Coatings for forging dies
10-30-2006, 03:32 PM,
Coatings for forging dies

I would like to know if there are any coating that can be used in hot forging dies. Can i use MCrAly coatings in order to prevent thermal fatigue? Is there any surface treatment that support/resist to stresses(thermal + mechanical) invoveld in hot forging process?

Apologies for bad english

Thanks a lot
10-31-2006, 06:24 PM,
RE: Coatings for forging dies
Hi Marcio Matos dos Santos

Welcome to the Surface Engineering Forum.

My experience is a little lacking in this area, so I hope we have other members who will give their advice.

Thermochemical treatments like boriding, chromising and vanadium/niobium carbide diffusion processes come to mind as being potential candidates. MCrAlY coatings, though providing excellent high temperature oxidation resistance, I think will lack the strength, low friction and anti-adhesive welding characteristics required for this process.

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