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Correcting Excessive Hardcoat Anodize Coating





July 9, 2010

I have a product which requires Hard Coat Anodize.
Outside Dia. of part only has a .001 tolerance.
I have just received an order back from a subcontracted plater, These parts are .0002 to .0003 over size on the O.D. (This is not a deviateable dim.)
Anyone know of a method to remove such a small amount retaining a 32 micro-inch surface finish? While also maintaining appearance.

Thanks for any help.

Scott Jonas
Quality / job shop - Anderson, South Carolina



July 16, 2010

Scott,

Honing or lapping can be used to remove very small amounts of material and will actually improve the surface finish rather than be detrimental to it.

Brian Terry
Aerospace - Yeovil, Somerset, UK



August 16, 2010

Using your deoxidizer may be your best bet on removing little surface and cutting way back on your etching time. Make sure an etch rate is done before doing this so you know how long to leave your strip part in without removing to much material.

Jennifer Curry
- FWB, Florida, USA


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