- Work Instruction
Itemcode Version
973317337
000
Repair proposal for QATAR feeder bucket
1. The original welds have to be removed by grinder, ground to expose the metallic luster, prohibited harm the base material, carefully check near the base material, to ensure that no crack extension.
2. Re-welded and ground to smooth contour, no porosity, undercut, slag inclusion, side
welding such as defects, extinction arc should be filled crater, at the crater should be ground to smooth contour, to ensure that no crater cracks.
3. Use the low hydrogen alkaline electrode E4315 because of better crack resistance.
Welding current I = (30 ~ 60) D,
I is the welding current (A), D is the electrode diameter (mm).
Do not copy, reproduce or distribute this document without written consent from CLX Electronically generated Document and valid without signature gültig.
Liebherr CLX -Specification
1/2
- Work Instruction
Itemcode Version
973317337
000
卡塔尔提升料斗焊缝开裂修复方案
1、 用磨光机将原有焊缝磨掉，打磨至露出金属光泽，严禁伤害母材，仔细检
查附近母材，确定无延展裂纹。
2、 重新焊接，要求焊缝平滑过渡，无气孔、夹渣、咬边、焊偏等超标缺陷，
收弧时应填满弧坑，弧坑处应打磨至平滑过渡，确定无弧坑裂纹。 3、 焊接时选用抗裂性能较好的低氢型碱性焊条E4315（J427）。
焊接电流I=(30~60)D, I为焊接电流（A）,D为焊条直径(mm)。
Do not copy, reproduce or distribute this document without written consent from CLX Electronically generated Document and valid without signature
Liebherr CLX –Specification 2010
2/2
Repair proposal for QATAR feeder bucket
