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How can plastic molds prevent damage during injection molding?

1. Good casting structure design
The thickness of the casting wall should be as even as possible to avoid the hot spot, so as to reduce the thermal fatigue caused by local heat concentration of the mold. The corner of the casting shall have a proper round casting Angle to avoid the stress caused by sharp Angle on the die.
2. Reasonable plastic mold structure design
1) each component in the mold should have enough stiffness and strength to withstand pressure without deformation. The mould wall should be thick enough to reduce deformation.
2) the design of the casting system minimizes the impact and erosion on the core.
3) correct selection of tolerance fit and surface roughness of each component.

4) keep the heat balance of the mold.

3. Standardize the heat treatment process
The microstructure of the material can be changed by heat treatment to maintain necessary strength, hardness, dimensional stability at high temperature, thermal fatigue resistance and material cutting performance. The correct heat treatment process, will get very good results, and the properties of steel is by quenching temperature and time, cooling speed and tempering temperature control.
4. Die casting production process control
1) temperature control: preheating temperature and working temperature of the mold; The casting temperature of the alloy shall be lower under the premise of maintaining good molding.
2) reasonable die-casting process: specific pressure and filling speed.
3) adjust the clamping force of the machine to make the force of the mold even. Pay attention to cleaning the residual debris on the mold surface, so as not to cause uneven force on the mold surface and deformation when the mold is closed.
4) strictly control the alloy melting and reduce the gas in the liquid metal.

Next article：What should we pay attention to during the inspection of injection mold?
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