site wbkb Is
Wso fadoemed by th effects
type 61 gas stm, The sp6cific
of A MW m am mentkatd. Rxecloye gwaying of the
trander metal to ckumed by ustag the dktct ty.

FBT140V. A. V.
Arc pressure on a weld bath in protective atmosphere. A vt oz. ST&T . 9
no.4:84-89 JI-Ag'55 (MMA 9: 11 )
(Electric welding) (Protective Rtmospheres)

AM Stitt$
MOM =me pn 0
Musdan.
Oct., P.
we MISMIT steek w1wo N is pi~mc in A. remko
in IlwatImliClo of Q* Woiftl A " k-GM, With the (OnfttfM Of
stow In rtwkwl ekm(mw the phhiw(km pCoverifes d 71
M a embMs fambill ek"wMl and rMcfbalea to the forawflon
..A( hd crocla TAM* xrq+s. mWor p1w, 0 rcC

A ID P - 5067
Subject USSR/Fngineering-Welding
Card 1/1 Pub. 107-a - 7/11
Authors Verchenko, V. R., A. V. Petrov, and M. I. Baranov
Title Automatic welding of non-turning stationary pipes
Perlodical Svar. proizv., 6, 22-26, Je 1956
Abstract The authors describe the technique and equipment for auto-
matic welding of non-turning tubing of stainless steel tip
to 219 mm in diameter. The ATV automatic welders with
melting electrodes and with Infusible tungsten electrodes
were used and the test results are given. Four tables,
3 graphs, 6 photos, 6 diagrams and GOST standards.
Institution Scientific Research Institute of Technology and Production
Submitted No date

SUBJECT: USSR/Welding 135-8-3,
AUTHORt Petrov, A.V., Candidate of Technical Sciences.
TITLE: Shielding Gases for Arc Welding. (Zashchitnyye gazy dlya
dugovoy evarki).
PERIODICALs "Svarochnoys Proizvodetvo", 1957, #8, pp 6-10
ABSTRAM The article represents a summary of data on effects of inert
shielding gases, obtained in many years of experimental inves-
t1gation at the welding laboratory of "~','AT " . The effect of
:2 '2' with additions of oxygen and CO to the
argon' CO 2
shielding ;n welding of aluminum alloys and of ?ow and high
;a
alloy steel ( 3CXr( A " , ,i.K , EWqT 'I) has boon investigated.
The process of metal transfer Inside the arc In various shield-
Ing mediums was studied with a high-speed photo-camera. The
welding conditions leading to formation of cracks and pores in
weld metal, and those producing sound welds have been
established.
Addition of 3-5% of oxygen into argon stabilized the arc and
Card 1/6 resulted in sound welds even with increased welding speed.

TITLE: Shielding Gases for Are Nelding ~_"&shcn1tnyye gazy dlys
dugovoy evarkil.
Welding in CO 2 - with other conditions identical - was accom-
panied with frequent exploding of metal drops on the electrode
tip and caused splatter. Minimum splatter was observed with
additions of 2-3% 0 21 or 5% CC 29 or 1-2% H2 into argon. Differ-
ent welding technologies had different effe,ts on splatter in
different shielding gases. Reduced arc length led to increase
of splatter in argon, but to less splatter in CO 2. The cross
section area of welded beads varied with varying concentration,.f
CO2 In mixturqs of AR-CO 2' Addition of 5 % nitrogen into
argon resultel in a dense mass of pores below the surface form-
ing a pine-twig pattern, whereas the weld surface remained
sound and smooth. Addition of 5 % air into argon had similar
effect. Single pores were detected in specimens which were
welded with wire "20xf-CA" in argoni an addition of 5 9 0 2 or
CO2 did not markedly change the density.
Sound welds were obtained by welding in argon witt. 20% :0
and by welding in carbon dioxide with wire "204FC4" and ~~OYMA".
Apparently, the reaction C+FeO CO+Fe (the basic cause of pore
formation in welding of low-carbon and low-alloy steels in argor.
Card 2/6 medium) is inhibited in carbon dioxide medium.

TITLE: Shielding 3aaes for Arc Welding (Zaahchitnyye gazy !,Lye
dugovoy evarki).
Dena@ welds in steel "50,rr[A" were obtained by multi-layer
welding only in carbon dioxide, or in argon with admixture of
over 20% carbon dioxide. StFel "1)(18H9T" is less prone to for-
mation of pores, and dense welds were obtained in argon,
and in mixtures of argon with nitrogen or oxygen fup to 2at!.
Presence of oxygen and CO 2 in shielding gases leads to losses
of alloying elements.
The analysis results of weld metals, welded in different mediums,
are presented in form of a table. Tt can be seen that titanium
partly burns out and forms stable nitrides. Welds fully stabi-
lized by titanium were only obtained in pure argon. The active
titanium did not provide full stabilization of weld metal against
intercrystalline corrosion when welding was done in 3atis-
factory intercrystalline corrosion-resistance after a iw'o-hour
heat treatment at 6500C was only obtained when welding in pure
argon or pure helium. The welds made in CO 2 and in mixtures of
argon with CO2 and with oxygen were prone to intercrystalltne
corrosion. Increased content of oxygen. CO 2' and particularly of
Card 3/6 nitrogen in the shielding medium led to increased tendency to

!I~ 1~ - .) - " : 4
TITLEi Shielding Games for Arc Welding (Zashchitnyye gazy liya
dugovoy sverki).
formation of cracks.
The tendency to formation of cracks In welds is stronger in
than in argon, which is to be taken into account in multi-laye~
welding of corrosion-resiat&nt steel.
The following recommendations are made concerning the use of
the different shielding gasest
Low-alloy construction steels may be welded in carbon dioxide.
The games can be mixed in the process of welding with rotameters
"PC -3". For gas admixtures up to lCr/6 rotameters "PC -!a" are
recommended.
Many stainless ateels,not stabilized by titanium,can also be
welded in CO 2' Steel "1~18t19r" for service at temperatures above
3500C should be welded in pure argon, but may ~e welled In
or, 2
for service at temperatures below 350 _
Are welding with melting electrodes is used for welding materials
of over 1.5 mm thickness. Stock thinner than that can be welded
Card 4A in shielding gas with tungsten slectrodu The use of multi-atom

TITLEi Shielding Gases for Arc Welding (Zashchitnyye gazy ilya
dugovoy ovarki).
shielding gases is often advantageous, as they are inexpensive
and possess positive properties. But these gases are not quit-
able for tungsten electrodes because tungsten divintegrates In
th (H is an exception) at high temperRtures. Combined shield-
in:mby iseding argon through the inner nozzle of the torch will
shield the tungsten electrode against destruction, and feeding
other gases (CO or nitrogen) through the outer nozzle will
shield the welding puddle from the air. The velocity ratio of
argon and multi-atom gas of 1t4 up to lt3 gives sufficient sta-
bility of tungsten and are.
Combined shielding with argon and carbon lioxide is applicable
in welding of thin-sheet, low-alloy, and some stainless steels;
combined shielding with argon and nitrogen can be used in weld-
ing of copper.
The experiments were carried out in the Institute for Physical
Chemistry of the US3R Academy of Sciences by M.M. Kurtepov and
A.S. Gryaznovs.
Card 5/6

PETROV, A.V.
Metal transfer In the arc and base metal fusion In welding in a
protective gas atmosphere. Avtom.ovar. 10 no.4:19-28 Jl-AC 1C,7.
(MIRA 10: 10)
1. Hauchno-isaledovntel'skiy institut tekhnologii I orgRnizntail
proizvodstva aviatsionnoy promyshlennosti.
(Blectric welding) (Protective atmospheres)

PETROV, A.V.. kRnd.tekhi.rtAuk
Arc welding In nn atmosphere Of Drotertive gnses. 5vAr.proiry.
no.11:21-24 N '57. (MIRA 10:12)
(Nlnntrtr~ welding)

