Few days ago,I have introduced the former three tungsten carbide mold parts performances for you. Today, I will continue to introduce the another three.
4. Cold and hot resistance fatigue performance
In the process of work, some tungsten carbide mold parts are in the condition of repeated heating and cooling. The tension of cavity surface, the action of pressure and stress cause surface cracking and peeling, increase the friction, hinder plastic deformation, reduces the dimension precision, which results in the failure of mold. Cold and hot fatigue is one of the main form of hot-work die failure. This kind of mold should have high resistance to cold and hot fatigue performance.
5.Corrosion resistance
Some tungsten carbide mold parts at work will decompose strong erosion gas such as HCI, HF and so on after heating, because there are chemical elements of chlorine and fluorine in the plastic. Those gas will erode the cavity surface of mold components, and increase the surface roughness and exacerbate the wear and failure rate.
6.High-temperature property
It is one of the most important property of tungsten carbide mold parts performances. When the working temperature of tungsten carbide mold parts is high, the hardness and strength will be reduced. This will lead to premature wear of mold or producing plastic deformation and failure. Therefore, the material of tungsten carbide mold parts should have high resistance to tempering stability, to ensure that the mold has high hardness and strength under the working temperature.
The above six points are the necessary tungsten carbide mold parts performances. If you'd like to know more about the properties of tungsten carbide mold parts, you can continue to browse our official website to learn it.