汽车底盘三角臂零件电泳后耐蚀性不良原因分析及对策  

Cause analysis on poor corrosion resistance of triangular arm parts used on automotive chassis after electrophoretic coating and countermeasures

作　　者：龙袁 蔡宁 赵青[3] 王鹏博 张衍 郭子峰 刘华赛 LONG Yuan;CAI Ning;ZHAO Qing;WANG Pengbo;ZHANG Yan;GUO Zifeng;LIU Huasai(Technology Research Institute of Shougang Group Co.,Ltd.,Beijing 100043,China;Beijing Key Laboratory of Green Recyclable Process for Iron&Steel Production Technology,Beijing 100043,China;Beijing Shougang Co.,Ltd.,Qian’an 064404,China)

机构地区：[1]首钢集团有限公司技术研究院,北京100043 [2]绿色可循环钢铁流程北京市重点实验室,北京100043 [3]北京首钢股份有限公司,河北迁安064404

出　　处：《电镀与涂饰》2022年第16期1176-1180,共5页Electroplating & Finishing

摘　　要：针对汽车底盘三角臂零件电泳后耐蚀性不合格的问题。通过对比三角臂焊接后正、反面的表面状态,磷化前后的表面形貌和元素组成,以及焊接模拟试验进行原因分析。结果发现,钢板涂油量过高是主要原因,改用涂油量为0.3~0.5 g/m^(2)的钢板后问题得以解决。In order to find out the cause of unqualified corrosion resistance of triangle arm parts on automotive chassis, the surface states of the front and back sides of triangular arm after welding, as well as the surface morphologies and elemental composition before and after phosphating were compared, and a simulated welding test was also conducted. It was found that the too high amount of oil coated on the surface of steel plate was the main cause. The problem was solved by reducing the oil amount to 0.3-0.5 g/m^(2).

关 键 词：热轧酸洗板 电泳 焊接 脱脂 磷化 耐蚀性 故障处理 

分 类 号：TQ151.7[化学工程—电化学工业]