无取向硅钢消除应力退火后粘结影响因素研究  

Study on the Influence Factors of Bonding of Non-oriented Silicon Steel after Stress Relief Annealing

作　　者：陈祥 林媛[1] 张文康[1] CHEN Xiang;LIN Yuan;ZHANG Wenkang(Technology Centre of Shanxi Taigang Stainless Steel Co.,Ltd.,Taiyuan 030003,China)

机构地区：[1]山西太钢不锈钢股份有限公司技术中心,太原030003

出　　处：《电工材料》2022年第3期9-12,共4页Electrical Engineering Materials

基　　金：新能源汽车驱动电机用硅钢工艺技术开发(山西省科技重大专项20191102004)。

摘　　要：以某压缩机电机铁芯用无取向硅钢为研究对象,探讨冲裁毛刺大小、表面涂层厚度、表面粗糙度、力学强度、消除应力退火温度及气氛等因素对退火后粘结的影响。利用激光共聚焦显微镜分析表面粗糙度,采用SEM观察研究涂层的表面形貌及成分。结果表明:粘结是由边缘毛刺退火后相互勾连所致;涂层厚度越薄,退火后粘结越严重;在一定的范围内,粘结程度随着表面粗糙度增大而减小,随着退火氧化气氛比例及退火温度升高,粘结程度增加;相同牌号力学强度越低,冲片毛刺越大,退火后层间粘结越严重。The non-oriented silicon steel used for the iron core of a compressor motor is taken as the research object, the effects of blanking burr, surface coating thickness, surface roughness, mechanical strength, stress relief annealing temperature and atmosphere on bonding after heat treatment were studied.The surface roughness was observed by laser focusing microscope,the surface morphology and composition of the coating were studied by SEM. The results show that the bonding is caused by the edge burr joining each other during annealing. the thinner the coating thickness, the more serious the adhesion after heat treatment. In a certain range, the bond degree decreases with the increase of surface roughness. With the increase of annealing atmosphere and annealing temperature, the bonding degree increases after heat treatment. The lower the mechanical strength of the same brand, the larger the burr, the more serious the interlayer bonding after heat treatment.

关 键 词：无取向硅钢 粘结 毛刺 表面粗糙度 力学强度 

分 类 号：TG174.4[金属学及工艺—金属表面处理]