锌铝镁电机壳典型表面缺陷分析及控制  

Analysis and Control of Typical Surface Defects in Zinc Aluminum Magnesium Motor Shells

作　　者：任振远 李建英 韩冰 王言峰 姜嘉玮 邵延泽 Ren Zhenyuan;Li Jianying;Han Bing;Wang Yanfeng;Jiang Jiawei;Shao Yanze(Tangshan Iron and Steel Group High Strength Automotive Plate Co.,Ltd,Tangshan Hebei 063000,China)

机构地区：[1]唐山钢铁集团高强汽车板有限公司,河北唐山063000

出　　处：《山西冶金》2024年第9期177-180,共4页Shanxi Metallurgy

摘　　要：针对锌铝镁电机壳产品麻点、弧形条纹、锌层裂纹三种典型表面缺陷进行系统分析,对表面、截面位置进行扫描电镜分析,找到缺陷形成原因,制定改善措施。麻点缺陷为锌渣;弧形条纹缺陷为钝化过程中涂敷辊表面车削纹印到带钢表面形成竖道条纹所致;锌层裂纹缺陷为钢质内存在夹杂物所致。制定改善措施后,电机壳合格率显著提升。A systematic analysis was conducted on three typical surface defects of zinc aluminum magnesium motor shell products:pitting,arc-shaped stripes,and zinc layer cracks.Scanning electron microscopy analysis was performed on the surface and cross-sectional positions to identify the causes of defects and develop improvement measures.The pitting defect is caused by zinc slag,the arc-shaped stripe defect is caused by the turning marks on the surface of the coating roller during the passivation process,forming vertical stripes on the surface of the strip steel,and the zinc layer crack defect is caused by the presence of inclusions in the steel.After implementing improvement measures,the qualification rate of the motor shell has significantly increased.

关 键 词：锌铝镁 电机壳 麻点 弧形条纹 锌层裂纹 

分 类 号：TG174.44[金属学及工艺—金属表面处理]