大型浇注薄壁件的翘曲优化

Warpage Optimization of Large Casting Thin-Walled

研究了浇注系统和成型工艺参数对薄壁件翘曲变形的影响,对制件浇注系统进行了优化,再在优化后的浇注系统基础上以模具温度、熔体温度、冷却时间、注射时间、保压压力和保压时间为计算工艺参数,在三维流动分析的研究基础上,对制品缺陷进行了CAE分析,通过采用正交实验法,进行均值分析、极差分析及方差分析,并结合各因素效应曲线图,得出了最优工艺参数组合及各成型工艺参数对翘曲变形影响的主次关系及影响程度。CAE分析与试验结果表明,塑件的翘曲量从1.861mm减少到0.6282mm。

It studied the effects of the gating system and thin wall molding process parameters on warpage of parts casting system, and then optimized the gating system, and on the basis of the optimized mold temperature, put melt temperature, cooling time, injection time, holding pressure and dwell time as the calculation process parameters, and on the study of three-dimensional flow analysis, CAE far product defects were analyzed by using orthogonal experiment, and carried out with the mean value, range analysis and variance analysis, combined with various factors effect curves, obtained the optimal combination of process parameters and various molding pracess parameters and effect relationship between the level of primary and secondary effects on the warpage. CAE analysis and experimental results show that the amount of warpage of plastic parts is reduced from 1.861mm to 0.6282mm.