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Исследование условий эксплуатации пресс-ножниц для переработки металлолома с целью повышения их производительности..pdf

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…
.,
Abstract. The technology of manufacture of cast steel work rolls of
cold rolling mill from ingot by electroslag remelting has been developed.
The properties of cast forging rolls from steel 9Cr2MV-S and cast rolls
from steel 60Cr3SiMV-S have been studied. It was determined that the
cost of cast roll manufacture at 17% lower, than cost of cast forging roll.
Keywords: work rolls, cold mill, electroslag remelting, mechanical
properties.
3.
4.
References
1.
2.
5.
Belevskiy L.S., Ismagilov R.R. Puti povysheniya sluzhebnykh svojstv
valkov stanov kholodnoj prokatki [The ways of increasing of servis
characteristics of rolls on cold mills]. Vestnik Magnitogorskogo
gosudarstvennogo tehnicheskogo universiteta im. G.I. Nosova
[Vectnik of Nosov Magnitogorsk State Technical University]. 2012,
no 1, p . 56-60.
Ismagilov R.R., Borovkov I.V., Belevskiy L.S., Firkovich A.Yu. and oth.
6.
.
Ispytaniya chugunnykh valkov na listovom stane kholodnoj prokatki [The
test of iron rolls on sheet cold mill]. Stahe und Eisen. Special issue. June
2011, pp. 75-77.
Vdovin K.N., Gimaletdinov R., Kolokoltsev V.M. and oth. Prokatnye valki
[Rolls]. Magnitogorsk, 2005, 543 p.
Firkovich A.Yu., Klochkov O.S., Ismagilov R.R. and oth. Materialy i
tekhnologiya izgotovleniya valkov stanov goryachej i kholodnoj prokatki.
Sprav. posobie [The materials and technology of. Reference textbook].
Magnitogorsk, 2012. 248 p.
Bashnin Yu.A. Vliyanie sposoba vyplavki na strukturu i svojstva stali dlya
proizvodstva valkov kholodnoj prokatki [The influence of the means of
smelting on structure end properties of steel for manufacture of rolls cold
mills]. Steel, 1984, no10, p. 65-69.
Klochkov O.S. and oth. Proizvodstvo stal'nykh prokatnykh valkov na OOO
«YUzhUralTekhnoTrejd» [The manufacture of steel rolls on OOO
«JgUral Techno Trade»]. Transactions VIII Congress of rollers, Magnitogorsk, 11-15 October, 2010. Magnitogorsk, 2010, vol. 11, pp. 465-468.
621.78:672.71
.,
.,
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4%
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6
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.
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,
46-48
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48 HRC
–
10
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[1, 2].
1500-2000
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6
.
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«Colmar»
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65 .
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3
(55-60 HRC).
0,6%
———————————————————————————————————
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(
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[3, 4].
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5
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5950-2000.
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5950-2000
19
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:
1 – 0,51%;
3 – 0,55%.
350
450
900
:
550
,0
2 – 0,62%
940
980
r=1,2;
Mo=0,7; V=0,4; Si=0,3; Mn=0,6; Ni=0,8.
-006
. 2.
0,62
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0,51% (
0,6%
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. 3).
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680° .
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280° .
940°
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: 280, 350, 400, 450, 550° .
-
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5950-2000 (
. 1).
82 ———————————————————————————————————
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(
40-50 HRC);
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)
(60-67 HRC).
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. 3.
Cr
Ni,
, Mo, V, Si
Mn
,
,
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:
–
–
–
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4 Cr=1,64; Ni=1,32;
5 Cr=1,26; Ni=1,88;
6 Cr=1,22; Ni=3,26.
940°
800
280° .
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1
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5)
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HRC
4
5
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,
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100×100×100
1,83
1,89
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(56 HRC)
940° .
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550
650
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2
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HRC
51
45
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18
25
39
HRC
50
40
30
———————————————————————————————————
83
,
. 5.
.
70
1.
30-40%,
50
2.
