汽车零部件电泳涂装前处理常见问题分析  

Analysis on common problems existing in pre-treatment of automobile components and parts for electrophoresis coating

作　　者：荣光[1] 孙少朋[1] 赵德勇[2] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030 [2]烽火通信科技股份有限公司,湖北武汉430000

出　　处：《电镀与涂饰》2008年第6期51-53,共3页Electroplating & Finishing

摘　　要：对汽车零部件电泳涂装前处理常见的问题(如通道抽风不良、输送故障及串槽等)进行了分析。指出通道抽风不良易导致槽体温度升高、湿度增大,从而造成工件锈蚀;输送故障的发生导致工件在磷化槽中停留时间过长,使工件表面产生浮膜;表调槽串槽会导致磷化游离酸降低,磷化沉渣增多。提出了相应的解决措施。Common problems existing in pretreatment of automobile components and parts for electrophoresis coating, such as poor ventilation, transportation trouble and drag-out from one bath to another, were analyzed. It was noted that workpiece become rusted because of channel＇s bad ventilation, which leads to tank body＇s temperature and humidity increase; floating film is formed on the surface as a result of transportation trouble, bringing about a long time resting of workpiece in phosphating tank; low content of free acid in phosphating bath and more residue formation during phosphating because of drag-out from the tank containing surface conditioning agent to phosphating tank. Their corresponding solutions were presented.

关 键 词：汽车零部件 电泳涂装 前处理 磷化 

分 类 号：TG178[金属学及工艺—金属表面处理] TQ639.1[金属学及工艺—金属学]