CN101348853A - Method for reducing iron loss of common orientated electrical steel - Google Patents
Method for reducing iron loss of common orientated electrical steel Download PDFInfo
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- CN101348853A CN101348853A CNA2008102220231A CN200810222023A CN101348853A CN 101348853 A CN101348853 A CN 101348853A CN A2008102220231 A CNA2008102220231 A CN A2008102220231A CN 200810222023 A CN200810222023 A CN 200810222023A CN 101348853 A CN101348853 A CN 101348853A
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- electrical steel
- iron loss
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Abstract
The invention relates to a method for reducing the iron loss of common oriented electrical steel, belonging to the oriented electrical steel technical field. After a common oriented electrical steel sheet produced through heating a low-temperature slab as a raw material undergoes high-temperature annealing, surface laser notching or mechanical notching is adopted for thinning the magnetic domain and improving the iron loss of products, and the notching space is between 2 and 20 millimeters. The method has the advantage of further reducing the iron loss of the products.
Description
Technical field
The invention belongs to the oriented electrical steel technical field, particularly a kind of method that reduces iron loss of common orientated electrical steel.Be a kind of magnetic improvement, especially production method of the improved low-temperature heat common orientated electrical steel of core loss property plate,, reduce the iron loss of product by refinement magnetic domain technology such as laser scored and mechanical score.
Background technology
Invented cold-rolled orientation electrical steel and production technology thereof from Goss in 1934, next year U.S. ARMCO company at first is applied to industrialized production, and seven during the last ten years, and people are devoted to the improvement of magnetic property always.Pass through metallurgical method before this, as improve orientation degree, attenuate product thickness, improve resistivity and reduce grain-size etc., obtained significant achievement.Since these methods exist certain limitation, so people seek non-metallurgical method and reduce iron loss, developed stress insulating coating and refinement magnetic domain technology in succession, and be applied to industrial production respectively at the 1970's and the 1980's.
Refinement magnetic domain technology has the potentiality of bigger reduction iron loss, and people have given greatly to pay close attention to it, have developed many new technology.Yet big production application is on the magnetic induction density higher H I-B product of producing in conventional high-temperature slab heating technique, as the magnetic induction density B of Nippon Steel to magneticstrength 800A/M
800High magnetic strength HIB product more than 1.92T just carries out the refinement magnetic domain to be handled.People it is generally acknowledged that the size of neticdomain wall spacing depends on the orientation degree of Goss crystal grain, magnetic induction density higher H I-B product orientation degree height, and the neticdomain wall spacing is big, and the refinement magnetic domain just can reach due effect; And the refinement magnetic domain of the lower common power taking worker product made from steel of magnetic induction density has little effect no commercial application value.
Along with the development of cold-rolled orientation electrical steel production technology, in the last few years, shortcoming such as process furnace maintenance difficult, the production efficiency that people exist in producing at conventional high-temperature slab heating technique is low, lumber recovery is low had been developed low temperature slab heating technique.Since its with the conventional high-temperature method production technique, technical exist many different, thereby make product have some characteristics.Therefore, can adopt the iron loss of refinement magnetic domain technology to the common orientated electrical steel product of the bigger low temperature slab heating technique production of grain-size.
Summary of the invention
The object of the invention has been to provide a kind of method that reduces iron loss of common orientated electrical steel, and the magnetic property of common orientated electrical steel product is further improved.
The common orientated electrical steel plate that supplied materials of the present invention is produced for low temperature slab heating is finished after the high temperature annealing, adopts surperficial mechanical score or laser scored, refinement magnetic domain, the iron loss of product improved.The indentation spacing is at 2-20mm.
The composition of common orientated electrical steel plate of the present invention is: C 〉=0.005wt%, and Si:2.5-6.5wt%, Mn:0.01-0.4wt%, Als:0.001-0.04wt%, N:0.005-0.015wt%, S≤0.03wt%, surplus is iron and unavoidable impurities.
Slab heating temperature of the present invention is at 1200-1300 ℃.
Mechanical score of the present invention is the discaling roll indentation.
The invention has the advantages that, further reduce the product iron loss.
Embodiment
To contain C:0.045wt%, Si:3.05wt%, Mn:0.1wt%, Als:0.02wt%, N:0.008wt%, S:0.006wt%, surplus is that the steel billet of iron and unavoidable impurities heats hot rolling and pickling down at 1230 ℃, secondary cold-rolling through band process annealing, through operations such as coating, high temperature annealings, obtain finished product again, measure its magnetic property (iron loss and magnetic strength).At above-mentioned finished product, adopt the mechanical score method, along perpendicular to the line of steel plate rolling direction, be respectively 2.5mm, 5mm, 10mm at interval, remeasure its magnetic property (iron loss and magnetic strength) after finishing, and compare with result before the indentation.Behind the indentation product iron loss, magnetic strength velocity of variation see Table 1 respectively, table 2.
The velocity of variation of iron loss before and after table 1 indentation
The velocity of variation of magnetic strength before and after table 2 indentation
Claims (3)
1, a kind of method that reduces iron loss of common orientated electrical steel, it is characterized in that the common orientated electrical steel plate that supplied materials is produced for the heating of low temperature slab is finished after the high temperature annealing, adopt surface laser indentation or mechanical score refinement magnetic domain, improve the iron loss of product, the indentation spacing is at 2-20mm.
2, in accordance with the method for claim 1, it is characterized in that, the composition of described common orientated electrical steel plate is: C: 〉=0.005wt%, Si:2.5-6.5wt%, Mn:0.01-0.4wt%, Als:0.001-0.04wt%, N:0.005-0.015wt%, S≤0.03wt%, surplus is iron and unavoidable impurities.
3, in accordance with the method for claim 1, it is characterized in that described slab heating temperature is at 1200-1300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102220231A CN101348853A (en) | 2008-09-05 | 2008-09-05 | Method for reducing iron loss of common orientated electrical steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102220231A CN101348853A (en) | 2008-09-05 | 2008-09-05 | Method for reducing iron loss of common orientated electrical steel |
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| Publication Number | Publication Date |
|---|---|
| CN101348853A true CN101348853A (en) | 2009-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102220231A Pending CN101348853A (en) | 2008-09-05 | 2008-09-05 | Method for reducing iron loss of common orientated electrical steel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831538A (en) * | 2010-05-06 | 2010-09-15 | 上海大学 | Method for reducing iron loss of oriented silicon steel by utilizing ultrasonic waves |
| CN102477484A (en) * | 2010-11-26 | 2012-05-30 | 宝山钢铁股份有限公司 | Quick laser scribing method |
| CN104736728A (en) * | 2012-10-30 | 2015-06-24 | 杰富意钢铁株式会社 | Production method for oriented magnetic steel sheet exhibiting low iron loss |
| CN106128687A (en) * | 2016-08-01 | 2016-11-16 | 浙江艾默可科技有限公司 | A kind of method reducing amorphous iron core iron loss |
| CN110317939A (en) * | 2019-08-07 | 2019-10-11 | 包头市威丰稀土电磁材料股份有限公司 | A kind of application of mechanical score machine in CT production line |
| CN113584279A (en) * | 2020-04-30 | 2021-11-02 | 宝山钢铁股份有限公司 | Stress-relief-resistant annealed notch oriented silicon steel and manufacturing method thereof |
| CN113957222A (en) * | 2021-10-26 | 2022-01-21 | 无锡普天铁心股份有限公司 | Method for reducing iron loss of oriented silicon steel |
-
2008
- 2008-09-05 CN CNA2008102220231A patent/CN101348853A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831538A (en) * | 2010-05-06 | 2010-09-15 | 上海大学 | Method for reducing iron loss of oriented silicon steel by utilizing ultrasonic waves |
| CN101831538B (en) * | 2010-05-06 | 2011-12-21 | 上海大学 | Method for reducing iron loss of oriented silicon steel by utilizing ultrasonic waves |
| CN102477484A (en) * | 2010-11-26 | 2012-05-30 | 宝山钢铁股份有限公司 | Quick laser scribing method |
| WO2012068829A1 (en) | 2010-11-26 | 2012-05-31 | 宝山钢铁股份有限公司 | Method of fast laser scribing |
| US20130284711A1 (en) * | 2010-11-26 | 2013-10-31 | Baoshan Iron & Steel Co., Ltd. | Fast-speed laser scoring method |
| US9604312B2 (en) * | 2010-11-26 | 2017-03-28 | Baoshan Iron & Steel Co., Ltd. | Fast-speed laser scoring method |
| CN104736728B (en) * | 2012-10-30 | 2016-08-24 | 杰富意钢铁株式会社 | The manufacture method of low iron loss orientation electromagnetic steel plate |
| CN104736728A (en) * | 2012-10-30 | 2015-06-24 | 杰富意钢铁株式会社 | Production method for oriented magnetic steel sheet exhibiting low iron loss |
| CN106128687A (en) * | 2016-08-01 | 2016-11-16 | 浙江艾默可科技有限公司 | A kind of method reducing amorphous iron core iron loss |
| CN106128687B (en) * | 2016-08-01 | 2018-04-24 | 浙江艾默可科技有限公司 | A kind of method for reducing amorphous iron core iron loss |
| CN110317939A (en) * | 2019-08-07 | 2019-10-11 | 包头市威丰稀土电磁材料股份有限公司 | A kind of application of mechanical score machine in CT production line |
| CN113584279A (en) * | 2020-04-30 | 2021-11-02 | 宝山钢铁股份有限公司 | Stress-relief-resistant annealed notch oriented silicon steel and manufacturing method thereof |
| CN113584279B (en) * | 2020-04-30 | 2023-09-12 | 宝山钢铁股份有限公司 | Stress relief annealing notch resistant oriented silicon steel and manufacturing method thereof |
| CN113957222A (en) * | 2021-10-26 | 2022-01-21 | 无锡普天铁心股份有限公司 | Method for reducing iron loss of oriented silicon steel |
| CN113957222B (en) * | 2021-10-26 | 2023-06-30 | 无锡普天铁心股份有限公司 | Method for reducing iron loss of oriented silicon steel |
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Open date: 20090121 |