No, Ed this is a liquid bath process, under tempering temperatures of tool steels. This process is done by Philos Technologies in Wheeling, IL. Check out: www.philostech.com
It's amazing stuff!!
No, I've tried Nitriding and made the tooling brittle. This method is Titanium diffusion. I accomplished this with finished tooling. With Nitriding, had to refit tooling, afterward.
I worked as a engineer for the forging industry and came across a technology that will diffuse Titanium into tool steel substrate, H13 @ 46-48 Rc, and produce a 75 Rc surface, .005-.006 deep. This is done to finished, ready for production tooling. Does not change dimension or distort the finish...
