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topic 10382

Mirror polishing stainless steel balls


Our client requires stainless steel balls to be mirror polished. The balls are of 28.575 mm. We achieved the mirror polish in vibratory barrel.We used plastic media and then corncorb with special paste. However though we achieved the polish, we got a lot of scratches on the surface. The balls are probably getting scratched in corncorb. Can you suggest some method for mass polishing of these balls which can achieve mirror finish without scratches.

Premal Mehta
- Mumbai


I think you may want to see my answer to question #10355. In fact you maybe working for same company. Anyway, if none of the suggestions I gave for that answer work for you, there are a few basics you might want to remember. You can not get a finer surface finish than the largest particle or grain size in your media, unless the specific gravity or molecular structure (friability of media structure) of that media is a lot less than the material being worked. The ideal situation is to have a good balance of parts to media or proportionate to specific gravities of materials being worked. Simple translation, probably more media is required to balance out weight of parts to stop part on part contact.

tony kenton
AF Kenton
Hatboro, Pennsylvania

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