Do you know cemented carbide die materials need to have which four major properties? We Jetvision share somgthing with you.

1. Cemented carbide dies must have a high strong resistance: die in the extrusion process to simultaneously accept the great extrusion pressure, bending stress, impact and other chaotic load. Therefore, the request of the material selected, through heat treatment, should have a high strong resistance. Therefore, the die material should have outstanding hardenability, so as to ensure that the die can be hardened and uniform arrangement. Large chunks of carbide and severe deflection, fiber directional and non-metallic adulteration and other internal shortcomings, will make the strong resistance of the mold reduced, or in the load caused by stress concentration, resulting in pre-damage mold.

2. Cemented carbide dies must have very good wear resistance: die should have high wear resistance, to ensure the normal service life, to produce a large number of qualified extrusion. Generally speaking, the hardness of steel and wear resistance in certain conditions is proportional. Therefore, the die material should not only have sufficient hardenability, but also have a high hardenability. In addition to hardness, the decisive and heat treatment of the matrix arrangement of the coarse, composition, excess and mouth fire precipitation carbide how much, large and small, type, dispersion and red hardness. Such as high-speed steel and low-alloy tool steel, although the heat treatment has the same hardness value, the actual use, the former wear resistance is much higher, and rich in more than 80% of the WC cemented carbide, its wear resistance than steel tens of times higher. Therefore, in large quantities of kneading production, in order to get a long service life of the mold, still more with high price, technically chaotic high-speed steel, carbide for the mold material.

3. Cemented carbide dies must have sufficient thermal stability: each continuous production, the temperature rise of the mold sometimes reaches or exceeds 200℃, which is 160 ~ 180℃for the tempering temperature of the mold material, will make the strength, hardness reduction, so the temperature rise for higher mold materials, should have outstanding tempering stability.

4. Tungsten carbide dies must have outstanding technical: cold extrusion die manufacturing cycle is long, technically chaotic, high precision requirements. Usually are required through the casting, cutting, heat treatment, grinding or other finishing processes. Therefore, as long as the technical comparison of outstanding materials, in order to meet the needs of production