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在一次针对流动式起重设备结构件进行焊接工艺评定时,评定人员发现拉伸试件焊缝断裂,焊缝断口处有白点。针对这一质量缺陷,该焊接工艺被评定为不合格。我们结合生产实际,对焊缝中白点形成原因进行分析,并制定了有针对性的工艺措施,确保了该种起重设备结构件的制造质量。1,原焊接工艺该种起重设备结构件的拉伸试件结构如附图所示。
During a welding procedure qualification of a mobile crane structure, assessors found that the tensile test specimen fractured and white spots appeared at the weld fracture. In response to this quality defect, the welding process was assessed as unacceptable. We combine the actual production, the white spot in the weld analysis of the causes, and developed a targeted process measures to ensure that the quality of the construction of lifting equipment components. 1, the original welding process The structure of the lifting device tensile specimen structure shown in the figure.