摘要
气体穿透长度和气指缺陷是衡量气辅注塑成型质量的重要指标。采用气辅注塑成型全三维数值模拟分析和成型实验的方法研究了熔体温度和模具温度对气辅注塑成型质量的影响。首先采用单因素法研究分析了熔体温度和模具温度的影响,结果表明:熔体温度升高,使得气体穿透长度降低,气指缺陷加重,同时也增加了气辅塑件的内应力和翘曲变形;模具温度升高,使得气体穿透长度降低,气指缺陷加重,同时也降低了内应力和翘曲变形。接着采用两因素五水平正交试验得出了优化参数组:熔体温度为240℃、模具温度为40℃。最后通过CAE分析和成型实验对优化参数组数据进行验证,验证结果表明:该参数组下获得的气体穿透效果和气辅成型质量良好。
Gas penetration length and gas finger were important indexes to measure the quality of gas-assisted injection molding(GAIM).The effects of polymer temperature and mold temperature on the quality of gas-assisted injection molding were studied by the numerical simulation of full three dimensional(3D)gas-assisted forming process,experiments and orthogonal experimental design.Firstly,the effects of polymer temperature and mold temperature were studied and analyzed by single factor method.The results show that by increasing the polymer temperature,the gas penetration length is reduced,the gas finger is aggravated,and the product internal stress and warpage deformation are also aggravated.With the increase of mold temperature,the gas penetration length is reduced,the gas finger is aggravated,the product internal stress and warpage deformation are reduced too.Then,the optimized parameter group 240℃,40℃are obtained by five levels and two factors orthogonal experiment.Finally,the data of the optimized parameter group are verified by CAE and experiments.The verification results show that the gas penetration effect and gas assisted molding quality obtained under this parameter group are good.
作者
王子剑
任清海
耿铁
WANG Zijian;REN Qinghai;GENG Tie(Department of Mechanical and Electrical Engineering,Anyang Vocational and Technical College,Anyang 455000,China;College of Mechanical and Electrical Engineering,Henan University of Technology,Zhengzhou 450007,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2022年第5期125-129,139,共6页
China Plastics Industry
基金
国家自然科学基金(51375143)
河南省高等学校重点科研项目(18A460008)。
关键词
熔体温度
模具温度
气辅注塑成型
数值模拟
成型实验
正交试验
优化参数组
Polymer Temperature
Mold Temperature
Gas-assisted Injection Molding
Numerical Simulation
Forming Experiment
Orthogonal Test
Optimized Parameter Group
