CN104294022A - Preparation method of high-magnetic-strength thin-gauge non-oriented silicon steel - Google Patents
Preparation method of high-magnetic-strength thin-gauge non-oriented silicon steel Download PDFInfo
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- CN104294022A CN104294022A CN201410531655.1A CN201410531655A CN104294022A CN 104294022 A CN104294022 A CN 104294022A CN 201410531655 A CN201410531655 A CN 201410531655A CN 104294022 A CN104294022 A CN 104294022A
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Abstract
The invention belongs to the field of metal material processing and relates to high-magnetic-strength thin-gauge non-oriented silicon steel and a preparation method thereof. The preparation method of the high-magnetic-strength thin-gauge non-oriented silicon steel comprises the following steps: selecting a silicon steel ingot casting as a raw material, wherein the silicone steel ingot casting contains the following components (in percent by mass): 2.8-3.2% of Si, 0.025-0.045% of C, 0.05-0.35% of Mn, less than or equal to 0.008% of P, less than ore equal to 0.005% of N, less then or equal to 0.02% of S and balance of Fe and inevitable impurities, and volume percent of columnar crystals in the ingot casting is 50-100%; heating the silicon steel ingot casting to 1200-1350 DEG C, carrying out hot rolling, normalizing at the temperature of 1110-1150 DEG C, rolling until thickness is 0.12-0.2mm by adopting a two-stage cold-rolling method including intermediate annealing, then carrying out decarburizing annealing, and finally carrying out final annealing for 10-20 minutes at the temperature of 900-950 DEG C. The preparation method of the high-magnetic-strength thin-gauge non-oriented silicon steel has the advantages that a processing technology easier to implement is adopted and a thin-gauge non-oriented silicon steel product with magnetic strength B50 more than 1.73T is obtained.
Description
Technical field
The invention belongs to metal material processing field, relate to a kind of high magnetic strength Thin Specs non orientating silicon steel and preparation method.
Background technology
Along with the fast development of national economy, energy-saving and emission-reduction become a problem more and more merited attention, poor efficiency motor need replace by high efficiency motor.Non orientating silicon steel is widely used in motor and produces, and its lower magnetic strength in use produces higher copper loss by making motor, and copper loss accounts for the main body of loss.Therefore, the non orientating silicon steel product of high magnetic strength is the core realizing motor high efficiency.Meanwhile, along with the application of converter technique, Thin Specs non orientating silicon steel is an important researchdevelopment direction.Current existing Thin Specs non orientating silicon steel technology of preparing, inquiring publication number is CN101269384A " a kind of manufacture method of cold rolling non-orientation silicon steel thin belt ", CN102151695A " a kind of manufacture method of Cold-rolled non-oriented high-silicon steel thin strip ", CN1326009A " thin non-oriented silicon steel plates of the low iron loss of excellent machining performance and preparation method thereof ", CN102747291A " non-orientation silicon steel thin belt of a kind of high frequency low iron loss excellent magnetic and production method " and CN103882299A " a kind of high alumina Thin Specs electrical steel and production method thereof " etc., relate to the content of the aspects such as high silicon (Si>4.5%) and the control of smelting composition adjustment more, and utilize the silicon steel ingot casting containing about 3%Si as starting materials, composition was not done multi-control, the method of namely additionally not adding some element-specific is relatively less.The more important thing is, the magnetic strength of Thin Specs non orientating silicon steel product is usually lower on the market at present, as the B of 20JNEH1500 (JFE)
50the B of=1.66T, B20AT1500 (Baosteel)
50=1.64T, core loss value P1.5 are then respectively 2.55W/kg and 2.48W/kg (data come from " JFE electrical steel product handbook " and " Baosteel electrical steel product handbook ").Therefore, present stage Thin Specs non orientating silicon steel research should control iron loss while, be devoted to improve its magnetic strength.And for Thin Specs sample, except magnetic strength is mainly by except texture controlling, magnetic hysteresis loss accounts for the main body of iron loss, also namely texture significantly affects iron loss by affecting magnetic hysteresis loss equally.Therefore, texture controlling should be to realize the effective means that Thin Specs non orientating silicon steel product magnetic property optimizes comprehensively.
