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How to prevent the harm during the processing of plastic molds?

Update:06-03-2020
Summary:

How to prevent the harm during the processing of plasti […]

How to prevent the harm during the processing of plastic molds, if we want to prevent the harm, we must improve our own strength. If there is no strength, why do customers choose us, why do customers not choose better? Customers stay, we have to improve our awareness of prevention, but this is not enough, we must do it to give customers a trust.
Prevention of harm in plastic mold processing:
1. Excellent casting structure planning
The wall thickness of the casting should be as uniform as possible to prevent the occurrence of thermal knots in order to reduce the thermal fatigue caused by the heat confluence of the mold part. There should be proper casting fillets at the corners of the casting to prevent sharp corners on the mold from causing stress.
2. Reasonable plastic mold structure planning
(1) Each component in the mold should have satisfactory stiffness and strength to accept pressure without deformation. The thickness of the mold must be satisfactory to reduce deformation.
(2) The plan of the pouring system should minimize the impact and erosion on the core.
(3) Correctly select the tolerance fit and surface roughness of each component.
(4) Adhere to mold thermal balance.
3. Standardize heat treatment process
After heat treatment, the metallographic structure of the material can be changed, and the necessary strength, hardness, dimensional stability at high temperature, thermal fatigue resistance and material cutting functions can be adhered to. The correct heat treatment process will get very good results, and the function of the steel is controlled by the quenching temperature and time, cooling rate and tempering temperature.
4. Die casting production process control
(1) Temperature control: the preheating temperature and working temperature of the mold; the alloy pouring temperature, on the premise of insisting on excellent molding, use a lower pouring temperature.
(2) Reasonable die casting process: specific pressure and filling speed.
(3) Adjust the clamping force of the machine to make the mold load uniform. Pay attention to cleaning the scraps on the surface of the mold to prevent these residues from making the mold surface uneven and causing deformation when the mold is closed.
(4) Strict control of alloy melting to reduce gas in metal liquid.