模具技术Issue(1)：22-25,63,5.
护套注塑成型缺陷分析与对策
Analysis and solutions on injection molding defects of sheath
摘要
Abstract
The plastic sheath made of TPU may have mucosae,bubbles,cracks,coking and other defects after injection molding.The cause of injection molding defects related with molding process parameters or mould structure is analyzed,solutions were proposed and valid injection molding parameters were obtained after trial forming:the temperature of plastic particles drying is 82 ℃,the drying time is 3～4 h,the molding injection heating temperature is 200 ～ 220 ℃,the molding injection pressure is 100 MPa and pressurized 80 MPa,the injection time is 3 s,the cooling time is 15 s.The neutral (or dryness) release agent is adopted to achieve plastic part demolding.The injection molding defects can be avoided adopting these parameters after verification of batch productions and the qualities of batch production parts are stable.关键词
护套/TPU/成型调试/缺陷分析Key words
sheath/TPU/molding debugging/defects analysis分类
矿业与冶金引用本文复制引用
张国新..护套注塑成型缺陷分析与对策[J].模具技术,2018,(1):22-25,63,5.基金项目
江苏省“青蓝工程”学术带头人人才基金(苏教师[2014]1号) （苏教师[2014]1号）
无锡市智能制造名师工作室专项资金(锡教高职[2015]38号). （锡教高职[2015]38号）
