How to prevent the hazards during plastic mold processi […]
How to prevent the hazards during plastic mold processing? To prevent hazards, we have to improve our own strength. If there is no strength, why should customers choose us? Why don’t customers choose better ones? Everyone says that they want to shop around. When customers stay, we have to improve our awareness of prevention, but this is not enough, we must do it to give customers a kind of trust.
Prevention of hazards during plastic mold processing:
1. Excellent casting structure planning
The wall thickness of the casting is as uniform as possible to prevent hot spots and reduce thermal fatigue caused by the heat converging in the mold part. The corners of the casting should have proper casting fillets to prevent the sharp corners on the mold from causing stress.
2. Reasonable plastic mold structure planning
(1) Each component in the mold should have satisfactory rigidity and strength to accept pressure without deformation. The wall thickness of the mold must be satisfied to reduce deformation.
(2) The pouring system is planned to minimize the impact and erosion on the core.
(3) Correctly select the tolerance and surface roughness of each component.
(4) Adhere to the heat balance of the mold.
3. Standard 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 function can be maintained. The correct heat treatment process can 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, under the premise of maintaining excellent molding, use a lower pouring temperature.
(2) Reasonable die casting process: specific pressure, filling speed.
(3) Adjust the clamping force of the machine to make the mold evenly stressed. Pay attention to cleaning the residual debris on the mold surface to prevent these residues from causing uneven force on the mold surface and causing deformation when the mold is closed.
(4) Strictly control alloy smelting and reduce gas in molten metal.