case hardening

case hardening读音音标

英 [keis ˈhɑ:dəniŋ]

美 [kes ˈhɑrdnɪŋ]

case hardening意思解释

释义

表面硬化；

英英释义

Case hardening or surface hardening is the process of hardening the surface of a metal object while allowing the metal deeper underneath to remain soft, thus forming a thin layer of harder metal (called the \"case\") at the surface. For steel or iron with low carbon content, which has poor to no hardenability of its own, the case hardening process involves infusing additional carbon into the case.