Summary of the invention
The object of this invention is to provide a kind of high magnetic strength Thin Specs non orientating silicon steel and preparation method, Thin Specs non orientating silicon steel Realization of Product is rolled and obviously promotes to horizontal two-way magnetic strength, soft magnetic performance, its technology controlling and process industrially more easily realizes.
The technical scheme realizing the object of the invention is:
Select a kind of ingot casting of silicon steel composition of this explained hereafter applicable as starting materials, its composition consists of (mass percent) 2.8 ~ 3.2%Si, 0.025 ~ 0.045%C, 0.05 ~ 0.35%Mn, P≤0.008%, N≤0.005%, S≤0.02%, surplus is Fe and inevitable impurity, and content and the selection principle of key element are as follows:
Si:2.8 ~ 3.2%, Si is most important alloying element in silicon steel, can improve the resistivity of iron, reduces iron loss.But higher silicone content can make silicon steel magnetic strength reduce, and processing characteristics reduces; The present invention is the magnetic strength of the non orientating silicon steel being improved about 3%Si by texture controlling method.
C:0.025 ~ 0.045%, in common non orientating silicon steel is produced, C can cause magnetic aging, usually needs to reduce below its content to 0.01%.But in the present invention, the control of existence to texture of C has important effect: on the one hand can fragmentation hot rolling microstructure, the disadvantageous effect of deformation α line (<110>//RD) crystal grain large after reducing hot rolling normalizing; The all right refinement recrystal grain of C on the other hand, easily there is bunch combinate form core and merging of growing up in η line (<001>//RD) crystal grain useful in Decarburized structure, tiny primary recrystallization matrix can be grown up with size advantage.Meanwhile, industrial decarburization cost is lower, too much can not increase process costs.
Mn:0.05 ~ 0.35%, Mn can increase resistivity, improves hot-rolled sheet tissue, is combined forms the harm that MnS reduces S with S.
Other element: P≤0.008%, N≤0.005%, S≤0.02%, S, N will increase product iron loss, and P then will cause embrittlement, all belong to unfavorable element.Wherein, S and Mn forms MnS particle, makes its alligatoring to reduce the effect of its inhibiting grain growth by normalizing process, therefore contains quantitative limitation without the need to too strict to it.
The preparation method of high magnetic strength Thin Specs non orientating silicon steel of the present invention is:
(1) hot rolling: by ingot casting after 1200 ~ 1350 DEG C of insulation 20 ~ 30min, be hot-rolled down to 1.4 ~ 2mm;
(2) normalizing: by above-mentioned hot rolled silicon steel plates at pure N
2carry out normalizing process under atmosphere, normalizing temperature is 1110 ~ 1150 DEG C, normalizing time 2 ~ 5min;
(3) twice cold rolling and process annealing: after iron scale is removed in the pickling of silicon steel normalizing plate, are cold-rolled to 0.12 ~ 0.2mm through twice cold-rolling practice containing process annealing.Wherein, once cold rolling draft is 73 ~ 80%, and secondary cold-rolling draft is 55 ~ 60%, and at pure N
2under atmosphere, 840 ~ 860 DEG C of insulation 3 ~ 6min carry out process annealing process;
(4) decarburizing annealing: the decarburizing annealing process silicon steel sheet after cold rolling being carried out 3 ~ 8min at 840 ~ 860 DEG C, protective atmosphere is 20 ~ 30%H
2+ 80 ~ 70%N
2mixed atmosphere, bath temperature is 60 ~ 65 DEG C;
(5) final annealing: by the silicon steel sheet after decarburizing annealing at pure H
2under atmosphere, 900 ~ 950 DEG C of final annealings carrying out 10 ~ 20min.
Containing volume percent in above-mentioned silicon steel ingot casting initial structure is the column crystal of 50 ~ 100%, and therefore in original material, { 100} plane texture is stronger.After following process process, { 100} texture can partly retain, and promotes useful to product magnetic strength.
