For the sake of discussion, how does the sintering process alone create a case hardness. Sintering or the practice of molding powdered metal at or near its melting point, maintains metal purity and grain structure and offers the ability of at or near finished dimensions as cast. The process as I understand it only describes the shaping process and not necessarily the treating or hardening process. I am no metalurgist, just curious as to how the two, molding and hardness, correlate.
Thanks
Fish