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目前国内对不停炉处理炉外高压管道焊缝砂眼泄漏主要有三种方法。1.手工捻缝通过手锤和凿子敲打,使金属受力发生变形,把金属内的小孔和砂眼挤死。采用这种方法要求管壁较厚,砂眼直径小于0.4mm,泄漏点周围空间大,便于抡锤。2.带“帽子”在泄漏点焊上一个小阀门,阻止工质的泄漏。采用这种方法要求管壁具有一定厚度,泄漏点位置好,可以进行焊接工作。
At present, there are mainly three ways to deal with the leak of the weld bead outside the furnace high pressure pipe in China. 1. Manual caulking by hand hammer and chisel beat, the deformation of the metal force, the metal holes and trachoma die. Thick wall thickness is required by this method. The diameter of the trachoma is less than 0.4mm, and the space around the leak point is large, which is convenient for the hammer. 2. With a “hat” in the leak spot welding a small valve to prevent leakage of working fluid. Adopting this method requires that the wall of the pipe has a certain thickness, the location of the leakage point is good, and the welding work can be performed.