Above-mentioned silicon steel ingot casting first carries out hot rolling after 1200 ~ 1350 DEG C of insulation 20 ~ 30min, obtains the hot-rolled sheet of 1.4 ~ 2mm thickness.In order to ensure that finishing temperature can not be too low, to avoid the defects such as surface quality difference as far as possible, if it is too fast to lower the temperature in course of hot rolling, hot-rolled sheet can be increased by 1100 ~ 1200 DEG C in pony-roughing pass and melting down isothermal holding.
Need to carry out normalizing process after above-mentioned silicon steel slab hot-rolling, on the one hand can homogenizing tissue make grain-size increase to suppress follow-up cold rolled annealed { 111} plane texture afterwards; On the other hand, because strict to the restriction of the content of starting materials impurity element S, the existence of MnS inhibitor particle in material, may be there is, and normalizing insulation makes MnS size of particles increase, reduce its restraining effect thus reduce its impact on iron loss.Air cooling or shrend after normalizing annealing insulation.
When above-mentioned high magnetic strength Thin Specs non orientating silicon steel is cold rolling, adopts the secondary cold-rolling method containing process annealing except being beneficial to control template, being also beneficial to control texture.Under a higher pressure rate (73 ~ 80%) cold rolling after, during process annealing, more easily shear zone forming core is occurred to the favourable η line of magnetic strength ({ hk0}<001>) crystal grain.And after medium (55 ~ 60%) secondary cold-rolling, the preferential forming core of η line crystal grain is grown up during decarburizing annealing subsequently, and keep in the follow-up final annealing stage advantage of growing up.According to once rolling method, at the draft being greater than 90% cold rolling and annealing after be difficult to obtain strong η line texture, be unfavorable for that magnetic strength significantly promotes.
Above-mentioned high magnetic strength Thin Specs non orientating silicon steel carbonization treatment temperature is 840 ~ 860 DEG C, and duration 3 ~ 8min, atmosphere is 20 ~ 30%H
2+ 80 ~ 70%N
2mixed atmosphere, bath temperature is 60 ~ 65 DEG C.After long period decarburizing annealing, the disadvantageous effect of C can basically eliminate.
The invention has the beneficial effects as follows:
1. the present invention make Thin Specs non orientating silicon steel product roll to horizontal two-way magnetic strength B
50average reaches more than 1.73T, and on this thickness market, the magnetic strength value of other products, lower than 1.7T, achieves obvious magnetic strength and promotes.Meanwhile, product iron loss of the present invention reaches like product similar level on market, and two-way iron loss P1.5 average is lower than 2.7W/kg.
2. the present invention is by optimizing the control realization texture of technique, thus realizes the lifting of Thin Specs non orientating silicon steel soft magnetic performance.Comprise: obtain stronger η line texture, significantly promote and roll to magnetic strength; { part of 100} plane texture retains, and promotes magnetic strength and makes up different directions magnetic strength gap to utilize column crystal; Suppress magnetic strength disadvantageous γ line texture.
3. the present invention realizes product magnetic property by technology controlling and process to promote instead of alloying, wider to the limited range of starting materials composition.The detrimental action of C can be removed by decarburizing annealing, and inhibitor MnS particle that may exist etc. effectively reduce restraining effect in the generation alligatoring of normalizing process.Meanwhile, the production technique that the present invention relates to is not high to equipment requirements, and technique versatility is stronger.Although need increase decarburizing annealing technique, industrially more easily to realize, cost increases limited.
Embodiment
Embodiment 1:
Silicon steel ingot casting main component is adopted to be Si:2.8%, C:0.025%, Mn:0.05%, P:0.005%, S:0.01%, N:
0.005%, in ingot casting, styloid amasss per-cent is 50%.
(1) hot rolling: ingot casting is hot-rolled down to 1.8mm after 1200 DEG C of insulation 30min;
(2) normalizing: by above-mentioned hot rolled silicon steel plates at pure N
2carry out normalizing process under atmosphere, normalizing temperature is 1150 DEG C, normalizing time 2min, air cooling;
(3) twice cold rolling and process annealing: the silicon steel normalizing plate after pickling is cold-rolled to 0.18mm, and two sections of cold rolling drafts are respectively 78% and 55%, and carry out process annealing process at 840 DEG C of insulation 6min;
(4) decarburizing annealing: by 0.18mm silicon steel cold-reduced sheet at 860 DEG C, 20%H
2+ 80%N
2carbonization treatment is carried out, bath temperature 60 DEG C, decarburization time 3min under mixed atmosphere;
(5) final annealing: the silicon steel sheet after decarburizing annealing is at pure H
2under atmosphere, 900 DEG C are carried out 15min final annealing and obtain Thin Specs non orientating silicon steel.
Embodiment 2:
Silicon steel ingot casting main component is adopted to be Si:3%, C:0.038%, Mn:0.25%, P:0.006%, S:0.012%, N:
0.0035%, in ingot casting, styloid amasss per-cent is 75%.
(1) hot rolling: ingot casting is hot-rolled down to 1.5mm after 1250 DEG C of insulation 25min;
(2) normalizing: by above-mentioned hot rolled silicon steel plates at pure N
2carry out normalizing process under atmosphere, normalizing temperature is 1110 DEG C, normalizing time 3min, air cooling;
(3) twice cold rolling and process annealing: the silicon steel normalizing plate after pickling is cold-rolled to 0.16mm, and two sections of cold rolling drafts are respectively 73% and 60%, and carry out process annealing process at 860 DEG C of insulation 3min;
(4) decarburizing annealing: by 0.16mm silicon steel cold-reduced sheet at 840 DEG C, 25%H
2+ 75%N
2carbonization treatment is carried out, bath temperature 62 DEG C, decarburization time 5min under mixed atmosphere;
(5) final annealing: the siliconized plate after decarburizing annealing is at pure H
2under atmosphere, carry out 10min final annealing at 925 DEG C and obtain Thin Specs non orientating silicon steel.
Embodiment 3:
Adopt silicon steel ingot casting main component to be Si:3.05%, C:0.045%, Mn:0.1%, P:0.008%, S:0.015%, N:0.0044%, in ingot casting, styloid amasss per-cent is 100%.
(1) hot rolling: ingot casting is hot-rolled down to 2mm after 1320 DEG C of insulation 30min, wherein melts down insulation 10min by it at 1200 DEG C after 3 passages;
(2) normalizing: by above-mentioned hot rolled silicon steel plates at pure N
2carry out normalizing process under atmosphere, normalizing temperature is 1120 DEG C, normalizing time 5min, boiling water of quenching;
(3) twice cold rolling and process annealing: the silicon steel normalizing plate after pickling is cold-rolled to 0.2mm, and two sections of cold rolling drafts are respectively 75% and 60%, and carry out process annealing process at 850 DEG C of insulation 5min;
(4) decarburizing annealing: by 0.2mm silicon steel cold-reduced sheet at 850 DEG C, 30%H
2+ 70%N
2carbonization treatment is carried out, bath temperature 60 DEG C, decarburization time 8min under mixed atmosphere;
(5) final annealing: the silicon steel sheet after decarburizing annealing is at pure H
2under atmosphere, 950 DEG C are carried out 20min final annealing and obtain Thin Specs non orientating silicon steel.
Embodiment 4:
Silicon steel ingot casting main component is adopted to be Si:3.2%, C:0.035%, Mn:0.35%, P:0.005%, S:0.02%, N:
0.003%, in ingot casting, styloid amasss per-cent is 90%.
(1) hot rolling: ingot casting is hot-rolled down to 1.4mm after 1350 DEG C of insulation 20min, wherein melts down insulation 10min by it at 1100 DEG C after 3 passages;
(2) normalizing: by above-mentioned hot rolled silicon steel plates at pure N
2carry out normalizing process under atmosphere, normalizing temperature is 1140 DEG C, normalizing time 4min, boiling water of quenching;
(3) twice cold rolling and process annealing: the silicon steel normalizing plate after pickling is cold-rolled to 0.12mm, and two sections of cold rolling drafts are respectively 80% and 57%, and carry out process annealing process at 850 DEG C of insulation 5min;
(4) decarburizing annealing: by 0.12mm silicon steel cold-reduced sheet at 847 DEG C, 30%H
2+ 70%N
2carbonization treatment is carried out, bath temperature 65 DEG C, decarburization time 6min under mixed atmosphere;
(5) final annealing: the silicon steel sheet after decarburizing annealing is at pure H
2under atmosphere, 950 DEG C are carried out 17min final annealing and obtain Thin Specs non orientating silicon steel.
