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淬火后需要磨削加工的制件,如进行不适当的磨削时,将产生磨削烧伤。所谓磨削烧伤,就是表层发生不均匀的退火,使淬火件表面发生软化现象,破坏了工件的表层组织,影响其使用性能和寿命。因此,为了防止磨削烧伤现象的发生,有必要弄清其发生原因和防止方法。 1.磨削烧伤的原因 磨削烧伤是由磨削过热造成的。造成磨削过热的原因是砂轮选得太硬、粒度太细、砂轮磨钝或使用孔眼堵塞的砂轮。由于磨削时,磨削深度太大,纵向进
After quenching the need for grinding parts, such as improper grinding, will have a grinding burn. The so-called grinding burn, is uneven surface annealing occurs, quenching the surface softening phenomenon, destroying the surface of the workpiece organization, affecting its performance and life expectancy. Therefore, in order to prevent the occurrence of grinding burns, it is necessary to clarify the causes and prevention methods. 1. Causes of grinding burns Burning burns caused by grinding overheating. The cause of grinding overheating is that the grinding wheel is too hard, the grain size is too fine, the grinding wheel is blunt or the hole is clogged. As grinding, the grinding depth is too large, vertical into