镁铝合金表面处理简介

镁铝合金表面处理简介

Introduce the Surface Processing of the Alloy of Magnesium and Aluminum

•镁铝合金材质特性

•Characteristic of the alloy of MG and AL

镁是一种非常活泼之元素，相对的其材质本身亦非常易生锈蚀，因此必须仰赖表

面处理来保护其本身之材质。

MG is an active element ,it is more rustied than others. So it must depend

on surface processing to protect it.

•金属材质表面处理项目

•Item of mental surface processing

1.铬系皮膜处理与涂装

Phosphating filming and coating of chromium series

2.非铬系皮膜处理与涂装

Phosphating filming and coating of not chromium series

3.电镀镍处理

Electroplated nickel processing

4.电镀铬处理

Electroplated chromium processing

5.电镀18K金处理

Electroplated 18K gold processing

6.阳极处理与染色

Plating and dyeing

镁铝合金表面处理项目之说明与检验方式

Instruction the Surface Processing of the Alloy of Magnesium and Aluminum and check mode

1.铬系皮膜处理Phosphating filming of chromium series

a.说明instruction：

（1）铬系皮膜处理是目前最为普遍处理之方式亦为最安定、最成熟之处理方式，惟其原料特性具毒性，因此在未来几年内会禁止使用。其流程请参考图表。

Phosphating filming of chromium series is the most universal process manner, also is the most stable and mature. Only does it’s materials have poison , it will be forbid to use. It’s process flow refer to the diagram.

（2）注意事项：＜注＞若需要表面涂装时，请务必注意其涂装制程是否有破坏到其表面之皮膜层，因其表面皮膜层最重要的是防止锈蚀，而其最重要的是当作镁合金与涂料之介质使密着性会更好，因此涂装时不能有破坏皮膜之现象发生。

Remarks: If the surface need coating , please be sure to notice if the coating process damage the surface film. Because the surface film the most important is prevent to rusting

b.检验方式check manner：

（1）电阻值：皮膜表面其电阻值＜0.3Ω，以三用电表检测之。

Resistance value: when resistance value to film surface < 0.3Ω, examined by three-purpose galvanometer.

（2）涂装密着性：指皮膜处理后，再涂装、以有格刮刀分割为100格并以3M610胶带测试98%以上，不能有剥落现象。

Coating adhesion: it will not peel off coating again then cut 100 cross with a scraper and check 98% products with 3M610 adhesive tape after phosphating filming.

（3）耐蚀性：以盐雾测试机检测皮膜层与涂装层，最基本皮膜层必须超过24小时98%无腐蚀现象，而涂装层则必须超过96小时以上98%无腐蚀现象，才视之为合格。

Corrosion resistance:

2.非铬系皮膜处理与涂装Phosphating filming and coating of not chromium series

其特性与铬系是类似的，除了具有非毒性外其检验方式与处理方式皆与铬系相同，因此请参考铬即可。

The characteristic is similar with chromium series’ ; besides it is poisonous the man ner of inspection and phosphating filming is the same with chromium series’ . so please refer to chromium .

a.说明instruction：

此项处理为最新发展之处理，目前只有美国方面发展出来，电镀材料本公司亦于83年12月完成配方’，其特性是导电性非常好，电阻值可小于0.05Ω以下，并具有耐蚀性。

Phosphating filming and coating of not chromium series is the newest process , now it is developed by America,the electroplate company finished the formula in December in 1983 ,it’s characteristic is having better electric conductivity,the resistance value may be little than 0.05Ω,and it is corrosion-resistant.

b.检验方式check manner：

（1）电阻值：镀层表面电阻值＜0.05Ω以精密电表测之。