桥机厂生产的轨道汽车在车棚前面装有镀铬的保险杠,要求电镀质量较高:没有气孔,镀层均匀发亮,使用时期长而不生锈。由于厂内镀铬设备建成时间不长,技术力量较差,因此,质量没有过关,镀出的保险杠上针孔较多,镀层发亮度不够,用不多久即开始脱落生锈。影响镀铬质量的因素很多,例如:酸洗去锈、抛光打磨、镀液配比、电流大小、温度、时间等等。我们首先从选择电流大小入手,除提高打磨质量外,配比、温度、时间等因素不变,运用 The track car produced by Bridge Machine Factory is equipped with chrome bumper in the front of the carport, which requires high plating quality: no air holes, uniform coating and bright, long-term use without rust. As the factory chrome equipment is not completed for a long time, poor technical strength, therefore, the quality of no clearance, plated bumper more pinholes, coating brightness is not enough, with soon began to shed rust. Factors affecting the quality of chrome plating, for example: pickling to rust, polishing, plating ratio, current size, temperature, time and so on. We first start with the choice of current size, in addition to improve the quality of grinding, the ratio, temperature, time and other factors remain unchanged, the use of