Introduction forging; Forging forging machine is a use to put pressure on the metal blank to produce plastic deformation in order to obtain a certain mechanical properties, a certain shape and size of the forging of processing methods, the two forging (forging and stamping) is one of the components . By forging can eliminate metal produced in the smelting process cast porosity and other defects, optimize the microstructure, and because the preservation of a complete metal flow lines, the mechanical properties of forgings generally better than the same material castings. Related mechanical load is high, the important parts grim working conditions, in addition to simple shapes available rolled sheet, profiles or welded parts, the use of forgings. Forging process: forging different methods have different processes in which hot forging process longest, usually order: forging billet cutting; forging billet heating; blank roll forging equipment; forging forming; trimming; punching; correction; intermediate inspection, size and surface defect inspection forgings; forging heat treatment, forging to eliminate stress, improve metal cutting; cleaning, mainly to remove surface oxide; correct; check the general appearance and hardness after forging to examination, it is important to go through the forging of chemical composition analysis, mechanical properties, residual stress testing and nondestructive testing.