挖掘机传动组件的修复

Welidng repairing of the excavator's assembly

某电动挖掘机在使用过程中,铲斗传动被动轴、轴孔、齿轮内孔产生磨损,齿轮轮毂发生裂缝,采用焊条电弧焊的方法,根据制造规范,焊接ZG45Ⅱ齿轮、滚筒、45号钢轴时,宜选用碱性低氢焊接材料,补焊时用J507焊条进行焊接。为了控制开裂倾向,在焊接打底层时采用φ3.2不锈钢焊条A302进行打底,采用J507填充,成功地修复该类磨损和裂纹。

Upon the operation of excavator,the bucket＇s idler shaft,holes,inner holes of gear wear, gear hub appears crack.This paper adopts shielded metal arc welding,in accordance with manufacturing code ,welding the ZG45II gear, roller,45 steel shaft, selects low toxicity and low hydrogen electrodes,welds with J507 electrodes in repairing welding.With controlling the cracking tedency,adopts backing welding with 6 3.2 A302 stainless electrodes, filling welding with J507, and repairs the wears and cracks successfully.