Serious Education & the most FUN
you can have in metal finishing
No popups, spam, registration or passwords
on this site FORUM
Avoiding blackening during stainless steel welding
Q. What is the best way to avoid blackening of stainless steel surface during welding?
Fortuna Associates - Bangalore, India
A. Carbide precipitation occurs when stainless steel is heated to 1600 degrees. That is the separation of the chrome from the ferrite grains. In the normal welding process the process reverses upon quenching. If the metal cools too slowly the process will not reverse and the stainless will turn black. It will also rust. Try a lower welding temperature or faster travel speed or both.
- Grand Tower, Illinois, U.S.A.
If you have a question in mind which seems off topic, please Search the Site
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 ComplianceTesting Svcs. & Devices
How Google uses data when you visit this site.