CN103031421B - Production method of non-oriented electrical steel coating semi-processed product - Google Patents
Production method of non-oriented electrical steel coating semi-processed product Download PDFInfo
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- CN103031421B CN103031421B CN201110303043.3A CN201110303043A CN103031421B CN 103031421 B CN103031421 B CN 103031421B CN 201110303043 A CN201110303043 A CN 201110303043A CN 103031421 B CN103031421 B CN 103031421B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 title claims abstract description 14
- 239000011248 coating agent Substances 0.000 title claims abstract description 12
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 238000005097 cold rolling Methods 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000005098 hot rolling Methods 0.000 claims abstract description 3
- 238000012858 packaging process Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000004080 punching Methods 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000007669 thermal treatment Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
The invention provides a production method of a non-oriented electrical steel coating semi-process product, which mainly comprises the working procedures of smelting, hot rolling, cold rolling, annealing, coating, rewinding and packaging, and is characterized in that a stretching working procedure is added between uncoiling and coiling process sections on a rewinding operating line, the stretching working procedure is realized by a group of pulling and straightening devices, a tensile force F is applied to a coated steel plate, and the requirements are met: s × Rp0.2≤F≤1.2×S×Rp0.2Wherein: s is the cross section area of the finished plate; rp0.2The yield strength of the finished plate is obtained. The invention can realize continuous and high-efficiency production, save energy consumption and reduce leveling procedures; can not only reserveThe processing performance and the mechanical performance required by a user can also realize the abnormal improvement of the electromagnetic performance after re-annealing; not only can the excellent characteristics of the traditional semi-process product be retained, but also the coating can greatly improve the installation performance; the grade can be reduced to select steel grade, and the production stability of the whole system can be kept.
Description
Technical field
The invention belongs to technical field of electrical sheet production, particularly relate to a kind of manufacture method of cold rolling non-oriented electrical steel coated semi handicraft product.
Background technology
The best use-pattern of cold rolling non-oriented electrical steel product is that punching after annealing prepares motor or electrical equipment electromagnetic conversion component, can eliminate the electromagnetic performance caused because of machining stress effect in punching and the course of processing like this and worsen.Widely used half handicraft product successfully solves this problem both at home and abroad, annealing equipment electrical steel factory by means of user is improved thermal treatment process, and successfully solve the control contradiction of iron loss and magnetic strength two indexes in electromagnetic performance, reach the product of high efficiency production high performance index.It is smooth that existing half handicraft product needs to carry out " under critical pressure " after final softening material annealing, and object promotes grain growth or abnormal growth in user's annealing afterwards, obtains excellent electromagnetic performance index.Along with electrical equipment and electrical industry level of automation raising and product is saved energy and reduce the cost, the requirement of high-level efficiency index, without on coated semi Process ba-sis, coated semi handicraft product is proposed in tradition, object retains original half handicraft product contrast the excellent processing characteristics of full handicraft product and anneal on the basis of rear excellent electromagnetic property again, by means of full handicraft product coating to the effect of integrated iron core loss control, obtain overall more excellent electromagnetic performance.
Coated semi handicraft product is often produced by means of existing multi-functional continuous annealing furnace in producing, and thermal treatment adopts incomplete recrystallized annealing, carries out continuous coated production at overall Effec-tive Function line.This product remains the processing characteristics needed for user, but because of without " under critical pressure " process, can only obtain being similar to raw steel kind end properties and can not obtaining the excellent electromagnetic property obtained because tissue abnormalities is grown up after product punching in user's stress relieving.
Cold rolling electric is stress sensitivity steel, and along with the raising silicone content of the trade mark improves, stress is more obvious to performance impact, how can at the after-applied stress energy storage of product coating, and not destroying again coating is exactly the technological difficulties that the present invention needs to solve.
Summary of the invention
The object of the invention is to overcome the deficiency existing for above-mentioned prior art, provide one after completing coating process, the efficient production method of the non-oriented electrical steel coated semi handicraft product of " critical strain and stress energy storage " can be carried out to product.
