汽车轮罩护板选材方案探讨

简要介绍了四种常用的轮罩护板材料，并从零件重量、吸音降噪效果、使用寿命、精度、成本及模具费用等方面对四种轮罩护板进行了综合比较，同时结合车型档次、目标市场和产量等给出了性价比最佳的五种选材方案．即：对于低档车，产量小或者目标市场为低温市场者用HDPE材料，产量大或者目标市场为非低温市场者用PP＋EPDM材料；对于中档车，产量小或者目标市场为低温市场者，前轮用HDPE材料，后轮用PP＋PET材料，产量大或者目标市场为非低温市场者，前轮用PP＋EPDM材料，后轮用PP＋PET材料；高档车则用PP＋PET材料．

Discussion of Methods to Select Material for Wheel-house

Four materials of wheel-house which Comprehensive comparison for the four different damping, service life time, dimension tolerance are in common use are introduced in brief. materials are made regarding part weight, noise and tooling cost. Five solutions are recommended based on car category, target market and volume of the model. For low class economical car, HDPE material is suggested for low volume model or low temperature service environment. PP ＋ EPDM material is recommended for high volume model or non low temperature service environment. For middle class car, HDPE material for front wheel and PP ＋ PET material for rear wheel are recommended for low volume model or low temperature environment. PP ＋ EPDM material for front wheel and PP ＋ PET material for rear wheel for high volume model or non low temperature service environment are recommended. For luxury car, PP ＋ PET material is recommended.