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工程机械工作装置结构件在工程机械作业时,承受拉、压、剪切、弯曲、扭转、交变冲击等多种形式的载荷。如果这些结构件材质和焊接存在缺陷或驾驶员操作不当,很可能引起其焊缝断裂。本文介绍结构件焊接坡口型式及存在的问题,通过坡口焊接试验分析焊缝断裂原因,并提出防止焊缝断裂的措施。
Construction machinery working device structural parts in construction machinery operations, under tension, pressure, shear, bending, torsion, alternating impact and other forms of load. If these structural materials and welding defects or improper driver’s operation, it is likely to cause the weld fracture. This paper introduces the welding groove type and the existing problems in the structural parts, analyzes the causes of the weld fracture by the groove weld test, and puts forward the measures to prevent the weld fracture.