CN101139681B - High grade cold rolling non-oriented silicon steel and method for manufacturing same - Google Patents

High grade cold rolling non-oriented silicon steel and method for manufacturing same Download PDF

Info

Publication number
CN101139681B
CN101139681B CN200710139635XA CN200710139635A CN101139681B CN 101139681 B CN101139681 B CN 101139681B CN 200710139635X A CN200710139635X A CN 200710139635XA CN 200710139635 A CN200710139635 A CN 200710139635A CN 101139681 B CN101139681 B CN 101139681B
Authority
CN
China
Prior art keywords
rolling
per cent
hot
annealing
silicon steel
Prior art date
Application number
CN200710139635XA
Other languages
Chinese (zh)
Other versions
CN101139681A (en
Inventor
姜世勇
王一德
李慧峰
王立新
崔天燮
辛宪诚
王荃
赵建伟
Original Assignee
山西太钢不锈钢股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 山西太钢不锈钢股份有限公司 filed Critical 山西太钢不锈钢股份有限公司
Priority to CN200710139635XA priority Critical patent/CN101139681B/en
Publication of CN101139681A publication Critical patent/CN101139681A/en
Application granted granted Critical
Publication of CN101139681B publication Critical patent/CN101139681B/en

Links

Abstract

The invention provides a middle and high grade cold rolled no-orientation silicon steel and its manufacturing method. The components of the no-orientation silicon steel are that: C of 0.0015 per cent to 0.005 per cent Si of 1.60 per cent to 3.30 per cent Mn of 0.50 to 2.50 per cent P of no more than 0.050 per cent S of 0.0010 per cent to 0.0050 per cent Al of 0.15 per cent to 0.50% N of 0.0010 per cent to 0.0050 per cent, small amount of Sn, Sb, Cu can be added, total mount is less than 0.20 per cent, the remainder are Fe and unavoidable foreign matters and Mn per cent is equal to k multiplied by |Si plus 2Al-2.05|per cent plus 0.28 per cent, wherein, k is equal to 1.0 to 3.0. The manufacturing method is that: hot rolling, pickling, cold rolling and annealing the cast blanks of the components. The heating temperature for the cast blanks at hot rolling is 1050 to 1200 DEG C, the rolling passes are 3 to 5 no.s, the pressure-down rate is 20 to 40 per cent for each pass; the temperature for fine and final rolling temperature is 800 to 900 DEG C, coiling temperature is 600 to 680 DEG C, and the annealing is done in a dry protective atmosphere. The method has low process difficult, low cost and high product surface quality.

Description

In high grade cold rolling non-oriented silicon steel and manufacture method thereof
Technical field
The present invention relates to a kind of in high grade cold rolling non-oriented silicon steel and manufacture method thereof, specifically relate to a kind of Si content high grade cold rolling non-oriented silicon steel in 1.6% above hot rolled, relate to the manufacture method of this silicon steel simultaneously.
Background technology
(Si+Al) %〉1.7% and the silicon steel of C≤0.01% solidify and course of hot rolling in do not have phase transformation, in the strand in thick (100) column crystal course of hot rolling because the slowly and thoroughly fragmentation of dynamic recovery and recrystallize, near the hot-rolled sheet thickness of slab center is the deformation crystal grain of thick elongation, be mainly the deformation energy storage extremely low 100}<011〉fiber texture, be difficult to take place recrystallize during later on cold rolling and annealing, thereby form the corrugated defective on the production board surface.This not only influences the visual appearance of product, also can have a negative impact to punching closed assembly performance.The method of eliminating this defective has following several:
(1) casting process adopts induction stirring (special public imperial edict 53-114609 communique) and low temperature teeming practice (special public imperial edict 49-39526 communique), improves equiaxed zone ratio in the strand, to eliminate finished surface corrugated defective.Production practice show, the medium axial ratio ratio of strand<60% o'clock only rely on this method to be difficult to thoroughly eliminate the corrugated defective, and casting process is wayward, and inclusion is difficult for come-up in the crystallizer, and The amount of inclusions increases in the continuously cast bloom, influences the performance of the finished product.
(2) hot-rolled sheet normalizing method is one of effective ways that prevent the corrugated defective, but facility investment is big, complex procedures, and production cost obviously increases.
(3) hot-rolled sheet high temperature batches the self-annealing method, hot-rolled sheet high temperature batches the Heating temperature of self-annealing need improve hot rolling the time, the easy like this continuously cast bloom waist that collapses that causes, can cause the solid solution once more of sulfide in the steel, nitride in addition, being the disperse shape in course of hot rolling subsequently separates out, hinder the finished products grain growth, magnetic property is worsened.High temperature batches back hot-rolled sheet iron scale densification, causes the pickling difficulty.
(4) course of hot rolling adopts high-frequency induction heating apparatus (spy opens flat 2000-63949), and to the heating of steel plate limit rolled edge, what promote the course of hot rolling recrystallize eliminates the corrugated defective.This method is had relatively high expectations to device control, and the actual production operation easier is big, the also corresponding increase of manufacturing cost.
(5) production method of Baosteel cold rolling non-oriented electrical steel technical patent number 200310108197.2 cold rolling non-oriented electrical steels.This technology mainly realizes not having the production of corrugated defective non-oriented electrical steel by device, method, its weak point is having relatively high expectations to production unit, be only applicable to that slab thickness is less, the short-flow production line of continuous casting and the configuration of tandem rolling compact, be difficult to prove effective for traditional continuous casting-hot rolling production model, the technology versatility is relatively poor.In addition, this technology can not be exempted cold rolling preceding hot rolling band annealing or secondary cold-rolling technology fully, thereby the production efficiency of greatly reducing has increased manufacturing cost.The non-oriented electromagnetic steel sheet and the manufacture method thereof of the patent No. 03116890.6 no corrugated defective, though this method can save hot-rolled sheet normalizing operation, but have following deficiency: 1) C content is higher in the steel, later on need carry out carbonization treatment during finished products, this has not only reduced the operational efficiency of unit, and easily produce internal oxidation layer and interior nitride layer in the annealing process, magnetic property is worsened; 2) the hot-rolled process hot rolled coil needs to batch at high temperature more than 700 ℃, causes the densification of hot rolled coil scale on surface, the burden when having increased pickling; 3) higher to the controlling of production process accuracy requirement, influence rhythm of production and efficient.Application number 200510027313.7 non-oriented electrical steels and manufacture method thereof, this method weak point is identical substantially with the patent No. 03116890.6, and only is applicable to the production of the cold rolling non-oriented electrical steel of Si content lower (<1.30%).
Summary of the invention
For overcome existing in the above-mentioned deficiency of high grade cold rolling non-oriented silicon steel manufacture method, the invention provides the few Si of a kind of surperficial corrugated defective〉1.6% in high grade cold rolling non-oriented silicon steel and manufacture method thereof, with high grade cold rolling non-oriented silicon steel in present method manufacturing, technology difficulty is little, production cost is low, and highly〉the corrugated defective incidence of 2 μ m is less than 1%.
Key problem in technology of the present invention is the C content that as far as possible reduces in the steel, with Mn as main phase transformation generation element, by Si, Al, the main alloying constituent of Mn in the steel are carried out rational proportion and are aided with suitable hot rolling production technique, impel in the course of hot rolling and undergo phase transition, utilize phase transition process to promote the generation of course of hot rolling dynamic recovery and recrystallize, increase the ratio (being not less than 80%) of recrystallize in the hot-rolled sheet, thereby reach the effect of thorough elimination finished surface corrugated defective.
Component (weight percent) of high grade non-oriented silicon steel is in this:
C:0.0015%~0.005% Si:1.60%~3.30% Mn:0.50%~2.50%
P≤0.050% S:0.0010%~0.0050% Al:0.15%~0.50%
N:0.0010%~0.0050% can add a small amount of Sn, Sb, Cu, its total amount<0.20%
Surplus is Fe and inevitably is mingled with.
And Mn%=k * | Si+2Al-2.05|%+0.28%
Wherein: k=1.0~3.0
These method and technology main points:
(1) chemical composition design
C, Si, Al, Mn are the most significant factor of phase transformation that influences in the silicon steel, by these elements are carried out rational proportion, can guarantee the generation of phase transformation in the steel.
C:0.0015%~0.005%, increase the carbon content in the steel, though can promote the generation of phase transition process, but increasing, carbon content can hinder the finished product grain growth strongly, cause that iron loss increases and magnetic aging, and bring difficulty for back operation decarburization, the advantages outweigh the disadvantages to add the C effect, so carbon content is low more good more in the steel, preferable range is controlled at below 0.003%.
Si:1.60~3.30%, silicon for obtaining good electromagnetic performance, requires Si content more than 1.60% for the effective element of the resistivity that improves iron, and Si<3.30% can obtain good cold-forming property.
Al:0.15~0.50%, the effect and the silicon of aluminium are close, improve resistivity, dwindle γ phase region promotion grain coarsening, reduce iron loss.Al content was less than 0.15% o'clock product electromagnetic performance instability, and it is difficult greater than 0.50% o'clock smelting to be poured into a mould, and manufacturing cost obviously increases.
Mn:0.50~2.50%, manganese according to Si, Al content in the steel, is rationally regulated the ratio of Mn in the steel for enlarging the element of γ phase region, makes Mn content satisfy formula (1), can guarantee the generation of phase transition process.
Mn%=k×|Si+2Al-2.05|%+0.28% (1)
Wherein: the size of k=1.0~3.0k is selected according to (Si+2Al) %.
P:<0.050%, in steel, add the processing characteristics that certain P can improve steel plate, but unfavorable above 0.050% o'clock to magnetic property.
S:0.0010%~0.0050%, sulphur are uneven distribution in steel, harmful to hot workability and magnetic property, require to be controlled at below 0.005%, and S content is lower than at 0.0010% o'clock and further takes off the S very difficulty that becomes, and cost obviously increases.
N:0.0010%~0.0050%, nitrogen is harmful element, very easily form AlN small and dispersed nitride in the finished products process, hinder the finished product recrystal grain deterioration magnetic of growing up, the nitrogen height also can cause magnetic aging, requirement is controlled at below 0.005%, and N content is lower than 0.0010% can increase the control difficulty, and manufacturing cost obviously increases.
Can add a spot of Sn, Sb, Cu,, improve magnetic strength, but total content should not surpass 0.20%, otherwise the meeting crystal grain thinning worsens magnetic property to improve the texture of production board.
(2) hot rolling technology control
The present invention is to production technique, Equipment Requirement is not high, use traditional continuous casting-hot rolling mode of production to produce the producer of cold rolling non-orientation silicon steel for the overwhelming majority, do not need to carry out scrap build, utilize the existing weaponry and equipment condition, adopt conventional hot rolling production technique both can realize, slab heating temperature is at 1050~1200 ℃, slab thickness 35~50mm after the roughing, roughing need not to depress greatly rolling, rolling pass is looked mill capacity between 3~5 passages, percentage pass reduction is 20~40%, the finish rolling finishing temperature is at 800~900 ℃, coiling temperature is at 600~680 ℃, do not need to carry out high-temperature final rolling and high temperature batches (more than 700 ℃), can guarantee that the recrystallized structure ratio reaches more than 80% in the hot-rolled sheet.
(3) cold rolling and annealing process
