一种适合硬膜抗磨粒磨损性能试验方法的研究

提出了一种适合评估硬膜材料抗磨粒磨损性能试验的新方法 ,并研究了各种因素对硬膜抗磨粒磨损试验结果的影响。试验发现 ,硬膜的磨损量与磨损时间以及试棒转速成正比 ;当磨料粒度在一定的范围内变化时 ,磨损量与磨料的粒度成正比 ;当磨料的粒度超过某一临界尺寸后 ,磨损速度变化不大。在粒度为 1 80目时 ,磨损试验的效果最佳。在有饱和水溶液的磨料中 ,同时存在着磨料磨损和气蚀磨损两种磨损方式。

A New Method for Evaluating Abrasive Wear Resistance of Hard Coatings

A new method for evaluating the abrasive wear resistance of hard coatings is introduced. Experiments indicated that the wearing capacity increased linearly with test time. The wear value increased with specimen rotation speed. When the abrasive grain was smaller than 180 mesh the wear value increased markedly with increasing particle size. This influence diminished on further increasing the particle size. There were abrasive and cavitation wears when tests were carried out in abrasive saturated with water.