A method for producing corrosion resistant, more resistant to wear workpieces made of high chromium hold strength steel and its use

摘要

Workpieces in high-chrome steel, e.g. valve spindles from power station valves, undergo treatment in gas or plasma to form a connecting layer on their surface. Connecting layer is pref. composed mainly of nitrides, together with C, S, P and/or other nonmetals. ADVANTAGE - Corrosion resistance w.r.t. graphite, wear resistance and temp. resistance are improved