不同加工方法和不同材料所能达到的表面粗糙度加工方法材料Ra 参 数 值 范 围 m0.0120.0250.050.1000.2000.400.81.63.206.3012.5025注射成型热塑性塑料PMMA(有机玻璃)0.0250.050.1000.2000.400.81.6ABS0.0250.050.1000.2000.400.81.6AS0.0250.050.1000.2000.400.81.6聚碳酸酯（PC）0.050.1000.2000.400.81.6聚苯乙烯（PS）0.050.1000.2000.400.81.63.20聚丙烯（PP）0.1000.2000.400.81.6尼龙0.1000.2000.400.81.6聚乙烯（PE）0.1000.2000.400.81.63.206.30聚甲醛（POM）0.050.1000.2000.400.81.63.20聚砜（PSU）0.2000.400.81.63.20聚氯乙烯（PVC）0.2000.400.81.63.20聚苯醚（PPO）0.2000.400.81.63.20氯化聚醚0.2000.400.81.63.20PBT0.2000.400.81.63.20热固性塑料氨基塑料0.2000.400.81.63.20酚醛塑料0.2000.400.81.63.20硅酮塑料0.2000.400.81.63.20压制和挤胶成型氨基塑料0.2000.400.81.63.20酚醛塑料0.2000.400.81.63.20嘧胺塑料0.1000.2000.400.8硅酮塑料0.2000.400.8DAP0.400.81.63.20不饱和聚酯0.400.81.63.20环氧塑料0.2000.400.81.63.20机械加工有机玻璃0.0250.050.1000.2000.400.81.63.206.30尼龙1.63.206.3012.50聚四氟乙烯(PTFE)0.81.63.206.3012.50聚氯乙烯1.63.206.3012.50增强塑料1.63.206.3012.5025注: 模塑增强塑料件Ra数值应相应增大两个档次。