水砂纸

4组样品分别采用100目、280目、400目、800目水砂纸进行打磨，然后采用如下方法对钛片进行处理：A组：单纯的机械处理；

Samples in four groups were polished by waterproof abrasive paper of 100 meshes , 280 meshes , 400 meshes and 800 meshes respectively , and then treated respectively as the following . Group A : treated simply by machinery .

每个试样的测试面经碳化硅水砂纸逐级磨光至1000目。

The study surface of each specimen was polished to # 1000 by silicon carbide abrasive paper .

通过定量分析不同粒度水砂纸磨光后在钢试样表面造成的表面质量差异，找到适合不同硬度试验需要的表面质量的具体获取方法。

Different obtaining methods suitable for different hardness experiments are explored in this paper . These methods are acquired via quantitative measurement of surface quality differences caused by water proof abrasive papers with various degree of roughness on the steel samples .