Hardening Patent for 316L 1

[gciriani]

Has anybody heard of a patent by Air Water Inc., Japan, to harden stainless steel 316L to 900 HV for a depth of about 20-30 micrometers? I am working with a subcontractor, but I'm having problems to eliminate defects, or crystal protrusion.

 

[ijzer]

There is an article in the latest NiDi magazine about it.
See

http://www.nickelmagazine.org/0304/5a.htm