一、前言地质工程钻机立轴在野外工地恶劣的环境下使用，要求其具有一定的强度、疲劳强度及良好耐磨性和抗咬合能力，也要求它有较好的抗腐蚀能力。国内地质工程钻机立轴一般采用调质热处理和高频表面淬火。虽然高频表面淬火能提高表面硬度，增加耐磨性，但变形不易控制，降低了精度，抗大气及泥浆水 First, the preface Geological engineering rig vertical shaft used in the harsh environment of the field, requiring it to have a certain strength, fatigue strength and good wear resistance and anti-bite ability, but also requires it to have better corrosion resistance. Domestic geological engineering drilling rig vertical axis quenching and tempering heat treatment and high-frequency surface hardening. Although high-frequency surface hardening can improve the surface hardness and increase wear resistance, deformation is not easy to control, reducing accuracy, anti-atmospheric and muddy water