1. Wear resistance
When the blank is plastically deformed in the mold cavity, it moves and slides along the outside of the cavity, which causes intense friction between the outside of the cavity and the blank, thereby inducing the mold to take effect due to wear. Therefore, the wear resistance of the material is one of the most fundamental and important functions of the mold. Hardness is an important factor affecting wear resistance. Under normal circumstances, the higher the hardness of the mold, the smaller the amount of wear and the better the wear resistance. In addition, the wear resistance has nothing to do with the variety, number, state, size and distribution of carbides in Zi guess.
2. Strong and tough
Most of the mold’s premises are very stubborn, and some are often subjected to large impact loads, which leads to brittle fracture. In order to avoid the sudden and brittle breaking of the whole mold, precision hardware molds should have high strength and toughness. The toughness of the mold depends on the carbon content, grain size and structural conditions of the data-precision mold manufacturing.
3. Fatigue breaking function
In the course of the mold, under the long-term influence of the wheel’s responsiveness, it often caused fatigue and fracture. The situation is that small energy repeatedly hits fatigue breaks, stretches fatigue breaks, battles fatigue breaks, and twists and turns fatigue breaks. The fatigue fracture function of the mold depends on its strength, toughness, hardness, and the content of inclusions in the guess.
4. Low temperature function
When the working temperature of the mold is higher, the hardness and strength will be reduced, which will cause the mold to wear or plastic deformation to take effect. Therefore, the precision injection mold should have higher stability against tempering, to ensure that the mold has higher hardness and strength at the working temperature.