Clean And Smut Free Finish
Birchwood® Technologies Introduces Tru Temp® Stainless Black Oxide For Clean And Smut Free Finish
A two-stage chemical reaction is used to create the new TRU TEMP® Stainless Black Oxide finishing process. The reaction starts with an activation step using a diluted muriatic acid solution.
The surface of the stainless steel is then subjected to oxidation, resulting in a uniform black coating that can be sealed with the proper rust-prevention topcoat for the best possible appearance and corrosion resistance.
When applied to stainless steel parts, TRU TEMP® Stainless Black Oxide for stainless steel creates a black magnetite finish. It is useful for finishing series 200, 300, 400, and 17-4 pH stainless steel. TRU TEMP® produces a protective black finish that is - 0.000020” (1 micron) thick, and it has a hot black oxide-like satin black appearance.
Operating effectively at 200° to 210° F, TRU TEMP® Stainless finishes parts at much lower temperature than traditional hot black oxide that operates at 250-260° F. What’s more, is that TRU TEMP® Stainless uses zero chrome in the formulation unlike other competitive stainless finishes.
Additionally, TRU TEMP® Stainless uses 30-40% less caustic content than other finishes, making TRU TEMP® a more user-friendly and environmentally friendly finishing option.
Finishing parts is fast and in the most common finishing line configuration completes the blackening in under an hour using a seven-step process which includes: clean, rinse, activation, rinse, blackening, rinse, and sealing. Alternate process designs, custom or automated finishing systems can be accommodated for most workflows.
TRU TEMP® Stainless finish makes it easy and fast to supply customers just-in-time requirements. By using an in-house finishing system, a company can achieve cycle time reductions, inventory reductions and overall process improvements.
ISO accountability is enhanced and TRU TEMP® Stainless meets compliancy initiatives including MIL-DTL-13924 Class 4 compliant.
To help shops evaluate TRU TEMP® Stainless for their parts, Birchwood Technologies offers free sample finishing. Visit the company website to request permission to use sample finishings.
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