Hot-rolled sheet thickness 2.0~3.0mm need not carry out normalizing thermal treatment before cold rolling, is cold rolled to 0.5mm with once-through method after pickling, adopts the dry gas atmosphere during finished product continuous annealing, need not carry out the humidification carbonization treatment.
High grade cold rolling non-oriented silicon steel manufacture method comprises following sequential steps in this:
The I smelting molten steel
Smelt the molten steel of following compositions (weight percent) through hot metal pretreatment, converter smelting and RH vacuum-treat:
C:0.0015%~0.005% Si:1.60%~3.30% Mn:0.50%~2.50%
P≤0.050% S:0.0010%~0.0050% Al:0.15%~0.50%
N:0.0010%~0.0050% can add a small amount of Sn, Sb, Cu, its total amount<0.20%
Surplus is Fe and inevitably is mingled with.
Wherein, Mn content satisfy k * | Si+2Al-2.05|%+0.28%
The II sheet billet continuous casting
Becoming thickness with the casting speed continuous casting of 0.6~1.0m/min is the strand of 200mm~230mm;
III hot rolling, pickling
Slab heating temperature is 1050~1200 ℃, slab thickness 35~50mm after the roughing, and it is 3~5 passages that rolling pass is looked mill capacity, and every time draft is 20~40%, and the finish rolling finishing temperature is at 800~900 ℃, and coiling temperature is at 600~680 ℃, pickling afterwards;
IV is cold rolling
Be cold rolled to once-through method after the pickling and roll finished product thickness, be generally 0.5mm.
V annealing
Because C content is less than 0.005%, annealing is at dried (dew point is lower than 0 ℃) 20%H 2+ 80%N 2Carry out in the protective atmosphere, need not carry out the humidification carbonization treatment, steel belt operating speed is fast, and is not easy to produce interior oxidation, has improved magnetic property.
High grade cold rolling non-oriented silicon steel manufacture method also can be with the strand of following compositions (weight percent) in this:
C:0.0015%~0.005% Si:1.60%~3.30% Mn:0.50~2.50% P≤0.050%
S:0.0010%~0.0050% Al:0.15%~0.50% N:0.0010%~0.0050%
Can add a small amount of Sn, SbCu, its total amount<0.20%
Surplus is Fe and inevitably is mingled with
Wherein, Mn content satisfy k * | Si+2Al-2.05|%+0.28%:
From above-mentioned hot rolling, pickling, cold rolling then, annealing is made.
High grade cold rolling non-oriented silicon steel and manufacture method thereof have following advantage in of the present invention:
1. the present invention is applicable to the production of Si content at the middle high grade non-oriented silicon steel more than 1.6%, and the product electromagnetic performance is good, the no corrugated defective in surface.
2. the production method of high grade cold rolling non-oriented silicon steel is simple in of the present invention, less demanding to equipment and process aspect, tradition continuous casting-hot rolling production model can realize that can be widely used in the cold rolling non-orientation silicon steel manufacturer of different equipments, the technology versatility is stronger.
3. characteristics of the present invention are main alloy element content in the rational allocation steel, utilize the character-phase transformation of steel grade itself to reach the purpose of eliminating surperficial corrugated defective, overcome the deficiency of conventional art, manufacturing approach craft of the present invention is simple, production efficiency is high, low cost of manufacture.
Description of drawings
Fig. 1 Comparative Examples hot-rolled sheet metallographic structure situation.
Fig. 2 embodiment one hot-rolled sheet metallographic structure situation.
Fig. 3 is a Comparative Examples finished surface quality condition.
Fig. 4 is the embodiment of the invention one a surface quality situation.
Embodiment
Below in conjunction with embodiment the specific embodiment of the present invention is described in further detail, but the specific embodiment of the present invention is not limited to following embodiment.
Embodiment one
Converter, the RH vacuum-treat obtains C:0.0028%, Si:1.65%, Mn:0.95%, Al:0.28%, P:0.015%, S:0.0035%, N:0.0035%, all the other are the molten steel of Fe, and becoming thickness with the casting speed continuous casting of 0.9m/min is the strand of 200mm, and strand is rolling through 1120 ℃ of soaking, roughing adopts 5 passages rolling, through 20% → 25% → 28% → 32% → 27% draft/passage, the finish rolling finishing temperature is 820 ℃, 620 ℃ of coiling temperatures, hot-rolled sheet thickness 2.0mm, be cold rolled to finished product thickness 0.5mm with once-through method after the pickling, cold-rolled steel strip carries out finished product recrystallization annealing annealing atmosphere and adopts the dry gas atmosphere, need not carry out the humidification carbonization treatment.Do not have in the finished product steel plate to occur 2 μ m corrugated defective highly, magnetic is P 15/50=3.46W/kg, B 50=1.703T.
Present embodiment make in the composition (weight percent) of high grade cold rolling non-oriented silicon steel be:
C:0.0028%,Si:1.65%,Mn:0.95%,Al:0.28%,P:0.015%,S:0.0035%,
N:0.0035%, all the other are the molten steel of Fe.
Embodiment two
