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通过对事故现场勘查,检验测试了失效部件的焊接状况,验证计算了焊缝强度,分析了断口及焊缝微观组织的状态,多维度展开事故调查分析并获得结论。
Through the investigation of the scene of the accident, the welding condition of the failed parts was tested, the strength of the weld was verified and the microstructure of the fracture and the weld was analyzed. The investigation and analysis of multi-dimension accident were carried out and the conclusion was drawn.