液压扳手上紧操作参考程序 翻译？ ASME-PCC-1 <压力边界螺栓连接法兰装配指南〉 讲了法兰螺栓上紧的一些方法和程序，现将部分章节摘录于此，希望大家帮忙翻译。 15 JOINT DISASSEMBLY When a significant number of bolts is loosened in rotational order, the elastic recovery of the clamped parts can result in excessive loads on the relatively few remaining bolts, making further disassembly difficult and sometimes causing galling4 between the nut and the bolt sufficient to result in torsional failure of the bolt as further loosening is attempted. The reported incidents of disassembly difficulties have typically involved: (a) flanges large than DN 600 (NPS 24); (b) flange thickness greater than 125 mm (5 in.);and (c) bolt diameter M45 (1 3/4 in.) and larger. Accordingly, use of a joint disassembly procedure may be desirable for joints involving components meeting all the criteria of paras. 15(a), (b), (c). Also, use of a joint disassembly procedure may be prudent for joints involving components for which high local strains could be detrimental (e.g., glass lined equipment, lens ring joint). 第15节主要讲螺栓连接法兰拆卸，强调螺栓不应一次拆下，希望大家结合实践进行翻译讨论。 15 接头拆卸 当相当数量的螺栓按次序被拆卸时，被夹紧件的弹性恢复会导致在较少剩余螺栓上产生过多载荷，使进一步拆松螺栓变得困难，有时在螺母和螺栓之间产生咬合，进一步尝试拆卸会导致螺栓扭转失效。以报告的螺栓拆卸困难事故典型包含： （a）法兰大于DN600（NPS24）； （b）法兰厚度大于125mm （5英寸）； （c）螺栓直径大于等于45（1 3/4英寸） 因此，对于包含以上所有因素的接头使用螺栓拆卸程序也许是最理想的。同时，对于接头包含的零件存在高的局部应力可能有害的情况（8字管线设备，透镜型垫片），使用螺栓拆卸程序也许是谨慎的。 欢迎大家指正！查看更多2个回答 . 1人已关注
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