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众所周知,在淬火工件的磨削加工中,由于工艺参数控制的失当和冷却不良等原因,磨削热可能使工件表面在短时间内上升到很高的温度,工件在这样的温度下不仅可能发生回火,而且有时会发生二次淬火甚至局部熔化。长期以来,对于高硬度淬火零件的磨削中,人们是力图通过控制磨削参数和冷却来控制零件表面温度,不至于在磨削中产生硬度下降、磨削裂纹和烧伤等缺陷。但是,人们也想到,既然磨削热可导致淬火零件的二次淬火,那么通过工艺控制能否实现利用磨削热对未淬火零件进行表面淬火呢?近年来不少研究指出了这种可能性并对其工艺参数的选择进行了探讨。
As we all know, in the quenching of the workpiece grinding, due to improper control of process parameters and poor cooling and other reasons, the grinding heat may make the workpiece surface in a short period of time rose to high temperatures, the workpiece at such temperatures may not only occur Tempering, and sometimes secondary quenching occurs even partial melting. For a long time, people try hard to control the surface temperature of parts by controlling the grinding parameters and cooling without grinding hardness, grinding cracks and burns. However, it is also thought that, since the grinding heat can lead to quenching parts of the secondary quenching, then the process control can achieve the use of grinding heat on the quenched parts surface hardening do? In recent years, many studies have pointed out that this possibility And the choice of process parameters is discussed.