Counter-flow spray technique for the treatment of the rinsing water containing pyrophosphates in Cu- Sn-Ni alloy plating is described.
电镀焦磷酸盐铜锡镍废水由“常流水”清洗方式改为反喷淋清洗方式。
A newly developed self fusion Cu-based Cu-Ni-Sn alloy powder and the PTA coating technology are described.
研制成功了一种新型铜基自熔性合金粉末，在高强度钢基体上采用等离子喷焊工艺制备焊层。
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