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
-----

Normalized 1008 steel, post induction braze - blistering zinc chromate

We're performing an induction 1008 steel braze with a copper ring in Nitrogen atmosphere for the past 2 years. We've recently elected to do a normalizing operation at 1600 °F for 10 minutes to relieve forming stress from an earlier operation, prior to sending these parts for a zinc trivalent electroplate per ASTM B633 T3.

Problem is we're getting seeing blistering around the heat affected zone that hasn't come up from previous years of production without the normalize. Any idea's?

Dale Thomas
Buyer - Burlington, Ontario, Canada
April 30, 2009

(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: