The invention relates to a mechanical-assisted chemical heat treatment method for
metal surfaces. The method comprises the following steps that 1, a
metal workpiece substrate to be subjected to chemical heat treatment is pretreated; 2, a chemical heat treatment
electrode is prepared; 3, chemical heat treatment equipment is assembled; 4, chemical heat treatment preparation is conducted; and 5, the
metal workpiece substrate to be subjected to chemical heat treatment is ground and polished. The mechanical-assisted chemical heat treatment method for metal surfaces has the advantages of being simple in equipment, low in investment, and low in maintenance and
machining cost; a strengthened layer is mainly of a
solid solution structure, and is compact, uniform and high in quality; the strengthened layer and the substrate are subjected to metallurgical bonding, and are free of obvious interfaces and high in bonding force; chemical heat treatment and
grinding are conducted at the same time, the surface
polishing effect of low
surface roughness and high smoothness can be achieved, and secondary
machining such as
polishing and deburring is not needed; no special requirement for the shape and precision of workpieces exists, treatment of thin-walled parts made of composite materials can be achieved, and applicability is high; and operation is easy and feasible, efficiency is high, and the mechanical-assisted chemical heat treatment method can be used for large-scale treatment of the workpieces.