Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

Pitting problems on zinc parts

I work for a job shop grinding various parts robotically. My biggest problem is with zinc parts, little pits break out sometimes during the grinding process and also during the polishing process. The parts have to be ground because they are castings and have gate or parting line to remove. Does anyone know how to avoid the pitting problem?

Terry Woods
- Reading, PA, United States
2003

Buy a better grade of castings. Your pits are in the base metal and you are removing the skin which makes them visible.

James Watts
- Navarre, Florida
2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully 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 might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: