前言我厂生产的电机车牵引从动齿轮,材料为42CrMo,模数12,齿顶圆直径868毫米,齿宽为140毫米,单重311公斤,热处理技术要求:齿面、齿根及齿根圆角部分淬硬层均为2—4毫米,硕度 HRC52—57,为达到上述技术要求,我们从1975年采用中频埋油淬火工艺,经过八年多的应用,对埋油淬火工艺有如下体会。 Foreword I produced the electric car traction driven gear, material 42CrMo, modulus 12, tip circle diameter of 868 mm, tooth width 140 mm, single weight 311 kg, heat treatment technology requirements: tooth surface, roots and roots Hardened part of the fillet part of 2-4 mm, HRC52-57, in order to meet the above technical requirements, we use the medium frequency buried oil quenching process from 1975, after more than eight years of application, the embedding oil quenching process is as follows Experience.