镁铝合金表面处理简介

鎂鋁合金表面處理簡介

Introduce the Surface Processing of the Alloy of Magnesium and Aluminum

∙鎂鋁合金材質特性

∙Characteristic of the alloy of MG and AL

鎂是一種非常活潑之元素，相對的其材質本身亦非常易生銹蝕，因此必須仰賴表面處理來保護其本身之材質。

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

surface processing to protect it.

∙金屬材質表面處理項目

∙Item of mental surface processing

1.鉻系皮膜處理與塗裝

Phosphating filming and coating of chromium series

2.非鉻系皮膜處理與塗裝

Phosphating filming and coating of not chromium series

3.電鍍鎳處理

Electroplated nickel processing

4.電鍍鉻處理

Electroplated chromium processing

5.電鍍18K金處理

Electroplated 18K gold processing

6.陽極處理與染色

Plating and dyeing

鎂鋁合金表面處理項目之說明與檢驗方式

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

1.鉻系皮膜處理Phosphating filming of chromium series

a.說明instruction：

（1）鉻系皮膜處理是目前最為普遍處理之方式亦為最安定、最成熟之處理方式，惟其原料特性具毒性，因此在未來幾年內會禁止使用。其流程請參考圖表。

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）注意事項：＜註＞若需要表面塗裝時，請務必注意其塗裝製程是否有破壞到其表面之皮膜層，因其表面皮膜層最重要的是防止銹蝕，而其最重要的是當作鎂合金與塗料之介質使密著性會更好，因此塗裝時不能有破壞皮膜之現象發生。

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.檢驗方式check manner：

（1）電阻值：皮膜表面其電阻值＜0.3Ω，以三用電表檢測之。

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

（2）塗裝密著性：指皮膜處理後，再塗裝、以有格刮刀分割為100格並以3M610膠帶測試98%以上，不能有剝落現象。

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）耐蝕性：以鹽霧測試機檢測皮膜層與塗裝層，最基本皮膜層必須超過24小時98%無腐蝕現象，而塗裝層則必須超過96小時以上98%無腐蝕現象，才視之為合格。

Corrosion resistance:

2.非鉻系皮膜處理與塗裝Phosphating filming and coating of not chromium series

其特性與鉻系是類似的，除了具有非毒性外其檢驗方式與處理方式皆與鉻系相同，因此請參考鉻即可。

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

chromium .

a.說明instruction：

此項處理為最新發展之處理，目前只有美國方面發展出來，電鍍材料本公司亦於83年12月完成配方’，其特性是導電性非常好，電阻值可小於0.05Ω以下，並具有耐蝕性。

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.檢驗方式check manner：

（1）電阻值：鍍層表面電阻值＜0.05Ω以精密電表測之。

Resistance value: when resistance value to cladding material < 0.05Ω, examined by accurate galvanometer.

（2）密著性：以有格刮刀分割為100格，並以3M610膠帶測試，不得有剝落現象產生。Adhersion: it will not peel off coating then cut 100 cross with a scraper and check with 3M610 adhesive tape.

（3）耐蝕性：以鹽霧測試機檢測鍍層，其至少要24小時以上鹽霧測試通過，才視之為合格。Corrosion resistance:check cladding material with salt test machine , the test pass at least 24 hours later , then it is qualified .

∙電鍍鉻處理Electroplated chromium processing

a.說明：此項處理，是在電鍍鎳上面加上一層鍍鉻處理，可使鎂合金鍍件更加亮

麗、美觀。

a.instruction:the process is adding a tier of electroplated chromium on the

electroplated nickel, it will make the electroplate of Mg alloy more gorgeous and

more beautiful .

b.檢驗方式：與電鍍鎳相同。

b.check manner : the same as electroplated nickel’s

∙電鍍18K金處理Electroplated 18K gold processing

a.說明：此項處理，是在電鍍鎳上面加上一層鍍鉻處理，可使鎂合金鍍件更有價