SCIENTIFIC ABSTRACT ZHELEZNOV, YE.B. - ZHELEZNOVA, V.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R002064630013-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 80
• Document Creation Date: November 2, 2016
• Document Release Date: July 19, 2001
• Sequence Number: 13
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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Y
Optical.; investigation of stresses A161
AO3O
caused by themp,had up to now not been studind in expdriments for mul ti-
-roll mills. :A special, steel stand had been designed and ~Iaced into a
Ahermostat; the rolls were made of optically active 3- -11)
40-W(E-40 material
(Ref- 4, If. 1. Prigorovskiy, N. A. Kupryakova, M. P. Bokuhteyn, There was
VT T T
new optically active material on the epoxy resin base. 13yulle ten ?T T
'No. 37, -1957). The,rolls,were a precise copy of the mill rolls In.1 10 -
scale. The rolling process wan simulated withoat torquepand In static in-
atead,ofidynamic equilibrium of.forces. The
stresses vrerellfreezed" in
,
slowly cooled rolis after loading at a certain temperature. A L I
polarizer was used for photographing the isochromeaj snd a
polarizer.'with a Xraonov compensator for accurate determina-
lion of the isoclines and.isochromes in'spots on the cuts where their or-
der- or gradient was too'.1ow f or. the BPU-IMASh., Mo'rt? attention has been
..paid to stress and strainAn the axial cross uaction of the support roll,
-for its rigidity determines the rigidity of the entire foikr-high system.
The- isochromes pattern (Figure 2).and stress opures show that both the
w orkand support roll only vary faintly reaemblo a Wnt beam. lt,.was
statod.that 6 calculatedwith the conventionul fomulae, derived accord-
X
max
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Optical investigation of, stresses A161Y4030
ing to the materials strength -theory, was seven-times higher than the stress
found In experiments. The Asostates pattern clearly proved that the entire
mass of 'the support roll works as a wall-beam~ and this means that , the con-,
method of caloulating the sag of the support rolls is wrong* The
Tselikov,formulae gave a sag of 0-047 mm, the Larke formulae 0.056 mm, and
the experiment data 06OV4,m. The real,pressure epur6 along the contact
line (Figure 5) once :more e-.,onIfirmed that the work roll'works as a beam on
an elastic based and the trunnions on the bearinga have a very high effect
thef1tattening resistance at, the edges of the support roll barrel.
This observation renders the Grudev's method of the resilience factor.de-
teimination h .1 roe
-doubtfula T e1ongitudinal Mttening obviously hao an inve
curvatilre, to the sag strain. curve of the suoport roll, and consequently, Ahe
~effect of'sag is partly .compensated by-the effect of longitudinal flatten-
..ing. But such a combination Is obviously only possible at a certain re-
lation of.,the rolls and.: t.he-otrip dimensions, and three cases are possible:
1) In rolling narrow.strip with sufficient reeilience - the flattening
epure will have the same'eurvature as the sagj 2) in rolling a sufficient-
.1y wide strip, or with rigid.work rolls - the flattening may be straight-
Ained and.have no effect on the differonce of the displacement at the mid
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S/148/60/000/011/007/015
Optical investigation of stresses ... A161/AO30
and the ends of the barrel; 3) In rolLing very wids strip with vary rig1d
'work rolls _~ the flattening curvature will be inveree Ito the sag. It.may
be concluded.that there-exists,a definite ratio betwaon the strip width. and
1ho roll, barrel-length which will produce the maximum gage unevenness in
c.onstant:.oompression.. The stresses in contact are obviously higher on the
support rolle.than'on the work rollso and the wapport rolls surface must be
more su~dceptible to fatigul failure (which is obser7ed in practice). Con-
c.lusionss-1) The photoeleastic method permits quantitative and qualitative
valuation ofseparate deformation components in the joint deformation of
work and support. rollsp and in finding the optimum roll parameters. 2) it
is.proven that the work roll works like a beam on elastic basal and the
s.upport roll trunnions have a,very strong effeet on the resilience of the
L
.work roll barrel edges* At 3 ratio near 1j the support roll differs sig-
nificantly fromthe bent beam.and consequently its sag will-be more correct-
ly~calculated as a wall-beam, or by the common methodewith certain carrec-
tions, however. 3) The-conventional oalculation of.rolls for contact'
strength in accordance with the Hertz theory does not meet the peculiarities
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p ca investigatimo btreqees'~_, A161/AO30

-j`the:;, interaotion oi t 'd olls, ih thd.contact,
o
f h 'T
zone. The maximum tangen-
tial, stres,seo ~inI'the~:supporl .'roll
highly exceed
the maximum tangential.
t n a wor :r event
--a-- reased.1 th" k oll, iv61:measures st fatigue failure
again
are ekually'necess
ar for: the surface ~of work and support rolls (relaxatior4
-rational work,
periods -'between -rolls replacement s, etc.). 4) It Is proven'
.
th' h
at the! - pressure. between t e:work'and support
rolls is not evenly distri-
this Maet" be -considered, in calculati ono. There are 7 figures
and I Sovie't references.
ASSOCIATION t Mookovskiy-'institut stali" (MO
SCOW e
Steel Institut
SUBMITTED t. September 2

