black passivation

常见例句

The bath compositions of trivalent chrome black passivation for zinc-iron alloy coating were optimized by orthogonal test method.
采用正交试验法对锌-铁合金镀层三价铬黑色钝化工艺进行优化，并研究了工艺参数对钝化膜外观和耐蚀性等影响。
Our company environment-friendly products include: lead-free white copper tin, low-Co nickel-free black alloy, trivalent chromium plating, and trivalent chromium passivation series etc.
主要的环保优势产品：无铅白铜锡、低钴无镍枪色、代铬、三价铬镀铬、三价铬锌钝化。
The process flow and formulation of silver-salt black passivation of zinc electroplate were presented, and the functions of the different components in passivation solution were introduced.
给出了镀锌层银盐黑色钝化的工艺流程及配方，介绍了钝化液中各组分的作用。