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本文分析了锉板锻造和热处理的多种工艺方案后认为,作为锉板材料的GCr15钢是白点敏感性的钢种之一?采用钢锭锻造后的毛坯厚度在38毫米以上时,须要采用专门的锻造热规范。此外还得出如下结论:1.在采用H-75作淬火加热设备时,950℃是最合适的加热炉温,加热时间可按0.7分/毫米左右计算;2.淬火冷却时间,20—30℃水中冷却120秒完全足够,但应及时进行油冷;3.减少大型零件破裂危险性的基本措施是a.降温淬火;b.及时回火,减少淬火和回火的间隔时间;c.采用二次回火的工艺;4.返修的锉板一定要进行高温回火,对于大型零件,在300℃以下,加热速度不宜大于150℃/小时。附图15幅，表1个，参考文献5篇。
This paper analyzes a variety of raschel forging and heat treatment of the program after that, as the material of the rasp GCr15 steel white point sensitivity of the steel used forging after the ingot forging blank thickness of 38 mm or more, the need to use specialized Forging thermal specifications. In addition, the following conclusions can be drawn: 1. In the use of H-75 for quenching equipment, 950 ℃ is the most suitable heating furnace temperature, heating time can be calculated at 0.7 points / mm; 2 quench cooling time, 20-30 ℃ water cooling 120 seconds fully adequate, but should be timely oil cooling; 3 to reduce the risk of large parts of the rupture of the basic measures is cooling quenching; b tempering in a timely manner to reduce the quenching and tempering interval; c using Secondary tempering process; 4 rework of the file board must be high temperature tempering, for large parts, below 300 ℃, the heating rate should not be greater than 150 ℃ / hour. Figure 15, Table 1, 5 references.