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AUtomatio Cross-Feed Control of Internal- Grinders 8/121/6D/000/006/004/008
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s/i48/61/000/007/005/OJL2
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AUTHORS Polukhin,,,P.I.,,.Zheleznov, Yu.D. and Polukhin, V.P.,
TITLE. 'Ways of...inereasin the:operating efficiency of tandem
thin-sheet rolllng.mllls
PERIODICAL: Izvestiya'vysshikh uchebnykh zavedeniy, Chernaya
m.etallurgiya,,no. 7, 1961, pp. lol - 1o4
TEXT: The m6st.difficult problem in continuous thin-sheet
rolling is to ensure uniform'thickness of the product across
its',width. IThe *conventional m4thod of cambering is not quite
satisfactory,since in the case of a particular.set of rolls it
is~effective only~.withinla-very narrow range of roll forces*
The:obje'et'of the present paper was to discuss alternative means
of solving thi's pro.blem. .The authors refer to their earlier
study (Ref. I -.tn'L6 journal'. 1960, No. 11) of stresses and
strains in a 4-high mill by an optical method. It was found then
that the d6foimation:of the work rolls was a sum total of bending
of the,~back-up roll and flattening of both work and back-up rolls
along the, linelof.contaet. The resultant effect of theae two
types -of. deformati on can. vary, depending upon 'the D /D
r
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diamOt.
tile
creasing Dare are
of where Dand0 and E
r 0
atios sec tiv ely 1-r
E/E I I dimension of
re P
13/L arid r It-UP rolls the B
dIj are d - Er/ 0
ric and bac and anIbut Dr/Do 'ft" 0118,
Of the 'W 0,- r t as is fiyed
,tic proPe B/L the worIcr
heir - ela4 ti a I ~r of jut IOU, ~c an
In prar-, - 11,0weve the d1latnetc CL real So t the
the 'st.riPw ant only isuch a way tha jte
d sinOel 1 imit ad exct in and OPPOs
rie
can be VOL. . I a the rolls . agnitude
ased to structing.l., aIqual in hieved by us ing
Can be incre :)n jbe ac the middle
-found only by c' flat.tOoing This cal
be. due to .
ormation to b6nditlgo - jos frolu a, osite rolls of the
def to that due var ile comp 2a c0tis'sts
in sign rigidity, such as t' wn~in Fig- i rolli
rolls, whose sho ei-shaP04 The
bacX-'UP near t'he The roll to a barr
t0 minimun, -'d ill-Tig- f,.ttted On )f the roll*
illustrate I sleeve - ddle portion ntrJc
type cal Stao he mi 20 have two C()Ilce f the rolls
1-i.ndr J. I or, t Fig. thp
of a, C, Yeve close ~y _ middle 0 or one
the Ole g 2 ra and varies froOl 11 and the in]
in Pi ctiork of steel h.n that Of the
shown 090-se is made
rolls lowert
whose sle6ve dulu
:Sleeves The~outer - - a.ticmo
th an
0 torial Wi
of a Ma
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37
1
Translation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 1, p 292 (USSR)
AUTHORS:~ -'Tarasevich,-. N. I. Zheleznova, A. A. , Semenenko, X. A.
TITLE: Spectrographic Identification of Tantalum in Niobium Pentoxide
(Spektrograficheskoye opre deleniye primes! tantala v
pyatiokisi nlobiya)
PERIODICAL: Ves't' Mo'sk.:* un- ta* ser. 'rnatem. mekhan. astrOn. fit.
khimii, 1957, Nr 1, pp 156-158
ABSTRACT: A description. is offered of, a.method of spec.trographic identi-
..fication 6f.0.3-1.5,percent Ta.in NbZO5. Standards were made
:,by introducing Ta dissolved in a mixture of HN03 and HF into the
Nb A sample (50-60 mg) was burned in an activated AC
(22,0 arc
0 v~. 6-6.5 atnp).. The spectrogram was obtained by means of
a.K,S-55 quartz, spectrograph. The analytical pairs of lines were:-

NOTIKOVA, Aleksandra Nikolayevu; KOCMGIN,, Vadim Vadim07iCh;
L.M. redaktor;
HAKOV, S.L.AakhaichookLy radaktor
[As guests of textile workers of Uruguay] V gostiakh u, taketill-
shchikov,Urugvais. [Moskva] Isd-yo TTm8PS Profizdat 1956i 75 P.
IKW 00)
(Ruania-Pp~aticam . (Ooneral) with Urogusy)
(Urogw-Ralations.(Oaneral) with Russia)

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