Ra与Rz对照表表面光洁度▼1▼2▼3▼4▼5▼6▼7表面粗糙度Ra502512.56.33.21.60.8Rz200100502512.56.36.3表面光洁度▼8▼9▼10▼11▼12▼13▼14表面粗糙度Ra0.40.20.10.050.0250.012Rz3.21.60.80.40.20.10.05表面特征表面特征表面粗糙度(Ra)数值加工方法举例明显可见刀痕Ra100、Ra50、Ra25粗车、粗刨、粗铣、钻孔微见刀痕Ra12.5、Ra6.3、Ra3.2精车、精刨、精铣、粗铰、粗磨不见加工痕迹,微辩加工方向Ra1.6、Ra0.8、Ra0.4精车、精磨、精铰、研磨暗光泽面Ra0.2、Ra0.1、Ra0.05研磨、衍磨、超精磨、抛光Ra与Rz对照表表面光洁度▼1▼2▼3▼4▼5▼6▼7表面粗糙度Ra502512.56.33.21.60.8Rz200100502512.56.36.3表面光洁度▼8▼9▼10▼11▼12▼13▼14表面粗糙度Ra0.40.20.10.050.0250.012Rz3.21.60.80.40.20.10.05表面特征表面特征表面粗糙度(Ra)数值加工方法举例明显可见刀痕Ra100、Ra50、Ra25粗车、粗刨、粗铣、钻孔微见刀痕Ra12.5、Ra6.3、Ra3.2精车、精刨、精铣、粗铰、粗磨不见加工痕迹,微辩加工方向Ra1.6、Ra0.8、Ra0.4精车、精磨、精铰、研磨暗光泽面Ra0.2、Ra0.1、Ra0.05研磨、衍磨、超精磨、抛光