What are the causes of hard alloy die cracking?

Hard alloy die with high hardness, high wear resistance, small expansion coefficient and so on a series of advantages, but if in the process of using, hard alloy moulds burst failure often appear, requires attention, here is small make up the blowout reasons of integration of tungsten steel mold, see if you did, and then suit the remedy to the case to regulate the implementation.  

Reason 1: mold raw material quality  

In the case of poor quality or improper preservation of alloy die raw materials, tungsten powder is oxidized, the strength and toughness of the material decreases, the service bearing capacity decreases, leading to die cracking.  

Reason two: mold structure design  

If the hard alloy die structure design is not reasonable, it will also lead to the die burst, such as the die strength is not enough, the knife edge spacing is close, or the template blocks are not enough and do not use the backing plate.  

Cause three: Operation process  

Demagnetization treatment is needed before production, and the proper tonnage of the punch press and the standardized operation of quenching tempering process and other process operations. If such operations are not carried out, or improper operation, it will also lead to the failure of the tungsten steel die.  

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