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在齿轮表面磨削加工中,有时会出现各种形状的裂纹,造成废品。裂纹虽然在磨削时出现,但是造成裂纹的原因有热加工方面的,如渗碳淬火的温度,碳化物,金相组织的形状大小,回火温度和时间,零件淬硬层的内应力,硬度大小,硬度分布,含碳量的浓度等因素;还有冷加工方面的,如切削用量大小,砂轮粒度和硬度,冷却液的使用,金刚石的锋利程度,
In the gear surface grinding, sometimes there will be various shapes of cracks, resulting in waste. Although cracks occur during grinding, the causes of cracks include thermal processing, such as carburizing and quenching temperature, carbide, shape and size of metallographic structure, tempering temperature and time, internal stress of the hardened layer of the part, Hardness, hardness distribution, the concentration of carbon content and other factors; there are cold-working aspects, such as the amount of cutting size, grinding wheel size and hardness, the use of coolant, the sharpness of diamond,