Industrial production for injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods to obtain the required products of various molds and tools. In short, the mold is used to shape the items of the tool, this tool consists of a variety of parts, different molds from different parts. It is mainly through the molding material to change the physical state to achieve the shape of the processing of goods. Known as the "mother of industry" title.
Under the action of external force to make the blank into a specific shape and size of the parts of the tool. Widely used in punching, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, and engineering plastics, rubber, ceramics and other products of the compression molding or injection molding process. The mold has a specific profile or cavity shape, and the application of a profile with a cutting edge allows the blank to be separated (blanked) by contour shape. Application of the cavity shape allows the blank to obtain the corresponding three-dimensional shape. Mold generally includes dynamic and fixed mold (or punch and die) two parts, the two can be divided into. Separate the parts removed, close the blank when the mold into the mold cavity forming. The mold is a precision tool, the shape of complex, bear the blank of the expansion force, the structural strength, stiffness, surface hardness, surface roughness and processing accuracy have a higher demand for mold production level of development is one of the important indicators of the level of machinery manufacturing.
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