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快狗视频分析注塑加工過程(chéng)中的溫度控(kòng)製

來源:http://www.lsjtcyjt.cn/ 日期:2018-08-08

注(zhù)塑加工廠根據用戶的需求,將熱融(róng)化的材料由高壓射入模腔,經冷 卻固化後得到某些形狀複雜的(de)部件,注塑加工(gōng)是經常用到的部件加工方法。下麵,注塑(sù)加工(gōng)廠(chǎng)為您介(jiè)紹(shào)一下注塑加工過程中的溫度控製:
  According to the needs of users, the injection molding plant injects the hot melt materials into the mold cavity from high pressure, and obtains some complex parts after cooling and curing. Injection molding is a frequently used part processing method. Next, the injection molding factory will introduce the temperature control during injection molding:
  1、料筒溫度(dù):注射模塑過程需要控製的溫度有料筒溫度,噴嘴溫(wēn)度和模具溫度(dù)等。前兩種(zhǒng)溫度主要影響塑料的塑(sù)化和流動,而後(hòu)一種溫度(dù)主要是(shì)影響塑料的流動和冷 卻。每一種塑料都具有不同的流動溫度(dù),同一種塑料,由於來源(yuán)或牌(pái)號不同,其流動溫度及分 解溫度是有(yǒu)差別的,這是由(yóu)於平均分子量和分子量分布不同所致,塑料在不同類型的注射(shè)機內的塑化(huà)過程也是不同的,因而選擇料筒溫度(dù)也不相同。
  1. Barrel temperature: the temperature to be controlled in the injection molding process includes barrel temperature, nozzle temperature and mold temperature. The first two temperatures mainly affect the plasticization and flow of plastics, and the second 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.
  濟南注(zhù)塑加工
  2、噴嘴溫度:噴嘴溫(wēn)度通(tōng)常是略(luè)低於料筒高溫度的,這是為了防止(zhǐ)熔料在直通式噴嘴可能發生的"流(liú)涎(xián)現象".噴(pēn)嘴溫度也不能過低,否則將會造成熔料的早凝而將噴嘴(zuǐ)堵塞,或者由於早凝料注入模腔而影響製品的性能。
  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 nozzle temperature should not be too low, otherwise it will cause the early setting of molten material and block the nozzle, or affect the performance of the product due to the injection of early setting material into the mold cavity.
  3、模具溫度:模具溫度對製品的內在性能和表觀質量影響很大。模具溫(wēn)度的高低決定於塑料結晶性的有無、製品的尺寸(cùn)與結構、性能要求,以及其它工藝條件(熔料溫度、注射速度及注射(shè)壓力(lì)、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.).
 

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