Under tensile loadings, the failure of the expanded joint was found to involve the pull-off damage of the tube and tubesheet connection, while the failure of the welded joint involved mainly a shear break of the welding. 在拉力作用下,胀接接头的破坏主要是管子与管板接触面间的拉脱破坏,而焊接接头的破坏主要为焊缝的剪切破坏。
Fault Analysis of Leakage at the Expanded Tube Joint of a Marine Main Boiler Superheater and Measures Taken for Its Elimination 某船用主锅炉过热器胀口处渗漏故障分析与排故措施