Molding temperature: barrel temperature, plasticizing temperature, nozzle temperature, mold temperature and plastic drying temperature.
Barrel temperature: It is the melting temperature of the plastic. The temperature of the barrel is set too high. The viscosity of the plastic is low after melting. Under the same injection pressure and flow rate, the injection speed is fast, the molded product is easy to fly, silver wire, discoloration and brittleness.
The temperature of the cylinder is too low, the plastic plasticization is poor, the viscosity is high, the injection speed is slow under the same injection pressure and flow rate, the molded product is easy to be insufficient, the weld mark is obvious, the size is unstable, and there is a cold block in the product.
Nozzle temperature: The nozzle temperature is set high, and the nozzle is easy to flow, resulting in a cold wire in the product. Low nozzle temperatures cause blockage in the mold casting system. The injection pressure should be increased to inject the plastic, but there is a cold block in the molded product.
Mold temperature: The mold temperature is high, the injection pressure and flow rate can be set lower, but under the same pressure flow rate, the product is easy to fly, warping deformation, product sticking mold difficulty. The mold temperature is low, under the same injection pressure and flow rate, the product is insufficiently formed, bubbles, weld lines and the like.
Plastic drying temperature: Various plastics have different drying temperatures. ABS plastic is generally set to a drying temperature of 80 ~ 90 ° C, otherwise it is not easy to dry and volatilize moisture and residual solvent, the product is easy to have silver wire and bubbles, the strength of the product will also decline.
