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How to do two-layer / two-color powdercoat

May 25, 2009

Dear Sir:

Could you please advise how to applied two different color on metal substrate?One color is yellow and another is clear coat.The products comes out of our curing oven becomes ugly.

Thanks,David

David Wei
sales - Xiamen,Fujian, China

I smiled... I had not heard of powder being ugly. However, sounds like you need to lower the Kv of the gun down to 40-45 Kv for the second coat. Original mfgr. of alloy wheels will use three coats of powder (without any problems) to achieve the desired finish... primer, aluminium and final coat of clear. A photo of the ugly powder may help readers to offer alternative options to overcome this defect in the powder film.

Terry Hickling
Birmingham, United Kingdom
May 27, 2009

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