40-50%
,
-
6
4%.
40
KCU,
6
.
2
*10 4
60
30
20
10
400
500
600
700
,
. 5.
:
;
–
–
,
,
,
55
×1000
,
5
5950-2000.
-
.6.
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-
,
1.
.
«
» .
//
2.
2005 .
-
2004.
3.
940° (
.
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1. . 8-41.
.,
:
40-50%.
6
-2009:
, 2010. . 56-59.
. 2409695
.
.,
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4.
,
). 2004.
.,
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.-
./
.,
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.
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5)
//
.
» //
.
.
.
-
.,
.,
-
«
«
»
».
–
»
«
». -mail: termist-met@mail.ru.
–
,
emelushin@magtu.ru.
.
.,
.,
.
«
.
.
». E-mail:
INFORMATION ABOUT THE PAPER IN ENGLISH
RESEARCH OF CONDITIONS OF PRESS SCISSORS OPERATION FOR SCRAP METAL
PROCESSING TO INCREASE THEIR PRODUCTIVITY
Pavlova Natalia Grigorevna – Chief of Thermal and Forge and Press Processing Laboratory, «MRC» CJSC, Magnitogorsk
Iron and Steel Works OJSC.
Nikitin Sergey Vitalevich – leading engineer of Thermal and Forge and Press Processing Laboratory, «MRC» CJSC, Magnitogorsk Iron and Steel Works OJSC. -mail: termist-met@mail.ru.
Emelushin Alexey Nikolaevich – D.Sc. (Eng.), professor, Head of Material Science and Thermal Treatment of Metals department, Nosov Magnitogorsk State Technical University. E-mail: emelushin@magtu.ru.
84 ———————————————————————————————————
. . .
. 2013.
3
…
Abstract. Up to date the important role in manufacture and metal
rolling processing is taken to knives for metal cutting. In the article the
problem of increase in firmness of the replaceable equipment is considered and the decision on one of the first production phases of metal
rolling - scrap metal preparation has been found.
Working conditions of knives for metal chipping have been analyzed, the reasons of premature failure and ways of increase of their
firmness have been considered. The reasoning for the development of
new kind of steel has been presented; steel new chemical composition
has been developed for manufacture of knives. Experimental alloys
mechanical characteristics tests have been carried out. The optimum
mode of metal thermal processing to achieve minimum rate of knife
cutting edge wear has been revealed. The alloy with the optimal properties and high level of impact strength in high hardness and firmness
preserving is revealed.
After introduction of the knives made of steel with a new
chemical composition their work has been analyzed. The results
obtained of 40-50% firmness increasing at 4% cost supplement
allow to keep existing markets with the prospect of entering the
.,
.,
.
foreign markets.
Keywords: scrap metal processing, steel grades, firmness of knives,
optimal metal chemical composition, experimental alloys.
References
1.
Zavarikin E.S. Jekspluatacija lomopererabatyvajushhego oborudovanija
[Operation of the scrap metal processing of equipment]. The Market of
secondary metals (MS ). 2004, no. 2, pp. 20-22.
Eremin A.I. Press-nozhnicy: kak sdelat' pravil'nyj vybor [Press scissors:
how to make a correct choice].
, 2004, no. 1. pp. 8-41.
Emeljushin A.N., Pavlova N.G., Nikitin S.V. Razrabotka i osvoenie novoj
universal'noj marki stali dlja nozhej OAO «MMK» [Working out and development of new universal mark of steel for «
» OJCS knives]. Processes of abrasive processing, abrasive tools and materials: Intern. Collection
of Scient.Articls. 2010, pp. 56-59.
Emeljushin
., Nikitin S.V., Kadoshnikov V.I, Molochkova O.S,
Valishina T.S., Kotok A.P., Berdnikov S.N. Nozh dlja rezki metalla [A knife
for sharp metal]. Patent RF, no. 2409695, 2011.
2.
3.
4.
621.95; 622.143
.,
.,
.,
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. 2013.
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,
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