控制长玻纤塑件翘曲变形的工艺方法  

Process method for controlling warping deformation of long glass fiber plastic parts

作　　者：李明 李仁勇 苏童 LI Ming;LI Renyong;SU Tong(Chongqing Changan Automobile Co.,Ltd.,Chongqing 401120,China)

机构地区：[1]重庆长安汽车股份有限公司,重庆401120

出　　处：《模具工业》2024年第10期56-62,共7页Die & Mould Industry

摘　　要：以结构复杂、尺寸较大且有尺寸精度要求的汽车仪表板骨架为例,介绍了一种控制长玻纤塑件翘曲变形的工艺方法,在CAE分析环节进行多种尝试以确定较优的浇口开启顺序,在注射生产调试环节遵循“模具温度低、保压时间长”的原则。该方法简单易操作,已在多个车型上验证,缩短了新产品的开发周期,节省了试制成本,可以为同类塑件的前期开发提供参考。Taking the automobile instrument panel frame with complex structure,large size and di-mensional accuracy requirements as an example,a process method for controlling the warping de-formation of long glass fiber plastic parts was introduced,the various attempts were made in CAE analysis to determine the optimal opening sequence of gate,and the principle of"low mould tem-perature and long pressure holding time"was followed in injection production and debugging.The method was simple and easy to operate,and had been verified on a number of models,shortened the new product development cycle,saved the capital cost of trial production,which could provid-ed references for the early development of the similar plastic parts.

关 键 词：PP+LGF20 翘曲变形 模具温度 保压时间 

分 类 号：TG76[金属学及工艺—刀具与模具] TQ320.662[化学工程—合成树脂塑料工业]