surface heat treatment
Surface heat treamtne is by heating the surface of the steel, cooling and changing the surface mechanical properties of meta heat treatment process. Surface hardening is the main content of the surface heat treatment.Its objective is to obtain a high hardness of the surface layer and favorable stress distribution, in order to improve the wear resistance and fatigue properties of the workpiece.
It is metal heat treatment process,to enhance work piece surface. It does not change the organization and performance of the work piece heart section.. It is widely used in work pices , both surface requires a high wear resistance, fatigue strength and a larger impact load, but also requires a whole has good ductility and toughness, such as crankshafts, camshafts, transmission gears.
Surface heat treatment is divided into two categories: surface hardening and chemical treatment