Injection mold in the processing, is generally a batch forming, so our team injection mold technical method and process is very important, if in the process, not according to the requirements, will damage the injection mold and. Therefore, analysis of flow injection mold processing method of the bearing network:
1, the raw material to the general drying is not needed, 2 hours at 80 ℃ drying case;
2, the molding temperature range is larger, heating melting and curing speed, so the molding cycle is short; the temperature parameter: barrel temperature 200 ℃, material high temperature to 20018 skf taper roller bearing the silver, and the material will make the transparency of differential temperature too low;
3, mold temperature control: temperature at 50-80 ℃;
4, GPPS good liquidity, plastic beer is not needed in the high pressure (usually the injection pressure is about 10Mpa), so as to avoid excessive increase of plastic stress -- may cause cracking (especially the paint decoration process);
5, the injection speed straight appropriate high to 20018 skf taper roller bearing weaken the clip water, but because of the injection speed by injection pressure effects of large, high speed may cause flash or die sticking out the top and white tip crack problems;
6, the appropriate pressure: if the pressure is too low, the rotation of the screw is easy to overflow into the air, the barrel particle density is small, the plasticizing effect of particles is not good, effect of 20018 skf taper roller bearing plastic parts surface quality (general pressure 10-20kg/cm2); g) the mold design fine nozzle is 0.8-1.0mm.h) glass fiber reinforced PS-GF30, barrel the temperature of 180~275, the mold temperature is 20~80, molding shrinkage rate of 0.1~0.2. density 1.29/cm3.