高速钢拉刀在热处理过程中产生裂纹,大多是由于以下几方面原因所致:1.没能根据产品的具体情况(如直径粗细、形状复杂程度、碳化物均匀度等)制定正确的热处理工艺规程和有效的预防措施;2.操作不当;3.设备故障。如仪表失灵、加热设备运行时损坏等原因造成产品过热或引起二次淬火; High-speed steel broaches in the heat treatment process cracks, mostly due to the following reasons: 1. Can not be based on the specific circumstances of the product (such as diameter, shape complexity, carbide uniformity, etc.) to develop the right heat treatment process Procedures and effective preventive measures; 2. improper operation; 3. equipment failure. Such as instrument failure, heating equipment damage caused by running and other causes of overheating or cause secondary quenching;