In abrasive belt rail grinding, understanding the abrasive belt wear mechanisms is important for improving grinding accuracy and abrasive belt service life. Taking a single ceramic grit in a stable grinding state as an example, this study investigated the critical transition conditions and recognition methods between the different wear modes. Based on the crack growth equation, the critical transition condition from abrasion to fracture was modeled by calculating the stress around the cracks hiding in the grit tip. The transition condition between fracture and pull-off was determined by comparing the external stress around the grit root and the bonding strength of the resin binder. These critical conditions were verified by single grit scratching experiments and the improved S_c wear map method.

在砂带导轨磨削中，了解砂带磨损机理对于提高磨削精度和砂带使用寿命具有重要意义。本研究以处于稳定磨削状态的单个陶瓷磨粒为例，研究了不同磨损模式之间的临界转变条件和识别方法。基于裂纹扩展方程，通过计算隐藏在磨粒尖端的裂纹周围的应力来模拟从磨损到断裂的临界过渡条件。通过比较砂砾根部周围的外部应力和树脂粘合剂的结合强度来确定断裂和拉脱之间的过渡条件。这些临界条件通过单砂粒划痕实验和改进的S _c磨损图方法进行了验证。