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
-----

301 Stainless Sheet Stock Flattening

November 21, 2012

Q. I am trying to flatten 301 stainless full hard sheet stock. Finished parts are 180mm x 280mm x 0.25mm thick. The specification requirement is to be under 0.1mm across the part. I have tried multiple stress relief attempts (300-400C) but have had not success. The sheets usually have from 0.5mm - 1.0mm of warp across the part.

Any ideas how to produce a flat part?

Thanks,
Curtis

Curtis Bailey
- Portland, Oregon, USA

December 6, 2012

A. Any thermal treatment is likely to cause warping of the parts. Pressing or other mechanical process introduces uneven stresses and also causes warping.
Photochemical machining introduces no stresses and leaves the part as flat as the original stock and leaves a burr free edge.

Geoff Smith
Hampshire, England

(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: