公开(公告)号：US5961744A

公开(公告)日：1999-10-05

申请号：US449185

申请日：1995-05-24

申请人： Shuichi Yamazaki ,  Hiroyasu Fujii ,  Takeo Nagashima ,  Yoshiyuki Ushigami ,  Osamu Tanaka ,  Katsurou Kuroki ,  Hiroaki Masui

发明人： Shuichi Yamazaki ,  Hiroyasu Fujii ,  Takeo Nagashima ,  Yoshiyuki Ushigami ,  Osamu Tanaka ,  Katsurou Kuroki ,  Hiroaki Masui

IPC分类号： C21D8/12 ,  C23C8/18 ,  C23C8/80 ,  C23C22/74 ,  H01F1/147

CPC分类号： H01F1/14783 ,  C21D8/1288 ,  C23C22/74 ,  C23C8/18 ,  C23C8/80 ,  C21D8/1244 ,  C21D8/1277 ,  C21D8/1294

摘要： Grain oriented silicon steel sheet on which is formed an insulating coating having a thickness that is not less than 2.5 .mu.m that imparts tension to the steel sheet which does not have an inorganic mineral layer formed during a final annealing step (glass film) and a method of forming on grain oriented silicon steel sheet an insulating coating that is not less than 2.5 .mu.m thick and which imparts tension to the steel sheet which does not have the inorganic mineral layer (glass film) that forms during finish annealing, and a method of forming a tensioning insulating coating on grain oriented silicon steel sheet which has been finish annealed and does not have an inorganic mineral surface layer (glass film), after first forming a layer of SiO.sub.2 not less than 0.001 .mu.m thick on the oriented silicon steel sheet.

摘要翻译： 晶粒取向硅钢板上形成有厚度不小于2.5μm的绝缘涂层，其对最终退火步骤（玻璃膜）中形成的无机矿物层的钢板施加张力，并且 在晶粒取向硅钢板上形成不小于2.5μm的绝缘涂层，并且对最终退火时形成的无机矿物层（玻璃膜）的钢板施加张力的方法以及方法 在已经完成退火并且不具有无机矿物表面层（玻璃膜）的晶粒取向硅钢板上形成张紧绝缘涂层，首先在取向硅钢上形成不小于0.001μm的SiO 2层 片。