Sandblasting Media for Casting Zamak #3

Dear Sir,

Please try with SA 2 1/2 copper slag as blasting material.

Regards

P S CHOWDARY

Hello Fisher Yu,

I'm not completely clear. Sorry. When you say, "Customer asks to do sandblasting for the casting Zamak #3 components to get uniform texture after chrome plating."

Is this, "...sandblasting for the casting Zamak #3 components...," supposed to be smoothing the finish in order to get a uniform texture in *prepration* for the chrome to follow, which needs a smooth enough surface on which to plate?

Or, is it for polishing the chrome plated surface after (or do you do 'some before,' and some after')?

Thanks.

-- Rob

Hello Rob,

First, the components should be chrome plated.

Second, customer expects texture on the product. They don't care which kind of texture but asks it is consistent. They just note "sandblasting before chrome plating" in the drawing.

Third, polishing process is not availiable because the complex profile of the components and we can not ensure the uniform smoothness.

Thanks.

Fisher