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Mold parts hardness is the main factor affecting wear resistance
With the hardness of accessories is the main factor affecting wear resistance. Under normal circumstances, the higher the hardness of mold parts, the smaller the wear, wear resistance is also better. In addition, the wear resistance is also related to the type, quantity, shape, size and distribution of carbides in the material.
1, toughness
Mold working conditions are mostly very bad, and some often bear a greater impact load, resulting in brittle fracture. In order to prevent the mold parts in the work suddenly brittle, mold to have a high strength and toughness. The toughness of the mold depends mainly on the carbon content of the material, grain size and tissue state.
2, wear resistance; mold accessories
When the blank is deformed in the mold cavity, it flows and slides along the surface of the cavity, causing severe friction between the cavity surface and the blank, which causes the mold to fail due to wear. So the wear resistance of the material is one of the most basic and most important performance of the mold.
3, fatigue fracture performance
Mold parts in the course of work, in the long-term role of cyclic stress, often lead to fatigue fracture. Its form has a small energy multiple impact fatigue fracture, tensile fatigue fracture contact fatigue fracture and bending fatigue fracture.
Posted by Leila
