In industrial production, various kinds of moulds and tools are obtained by injection, blow moulding, extrusion, die casting or forging, smelting and stamping. In short, the mould is a tool used to make moulding objects. 

This tool is composed of various parts, and different moulds are composed of different parts. It mainly realizes the processing of the shape of the articles by changing the physical state of the formed material. Known as the "mother of industry"

Under the action of external force, the billet becomes a tool with specific shape and size. It is widely used in stamping, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, as well as engineering plastics, rubber, ceramics and other products of compression or injection molding. The die has a specific contour or inner cavity shape, and the blank can be separated according to the contour shape (blanking) by applying the contour shape with the edge. 

The shape of the inner cavity can be used to obtain the corresponding three-dimensional shape of the blank. The mold generally consists of two parts, the movable die and the fixed die (or punch and concave die), and the two parts can be divided into two parts. When separate parts are removed, the blank is injected into the mold cavity to form.

Mould is a precise tool with complex shape and bearing the bulging force of billet. It requires high structural strength, stiffness, surface hardness, surface roughness and processing accuracy. The development level of die production is one of the important marks of the level of mechanical manufacturing.

Link to this article： Introduction of mould

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