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

-----

Black steel

kindly providing me a suggestion for converting cold rolled sheet(low carbon steel) into black steel sheet without any painting and coating as well.

Ajeet Anand
product designer - Allahabad,(u.p.)&India
February 24, 2011

Hi, Ajeet.

I think you are looking for what is called "black oxidizing" in the USA. In India I think it is often called "blackodizing". It consists essentially of immersion in a hot aqueous oxidizing solution like caustic and nitrates. Search this site for "black oxide" and you will find a good deal of info on the process. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
February 25, 2011

Hi AJIT,

I think hot annealing the cold rolled sheets in hot furnace with carbon black feed stock oil result in black sheet.

RAJESH OJHA
- JODHPUR, RAJASTHAN, India
April 21, 2011

(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: