Dalian injection moldingIn the process of temperature control
Injection molding意甲下注Equipment and mold
1.nitrogen-treated barrel temperature, injection molding process, the need to control the temperature of the cylinder temperature, nozzle temperature and mould temperature, etc.The first two main influence plastic plasticizing temperature and flow, and then a temperature is mainly influence plastic flow and cooling.Each kind of plastic flow with different temperature, the same kind of plastic, due to different sources or brand, the flow temperature and decomposition temperature is little different, this is due to the different average molecular weight and molecular weight distribution, plastic in different type of injection machine of plasticizing process is also different, so choose the cylinder temperature is not the same.
Pictures of mold temperature, mold temperature inner performance and apparent impact on the quality of products.Mold temperature is determined by the size of the plastic, of crystalline products and structure, performance requirements, and other process conditions (melt temperature, injection speed and injection pressure, molding cycle, etc.).
2. The nozzle temperature, nozzle temperature is usually slightly lower than expected tube maximum temperature, this is to prevent the molten material in straight through the nozzle may be "salivate phenomenon".Nozzle temperature also cannot too low, otherwise will cause early setting of melting and the nozzle clogging, or due to early coagulation material into the cavity affect the performance of the products.