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磨削加工是机械加工中应用较为广泛的一种机械加工方式。在磨削加工的过程中,一些经过热处理工艺的渗碳淬火钢以及碳素工具钢材料在磨削加工中容易在加工材料表面形成磨削裂纹。这种磨削裂缝,会影响加工零件的力学性能,也影响加工零件的外观。为了控制高温对裂纹产生的不利影响,同时还要追求高的加工效率,可以在磨削加工过程中先使用粗砂轮和大进给量进行初步加工,最后几次加工工序采用细砂轮和小进给量、高转速。为了进一步控制高温,可以采用合理选择降温措施,例如喷油冷却、高压冷却等措施。还要合理的选用冷却液,科学的制定加工工序和标准要求。通常,在编制加工工序时,首先要考虑较大的加工工件转速,其次考虑进给量和砂轮转速。对此,本文针对磨削加工裂纹,分析了其影响工艺因素,在此基础上提出了防止磨削裂纹的磨削工艺改进措施。
Grinding is a kind of mechanical processing method widely used in machining. In the grinding process, some of the heat treatment of carburized hardened steel and carbon tool steel material in the grinding process is easy to form grinding cracks in the surface of the processed material. This grinding cracks, will affect the mechanical properties of machined parts, but also affect the appearance of machined parts. In order to control the adverse effect of high temperature on the crack and at the same time to pursue high processing efficiency, the rough grinding wheel and the large feeding amount can be used for primary processing in the grinding process. In the last several processing steps, the fine grinding wheel and the small feeding To the amount of high-speed. In order to further control the high temperature, you can use a reasonable choice of cooling measures, such as fuel injection cooling, high pressure cooling and other measures. Reasonable choice of coolant, the scientific development of processing procedures and standards. Usually, in the preparation of processing operations, we must first consider the larger workpiece speed, followed by feed and wheel speed. In this regard, this paper focuses on the cracks in the grinding process, analyzes the factors that affect the process, and on this basis proposed improvements to grinding process to prevent grinding cracks.