Shanghai Daoqin Plastics Co., Ltd.

         is achieve material, melt and amount between balanced, has necessary in 每一段 design in, use 经 验证 计算 and testing experience data. is in or 另一段 in several dimensions, can can 会导致意想不 to 结果.

         this 包括一 如熔 melt 开始, in machine toward 各 位置 pressure development, melt material material degree and temperature degree 信息, and machine thick degree ﹑ hot electrical 偶放置 and machine inner temperature degree and other 信息. speed rate also need various temperature degree lower polymer degree data ﹑ hot property and ratio hot 曲线幂律 and property 指数以 and hot.

        笔者曾经进行 “简化” 熔化 speed rate 计算, formed analysis need 近100 data. this 一计算结 combined polymer in property hot generate ﹑ polymer 输送﹑ pressure development, and hot device hot force several 计算.

         for/regarding material 段, 面临 挑战就 more large. data very less 公布, very difficult obtain, very difficult it used for material basic 体积计算 in. 进行一 basic analysis need data, ratio average particle size ﹑堆积﹑ polymer pellets between scratch ﹑ polymer pellets and screw and machine between scratch, and material and machine inner temperature degree. therefore, material analysis 几乎完 full is experience property, if has a large amount of device table/sheet and testing, this data in many is can can obtain.

        不幸 is, “ pressure shrink ratio ” concept is material analysis in elements. this is 一 冒险且不准确 methods, is pressure shrink ratio 仅考虑喂 material versus for 输送段 体积, has other effect/influence material speed rate 方面都 by 忽略. in addition, pressure shrink ratio usually effect/influence speed rate, can can 会引入一 意想不 to rear 果.

        当 screw this different function 处于不 balanced 状态时, various negative property can issues generate. its in most Common issues is unstable or 波动. degree material can can 会导致 unstable ﹑ screw / machine high abrasion loss ﹑ high melt temperature degree ﹑ more power/electricity consumption and non uniform melt;缺 material can can 会导致 unstable ﹑熔化 speed rate high and relatively low 输出.

        同样 issues effect/influence speed rate: degree material can can 会导致 material 道堵塞 and generate unstable property, screw high abrasion loss, electrical machine high negative and melt uniform degree 差;反之, material can can 会导致 defect speed rate and melt uniform degree.

         extrusion and front 一段 匹配同样 important. extrusion design or degree design effect/influence extrusion amount, melt temperature degree, melt stability property and melt uniform property.

        每一 连续 processing 段取决于 front 一段 输出. is, 无论计算 and machine analysis more 么精妙, 第一段 most difficult forecast. very less has design is in 第一组计算 in formed, and usually less has 一 段必 must adjustment, to balanced.

         if and mixed combined 段, add 另一段以匹配 front 一段, using/adopting different 计算, 以确定 mixed combined device has property and can force.

        综 upper 述, 不考虑 screw / machine between balanced 而 改变 several dimensions, this type of method can can 会导致 more more issues need solution. mono screw extrusion machine tube/pipe is types versus for simple machine plant/unit, polymer from solid processing to melt 时, its is comparison complex.