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Surface Finish for Tungsten Disulfide Impinge Blasting

Discussions about vibratory finishing processes, equipment and techniques.

Surface Finish for Tungsten Disulfide Impinge Blasting

Postby bmech211 » Thu Aug 27, 2015 11:48 am

Greetings board members:

I am in the process of treating internal engine parts with a variety of coatings, one of which is 0.5 micron Tungsten Disulfide. I am using the MIL-SPEC as my application guide, and it states that the parts must be treated with 5 micron aluminum oxide powder prior to impinge blasting.

I would like to know if I can mix the powder with crushed walnut shells and tumble the parts that will be coated? They are all a mix of aluminum (pistons) and alloy steel (cam sprockets, hubs, spline shafts, etc.).

Thanks in advance for the feedback.
bmech211
 
Posts: 1
Joined: Thu Aug 27, 2015 11:34 am

Re: Surface Finish for Tungsten Disulfide Impinge Blasting

Postby emkayss » Thu Aug 27, 2015 3:14 pm

A 5 micron size is equivalent to about a 1200 Mesh Aluminum Oxide Grit. This can be blended with Walnut Shell Grit but not sure of the results as I am unfamiliar with your application.
Steve
sschneider@KramerIndustriesOnline.com
emkayss
 
Posts: 217
Joined: Mon Mar 24, 2003 9:16 pm


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