【摘要】 利用 MLS- 2 3型磨粒磨损试验机和 HR- 1 50 D型硬度计研究了深冷处理前后 T1 2高碳钢磨粒磨损性能的变化 ,并采用扫描电子显微镜对其微观形貌进行了观察和分析 .研究结果表明 ,T1 2高碳钢在深冷处理后的硬度提高了 1～2 H RC,耐磨性提高了 50 %～ 60 % .其原因是深冷处理可以减少有害裂纹的产生 ,从而改善耐磨性 .更多还原

【Abstract】 The variations in the abrasive resistance of high carbon steel (T12) before and after cryogenic treatment were investigated using an abrasive wear test rig (MLS 23) and hardness tester (HR 150D). The worn surface morphology of the steel was examined by means of scanning electron microscopy (SEM). The result shows that the hardness ( HRC ) of high carbon steel (T12) increases slightly and the abrasive wear resistance by 50%～60% after cryogenic treatment. It was supposed that cryogenic treatment could decrease harmful cracks and hence improve the wear resistance.更多还原