The Injection Temperature Of The Injection Mold

Injection temperature is an important factor affecting injection pressure. The injection molding machine barrel has 5~6 heating stages, and each raw material has its suitable processing temperature (the detailed processing temperature can refer to the data provided by the material supplier). The injection temperature must be controlled within a certain range. The temperature is too low, the melt plasticization is poor, which affects the quality of the molded parts and increases the difficulty of the process; The temperature is too high, and the raw materials are easy to decompose. In the actual injection molding process, the injection temperature is often higher than the barrel temperature, and the higher value is related to the injection rate and material performance, up to 30 °C. This is caused by the high heat generated by the shear of the melt as it passes through the injection port. This difference can be compensated for in two ways during mold flow analysis, either by trying to measure the temperature of the melt during empty injection molding, and by including the nozzle in the modeling.