Converter, the RH vacuum-treat obtains C:0.003%, Si:1.75%, Mn:1.20%, Al:0.38%, P:0.013%, S:0.0032%, N:0.0030%, all the other are the molten steel of Fe, becoming thickness with the casting speed continuous casting of 0.85m/min is the strand of 210mm, strand is rolling through 1130 ℃ of soaking, roughing adopts 5 passages rolling, and through 23% → 25% → 28% → 32% → 27% draft/passage, the finish rolling finishing temperature is 840 ℃, 630 ℃ of coiling temperatures, hot-rolled sheet thickness 2.4mm is cold rolled to finished product thickness 0.5mm with once-through method after the pickling, and cold-rolled steel strip carries out finished product recrystallization annealing, annealing atmosphere adopts the dry gas atmosphere, need not carry out the humidification carbonization treatment.Do not have in the production board to occur 2 μ m corrugated defective highly, magnetic is P15/50=3.24W/kg, B50=1.689T.
Present embodiment make in the composition (weight percent) of high grade cold rolling non-oriented silicon steel be:
C:0.003%,Si:1.75%,Mn:1.20%,Al:0.38%,P:0.013%,S:0.0032,
N:0.0030%, all the other are the molten steel of Fe.
Embodiment three
Converter, the RH vacuum-treat obtains C:0.003%, Si:1.75%, Mn:1.20%, Al:0.38%, P:0.013%, S:0.0032%, N:0.0030%, Sn:0.05%, Sb:0.08%, Cu:0.02%, all the other are the molten steel of Fe, becoming thickness with the casting speed continuous casting of 0.85m/min is the strand of 210mm, and strand is rolling through 1130 ℃ of soaking, and roughing adopts 5 passages rolling, through 23%, 25%, 28%, 32%, 27% draft/passage, the finish rolling finishing temperature is 843 ℃, 635 ℃ of coiling temperatures, hot-rolled sheet thickness 2.4mm, be cold rolled to finished product thickness 0.5mm with once-through method after the pickling, cold-rolled steel strip carries out finished product recrystallization annealing, and annealing atmosphere adopts the dry gas atmosphere, need not carry out the humidification carbonization treatment.Do not have in the production board to occur 2 μ m corrugated defective highly, magnetic is P15/50=3.26W/kg, B50=1.698T.
Present embodiment make in the composition (weight percent) of high grade cold rolling non-oriented silicon steel be:
C:0.003%,?Si:1.75%,Mn:1.20%,Al:0.38%,P:0.013%,S:0.0032,
N:0.0030%, Sn:0.05%, Sb:0.08%, Cu:0.02%, all the other are the molten steel of Fe.
Embodiment four
Converter, the RH vacuum-treat obtains C:0.0030%, Si:2.25%, Mn:1.52%, Al:0.33%, P:0.010%, S:0.0025%, N:0.0026%, all the other are the molten steel of Fe, becoming thickness with the casting speed continuous casting of 0.75m/min is the strand of 230mm, strand is rolling through 1180 ℃ of soaking, roughing adopts 5 passages rolling, and through 28% → 32% → 35% → 38% → 32% draft/passage, the finish rolling finishing temperature is 880 ℃, 680 ℃ of coiling temperatures, hot-rolled sheet thickness 3.0mm is cold rolled to finished product thickness 0.5mm with once-through method after the pickling, and cold-rolled steel strip carries out finished product recrystallization annealing, annealing atmosphere adopts the dry gas atmosphere, need not carry out the humidification carbonization treatment.Occur in the production board ratio of the corrugated defective of 2 μ m height is 0.31%, magnetic is P15/50=2.82W/kg, B50=1.673T.
Present embodiment make in the composition (weight percent) of high grade cold rolling non-oriented silicon steel be: C:0.0030%, Si:2.25%, Mn:1.52%, Al:0.33%, P:0.010%, S:0.0025%, N:0.0026%, all the other are the molten steel of Fe.
Four above-mentioned embodiment also can be successively from hot rolling, pickling, and cold rolling then, annealing is made.
Comparative Examples:
Converter, the RH vacuum-treat obtains C:0.0032%, Si:1.95%, Mn:0.26%, Al:0.32%, P:0.017%, S:0.0033, N:0.0030%, all the other are the molten steel of Fe, becoming thickness with the casting speed continuous casting of 0.8m/min is the strand of 230mm, strand is rolling through 1180 ℃ of soaking, roughing adopts 5 passages rolling, and through 28% → 32% → 35% → 38% → 32% draft/passage, the finish rolling finishing temperature is 878 ℃, 682 ℃ of coiling temperatures, hot-rolled sheet thickness 3.0mm is cold rolled to finished product thickness 0.5mm with once-through method after the pickling, and cold-rolled steel strip carries out finished product recrystallization annealing, annealing atmosphere adopts the dry gas atmosphere, need not carry out the humidification carbonization treatment.Occur in the production board ratio of the corrugated defective of 2 μ m height is 70%, magnetic is P15/50=3.40W/kg, B50=1.695T.
As can be seen from Figure 1, in Comparative Examples (no phase transformation) hot-rolled sheet only there be about 60% recrystallized structure, and finished surface corrugated defective is (Fig. 2) very obviously, and defective proportion is up to 70%.By adjusting main alloy element proportioning in the steel, impel in the course of hot rolling to undergo phase transition (embodiment one), the ratio of recrystallized structure obviously increases in the hot-rolled sheet, has reached more than 80%, thoroughly eliminated finished surface corrugated defective, highly〉the corrugated defective incidence of 2 μ m is zero.Can find out that from the contrast of Fig. 3 and Fig. 4 steel plate face visual appearance of the present invention is obviously good than Comparative Examples.

