Cemented carbide forging dies are also called forging dies, which have good heat resistance and fatigue resistance. They apply a certain extrusion force through the closing of the upper and lower dies, so that the die forgings can obtain better structure and mechanical properties. There are many types of cemented carbide forging dies, which are mainly classified according to manufacturing equipment. They can be divided into tire molds, hammer forging dies, machine forging dies, flat forging dies, and roll forging dies.
Tire mold: used on free forging equipment, suitable for small forgings, small and medium batch production;
Hammer forging die: Under the power of forging equipment, the blank is forced to plastic flow and form in the forging die boring, so as to obtain forgings with higher quality than free forging;
Machine forging die: On a mechanical press is a die for forming a blank into a die forging or its semi-finished product;
Flat forging die: a die for forming a blank into a die forging or its semi-finished product on a horizontal forging machine;
Roll forging die: a fan-shaped die for longitudinally rolling the blank on a roll forging machine, which is 5-10 times higher than the hammer forging die.
Compared with castings, metal can improve its structure and mechanical properties after forging. After the casting structure is deformed by the forging method due to the deformation and recrystallization of the metal, the original coarse dendrites and columnar grains become the equiaxed recrystallized structure with finer grains and uniform size, which makes the original segregation in the steel ingot, The compaction and welding of looseness, pores, slag inclusions, etc., make the structure more compact and improve the plasticity and mechanical properties of the metal. The mechanical properties of castings are lower than the mechanical properties of forgings of the same material. In addition, the forging process can ensure the continuity of the metal fiber structure, keep the fiber structure of the forging consistent with the shape of the forging, and the metal streamline is complete, which can ensure that the parts have good mechanical properties and long service life. Precision die forging and cold extrusion are used. Forgings produced by processes such as, warm extrusion, etc., are unmatched by castings. Forgings are objects in which metal is pressed to shape the required shape or suitable compression force through plastic deformation. This force is typically achieved through the use of a hammer or pressure. The forging process creates a fine grain structure and improves the physical properties of the metal. In the actual use of parts, a correct design can make the particles flow in the direction of the main pressure. Castings are metal moldings obtained by various casting methods, that is, the smelted liquid metal is poured into a pre-prepared casting mold by pouring, injection, suction or other casting methods, and after cooling, it is shaken out, cleaned and treated. Processing, etc., to obtain a workpiece with a certain shape, size and performance.
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