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公开(公告)号：US20210101230A1
公开(公告)日：2021-04-08
申请号：US16496541
申请日：2018-01-24
发明人： Meihong WU , Zipeng ZHAO , Guobao LI , Kanyi SHEN , Zhuochao HU , Chen LING , Huande SUN , Huabing ZHANG
IPC分类号： B23K26/364 , C22C38/02 , B23K26/359 , B23K26/40
摘要： A grain-oriented silicon steel with low iron loss, wherein the silicon steel is provided with a plurality of grooves on its surface, each of the grooves is 10-60 μm in width and 5-40 μm in depth, and the spacing between adjacent grooves is 1-10 mm. The manufacturing method therefor comprises: scoring the surface of the grain-oriented silicon steel with low iron loss by using a laser in order to form the grooves. The grain-oriented silicon steel with low iron loss can maintain the magnetic domain refining effect in a stress-relief annealing process, and avoid the introduction of more residual stress.
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公开(公告)号：US20240071661A1
公开(公告)日：2024-02-29
申请号：US18259898
申请日：2022-01-11
发明人： Meihong WU , Guobao LI , Shuangjie CHU , Zipeng ZHAO , Baojun LIU , Kanyi SHEN , Yongjie YANG , Zhuochao HU , Yaming JI , Chen LING
IPC分类号： H01F1/18 , C21D1/18 , C21D1/84 , C21D6/00 , C21D8/12 , C21D9/52 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06
CPC分类号： H01F1/18 , C21D1/18 , C21D1/84 , C21D6/005 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/125 , C21D8/1255 , C21D8/1261 , C21D8/1266 , C21D8/1283 , C21D9/52 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , B23K26/362 , C21D2201/05 , C22C2202/02
摘要： A manufacturing method for low-magnetostrictive oriented silicon steel is provided, wherein the oriented silicon steel comprises a silicon steel substrate and an insulating coating on the surface of the silicon steel substrate. The manufacturing method comprises: performing single-sided laser etching on the silicon steel substrate, wherein the side of the silicon steel substrate, on which single-sided laser etching is performed, is a first surface, and the side opposite to the first surface is a second surface; determining a deflection difference between the first surface and the second surface based on the power of the laser etching, and determining a difference in the amount of the insulating coatings on the first surface and the second surface based on the deflection difference; and forming insulating coatings on the first surface and the second surface. The amount of the insulating coating on the second surface is greater than that on the first surface, and the amount of the insulating coating on the first surface and that on the second surface satisfy the difference in the amount of the insulating coatings. By using the manufacturing method in the present invention, the problem of a relatively large magnetostrictive deviation between two sides of oriented silicon steel caused by single-sided laser etching can be solved. Oriented silicon steel manufactured by the aforementioned manufacturing method is also provided. A transformer iron core prepared using the oriented silicon steel enables a transformer to have low noise during operation.
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公开(公告)号：US20150302962A1
公开(公告)日：2015-10-22
申请号：US14646985
申请日：2012-12-11
发明人： Guohua YANG , Xiandong LIU , Guobao LI , Yongjie YANG , Zhuochao HU , Hongxu HEI , Jun ZHANG , Dejun SU , Huande SUN , Meihong WU
IPC分类号： H01F1/147 , C21D9/46 , C21D6/00 , C23C8/02 , C23C8/26 , H01F41/02 , C22C38/02 , C22C38/06 , C21D3/04 , H01F1/16 , H01F1/18 , H01F41/32 , C21D8/12 , C22C38/00
CPC分类号： H01F1/14775 , C21D1/26 , C21D3/04 , C21D6/008 , C21D8/1216 , C21D8/1222 , C21D8/1233 , C21D8/1255 , C21D8/1261 , C21D8/1283 , C21D9/46 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C23C8/02 , C23C8/26 , C23C8/80 , H01F1/14783 , H01F1/16 , H01F1/18 , H01F41/02 , H01F41/32
摘要： The invention discloses an oriented silicon steel with excellent magnetic properties and a manufacturing method thereof. The present invention obtains the oriented silicon steel with excellent magnetic properties by controlling the area ratio of small crystal grains of D
摘要翻译： 本发明公开了一种磁性优异的取向硅钢及其制造方法。 本发明通过将取向硅钢成品中的D <5mm的小晶粒的面积比控制在3％以下，得到具有优异磁性的取向硅钢，并且控制比例μ17/μ15 磁导率在1.7T和1.5T的磁感应取向硅钢成品中为0.50以上。 此外，通过使用具有适当部件的定向硅钢板和优化的冷轧工序，本发明有效地降低了板坯的加热温度及其制造成本，同时更好地控制了晶体的尺寸和比例 定向硅钢成品中的晶粒和磁感应的一定范围内的磁导率，确保二次再结晶具有良好的高斯织构取向，最终稳定地获得具有优良磁性能的取向硅钢产品。
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