Product performance: (roll to the B with transverse direction with edge
50and P
1.
5average is weighed)
| ? | B 50(T) | P 1.5(W/Kg) |
| Embodiment 1 | 1.748 | 2.638 |
| Embodiment 2 | 1.755 | 2.589 |
| Embodiment 3 | 1.764 | 2.45 |
| Embodiment 4 | 1.742 | 2.489 |
Claims (1)
1. the preparation method of one kind high magnetic strength Thin Specs non orientating silicon steel, it is characterized in that adopting mass percent is 2.8 ~ 3.2%Si, 0.025 ~ 0.045%C, 0.05 ~ 0.35%Mn, P≤0.008%, N≤0.005%, S≤0.02%, surplus are Fe and the silicon steel ingot casting of inevitable impurity as starting materials, wherein in ingot casting, styloid amasss per-cent is 50 ~ 100%, is prepared by following processing step and technical parameter:
(1) hot rolling: by ingot casting after 1200 ~ 1350 DEG C of insulation 20 ~ 30min, be hot-rolled down to 1.4 ~ 2mm;
(2) normalizing: by above-mentioned hot rolled silicon steel plates at pure N
2carry out normalizing process under atmosphere, normalizing temperature is 1110 ~ 1150 DEG C, normalizing time 2 ~ 5min;
(3) twice cold rolling and process annealing: after iron scale is removed in the pickling of silicon steel normalizing plate, are cold-rolled to 0.12 ~ 0.2mm through twice cold-rolling practice containing process annealing;
Wherein, once cold rolling draft is 73 ~ 80%, and secondary cold-rolling draft is 55 ~ 60%, and at pure N
2under atmosphere, 840 ~ 860 DEG C of insulation 3 ~ 6min carry out process annealing process;
(4) decarburizing annealing: the decarburizing annealing process silicon steel sheet after cold rolling being carried out 3 ~ 8min at 840 ~ 860 DEG C, protective atmosphere is 20 ~ 30%H
2+ 80 ~ 70%N
2mixed atmosphere, bath temperature is 60 ~ 65 DEG C;
(5) final annealing: by the silicon steel sheet after decarburizing annealing at pure H
2under atmosphere, 900 ~ 950 DEG C of final annealings carrying out 10 ~ 20min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130169A (en) * | 2017-04-20 | 2017-09-05 | 北京科技大学 | A kind of high intensity cupric cold rolling non-orientation silicon steel and manufacture method |
| CN107138525A (en) * | 2017-05-02 | 2017-09-08 | 内蒙古包钢钢联股份有限公司 | The method that think gauge silicon steel raw material is rolled into standard thickness cold-rolled products |
| CN108010653A (en) * | 2017-12-27 | 2018-05-08 | 宁波耀峰液压电器有限公司 | A kind of DC wet type electromagnet for valve |
| CN109082605A (en) * | 2018-10-09 | 2018-12-25 | 鞍钢股份有限公司 | A kind of production method of high frequency strip silicon steel |
| CN109161672A (en) * | 2018-10-09 | 2019-01-08 | 鞍钢股份有限公司 | A kind of manufacturing method of high frequency strip silicon steel |
| CN114606435A (en) * | 2022-02-09 | 2022-06-10 | 山西太钢不锈钢股份有限公司 | High-efficiency high-strength non-oriented silicon steel thin strip for automobile driving motor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03197621A (en) * | 1989-12-26 | 1991-08-29 | Nkk Corp | Production of non-oriented electrical sheet having excellent magnetic characteristic and surface characteristic |
| CN102041367A (en) * | 2009-10-23 | 2011-05-04 | 宝山钢铁股份有限公司 | Manufacturing method of thin strip continuously cast and cold rolled non-oriented electrical steel |
| CN102069165A (en) * | 2010-11-11 | 2011-05-25 | 东北大学 | Method for preparing non-oriented silicon steel columnar crystal thin strip blank by twin-roll thin strip continuous casting |
| JP2011132558A (en) * | 2009-12-22 | 2011-07-07 | Jfe Steel Corp | Method for manufacturing non-oriented electromagnetic steel sheet |