1 09C

z z

Z Z -i W~

rr
T. X 'jZ ,4

.5s -r

2 1 D90
e a -
f

210 -,m dianeter, t.,~p - x'
t?~c W.-Ided work 111 Ulf. T'! ty 'ane:l c
.3 111 e I d I T I g 1), - op - v t 10! 1 .r t r, i i re -v, r;i~)f Vn,)r,-)X1diZO(-i -ol-
wl.F'n % ;I - ';J-l ba
"f" gar, , et. L' . t)aS!;-
q,i11r,e-!-ntr, to the dos:6,1 ~~3n,
assuring optimurn as ~~!Jc)ws: a) tne nozzle be de-
ter-min ited 1)y a Cylindrical pw-1 -,,dose :c.!qrt~i must riot be below t!;p o'
ti . e I f-, it pe I, tu T- :h )thf~ Ifiln(' tt' 1) fU I (! ')0;F, Z ', f! I ~U t I fl t 11 pt?," ti. T"' W Vt' (I I rig.
w1th t oLectrwitsn, -nin', b~ L' I," -nrn kinder wv.C!LngckTytttur ~A-3ed.
I d be '~Jsod :'or we I d i "'g e
t' 1 T-b:1r, e~ t;y
w'r..)r -a ro we rq~. it "P:- s shou Id tw 5upp I
. - qbr)1j t
run 1.ww io.~.~ 0! fwpw-ri~r' ets with
h1gh o-itlet !,p,~,~d sliguld ~f! abnoll,itely prev-!nted; f'or this pur-pon;, tl~e Insertion
01, dra!*iecto!'S !S ;r, '-t:e 9:*vitneemerit o!' the channein per-perid1cular-.y
to t.-I noL,,:p wn.'!; 'I; nozzle edee should be unrounrl-! ind c I pfir,
At t',p irtv-t rojzzle diameter Kns con-
sumptf~)n rfilres t.;e pvoper-ties _)" ttle et only up to a cevtaln 111mit;
ca r.(" %, ._~

a 690
A(Xk/AO'
Bey-rol this .-,i.er Increase o" Fas 'Onv-imptlon Impairs tnIf s.,.1'elding pro-
pf,r'. I on, . For murr dllamo-ts-r iwzz'es, best shielding propertlen oI the 'et are
observed ri t nrgnf, -ons,impt I oii. Hlg~~er current Intensity rnlspn the dis-
turbIng e! the are on t~~rf fas 'Pt. 11,o~ref'ore, It IS iMperntIVP '10 ITIcr-ell.-If!
!)OZZIF? flfl~" gns (-)ri-surnptlori nt, higher current IntersIt1eF'. For :8
mm diameter the (111stanoc 'rofq the work piece should not exceed I- -, -.n
~t mm even bet*.,~-r properties ol' the gas _r!t are Inef.'ective
at ill~y ~!- - : ind 1, rorferf~f)
" ~"." I e t . a/ Jawuv-&,d wjAr
FIFrur, ': Figure 2:
c d aw - e)
sc`~ era t 1 C
Ing o,.* free ar- Cl 36ov qwmato Ar represent-
gon flow "rom ation of
the nozzle a
the catho.
shielding gas or C
dic spray-
(argon); b-noz-
Ing pro-
zle; c-pu,-(! ar- zoo ra- ~.'h
gon zone; d-cIr- ALO 0 4 a 4 9 9 a 0
Cc fe
cumterential 19
LOne ot argon arid
Card 4/ 1-11 air mixing; e-air

