矿用汽车后桥壳体修复工艺的探索及应用

摘要

针对矿用汽车后桥壳体修复工艺中存在的焊接材料和焊机不易选择、焊件表面较难清理干净、坡口形式与裂缝尺寸不匹配、焊接工艺处理不当等疑难问题,提出了选用低氢钠型碱性焊条及直流逆变焊机等解决方案。经用户使用检验,修复后的车辆连续运行30000km以上均未出现异常,节约了维修成本。%Regarding the problem of choose equipment, surface clearing, groove type and mismatch of the size and technique treatment in the repairing of rear axle housing in mining truck, the solution of low hydrogen sodium alkaline electrode and dc arc welding inverter was put forward. After test by customer, there no problem accuring in the running of 30 000 km, and the maintenance cost was saved.