Mechanical Finishing Clinic: Vibratory Finishing Process That Produces a Visual Blasted Finish

Ask an Expert From: Products Finishing, from MC Finishing

Posted on: 1/1/2017

Q. We are vibratory finishing an aluminum part and then blasting it to achieve a uniform pre-anodized finish. Can you recommend a process that can give a visual blasted finish in our vibratory machine to eliminate the blasting process?

Q. We are vibratory finishing an aluminum part and then blasting it to achieve a uniform pre-anodized finish. Can you recommend a process that can give a visual blasted finish in our vibratory machine to eliminate the blasting process? 

A. Vibratory finishing can produce a visual finish very close to the tight patterned satin reflective blasted finish. Certain vibratory medias, compounds and machines are required. 

The high-energy centrifugal barrel works best, but vibratory machines also get close. 

The two types of medias that work best in obtaining a blasted finish are a random shape 10- to 16-grit ceramic aluminum oxide media, or a smaller ¼ " to 3/8" polyester plastic cone or pyramid-shaped preformed media.

The random media works the best with both vibratory and centrifugal barrel machines and tends to lodge in holes. The smaller, pre-formed polyester media also works in a centrifugal barrel and vibratory processes. The vibratory compounds affect different surface brightness. 

 

 


Originally published in the January 2017 issue. 

 

 

Comments are reviewed by moderators before they appear to ensure they meet Products Finishing’s submission guidelines.
blog comments powered by Disqus


Learn More

Zones


Schaffner Mfg. Co., Inc.

Suppliers | Products | Experts | News | Articles | Calendar | Process Zones

The Voice of the Finishing Industry Since 1936 Copyright © Gardner Business Media, Inc. 2016

Subscribe | Advertise | Contact Us | All Rights Reserved