Claims (2)

1. high grade cold rolling non-oriented silicon steel in a kind, its component is weight percentage:
C:0.0015%~0.005% Si:1.60%~3.30% Mn:0.50~2.50%
P≤0.050% S:0.0010%~0.0050%?Al:0.15%~0.50%
N:0.0010%~0.0050% adds a small amount of Sn, Sb, Cu, its total amount<0.20%
Surplus is Fe and inevitably is mingled with
And Mn%=k * | Si+2Al-2.05|%+0.28% wherein: the size of k=1.0~3.0k is selected according to (Si+2Al) %;
It is successively from hot rolling, pickling with strand, direct then once cold rolling and finished products are made, slab heating temperature is 1050~1200 ℃ during hot rolling, slab thickness 35~50mm after the roughing, rolling pass is 3~5 passages, every time draft is 20~40%, and the finish rolling finishing temperature is at 800~900 ℃, and coiling temperature is at 600~680 ℃; Hot-rolled sheet does not carry out normalizing to be handled, and annealing is to be lower than 0 ℃ 20%H at the dew point of doing 2+ 80%N 2Protective atmosphere in carry out.
2. the manufacture method of high grade cold rolling non-oriented silicon steel in a kind, it is the strand of following compositions weight percent:
C:0.0015%~0.005% Si:1.60%~3.30% Mn:0.50~2.50% P≤0.050%
S:0.0010%~0.0050%?Al:0.15%~0.50% N:0.0010%~0.0050%
Add a small amount of Sn, Sb, Cu, 0≤its total amount<0.20%
Surplus is Fe and inevitably is mingled with
Wherein, Mn content satisfy k * | Si+2Al-2.05|%+0.28% wherein: the size of k=1.0~3.0k is selected according to (Si+2Al) %;
Successively from hot rolling, pickling, cold rolling then, annealing is made, slab heating temperature is 1050~1200 ℃ during hot rolling, slab thickness 35~50mm after the roughing, rolling pass is 3~5 passages, every time draft is 20~40%, and the finish rolling finishing temperature is at 800~900 ℃, and coiling temperature is at 600~680 ℃; Hot-rolled sheet does not carry out normalizing to be handled, and annealing is to be lower than 0 ℃ 20%H at the dew point of doing 2+ 80%N 2Protective atmosphere in carry out.
CN200710139635XA 2007-10-26 2007-10-26 High grade cold rolling non-oriented silicon steel and method for manufacturing same CN101139681B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200710139635XA CN101139681B (en) 2007-10-26 2007-10-26 High grade cold rolling non-oriented silicon steel and method for manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200710139635XA CN101139681B (en) 2007-10-26 2007-10-26 High grade cold rolling non-oriented silicon steel and method for manufacturing same

