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What are the features of the precision injection molding die

Release date:2017-11-24 Click number:3517

With the continuous development of society, people's demand for plastic products is getting higher and higher. Precision injection molding arises at the historic moment. For precision injection molding, besides the use of high-precision injection molding machines, plastic moulds also need to be highly precise. Next, we will briefly introduce the four characteristics of precision injection molding.

1. Wear resistance

When the blank is plastic in the mold cavity, the outside of the cavity is both active and sliding, which causes the friction between the outside and the blank of the cavity, thus causing the die to take effect because of the wear. Therefore, wear resistance is one of the most fundamental and important functions of dies. Hardness is an important factor affecting wear resistance. Under normal circumstances, the higher the hardness of the die, the smaller the wear volume and the better wear resistance. In addition, wear resistance is not related to the variety, number, status, size and dispersion of the suspected carbides.

2, strength and toughness

Most of the preconditions of mould are very bad, some of them are often subjected to heavy load, thus causing brittle fracture. In order to avoid the sudden brittle fracture of the mold, the precision metal mold should have higher strength and toughness. The toughness of mould depends on the carbon content, grain size and structural condition of the data precision mold manufacturing.

3. Fatigue fracture function

In the process of mold, in the long run of reincarnation stress, fatigue is often broken. The situation is characterized by small energy, repeated crackdowns, fatigue, rupture, fatigue, rupture, fatigue, rupture, twists, fatigue and breakage. The fatigue and fracture function of a mold depends largely on its strength, toughness, hardness, and the amount of inclusions in it.

4, low temperature function

When the temperature of the mold is higher, the hardness and strength will decrease, which will lead to late wear or plastic deformation. Therefore, the precision injection mold should have higher resistance to tempering, so that the mold has higher hardness and strength at the temperature.


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昆山達亮塑膠模具有限公司

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