早期,涂覆铜层之后,再涂一薄层光亮镍,然后传统的铬层位于最外层。
In the early days copper was normally followed by a relatively thin bright nickel layer with conventional chromium topcoat.
本文介绍的铜制件光亮酸洗钝化工艺,既无有毒的含铬物质,又无氮氧化物污染。
The no pollution bright pickling passivation technique of copper parts introduced in this pa-per, has neither the toxic chromium containing materials nor nitrogen oxide pollution.
对摩托车零件电镀采用预镀镍-半光亮镍-光亮镍-镍封-装饰铬的组合镀层工艺,能完全符合质量标准要求。
A coating combination of nickel strike, semi-bright and bright nickel, nickel sealing plus decorative chromium is suggested to provide motorcycle parts with the standard quality finish.
应用推荐