Publications (2)

Publication Number Publication Date
CN101139681A CN101139681A (en) 2008-03-12
CN101139681B true CN101139681B (en) 2010-07-21

Family

ID=39191786

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200710139635XA CN101139681B (en) 2007-10-26 2007-10-26 High grade cold rolling non-oriented silicon steel and method for manufacturing same

Country Status (1)

Country Link
CN (1) CN101139681B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101831589B (en) * 2009-05-15 2011-08-17 北京科技大学 Cold-rolled non-oriented silicon steel with high magnetic induction and low iron loss for high-efficiency motor and manufacture method thereof
CN101992210B (en) * 2009-08-25 2013-03-13 鞍钢股份有限公司 Method for producing aluminum-free steel grade of cold milling non-oriented silicon steel
CN102102141B (en) * 2009-12-22 2013-12-11 鞍钢股份有限公司 Hot rolling process for improving structural homogeneity of oriented silicon steel plate
CN101921956A (en) * 2010-06-23 2010-12-22 北京科技大学 High-magnetic induction, low-iron loss, low-carbon, low-silicon and non-oriented electrical steel and manufacturing method thereof
CN102443734B (en) 2010-09-30 2013-06-19 宝山钢铁股份有限公司 Non-oriented electrical steel plate without corrugated defect and its manufacturing method
CN103255274B (en) * 2012-08-10 2015-06-03 新万鑫(福建)精密薄板有限公司 Production method of general oriented silicon steel with twice cold rolling changed into one time cold rolling
CN102851577B (en) * 2012-08-28 2014-05-14 武汉钢铁(集团)公司 High grade non-oriented silicon steel produced by continuous casting and rolling of sheet billet and production method thereof
CN102912104A (en) * 2012-10-23 2013-02-06 鞍钢股份有限公司 Production method for improving isotropy of electromagnetic performance of medium and high-grade products of non-oriented electrical steel
CN104480386B (en) * 2014-11-27 2017-01-18 武汉钢铁(集团)公司 0.2mm-thick non-oriented silicon steel for high-speed motor and production method of 0.2mm-thick non-oriented silicon steel
JP6020863B2 (en) * 2015-01-07 2016-11-02 Jfeスチール株式会社 Non-oriented electrical steel sheet and manufacturing method thereof
CN104878288A (en) * 2015-05-22 2015-09-02 本钢板材股份有限公司 Method for controlling silicon steel corrugated defects
CN105256227B (en) * 2015-11-27 2017-12-08 武汉钢铁有限公司 A kind of coiling iron core non-orientation silicon steel and production method
CN105239005B (en) * 2015-11-27 2017-03-22 武汉钢铁(集团)公司 High-permeability non-oriented silicon steel and production method
CN105463310A (en) * 2015-12-07 2016-04-06 本钢板材股份有限公司 Production method of non-oriented silicon steel
CN107058867B (en) * 2017-03-28 2018-11-20 邢台钢铁有限责任公司 A kind of energy saving transformer iron core high Si pure iron and its production method
CN107385335B (en) * 2017-08-08 2018-12-11 马钢(集团)控股有限公司 A kind of new-energy automobile driving motor non-orientation silicon steel thin belt and manufacturing method
KR102080167B1 (en) * 2017-12-26 2020-02-21 주식회사 포스코 Method for manufacturing non-oriented electrical steel sheet
CN108179353A (en) * 2018-01-30 2018-06-19 蒙城县傲尊电子科技有限公司 A kind of cold rolling non-orientation silicon steel production technology
CN108396233A (en) * 2018-06-08 2018-08-14 张家港扬子江冷轧板有限公司 High intensity non-orientation silicon steel and its manufacturing method and application
CN109365530B (en) * 2018-10-09 2020-09-01 鞍钢股份有限公司 Hot continuous rolling production method of high-grade non-oriented silicon steel
CN109338223B (en) * 2018-11-09 2021-04-02 鞍钢股份有限公司 Process method for improving surface quality and performance of silicon steel product
CN110241362A (en) * 2019-07-09 2019-09-17 鞍钢股份有限公司 A kind of driving motor non-orientation silicon steel and its production method
CN110218945B (en) * 2019-07-10 2020-11-24 马鞍山钢铁股份有限公司 Non-oriented electrical steel without corrugated defects and preparation method thereof
CN110438317A (en) * 2019-07-29 2019-11-12 江苏理工学院 A kind of method that initial tissu Hot rolling prepares { 100 } texture column crystal non-oriented electrical steel
CN111748740A (en) * 2020-06-30 2020-10-09 武汉钢铁有限公司 Non-oriented silicon steel free of corrugated defects and excellent in magnetism and production method thereof

