非标螺丝发黑和镀黑锌有什么不同呢？-Non standard screws-Customized non-standard screws, electronic screws, and combination screws-Dai Mengde Precision Technology (Suzhou) Co., Ltd

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非标螺丝发黑和镀黑锌有什么不同呢？

Time：2020-11-28 02:57:09Visits：1246

非标螺丝发黑和镀黑锌有什么不同呢？

镀黑锌是电泳时，经导电后，将溶液中的电镀介质附着在非标螺丝上，镀层厚度约为3-20um，发黑是非标螺丝本身材料的化学变化，使非标螺丝表面材料氧化成钝化膜，钝化层厚度一般为3um左右。

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非标螺丝的定制流程是什么？

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