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我公司首次焊接架桥机起重小车的“∏”型梁时,X射线探伤显示4条主焊缝均有不同程度的焊接裂纹,裂纹都在焊缝收弧处沿熔合线向里延伸。
For the first time, our company welded the “Π” beam of the overhead traveling crane. The X-ray inspection revealed that the four main welds all have different degrees of welding cracks. The cracks are all along the weld line extend.