The present invention is achieved in that the production method of this non-oriented electrical steel coated semi handicraft product mainly comprises smelting, hot rolling, cold rolling, annealing, coating, rewinding, packaging process, it is characterized in that on rewinding service line, one stretching process is increased between uncoiling and coiling technique section, realized by one group of straightening device, apply certain pulling force to steel plate after coating, this tensile force f should meet: S × Rp
0.2≤ F≤1.2 × S × Rp
0.2, wherein: S is production board cross-sectional area; Rp
0.2for production board yield strength.
Stretching process of the present invention is realized by one group of straightening device, according to circumstances can select three rollers, five rollers or multiple roll straightening device; Described pulling-straightening roller should be the rubber roll of not hindering steel strip surface.Straightening device possesses Sheet stretch straightening function, can realize the micro-extensional of steel band; For the different trade mark or different subjects alloy content determination product critical guideline of deformation; Be consistent with former unit tension force and continuous operation and stablize, reach critical strain and energy storage effect with this.
The cold rolling non-orientation silicon steel composition range that the inventive method is suitable for is: C < 0.010%, Si < 1.6%, Mn < 1.0%, P < 0.20%, S < 0.01%, Als < 1.0%; Mainly be applicable to user and possess the thermal treatment unit eliminated stress; Also the processing of all kinds of complex chip and the mechanical performance index needed for assembling is applicable to.Adopt production method of the present invention trade mark needed for reference user in the selection of steel grade can reduce the trade mark to produce, and coating process and before other processing parameter keep original trade mark production technique constant.
Adopt the inventive method both to achieve continuous high-efficient to produce, in turn save energy consumption, decrease smooth operation; Both remained processing characteristics needed for user, mechanical property, after achieving again annealing again, electromagnetic performance is abnormal improves; Both remain the excellent specific property of traditional half handicraft product, achieve again the significantly improvement of coating to installation performance; Also can refer to the former trade mark and carry out steel grade selection, or reduce trade mark selection, and it is constant to realize other process control technology, can make total system administration measure.
Embodiment
The present invention is further described by the following embodiment.
The chemical composition of embodiment of the present invention cold rolling non-orientation silicon steel is: C:0.004%, Si:1.14%, Mn:0.33%, P:0.12%, S:0.002%, Als:0.28%.Its main production flow process is: converter smelting, RH vacuum refinement, and steel billet rolls into the thick hot-rolled sheet of 2.2mm, hot-rolled sheet coiling temperature 710 DEG C after 1120 DEG C of heating, and hot-rolled sheet is cold-rolled to 0.5mm, and cold-reduced sheet is annealed through 910 DEG C × 2min.Production board yield strength is 260Mpa, and finished width is 1030mm.The embodiment of the present invention increases by one group of five roller drawing and straightening device between uncoiling and coiling technique section on rewinding service line, and the tensile force f of granting finished steel plate meets: S × Rp
0.2≤ F≤1.2 × S × Rp
0.2, as the tensile force f=1.1 × 0.0005 × 1.030 × 245 × 1000000=138 (kN) of embodiment 1.The performance of embodiment of the present invention steel plate is in table 1.
The performance of table 1 embodiment of the present invention steel plate
*in table, electromagnetic performance is performance after punching stress relief annealing
Claims (2)
1. the production method of a non-oriented electrical steel coated semi handicraft product, mainly comprise smelting, hot rolling, cold rolling, annealing, coating, rewinding, packaging process, it is characterized in that, described cold-reduced sheet is annealed through 910 DEG C × 2min, on rewinding service line, between uncoiling and coiling technique section, increase by one stretching process, realized by one group of straightening device, apply certain pulling force to steel plate after coating, this tensile force f should meet: S × Rp
0.2≤ F≤1.2 × S × Rp
0.2, wherein: S is production board cross-sectional area; Rp
0.2for production board yield strength.
2. the production method of non-oriented electrical steel coated semi handicraft product according to claim 1, is characterized in that described straightening device is three rollers, five roller drawing and straightening device; Described pulling-straightening roller is rubber roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303043.3A CN103031421B (en) | 2011-09-29 | 2011-09-29 | Production method of non-oriented electrical steel coating semi-processed product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303043.3A CN103031421B (en) | 2011-09-29 | 2011-09-29 | Production method of non-oriented electrical steel coating semi-processed product |
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| Publication Number | Publication Date |
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| CN103031421A CN103031421A (en) | 2013-04-10 |
| CN103031421B true CN103031421B (en) | 2015-11-25 |
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| CN201110303043.3A Active CN103031421B (en) | 2011-09-29 | 2011-09-29 | Production method of non-oriented electrical steel coating semi-processed product |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779877B (en) * | 2014-12-23 | 2017-10-27 | 鞍钢股份有限公司 | Efficient production method of semi-processed non-oriented electrical steel |
| CN105986176A (en) * | 2015-03-03 | 2016-10-05 | 鞍钢股份有限公司 | Production method of semi-process cold-rolled non-oriented electrical steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3176933B2 (en) * | 1995-12-19 | 2001-06-18 | ポハング アイアン アンド スティール カンパニイ リミテッド | Manufacturing method of non-oriented electrical steel sheet with excellent adhesion of insulating coating |
| CN1864879A (en) * | 2006-06-06 | 2006-11-22 | 湖南华菱涟源钢铁有限公司 | Method for producing semi-process cold-rolled silicon steel by sheet billet continuous casting and rolling process |
| CN1887512A (en) * | 2005-06-30 | 2007-01-03 | 宝山钢铁股份有限公司 | Production process of cold rolled orientation-free electrical steel plate with low iron loss and high magnetic induction |
| CN1982483A (en) * | 2005-12-16 | 2007-06-20 | 上海申群物资有限公司 | Production of non-directional cold-rolling silicon steel disc |
| CN101343677A (en) * | 2008-09-01 | 2009-01-14 | 湖南华菱涟源钢铁有限公司 | Production method of low-silicon low-carbon deep drawing steel |
| CN102220466A (en) * | 2011-05-04 | 2011-10-19 | 莱芜市泰山冷轧板有限公司 | Method for producing semi-processed cold-rolled non-oriented electrical steel |
-
2011
- 2011-09-29 CN CN201110303043.3A patent/CN103031421B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3176933B2 (en) * | 1995-12-19 | 2001-06-18 | ポハング アイアン アンド スティール カンパニイ リミテッド | Manufacturing method of non-oriented electrical steel sheet with excellent adhesion of insulating coating |
| CN1887512A (en) * | 2005-06-30 | 2007-01-03 | 宝山钢铁股份有限公司 | Production process of cold rolled orientation-free electrical steel plate with low iron loss and high magnetic induction |
| CN1982483A (en) * | 2005-12-16 | 2007-06-20 | 上海申群物资有限公司 | Production of non-directional cold-rolling silicon steel disc |
| CN1864879A (en) * | 2006-06-06 | 2006-11-22 | 湖南华菱涟源钢铁有限公司 | Method for producing semi-process cold-rolled silicon steel by sheet billet continuous casting and rolling process |
| CN101343677A (en) * | 2008-09-01 | 2009-01-14 | 湖南华菱涟源钢铁有限公司 | Production method of low-silicon low-carbon deep drawing steel |
| CN102220466A (en) * | 2011-05-04 | 2011-10-19 | 莱芜市泰山冷轧板有限公司 | Method for producing semi-processed cold-rolled non-oriented electrical steel |
Non-Patent Citations (1)
| Title |
|---|
| 王华春主编.拉伸矫直.《精整工》.中国建材工业出版社,2011, * |
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