工艺参数对注塑制品翘曲变形的影响
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摘要
运用正交试验,通过Moldflow模拟分析,将模拟分析样条与实际注塑成型微样条进行对比,研究了模具温度、熔体温度、保压时间、保压压力、注射压力工艺参数对注射成型制品翘曲变形的影响。通过微型样条模具进行成型实验,用三坐标测量仪对成型制品的翘曲变形进行了测量。结果表明,保压压力和熔体温度对样条翘曲变形的影响较大,实际注塑成型样条的翘曲变形量比模拟分析的翘曲变形量大,拉伸样条模拟数值与实际的平均差值为0. 205 mm,实际值比模拟值增大了约50%;冲击样条的模拟数值与实际数值的平均差值为0. 240 5 mm。
The warpage parts were analyzed by Moldflow simulation and actual injection molding. The effects of mold temperature,melt temperature,packing time,packing pressure and injection pressure on warpage of injection molding parts were studied by orthogonal test. The injection molding process was tested by micro spline mould. The warpage parts of molding were measured with a three-coordinate measuring machine. The results showed that the packing pressure and melt temperature had important effects for warpage of parts. The warpage of actual injection molding was bigger than that of simulation test. The average error of tensile specimen was 0. 205 mm,the actual value increased by 50% compared with simulation test. The average error of impact specimen was 0. 240 5 mm.
The warpage parts were analyzed by Moldflow simulation and actual injection molding. The effects of mold temperature,melt temperature,packing time,packing pressure and injection pressure on warpage of injection molding parts were studied by orthogonal test. The injection molding process was tested by micro spline mould. The warpage parts of molding were measured with a three-coordinate measuring machine. The results showed that the packing pressure and melt temperature had important effects for warpage of parts. The warpage of actual injection molding was bigger than that of simulation test. The average error of tensile specimen was 0. 205 mm,the actual value increased by 50% compared with simulation test. The average error of impact specimen was 0. 240 5 mm.
引文
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[13]傅建钢.注塑成型工艺参数对壳盖注塑件翘曲变形的影响[J].塑料科技,2018,46(5):53-57.
[14]庞龙凤.基于正交试验汽车前灯注塑工艺参数优化[J].塑料工业,2018,46(2):27-30.
[15]郭晓,郭庆.汽车内饰仪表板注塑翘曲变形的CAE仿真及测量[J].塑料,2015,44(4):105-107.
[2] ZAMANI H,AZMOUDEH S,SHELSH-NEZHAD K. Warpage characterization of thin and centrally-gated injection molded part by applying cavity pressure measurement[J]. Applied Mechanics and Materials,2014,446/447:1099-1103.
[3] WANG Q,ZHANG M,CAI Y,et al. CAE optimization and design of injection mould with inner parting structure for automobile front bumper[J]. Recent Patents on Materials Science,2016,9(1):58-63.
[4]金亚云.基于正交试验与CAE对塑件翘曲变形进行分析[J].模具工业,2017,43(12):14-17.
[5] HAKIMIAN E,SULONG AB. Analysis of warpage and shrinkage properties of injection-molded micro gears polymer composites using numerical simulations assisted by the Taguchi method[J]. Materials&Design,2012,42:62-71.
[6]邓爱林,薛松,徐斌,等.汽车储物盒导轨的翘曲变形分析及改进[J].中国塑料,2018,32(1):125-130.
[7]高月华,王希诚.注塑制品的翘曲优化及影响因素分析[J].化工学校,2007,58(6):1575-1580.
[8]李海梅,刘永志,申长雨,等.注塑件翘曲变形的CAE研究[J].中国塑料,2003,17(3):53-58.
[9]李海梅,顾元宪,申长雨.注塑件翘曲变形分析与成形尺寸预测[J].中国机械工程,2002,13(10):820-823.
[10]徐征,王继章,吕治斌,等.工艺参数对平板微小器件注塑翘曲的影响[J].光学精密工程,2013,21(7):1825-1830.
[11]朱兴建,俞建新,徐以国,等.基于Moldflow的汽车内饰件翘曲变形优化方法[J].塑料,2014,43(5):102-105.
[12]刘成娟,刘成刚,刘艳,等.基于CAE与正交试验法的工艺参数对翘曲变形的影响分析[J].中国塑料,2018,32(1):102-107.
[13]傅建钢.注塑成型工艺参数对壳盖注塑件翘曲变形的影响[J].塑料科技,2018,46(5):53-57.
[14]庞龙凤.基于正交试验汽车前灯注塑工艺参数优化[J].塑料工业,2018,46(2):27-30.
[15]郭晓,郭庆.汽车内饰仪表板注塑翘曲变形的CAE仿真及测量[J].塑料,2015,44(4):105-107.