1. Good casting structure design
The wall thickness of the casting is as uniform as possible, Die casting so as to reduce heat fatigue caused by local heat concentration. The corners of the casting should be properly cast round corners to avoid the stress caused by the sharp corners on the die.
2. Reasonable design of die structure
1) the components shall have sufficient stiffness and strength to withstand pressure without deformation. The wall thickness should be sufficient to reduce deformation.
2) design of pouring system to minimize the impact and erosion of the core.
3) select the tolerance and surface roughness of each component correctly.
4) keep the heat balance of the mould.
3. Standardize heat treatment process
The metallographic structure of the material can be changed by heat treatment to ensure the necessary strength, hardness, stability of the dimension under high temperature, Multi slider die casting machine thermal fatigue resistance and material cutting performance.
The correct heat treatment process will get the best mold performance, die casting machine while the steel performance is controlled by quenching temperature and time, cooling speed and tempering temperature.
4. Control of casting process
1) temperature control: preheating temperature and working temperature of mould; zinc die casting The casting temperature of the alloy is in a low casting temperature.
2) reasonable die-casting process: ratio pressure and filling speed.
3) adjust the clamping force of the machine, so that the die force is even. Pay attention to cleaning the debris on the surface of the mold, so as to avoid the uneven surface force of the mould.
4) strictly control the alloy smelting and reduce the gas in the metal liquid.
5. Maintenance and maintenance of mould
1) regularly eliminate stress
2) mould repair