工艺参数对高光制品收缩及翘曲变形的影响

上海交通大学学报（自然版） ›› 2016, Vol. 50 ›› Issue (02): 235-240.

工艺参数对高光制品收缩及翘曲变形的影响

王梦寒，李雁召，刘晓，夏知姿，陈明亮

（重庆大学材料科学与工程学院，重庆 400030）

收稿日期:2014-11-11 出版日期:2016-02-29 发布日期:2016-02-29
基金资助:
中央高校基本科研业务费专项资金项目（CDJZR14130006）资助

Effect of Process Parameters on Shrinkage and WarPage of Rapid Heat Cycle Molding Plastic Part

WANG Menghan,LI Yanzhao,LIU Xiao,XIA Zhizi,CHEN Mingliang

(College of Material Science and Engineering, Chongqing University, Chongqing 400030, China)

Received:2014-11-11 Online:2016-02-29 Published:2016-02-29

摘要/Abstract

摘要： 摘要：为了分析工艺参数对大型平板高光无痕注射成型（RHCM）制品收缩及翘曲变形的影响，以空调柜机出风面板RHCM产品开发为例，利用MOLDFLOW软件建立RHCM有限元模型并进行模拟分析，采用田口实验设计方法分析工艺参数对产品综合质量的影响，采用单因素实验方法分析了模具温度对制品收缩和翘曲变形的影响，以及不同模具温度下工艺参数对制品收缩和翘曲变形的影响.结果表明：工艺参数对制品综合质量影响的大小顺序依次为熔体温度、保压压力、加热时间、保压时间、冷却时间、注射时间；当模具温度升高到材料的玻璃化转变温度并进入RHCM区域时，制品的体积收缩率和翘曲变形量呈减小的变化趋势，当加热时间为35 s时，制品的综合质量最好；在不同的模具温度下，制品的收缩率和翘曲变形量随熔体温度的升高而呈现出准线性增长的变化趋势，随保压压力的增大而减小，随保压时间的增加而呈小幅波动变化.

关键词: 大型平板, 高光无痕注射成型, 工艺参数, 收缩, 翘曲变形

Abstract: Abstract： In order to define the effect of process parameters on shrinkage and warpage of large flat plastic parts by rapid heating cycle molding (RHCM), taking an airconditioning panel plastics as an example, MOLDFLOW was used to establish the finite element model and to conduct simulation and analysis. By using Taguchi methods, the effect of process parameters such as melt temperature, packing pressure, heating time, packing time, cooling time and injectiontime on the comprehensive quality was studied. The single factor experiment method was applied to analyze the effect of mold temperature on shrinkage and warpage. Besides, the influence law of other process parameters on shrinkage and warpage at different mold temperatures was also studied. The results show that volumetric shrinkage and warpage decrease apparently with mold temperature rising to the thermal deformation temperature of the polymer material. The comprehensive quality is the best of all when the heating time is 35 s. At different mold warpage temperatures, volumetric shrinkage and warpage of the product increase quasilinearly with the melt temperature rising, but decrease with the packing pressure increasing. However, they fluctuated within a narrow range with the packing time increasing.

Key words: process parameter, shrinkage, warpage, Key words： large flat parts, rapid heat cycle molding (RHCM)

中图分类号:

TQ 320.66

王梦寒，李雁召，刘晓，夏知姿，陈明亮. 工艺参数对高光制品收缩及翘曲变形的影响[J]. 上海交通大学学报（自然版）, 2016, 50(02): 235-240.

WANG Menghan,LI Yanzhao,LIU Xiao,XIA Zhizi,CHEN Mingliang. Effect of Process Parameters on Shrinkage and WarPage of Rapid Heat Cycle Molding Plastic Part[J]. Journal of Shanghai Jiaotong University, 2016, 50(02): 235-240.

