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屈树旺:我师傅告诉我,喷砂处理完用小毛巾一抛,能挂住,就是合格了[图片] (2018-06-19 13:56)
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屈树旺:我师傅告诉我,喷砂处理完用小毛巾一抛,能挂住,就是合格了(2018-06-19 13:56)
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elcometer专家:三种方法1.粗糙度对比板对比,只评估等级2.针式粗糙度仪,只能测试平面或者外圆弧,有指针或数显,测量一个区域内十多个点求取平均值3.锚纹纸(拓片纸)法,将被测表面粗糙度拓印下来,用厚度表测量锚纹纸厚度(减掉50微米)为被测面的粗糙度数值。(2018-01-06 23:13)
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