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What are the characteristics of tungsten carbide mold components
article source:  Executive editor:yizhe279  View:2529  Publish time:2015-12-29

    Mold parts are widely used, the quality requirements of parts of the mold is also getting higher and higher, so that the use of mold parts to maximize the performance of. So, what are the characteristics of tungsten carbide mold components?
    1, wear resistance. When the billet is plastic degeneration in the mold cavity, the surface of the mould is both flowing and sliding, which makes the surface of the mold cavity and the blank to produce the intense friction, which leads to the failure of the die due to abrasion. So material wear resistance is one of the most basic and most important properties. Hardness is the main factor affecting the wear resistance. Under normal circumstances, the higher the hardness of the mold parts, the smaller the wear, the better the wear resistance. In addition, the wear resistance is also related to the type, quantity, shape, size and distribution of carbides in the material.
    2, obdurability. Mold working conditions are mostly very poor, and some often bear a larger impact load, which leads to brittle fracture. In order to prevent mold parts sudden brittle fracture in the work, tungsten carbide mold parts to must have a high strength and toughness.
    3, high temperature resistant performance. When the working temperature of the mold parts is higher, the hardness and strength will decrease, leading to the early wear of the mold parts or the failure of the plastic deformation. Therefore, the mold material should have high tempering stability, in order to ensure the mold parts with high hardness and strength in the working temperature.
    4, fatigue fracture performance. During the working process of the mold, the tungsten carbide mold components under the long-term effect of cyclic stress, often lead to fatigue fracture. The form has small energy multiple impact fatigue fracture, tensile fatigue fracture contact fatigue fracture and bending fatigue fracture. The fatigue fracture behavior of the mold mainly depends on its strength, toughness, hardness, and the content of impurities in the material.

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