3/1 35,/61/Nk/GC7/C,_ ?/0 1,
AUTHORS: Petrov, A a,~ e 7,~ , nr, I _- aSe ne a nt r , Y.-r, &r., M. M
Engineer
T -M~E The ef~.- w,:.Jed ) Ints un ~he ieis
ty,,e 6tee.s
PERIODICAL: S~;ar,,-h~n j- ;r-,zv ~rfs-.vQ, no, f, ',r,)b',,
TEXT. The authcrs lnves.gated the possibility of ralElrig the strength -,f
weld joints of austent&--r.-ar~.s.'.3te stainless steels by rolling with subsequent
aging at 480 0C. Grade "12 &nd C, -, 3 (SN3) steel spec Imens (3, - . mm) were
joined by automatic argon ar- we,dlng without and with filler wire under the
following conditions w '. --:-, ) i -~ f I I i e rmetal:170 amps; U - 9 v; v - 15 m/h;
with I mm-diameter f..ier w:.-a : - ampsi U 12 v; v - 15 m1h. Cold working
of the welds was performed by rL-'11ng -~n & cantilever machine, A system 3f
compressing the weld la sr,~)w- '~n Fig, 1. The deformation of welds was approxi-
mately evaluated from ~npir tnInning. Roiling was performed after full cooling-
off of the welded spe2im'?ns ne effect of fastening the specimens, &nd of the
rolling force 9n th- -f tPfDrma*ion was studied on dev11-es designed by
Card !/4

2 ,),Qn
T he ef Ile ct of roll ir,A we. i-i
S. A. Kurkln an,I a'- M~7J ,m. ha~~rr&n, The specimen was fas,~ene-: eltr.er -r.
a backirig plate or in a fra-,re (F,g I- ) . The ~ os 3 1 b I ~ I t7 f 5 * :-erLg_ tnen: rg N e I ~ ~j
Joints by uitrasDnil~ trea'~me.- was a-s(-,. Investigated, using :' .6 mm T-n,.-x SN- 3*~f*e.
specimens and a "G kv generator at 20 cycIes frequeniy. As a rps-t of
the tests performed tr.e fa-3wing --)nc:us1ons are drawn; The str,~rgtr .f we'l
Joints of the Investigated 3teels is be'ow that of the base meta: du-9 to 'j',e1r
austen1t1c struct"re. Tne weId.1, ,:an be strengthened by ~~Gld worKing witt. t,'.ee.
rolls and subsequent aging at 48GOr-. During cold working the der,drit!- structure
of the weld is destr~yel and d martPrIsIte phase is formed, which Is 3ubjertert to
dispersion hardening a~ 11, . The degree of strengthening c f tne we I I ( I , P.
the efficiency of ro, 1 Ing) , s raised with rol i Ing force Increasing up tr' 3, YA-
4,CGO kg. Its fur~.h,?r rise s~ntais greater warping of the specimen without
notioeabla Increase of -,he qe.j strength, Tne number of ~)asqes and tne system
of rolling the weld ha%,) r-y t .-'-Igh,. effect on Its mectianl,al propertleli Tne
method of fastening the bpe-:TPn affe,t!j the strength of the well. Highest
strength Is anown by specimens rDlle.l In a frame (Fig. ,) . hr-Ing ind ag,,ng
considerably raise the inechar.ical propertios of the weld lolnt At, higher test
temperatures (by a fao!-jr -,f nt 4~11)0( Ultrasonlc treatment of tne wold
produces surface 5treng~i.er,;:'.w f Uie ineta.' without raising %he
weld joint,
C ard 2/4

A','TR 'R rov , A pt r: r. e~ F, - 'w
F E'.R L
TFX? I f'o r -n,41 1 n
a ro,--) n R r - m,. + ~ 2 1f roj ('H ISN) q 11-- 1 1 ~.Pa + + 7
unif-)rT,, strFrkrt~ -)f we: 'e' -c,:nts Tho
austs-r.4tp-mqrtensit-? -lass iF wile! 'v m D.,; a - 1 n
t rY . 'hp -omp,)si o ri o f r- wra 1 f s ir r. t
Pp rr 9 ri tage ht2rr i - ri I - orrpo s r.
Steel r _N i A Mo Yr
~)c - 0 14 .0- 1 c 4
c', N 1 4 c
SN4
-ard 1 14

