Summary for cold blackening alternatives Discussion
cold blackening alternatives are the main suggestion in this thread for replacing hot black oxiding on steel tooling. Niranjan Kumar asks for a cold process that can provide a similar black color and about 80% of black oxide’s properties at a comparable cost, and wonders whether Teflon coating might be the answer. The reply points him to the FAQ on Black Oxide and Cold Blackening and says these cold blackening alternatives are probably competitive with black oxide on a total-cost basis. However, the answerer notes they are not quite as good as true black oxide, even though they can satisfy many black oxide requirements while avoiding the hazards of the hot process. No specific Teflon recommendation is given, and the discussion leans toward cold blackening rather than a different coating system.
Q. We use Black Oxiding for most of the tooling we design and I wish to know any new method other than Black oxiding which can serve the purpose of this operation. Any coating which can come close to BO process also may be suggested and will try to this and inform the same. We are looking for an alternative cold process giving any colour coating to be close by 80% to black Oxiding properties on steel. Cost should also be comparative. Is Teflon coating the solution for the coating process? We are trying to experiment and if you could help us we will do the sample and send this to you for your advice.
Niranjan Kumar
Tool Design – Hyderabad, Andhra Pradesh, India
2004
A. Please see our FAQ on Black Oxide and Cold Blackening. These cold blackening alternatives, on a total cost basis, are probably competitive with black oxide. Personally, I feel they are not quite as good, but they meet many black oxide requirements without the dangers of the hot process.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2004
A. First tell us why you want to go away from the black oxide process and then we might be able to suggest alternatives. Having some idea of what you are tryin to accomplish with the coating would certainly help also.
James Watts
– Navarre, Florida
2004