非标螺栓的表面处理工艺
发布日期：2020-10-20 14:41:15
非标螺栓的表面处理种类：
表面处理即是通过一定的方法在工件表面形成覆盖层的过程，其目的是赋以制品表面美观、防腐蚀的效果，进行的表面处理方法都归结于以下几种方法：
1、电镀：将接受电镀的部件浸于含有被沉积金属化合物的水溶液中，以电流通过镀液，使电镀金属析出并沉积在部件上。一般电镀有镀锌、铜、镍、铬、铜镍合金等，
有时把煮黑（发蓝）、磷化等也包括其中。
2、热浸镀锌：通过将碳钢部件浸没温度约为510℃的溶化锌的镀槽内完成。其结果是钢件表面上的铁锌合金渐渐变成产品外表面上的钝化锌。热浸镀铝是一个类似的过程。
3、机械镀：通过镀层金属的微粒来冲击产品表面，并将涂层冷焊到产品的表面上。
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