prop- r* I --i )f I
n -'t D rm a 1, 1 ~-q r.
tenq I Thf, pr-gpr a j -- rm,i
(ac(,or! r.;, o atr~ ic,vp -)-,PI Y-I M. P 0 a v V Sa - -I a
nw q - C , ~) C, ,
m 0 1 u , 11 S -J at elpvqt~! tP7 ,Pratur- i Tp F ii-n-r
o 11 h e r s -P o r ri 1 ovF q i n i n.- a : ~;m i n,~ -i ;i n :i ri ~ , M
is ne,eFshry in wel lirw '.o r?-o*,-,,t .he me' t 1 from -X4 1,11, p
metal npar thp welds au t e r , t m:i7-*--F:Ip 9 r. r t r -
a r ~ i s ma -4 m, i r. F '. r - !F T 7. T- -1
'-a 9 m e t -a al .9 o ~~ -i s r- s " r,, n w c! f
tic a,js'-n,, +r~ s*r~j-'-irp, g~ p na~;e mp*a: 7
a u F r i * e s ! ru - t r P w i a 7 It PIrpresspi r~..-! y 9
.P,- n a y i m 7 o F;.9 3 ra 1. s e r-r.vl~ of 9 wp w
C-jrrerl ar.1 !-"7 1 v r

2!17""
- I I- ~~ - II , I ~, , Z- - I ~
Tl,e propertips of welded .4o4nts... ~04_ '~. I I
rrovei 'hat t~~e 4 ints -oull tP wrPitly strpngt~~e-.el ~y normaliza' R
9~0-075'(I' vi th subsequen t - o I J t rea tmpr. t f or 2 ~~ ~,u rF -i ' -'C"' anl ;~,w i Y, w
I ~iour a' 450-4900C. Cold treatment and aging alone w-aF, inef-
t i v P .Fli:l treatment (normali7ation, coll treatment a n 1 a.7 4 r: wwas par-
ti-_i!ar'Y e'fective in str-ngtY;
"ning SN4 stpel , but did not mprkpi in-rRzP
the vibrat4on strength. The resis~qrl,p )~ we:j-_~ to ~-nora' -OrroFi-n was
high; howevpr, intercrysta' line corrosinn tev-,'oT-i ir
+he welds in the area where t~,.e car*,i],-s were more qPPqra*P!. H-at*r.W 't
about 90,00C caused increased formation of carbides and the hiwhpst ~n,pr-
crystalline corrosion. The SN3 steel was the grade most pronp to in*er-
-rystalline corrosion, particularly after normalization and -old Ireatment
Prior to welling. Full thermal treatment aftf-r wellinw fully eliminated
this concentratel corrosion; by increasing the aging tpmperriture to 1~0-"00
C, the carbides were separated in the well metal where in'Pr-rystal:Irr- cor-
rosion was observed. The fo!lowing conclusions were jrawn: (: ,. Welled
joints of SN steel have a maximum strength of 91-1~0 kw`mm.2 arj a yie:l ". i m, -t
of 35-60 kg/mm? after welding, regardless of the stqte of we'lAl ~Iemer,F
prior to welding. (2) Fu'l heat treatment (norma'lzatfon, -oll
and aging), may raise the maximum strenprth an! yield point -)f ws,'IPI .4 i,;ts
lard 114

The prop(-rties -)f wi~!!P!
to about thp streni7th and yie.1 limit of the bqge me-il R' room
and above. (1) Welling lops no+ t~e goneral corro-on
SN but we',Ioi 4~,ir.!q marie of 11-4!, st~4-1 arp :-rort, !,,
rorrosion in th- zone of increnqed ~nr~i!p f,rmat:-n- F,;''
raises t~e in'ercrv,--t-k'' , n e c o r r o s i -- n r P R : s * a r - P1 .7 : n 7r r1 j f PP
+
in SN, j+,el hay, S r o s r 9 - a,.,-
not t~xcped d
[Abstractpr*8 note: E~sentia'ly compl-e 'rqnsla':o
nj re arp - f i-
"res, 4 tables and I Soviot reference.
SUBMITTELt September 2, 1?6)
Card 4 !4

