1, wear resistance
Blank in the mold cavity in the plastic denaturation, along the cavity outside both activities and sliding, so that the cavity outside the blank and the fierce friction between, resulting in mold due to wear and take effect. So that the wear resistance of the data is the most fundamental mold, one of the most important function. Hardness is an important factor affecting wear resistance. As usual, the higher the hardness of the mold machine, the smaller the wear, the better the wear resistance. In addition, the abrasion resistance is also related to the variety, number, status, size and distribution of carbides.
2, toughness
Mold things prerequisite is very unruly, and some often suffer a greater impact load, resulting in brittle fracture. In order to avoid the mold machine in the event of sudden brittle, precision metal mold to have a high strength and toughness. The toughness of the mold depends on the carbon content of the data, grain size and structure - precision molds.
3, fatigue fracture function
Mold things in the process, in the reincarnation of the long-term effect of stress, often lead to fatigue fracture. Its situation has a small energy to repeatedly combat the fatigue of the break, stretch tired fatigue cracked fatigue fracture and tortuous tired fracture. The fatigue fracture function of the mold depends on its strength, toughness, hardness, and inclusion in the inclusions.
4, low temperature functionWhen the temperature of the mold things higher, will reduce the hardness and strength, resulting in late wear or plastic deformation of the mold into effect. Therefore, precision injection molds should have a high resistance to tempering stability, to ensure that the mold temperature in things, with high hardness and strength.