Also Published As

Publication number Publication date
CN101139681A (en) 2008-03-12

Similar Documents

Publication Publication Date Title
KR101365653B1 (en) Method for producing a grain-oriented electrical steel strip
CN101238226B (en) Method for producing a grain-oriented electrical steel strip
RU2318883C2 (en) Non-oriented electrical steel strip continuous casting method
CN100381598C (en) Orientating silicon steel, manufacturing process and equipment
CN104372238B (en) A kind of preparation method who is orientated high silicon steel
CN102330021B (en) Full production process of low-temperature oriented silicon steel
JP4880467B2 (en) Improved manufacturing method of non-oriented electrical steel sheet
CN101805873B (en) Low-cost and high-strength steel for automobile crossbeam and manufacturing method thereof
CN100463979C (en) Manufacturing method of cold rolling electric steel special for compressor
CN106167875B (en) A kind of strength and ductility product is more than 20GPa% economical high strength cold-rolled TRIP steel and preparation method thereof
TWI481724B (en) Manufacturing method of non - directional electromagnetic steel sheet
CN102041367B (en) Manufacturing method of thin strip continuously cast and cold rolled non-oriented electrical steel
CN106048390B (en) A kind of production method of thin slab continuous casting and rolling production non-oriented electrical steel 50W800
EP2272995B1 (en) A manufacturing method of oriented si steel with high electric-magnetic property
CN102199721B (en) Manufacture method of high-silicon non-oriented cold-rolled sheet
CN1258608C (en) Method for manufacturing cold-rolled orientation-free electrical sheet
CN103695619B (en) A kind of manufacture method of high magnetic strength common orientation silicon steel
CN100491574C (en) C-Mn-Ti-Nb series hot-rolled high strength high magnetic induction performance steel and manufacturing method thereof
CN101906577B (en) Non-oriented electrical steel produced by sheet continuous casting and rolling and method thereof
KR19990088437A (en) Grain oriented electromagnetic steel sheet and manufacturing method thereof
CN102443734B (en) Non-oriented electrical steel plate without corrugated defect and its manufacturing method
CN104789860A (en) Electrical steel and production method thereof
CN105950960B (en) Driving motor for electric automobile non-orientation silicon steel and preparation method thereof
CN101333620A (en) High grade non- oriented silicon steel and method for manufacturing same
US5803989A (en) Process for producing non-oriented electrical steel sheet having high magnetic flux density and low iron loss

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model