Stamping is an efficient production method, the use of composite mold, especially the multi-position progressive die, in a press to complete multiple stamping process, to achieve by the strip unwinding, leveling, blanking to forming, finishing the whole Automatic production. High production efficiency, good working conditions, low production costs, generally can produce hundreds of pieces per minute. The purpose of the forming process is to make the sheet without plastic deformation under plastic deformation conditions, the desired shape and size of the workpiece. In actual production, often a variety of processes integrated application of a workpiece. Blanking, bending, shearing, drawing, bulging, spinning, straightening are several major types of stamping jobs.
Casting is a metal molding obtained by various casting methods, that is, smelting a good liquid metal, pouring, injection, suction or other casting methods into a pre-prepared mold, after cooling through the sand, cleaning and after Treatment, etc., the resulting shape with a certain size and performance of the object.