一、工件于检查前的准备 检查对象的准备,决定于检查的目的。 在检查表面时,大部分限于用细刚玉和金刚砂纸以手工修整的表面。在测量硬度,特别是使用萧氏硬度计时,被测量的表面上必须去除机械加工的痕迹,通常是用砂轮以手工来进行的。 在制备宏观磨片和显微磨片检查用的试样时, First, the workpiece in preparation for inspection Preparation of inspection objects, decided to check the purpose. Most of the surface inspection was done on surfaces that were hand trimmed with fine corundum and emery paper. In measuring hardness, especially with the Shore Hardness Tester, traces of machining must be removed from the surface to be measured, usually by hand using a grinding wheel. In the preparation of macro-abrasive and microscopic abrasive inspection of the sample,