Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Hard anodizing on LM6 Aluminum sand casting part

We are using one part made out of LM6 ALUMINUM ALLOY by sand casting process. This is subsequently hard anodized.This part is used in the machine at 4 to 8°C.We observe that after few hours of operation there is white powder appears from the pores. This is typically like "white chalk". Could you please let us know how to avoid this white chalk formation?

Regards,

NITIN MOTILAL KOTHARI
Medical Devices manufacturing - Mumbai, INDIA
2006

(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: