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Require formula for making cold bluing/black oxide liquid

HELLO I REQUIRE A FORMULA FOR A SUCcESSFUL COLD BLUING LIQUID, FOR BLACK OXIDING FERROUS COMPONENTS I BUILD, ALSO A SEALER FORMULA WHICH PREVENTS RUSTING AFTER BLUING.

TIM SWAIN
- STH AUCKLAND, NEW ZEALAND
2006

You'll find some introductory and general material in the Metal Finishing Guidebook, Tim. Searching expired patents, which is free & fast today, will offer additional specifics.
But asking for a "successful" formulation for a commercial product is rather like asking for the formulation for Coca-Cola or the shop drawings for a Lexus; people sell their formulations as proprietary trade secrets to recoup their research investment. Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2006

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