CN102912103A - Production method for non-oriented electric steel product with high longitudinal electromagnetic performance - Google Patents
Production method for non-oriented electric steel product with high longitudinal electromagnetic performance Download PDFInfo
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- CN102912103A CN102912103A CN201210405940XA CN201210405940A CN102912103A CN 102912103 A CN102912103 A CN 102912103A CN 201210405940X A CN201210405940X A CN 201210405940XA CN 201210405940 A CN201210405940 A CN 201210405940A CN 102912103 A CN102912103 A CN 102912103A
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Abstract
The invention provides a production method for a non-oriented electric steel product with high a longitudinal electromagnetic performance. The method comprises the following processes of: smelting, carrying out hot rolling, carrying out cold rolling, carrying out continuous annealing of a finished product, carrying out coating, rewinding and packaging. The production method is characterized in that a certain tensile force is brought to a steel plate along a rolling direction of a steel belt during the product is continuously annealed, so that the steel plate is recrystallized under a yield condition. According to the production method, a tensile force F can be shown as F=K*d*B*RP0.2, wherein K is a coefficient of the tensile force, ranging from 0.8 to 1.4; d is thickness of the steel belt; B is width of the steel belt; and Rp0.2 is high-temperature yield strength of the steel belt. By adopting the production method, the product keeps an excellent characteristic of a non-oriented electric steel series, and is excellent in longitudinal electromagnetic performance; and the production method is better suitable for manufacture of longitudinal oriented magnetic conducting products.
Description
Technical field
The invention belongs to technical field of steel production, relate in particular to a kind of production method that can improve the non-oriented electrical steel product of its vertical electromagnetic performance.
Background technology
Cold rolling non-oriented electrical steel is little because of anisotropy, i.e. excellent magnetic in length and breadth, and the iron core that mainly is used in swivel arrangement is made.But the iron core of the directed magnetic conduction device of part is because of the intermittent work characteristics, or consider from cost, processing, raw material supply multi-angle, non-oriented electrical steel commonly used is made little, little, medium-sized transformer, inducer, reactor etc., even still have so far abroad factory with the medium-and-large-sized transformer of non-oriented high grade production, take full advantage of exactly the advantages such as the non-oriented electrical steel processibility is good, stress sensitivity is poor, assembling is flexible, with low cost.
Along with the grasp of non-oriented electrical steel high efficiency products technology, how to improve the vertical performance of product, better from user's use angle development, will bring more wide application space for the non-oriented electrical steel product.
Summary of the invention
The object of the invention is to overcome the existing deficiency of above-mentioned prior art, provide a kind of industries such as circulating type transformer, small medium-sized transformer, inducer, reactor of being more widely applicable for, the non-oriented electrical steel product of its vertical electromagnetic performance excellence.
How the present invention realizes, the production method of the vertical electromagnetic performance excellent product of this non-oriented electrical steel comprises smelting, hot rolling, cold rolling, finished product continuous annealing, coating, rewinding and packaging process, be characterized in finished product continuous annealing process, steel plate is prolonged steel band rolling direction apply certain tension force, make steel plate under the condition that surrender occurs, recrystallize occur, tension force F=K*d*B* Rp0.2 of the present invention, wherein K is the coefficient of tension, span is 0.8 ~ 1.4, d is thickness of strips, B is width of steel band, and Rp0.2 is the steel band high-temperature yield strength.The coefficient of tension is too little not obvious to recrystallization, if too large surface of steel plate produces the corrugated defective, even broken belt occurs and scraps.
Technical solution of the present invention is applicable to but is not limited to the production of non-oriented electrical steel product, but more is applicable to efficient, high grade non-oriented electrical steel product and Thin Strip Steel product; Technical solution of the present invention is according to the thermodynamics and kinetics basis, by adjusting tension force in the product heat treatment process, raising steel band favorable texture component forms, grain structure is grown, and vertical proneness strengthens, and say the wedge shape magnetic domain that reduces or eliminates vertical vertically magnetic domain and various obstruction magnetization process from the magnetics angle, promote the longitudinal magnetization excellent property; The Tensity size that the tension force that steel band tension force in the technical solution of the present invention control heat treatment process in stove is considered from stable angle greater than routine converts and obtains to the yield strength under this steel grade thermal treatment temp; Technical solution of the present invention can be intuitively changes numeric reference, example by width specifications before and after the steel band annealing: adjust stove internal tension control steel band and narrow down 5 ~ 20mm for best, also can measure according to magnetotropism in length and breadth and set; Technical solution of the present invention can be implemented in the constant situation of other processing parameter, but for the demand that adapts to different industries be not limited to before and after processing parameter constant.
In the heat treatment process of producing according to this technical scheme, crystal grain generates and grows up under the meridional stress effect, and crystal grain is to beneficial direction＜100〉to rotate or microslip is strengthened, the unfavorable texture component growth that former cold working process energy storage is higher is weakened.
The non-oriented electrical steel product that adopts technical solution of the present invention to produce, on the basis that has kept non-oriented electrical steel series good characteristic, its vertical electromagnetic performance is excellent, can be applicable to better the manufacturing of portrait orientation magnetic conduction product.
Embodiment
The present invention is further illustrated below by embodiment.
The chemical ingredients of embodiment of the invention cold rolling non-orientation silicon steel is: C:0.002%, Si:2.36%, Mn:0.23%, P:0.10%, S:0.003%, Als:0.23%.Its main production flow process is: converter smelting, and vacuum refinement, steel billet rolls into the thick hot-rolled sheet of 2.3mm after 1100 ℃ of heating, and hot-rolled sheet is cold-rolled to 0.35mm, and cold-reduced sheet is annealed through 910 ℃ * 2min.Yield strength is 0.693Mpa during 910 ℃ of cold-reduced sheets, and finished width is 1030mm.
Embodiment of the invention holding-zone in the finished product continuous annealing furnace applies the tension force F identical with the steel plate rolling direction to be satisfied: S * Rp0.2≤F≤1.2 * S * Rp0.2, tension force evenly distribute on the steel plate transverse section, make steel plate produce uniformly distortion under the tension force effect.Such as the tensile force f of embodiment 1=1.0 * 0.0035 * 1.030 * 0.693=2.5(kN).Electromagnetic performance after the tension force that the embodiment of the invention applies and the steel plate stress relief annealing sees Table 1.
Vertical performance of the tension force that table 1 embodiment of the invention applies and steel plate
Claims (1)
1. the production method of the vertical electromagnetic performance excellent product of non-oriented electrical steel, comprise smelting, hot rolling, cold rolling, finished product continuous annealing, coating, rewinding and packaging process, it is characterized in that in finished product continuous annealing process, steel plate is prolonged steel band rolling direction apply certain tension force, tension force F=K*d*B* Rp0.2, wherein K is the coefficient of tension, span is 0.8 ~ 1.4, d is thickness of strips, and B is width of steel band, and Rp0.2 is the steel band high-temperature yield strength.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210405940XA CN102912103A (en) | 2012-10-23 | 2012-10-23 | Production method for non-oriented electric steel product with high longitudinal electromagnetic performance |
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| CN201210405940XA CN102912103A (en) | 2012-10-23 | 2012-10-23 | Production method for non-oriented electric steel product with high longitudinal electromagnetic performance |
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| CN102912103A true CN102912103A (en) | 2013-02-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816135A (en) * | 2015-05-07 | 2015-08-05 | 马钢(集团)控股有限公司 | Electrical steel and manufacturing method thereof |
| CN107109583A (en) * | 2014-12-24 | 2017-08-29 | Posco公司 | Non-oriented electromagnetic steel sheet and its manufacture method |
| CN107630130A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of excellent non-oriented electrical steel product processes of longitudinal electromagnetic performance |
| CN107630131A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | One kind improves the anisotropic production method of electrical steel product electromagnetic performance |
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| CN101509057A (en) * | 2008-12-17 | 2009-08-19 | 马鞍山钢铁股份有限公司 | Full-technique non-oriented electrical steel continuous annealing test method |
| CN102268516A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | Decarburization and annealing process of high-carbon middle-and-low-grade cold rolling orientation-free silicon steel |
| CN102676914A (en) * | 2012-05-09 | 2012-09-19 | 首钢总公司 | Cold-rolled non-oriented electric steel and preparation method thereof |
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2012
- 2012-10-23 CN CN201210405940XA patent/CN102912103A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509057A (en) * | 2008-12-17 | 2009-08-19 | 马鞍山钢铁股份有限公司 | Full-technique non-oriented electrical steel continuous annealing test method |
| CN102268516A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | Decarburization and annealing process of high-carbon middle-and-low-grade cold rolling orientation-free silicon steel |
| CN102676914A (en) * | 2012-05-09 | 2012-09-19 | 首钢总公司 | Cold-rolled non-oriented electric steel and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 王华春主编: "《精整工》", 30 April 2011, article "精整工", pages: 38-39 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107109583A (en) * | 2014-12-24 | 2017-08-29 | Posco公司 | Non-oriented electromagnetic steel sheet and its manufacture method |
| CN107109583B (en) * | 2014-12-24 | 2019-11-08 | Posco公司 | Non-oriented electromagnetic steel sheet and its manufacturing method |
| US11299792B2 (en) | 2014-12-24 | 2022-04-12 | Posco | Non-oriented electrical steel sheet and manufacturing method therefor |
| CN104816135A (en) * | 2015-05-07 | 2015-08-05 | 马钢(集团)控股有限公司 | Electrical steel and manufacturing method thereof |
| CN107630130A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of excellent non-oriented electrical steel product processes of longitudinal electromagnetic performance |
| CN107630131A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | One kind improves the anisotropic production method of electrical steel product electromagnetic performance |
| CN107630131B (en) * | 2016-07-18 | 2019-05-31 | 鞍钢股份有限公司 | A kind of anisotropic production method of improvement electrical steel product electromagnetic performance |
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Application publication date: 20130206 |