参考文献

［1］YAO D G, KIM B. Development of rapid heating and cooling systems for injection molding application［J］. Polymer Engineering and Science, 2003, 42(12): 24712481. ［2］CHEN S C, JONG W R, CHANG J A. Dynamic mold surface temperature control using induction heating and its effects on the surface appearance of weld line ［J］. Journal of Applied Polymer Science, 2003, 101: 11741180. ［3］WANG X X, ZHAO G Q, WANG G L. Research on the reduction of sink mark and warpage of the molded part in rapid heat cycle molding process［J］. Materials and Design, 2013, 47(2): 779792. ［4］CHEN M, YAO D G, KIM B. Eliminating flow induced birefringence and minimizing thermally induced residual stresses in injection molded parts［J］. PolymerPlastics Technology and Engineering, 2001, 40(4): 491503. ［5］刘东雷, 申长雨, 刘春太, 等. 工艺参数对高光注射成型制品翘曲的宏观影响［J］. 吉林大学学报(工学版), 2012, 42(3): 665671. LIU Donglei, SHEN Changyu, LIU Chuntai, et al. Macroeffect of process parameter on warpage of rapid heat cycle molding plastic part［J］. Journal of Jilin University(Engineering and Technology Edition), 2012, 42(3): 665671. ［6］刘东雷, 申长雨, 刘春太, 等. 基于响应曲面法与改进遗传算法的RHCM成型工艺优化［J］. 机械工程学报, 2011, 47(14): 5461. LIU Donglei, SHEN Changyu, LIU Chuntai, et al. Efficient process parameters optimization of rapid heat cycling molding technology based on response surface methodology and improved genetic algorithm［J］. Journal of Mechanical Engineering, 2011, 47(14): 5461. ［7］ERZURUMLU T, OZCELIK B. Minimization of warpage and sink index in injectionmolded thermoplastic parts using Taguchi optimization method［J］. Materials and Design, 2006, 27(10): 853861. ［8］OZCELIK B, SONAT I. Warpage and structural analysis of thin shell plastic in the plastic injection molding［J］. Materials and Design, 2009, 30(2): 367375. ［9］MATHIVANAN D, NOUBY M, VIDHYA R. Minimization of sink mark defects in injection molding process Taguchi approach［J］. International Journal of Engineering, Science and Technology, 2010, 2(2): 1322.

[1]	尤舒曼, 李杰, 赵亦希, 胡逸辉. 柔性翻边成形工艺参数研究[J]. 上海交通大学学报, 2021, 55(10): 1246-1254.
[2]	陈盼, 向锐, 魏小棋, 韦昌富, 王吉利. 考虑土水吸附效应的黏土收缩曲线方程[J]. 上海交通大学学报, 2020, 54(8): 866-872.
[3]	蔡佑林，范佘明，陈刚，梁珺，王立祥. 喷水推进收缩流泵导叶的水动力优化设计方法[J]. 上海交通大学学报, 2020, 54(1): 28-34.
[4]	冯巧波1,2，李永兵1，楼铭1，来新民1. 430铁素体不锈钢电阻点焊工艺性能[J]. 上海交通大学学报（自然版）, 2018, 52(12): 1649-1654.
[5]	舒赟翌，彭林法，易培云，来新民. 聚合物薄膜表面微结构的粉末热辊压成形工艺[J]. 上海交通大学学报（自然版）, 2017, 51(9): 1083-1089.
[6]	何雄君1，张晶1，何佳2，肖祥1，王进军3，董杰1. 焊接工艺参数对锚拉管焊接残余应力的影响 [J]. 上海交通大学学报（自然版）, 2017, 51(8): 1018-1024.
[7]	顾新建，于忠奇，宋洋. 工艺参数对高强度钢冷冲压界面温度影响分析[J]. 上海交通大学学报（自然版）, 2017, 51(4): 426-.
[8]	白彩娟1，刘静1，蒋晓瑜2，张国贤1，黄开宇1. 迭代去噪收缩阈值算法重构压缩全息[J]. 上海交通大学学报（自然版）, 2017, 51(12): 1435-1442.
[9]	贾红，张鹏. 玻璃纤维增强塑料低温收缩率的测量[J]. 上海交通大学学报（自然版）, 2016, 50(04): 502-505.
[10]	刘畅辉a，金隼a，来新民a，李飞b. 基于RSM-GA法的薄壁蜡模压蜡过程收缩率建模与优化[J]. 上海交通大学学报（自然版）, 2015, 49(09): 1380-1386.
[11]	蒋士正，许榕，陈启美. 基于变量选择-神经网络模型的复杂路网短时交通流预测[J]. 上海交通大学学报（自然版）, 2015, 49(02): 281-286.
[12]	陈巍，周雄辉，张汝珍，韩先洪，王会凤. 基于Kriging代理模型的注塑产品翘曲优化[J]. 上海交通大学学报（自然版）, 2010, 44(04): 588-0592.