1.料筒溫度：注射加工模塑過(guò)程需要控制的溫度有料筒溫度，噴嘴溫度和模具溫度等。前兩程溫度主要影響塑料的塑化和流動(dòng)，而后一種溫度主要是影響塑料的流動(dòng)和冷卻。每一種塑料都具有不同的流動(dòng)溫度，同一種塑料，由于來(lái)源或牌號(hào)不同，其流動(dòng)溫度及分解溫度是有差別的，這是由于平均分子量和分子量分布不同所致，塑料在不同類(lèi)型的注射機(jī)內(nèi)的塑化過(guò)程也是不同的，因而選擇料筒溫度也不相同。
1. Barrel temperature: the temperature to be controlled in the injection molding process includes barrel temperature, nozzle temperature, mold temperature, etc. The first two temperatures mainly affect the plasticization and flow of plastics, and the latter temperature mainly affects the flow and cooling of plastics. Each plastic has different flow temperature. For the same plastic, due to different sources or brands, its flow temperature and decomposition temperature are different, which is due to different average molecular weight and molecular weight distribution. The plasticization process of plastics in different types of injection machines is also different, so the barrel temperature is also different.
濟(jì)南模具加工
Jinan mould processing
2、噴嘴溫度：噴嘴溫度通常是略低于料筒高溫度的，這是為了防止熔料在直通式噴嘴可能發(fā)生的“流涎現(xiàn)象”。噴嘴溫度也不能過(guò)低，否則將會(huì)造成熔料的早凝而將噴嘴堵死，或者由于早凝料注入模腔而影響制品的性能
2. Nozzle temperature: the nozzle temperature is usually slightly lower than the high temperature of the barrel, which is to prevent the "salivation" of molten material in the straight through nozzle. The temperature of the nozzle shall not be too low, otherwise the nozzle will be blocked due to the early setting of the melt, or the performance of the product will be affected due to the injection of the early setting material into the mold cavity
3、模具溫度：模具溫度對(duì)制品的內(nèi)在性能和表觀質(zhì)量影響很大。模具溫度的高低決定于塑料結(jié)晶性的有無(wú)、制品的尺寸與結(jié)構(gòu)、性能要求，以及其它工藝條件（熔料溫度、注射速度及注射壓力、模塑周期等）。
3. Mold temperature: mold temperature has a great impact on the internal performance and apparent quality of products. The mold temperature depends on the crystallinity of the plastic, the size and structure of the product, performance requirements, and other process conditions (melt temperature, injection speed, injection pressure, molding cycle, etc.).
