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机械零件(如齿轮等)在磨削加工的过程中,或在随后的存放期间以及在使用初期,往往会出现微裂纹,这种裂纹称为磨削裂纹。磨削裂纹的出现影响了产品质量和使用的可靠性,而在研究磨削裂纹,控制产品质量和失效分析时,又常常要测量磨削裂纹的深度。目前所采用的方法是传统的金相测量法,本文提出一种新的测量方法——断口法。该方法准确度高,方法简易可行。为磨削裂纹机理的研究开辟了新的途径。一磨削裂纹在零件内部的扩展特点零件在磨削过程中,当单条裂纹萌生后,其裂纹的扩展方式遵循一般裂纹的扩展情况,即以裂纹源为核心,沿零件表面向核心两侧(对于垂直裂纹,即垂直
Mechanical parts (such as gears, etc.) are often micro-cracks during grinding, or during the subsequent storage and early use, called cracks. The appearance of grinding cracks affects the quality of the product and the reliability of its use. In the study of grinding cracks, quality control of products and failure analysis, the depth of grinding cracks is often measured. The current method used is the traditional metallographic measurement method, this paper presents a new measurement method - fracture method. The method has high accuracy and the method is simple and feasible. It has opened up a new way for the study of grinding crack mechanism. A grinding crack in the parts of the expansion characteristics of the parts in the grinding process, when a single crack initiation, the crack propagation method to follow the general expansion of the crack, that crack source as the core along the surface of the part to the core on both sides ( For vertical cracks, vertical