-- The Home Page of the Finishing Industry

on this site
current topics

60,000 Q&A topics -- Education, Aloha, & Fun

topic 8336

Blister Causes


My company supplies die cast aluminum parts for chrome plating. The primary material is SAE 413. The parts are typically belt sanded to remove gates and feeders. Then they will go through a buffing process. Typically manual and also automated using many racks and robot buffers. They then get chrome plated. Note that copper buff is not used. It is a copper strike.

The primary defect present (attributed to the casting) is blisters. This was predominant on a single product and over the course of the past few months has expanded to virtually all of the products that are plated. I am curious what you think may be a list of causes for this particular defect.

Please note that the blisters do not always penetrate to the cast surface. Others do appear over small pits in the casting.

Additionally - is it possible to visually determine any of the causes you may list?

Thank you for your time and consideration.

Jay Standish
- Franklin Park, Illinois, USA

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental Compliance

©1995-2020, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.