据国内外已有资料的介绍,硬质合金金相试样的制备,需采用不同粒度的钻石粉(或碳化硼粉)进行多次研磨和抛光。这些磨料价格昂贵,有些尚待进口,给金相制样带来了阻碍。为此,我们采用金相砂纸研磨和腐蚀抛光,此法步骤简单,效果良好,现将制作过程介绍如下,供大家参考并请指正。1.先将硬质合金试样先在绿色碳化硅砂轮上细致地磨平。2.把280~#金相砂纸贴在抛光盘上,转速约为800～1000转/分,进行粗磨。3.换上03~#砂纸(转速不变),改换磨痕方向,进 According to domestic and foreign information has been introduced, the preparation of carbide samples, the need to use different sizes of diamond powder (or boron carbide powder) for multiple grinding and polishing. These abrasives are expensive and some are yet to be imported, hindering the metallographic sample preparation. To this end, we use metallographic sandpaper grinding and corrosion polishing, this method is simple, the effect is good, the production process is introduced below, for your reference and please correct me. 1. Carbide samples first finely ground on a green silicon carbide grinding wheel. 2. The 280 ~ # metallographic sandpaper attached to the polishing plate, the speed is about 800 ~ 1000 rev / min, rough grinding. 3. put 03 ~ # sandpaper (speed unchanged), wear marks change the direction into