CN103031423A - Method for improving performance of non-oriented electrical steel high-efficiency and high-grade product - Google Patents
Method for improving performance of non-oriented electrical steel high-efficiency and high-grade product Download PDFInfo
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- CN103031423A CN103031423A CN2011103030715A CN201110303071A CN103031423A CN 103031423 A CN103031423 A CN 103031423A CN 2011103030715 A CN2011103030715 A CN 2011103030715A CN 201110303071 A CN201110303071 A CN 201110303071A CN 103031423 A CN103031423 A CN 103031423A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 title claims abstract description 7
- 238000005097 cold rolling Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000005098 hot rolling Methods 0.000 claims abstract description 6
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000000137 annealing Methods 0.000 claims abstract description 3
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000000047 product Substances 0.000 abstract 4
- 239000002253 acid Substances 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 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 method for improving the performance of high-efficiency and high-grade products of non-oriented electrical steel, which is suitable for cold-rolled electrical steel which needs to be subjected to hot-rolled plate normalizing treatment before cold rolling, and mainly comprises the working procedures of smelting, hot rolling, normalizing, cold rolling and annealing, and is characterized in that a drawing working procedure is added before normalizing treatment after hot rolling, and is realized by a group of pulling and straightening devices, and the pulling force F applied to a steel plate meets the following requirements: s × Rp0.2≤F≤1.2×S×Rp0.2Wherein S is the cross-sectional area of the hot rolled plate; rp0.2The yield strength of the hot rolled plate. By adopting the method, and aiming at the design of the drawing process parameters of high-efficiency and high-grade products with different grades, the grades can reach the tension parameters of the optimal critical deformation, so that the electromagnetic performance of the final product is promoted to be further improved, the market competitiveness of the product is improved, and meanwhile, the surface adhered iron sheet is promoted to be loose through the drawing process, and the acid washing quality of the product is improved.
Description
Technical field
The invention belongs to the electrical steel production technical field, relate in particular to a kind of method that stretching device improves efficient and high grade electrical steel product performance of using.
Background technology
Cold rolling non-oriented electrical steel is processed by normalizing efficiently and in the high trade mark products production and is improved hot rolled strip original structure homogeneity and alligatoring is mingled with and two-phase, improves the favorable texture component, improves the product electromagnetic performance with this.In electrical steel product market competition day by day serious today, how further the electromagnetic performance index of improving product becomes R﹠D personnel's top priority.
In cold rolling electrical steel product was produced, the hot-rolled steel sheet surface was for waiting axle recrystallized structure, and the centre is banded structure, and along with the raising of silicone content, the equiaxed structure ratio further reduces; Top layer equiaxed grain structure favorable texture component is far above heart section banded structure, but conventional Hot Rolled Plate Normalizing processed, and because heart section deformation quantity is large, recrystallize speed is high, cause whole normalizing after, favourable component reduces.
Summary of the invention
The object of the invention is to overcome the existing defective of above-mentioned prior art; provide a kind of application stretching device to the further machining deformation in steel plate top layer or energy storage; to promote textura epidermoidea in normalizing is processed, to first develop; obtain preferably normalized structure, and then improve the method that non-oriented electrical steel efficiently reaches high trade mark product electromagnetic performance.
The present invention is achieved in that this raising non-oriented electrical steel efficiently and the method for high trade mark product performance is applicable to the cold rolling electric that cold rolling front need carry out the Hot Rolled Plate Normalizing processing; mainly comprise smelting, hot rolling, normalizing, cold rolling, annealing operation; be characterized in increasing by one stretching process before normalizing is processed after hot rolling; realized that by one group of straightening device the tensile force f that steel plate is applied should satisfy: S * Rp
0.2≤ F≤1.2 * S * Rp
0.2,
Wherein: S is the hot-rolled sheet cross-sectional area; Rp
0.2Be the hot-rolled sheet yield strength.
What form in the high grade cold rolling non-oriented silicon steel hot-rolled sheet operation of rolling is the plate texture that is parallel to rolling surface with (111) face, and this unfavorable texture can be genetic to finished product, and (111) plane texture is unfavorable to magnetic property.The present invention enters the position, stokehold or sets up a straightening device in the Abrollhaspel front at steel band; and match with straightening device before the existing cold rolling electric normalizing machine welding machine; between two straightening devices, set up tension force; thereby make steel plate produce certain viscous deformation; hot-rolled sheet part crystal grain is around＜111〉the crystal orientation rotation; (111) plate texture is converted into＜111〉silk weaving structures,＜111〉silk weaving structures＜111〉crystal orientation be parallel to draw direction, thus steel plate texture improved.
Adopt the inventive method, and the drawing parameter of and high trade mark product efficient for different trades mark design, can make each trade mark reach the tension parameters of best critical strain, thereby promote the finished product electromagnetic performance further to promote, improve the competitiveness of product in market, also promote the surface adhesion iron sheet loose by drawing process simultaneously, improved the product pickling quality.
Embodiment
The present invention is further described by the following embodiment.
The chemical component weight per-cent of embodiment of the invention electrical steel is: C:0.003%, and Si:2.1%, Mn:0.25%, P:0.13%, S:0.004%, Als:0.34%, all the other are iron and inevitable impurity element.
The main production flow process of embodiment of the invention electrical steel is: converter smelting; the RH vacuum refinement; steel billet rolls into the thick hot-rolled sheet of 2.2mm after 1150 ℃ of heating; it is 720 ℃ that hot-rolled sheet batches temperature; hot-rolled sheet is cold-rolled to 0.5mm after 950 ℃ * 1.5min normalizing, cold-reduced sheet is annealed through 930 ℃ * 2min.The hot-rolled sheet yield strength is 395Mpa, and the hot-rolled sheet width is 1020mm.The embodiment of the invention enters the position, stokehold at steel band and sets up five roller straightening devices, matches with five roller straightening devices before the existing normalizing machine welding machine, sets up tension force between two straightening devices, and the tensile force f of applying for the normalizing front spring satisfies S * Rp
0.2≤ F≤1.2 * S * Rp
0.2, such as the tensile force f of embodiment 1=1.1 * 0.0022 * 1.020 * 395=975 (kN).
The performance of embodiment of the invention electrical steel sees Table 1.
The performance of table 1 embodiment of the invention electrical steel
Claims (1)
1. one kind is improved non-oriented electrical steel efficiently and the method for high trade mark product performance; be applicable to cold rolling front need and carry out the cold rolling electric that Hot Rolled Plate Normalizing is processed; mainly comprise smelting, hot rolling, normalizing, cold rolling, annealing operation; it is characterized in that increasing by one stretching process before normalizing is processed after hot rolling; realized that by one group of straightening device the tensile force f that steel plate is applied should satisfy: S * Rp
0.2≤ F≤1.2 * S * Rp
0.2, wherein S is the hot-rolled sheet cross-sectional area; Rp
0.2Be the hot-rolled sheet yield strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103030715A CN103031423A (en) | 2011-09-29 | 2011-09-29 | Method for improving performance of non-oriented electrical steel high-efficiency and high-grade product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103030715A CN103031423A (en) | 2011-09-29 | 2011-09-29 | Method for improving performance of non-oriented electrical steel high-efficiency and high-grade product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103031423A true CN103031423A (en) | 2013-04-10 |
Family
ID=48018822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103030715A Pending CN103031423A (en) | 2011-09-29 | 2011-09-29 | Method for improving performance of non-oriented electrical steel high-efficiency and high-grade product |
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| Country | Link |
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| CN (1) | CN103031423A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107626754A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | Method for improving pickling quality of cold-rolled electrical steel product |
| CN112195319A (en) * | 2020-09-25 | 2021-01-08 | 张家港扬子江冷轧板有限公司 | Normalizing treatment method for preventing non-oriented silicon steel from being internally oxidized |
| CN112877527A (en) * | 2021-01-11 | 2021-06-01 | 长春工业大学 | Method for preparing high-strength non-oriented electrical steel based on critical deformation |
| CN114369754A (en) * | 2021-11-29 | 2022-04-19 | 广东中晟电磁科技股份有限公司 | Method for producing low-and-medium-grade non-oriented electrical steel through prestress |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041222A (en) * | 2006-03-22 | 2007-09-26 | 宝山钢铁股份有限公司 | Cold-rolled non-oriented electrical steel and the method for preparing the same |
-
2011
- 2011-09-29 CN CN2011103030715A patent/CN103031423A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041222A (en) * | 2006-03-22 | 2007-09-26 | 宝山钢铁股份有限公司 | Cold-rolled non-oriented electrical steel and the method for preparing the same |
Non-Patent Citations (1)
| Title |
|---|
| 王华春: "《精整工》", 30 April 2011, article "2.2.1拉伸矫直", pages: 2.2.1 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107626754A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | Method for improving pickling quality of cold-rolled electrical steel product |
| CN112195319A (en) * | 2020-09-25 | 2021-01-08 | 张家港扬子江冷轧板有限公司 | Normalizing treatment method for preventing non-oriented silicon steel from being internally oxidized |
| CN112877527A (en) * | 2021-01-11 | 2021-06-01 | 长春工业大学 | Method for preparing high-strength non-oriented electrical steel based on critical deformation |
| CN112877527B (en) * | 2021-01-11 | 2023-01-31 | 长春工业大学 | Method for preparing high-strength non-oriented electrical steel based on critical deformation |
| CN114369754A (en) * | 2021-11-29 | 2022-04-19 | 广东中晟电磁科技股份有限公司 | Method for producing low-and-medium-grade non-oriented electrical steel through prestress |
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Application publication date: 20130410 |