| CN102134675A (en) * | 2011-02-22 | 2011-07-27 | 武汉钢铁(集团)公司 | Non-oriented electrical steel for thin slab continuous casting-continuous rolling production and method thereof |
| CN102367547A (en) * | 2011-10-31 | 2012-03-07 | 山西太钢不锈钢股份有限公司 | Manufacture method of high-silicon aluminum content non-oriented silicon steel strip |
| CN102418034A (en) * | 2011-12-14 | 2012-04-18 | 武汉钢铁(集团)公司 | Production method for high-grade non-oriented silicon steel |
| CN102634729A (en) * | 2012-04-01 | 2012-08-15 | 首钢总公司 | Preparation method for low-iron-loss, high-induction and high-mark non-oriented silicon steel |
-
2014
- 2014-10-10 CN CN201410531655.1A patent/CN104294022A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03197621A (en) * | 1989-12-26 | 1991-08-29 | Nkk Corp | Production of non-oriented electrical sheet having excellent magnetic characteristic and surface characteristic |
| CN102041367A (en) * | 2009-10-23 | 2011-05-04 | 宝山钢铁股份有限公司 | Manufacturing method of thin strip continuously cast and cold rolled non-oriented electrical steel |
| JP2011132558A (en) * | 2009-12-22 | 2011-07-07 | Jfe Steel Corp | Method for manufacturing non-oriented electromagnetic steel sheet |
| CN102069165A (en) * | 2010-11-11 | 2011-05-25 | 东北大学 | Method for preparing non-oriented silicon steel columnar crystal thin strip blank by twin-roll thin strip continuous casting |
| CN102134675A (en) * | 2011-02-22 | 2011-07-27 | 武汉钢铁(集团)公司 | Non-oriented electrical steel for thin slab continuous casting-continuous rolling production and method thereof |
| CN102367547A (en) * | 2011-10-31 | 2012-03-07 | 山西太钢不锈钢股份有限公司 | Manufacture method of high-silicon aluminum content non-oriented silicon steel strip |
| CN102418034A (en) * | 2011-12-14 | 2012-04-18 | 武汉钢铁(集团)公司 | Production method for high-grade non-oriented silicon steel |
| CN102634729A (en) * | 2012-04-01 | 2012-08-15 | 首钢总公司 | Preparation method for low-iron-loss, high-induction and high-mark non-oriented silicon steel |
Non-Patent Citations (3)
| Title |
|---|
| LING CHENG 等: "Preparation of non-oriented silicon steel with high magnetic induction using columnar grains", 《JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS》 * |
| 丁磊 等: "柱状晶尺寸对制备高磁感无取向硅钢的影响", 《2012年第十二届中国电工钢学术年会论文集》, 26 March 2013 (2013-03-26) * |
| 毛卫民 等: "《电工钢的材料学原理》", 31 August 2013, article "电工钢的材料学原理" * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130169A (en) * | 2017-04-20 | 2017-09-05 | 北京科技大学 | A kind of high intensity cupric cold rolling non-orientation silicon steel and manufacture method |
| CN107130169B (en) * | 2017-04-20 | 2018-05-18 | 北京科技大学 | A kind of high intensity cupric cold rolling non-orientation silicon steel and manufacturing method |
| CN107138525A (en) * | 2017-05-02 | 2017-09-08 | 内蒙古包钢钢联股份有限公司 | The method that think gauge silicon steel raw material is rolled into standard thickness cold-rolled products |
| CN108010653A (en) * | 2017-12-27 | 2018-05-08 | 宁波耀峰液压电器有限公司 | A kind of DC wet type electromagnet for valve |
| CN109082605A (en) * | 2018-10-09 | 2018-12-25 | 鞍钢股份有限公司 | A kind of production method of high frequency strip silicon steel |
| CN109161672A (en) * | 2018-10-09 | 2019-01-08 | 鞍钢股份有限公司 | A kind of manufacturing method of high frequency strip silicon steel |
| CN114606435A (en) * | 2022-02-09 | 2022-06-10 | 山西太钢不锈钢股份有限公司 | High-efficiency high-strength non-oriented silicon steel thin strip for automobile driving motor |
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