一种大型齿轮焊接修复工艺的研究  

The Re-manufacturing Processes Research of a Mining Sprocket

作　　者：石伟刚 SHI Wei-gang(Gansu Mechanical&Electrical Vocational College,Tianshui 741000,China)

机构地区：[1]甘肃机电职业技术学院,天水741000

出　　处：《内燃机与配件》2022年第6期78-80,共3页Internal Combustion Engine & Parts

基　　金：甘肃机电职业技术学院:项目名称,大型构件多层多道焊对接焊缝焊接变形数值模拟分析,项目编号,GSJD2021B01。

摘　　要：采用"堆焊过渡层+喷焊表面层"的方法对磨损失效的齿轮进行了再制造,对富氩气体保护焊堆焊的过渡层进行了力学性能试验及微观组织分析,对氧乙炔火焰喷焊的表面层进行了硬度测试及耐磨损性能测试。试验结果表明,堆焊的过渡层具有良好的结合强度和冲击韧性,喷焊的表面层具有较高的表面硬度及耐磨损性能。这种"内韧外硬"的力学性能正好能够满足齿轮的使用要求,从而可以延长齿轮的使用寿命。The gear with wear failure was remanufactured by surfacing welding transition layer and spraying welding surface layer,the mechanical properties and microstructure analysis were carried out for a transition layer of argon-rich body welding,the hardness and wear resistance of the surface layer were tested for the oxyacetylene flame spray welding.The experiment shows that,the transition layer has good bonding strength and impact toughness,the surface layer of spray welding has higher surface hardness and wear resistance.The mechanical properties of the inner toughness and outer hardness can just meet the requirements of the sprocket,thus it can prolong the service life of sprocket.

关 键 词：齿轮 磨损失效 再制造 堆焊 喷焊 

分 类 号：TG457.25[金属学及工艺—焊接]