1 MOO
33550
AUTHOW9. Potrov, A V , CarAlda*.r- A ~.glrvc-
TITIE~ A,itomatlc weldir.9 -,f steel sheets w..,. a --sa.Inq a: a:'PzC'1
a '~Mc 5 Pt le re
FERIODICAL: Svarocllinoye pr-)Izvoris~vo,
TEXT, Difficulties in welding ste.-~l sneets , .'ess riari MM) ar-
~,Idely ei'minated with the aid (j," a pulsating arc combined viler. ar~ "aux'_lAr-y" a!---
In argon atmosphere. Pie pec,,..'arily -)f triis ffe,~r,,A ls ~tie maintenance otl an
dependent ').8 - 2 amp arc between the timgst-en electrode and tne part to be welded
The pulsating arc Is superposed unto the auxi,lary arc. The -ontinuous bur-ning cf
the auxiliary are ellininates "straying" of the pulsating ar- during its repeated V~
excitation and assures constant electric parameters fit the propess arid stak~le 9P( t
dimenslons On Lne basis of special InvestIgat ions, a power supp,y source and
a technology were developed for weldin& with a pulsating aria. Tne process Is Pe.-
formed on a copper backing plate In pneumatic r.ose key-type clamps. 7ne bact(I-.g
plate has a longitudinal groove ") 15 - tj,2 mm deep and 1.8 - 2,-~ mm wide. To
reduce warping of the edgAs, It Is recommended to use "rigid" welding conditions.
However, an excessive reduction of the pulse duration may cause under-cuttIngs or
Card 1/0

Automatic weiding of triln oteel shepto. A,)Oh/Al~)l
lhe perlphery --f T-, -alse Itte slat-l'a l),jr%!r.g (-I' 'na a,x,':1a~-j 8',,J ~"'e
pulse ar::, 1~ Is rr-ommended '-o employ a tungsler. (,lp-trc~de of I.-, mm In d'ameter,
tapered at 50 - 44')o Approximate welding conditions are given In TaDIP I nle
new melJicd assures rilgh stability r)f' LhP wt9ldIng process, satlol'artory formation
of butt welds on thin ,iteel oheetn, least warping of edges. absence of sagging
seams during welding without *11ler wlre, and absence of craters In the welded
spots. Mechanical tests of 2 - , -) mm tnl-k specImens snowed that ultimate
strength of welds subjected to ~.ensl,)n was eq.,&! to '."t of *.he base metal In an-
ne a led s ta te .The specimens broi,.e- down In the weld-adjacent zone, tl,e bend!np,
angle was 186(-. There are .) 'are5 aril l-,
ASSOC:AT:ON. NIAT
Ca rd 2//$ .

-fi-CE--RR-. I.P6006178 SOUPCE CODE: UP/ 01 35/f,6/C(v() V;0~/00 () IM fili
AUTHOR:~ Eelroy , At V-1-,ccandidate of tech TV ica I SC I t-ncrq SJ avin , C . A. (Can d i,!atc
of technical aciences)
ORG: none
TITLE: A study of the technical potential of the pulcc- arc
SOURCM Svarochnoye pmizvod-,,tvo, no. 2, Voil), 1-1i
TOPIC TAGS; arc weldinp., puln- weirlitis-, alloy !7,teol, T.,ir-:haniral nfronrth, wc-klin~,
equipment
ABSTRACT: The pulse arc weldinp method was evaluated by stiidvinp cortairt proccs~-,
parameters, the character of the welded seam and the heat affectpd zonp. l'irls
for the heat f low rate q r and the welding current r r a-, a fiInction of imvul:-,p time
t. and pause time t are given. Expeoiments were done on 11