某厂一台SZP10—13型蒸汽锅炉的水冷壁管,左侧前起第9、10两根弯曲变形,原因不明,割换新管后运行约三个月,令人惊异的是,恰恰又是这两根管子发生了与前次极其相似的变形,始引起重视,做了认真地检验分析。外观检查第9根管平行侧墙方向最大移位41mm,向炉内最大偏移39mm;第10根管在这两个方向的偏移分别为25mm和31mm。变形管及其他未变形管外壁有浮灰厚0.3mm左右,属正常现象;变形管无结垢,可排 A factory SZP10-13 steam boiler water wall tube, the first 9,10 from the left before the two bending deformation, the reason is unknown, after switching to run about three months after the new tube, amazingly, it is precisely It is these two tubes that occurred very similar to the previous deformation, the beginning of attention, did a careful test analysis. Visual inspection of the 9th tube parallel to the side wall maximum displacement of 41mm, the maximum deviation to the furnace 39mm; the first 10 tubes in these two directions offset were 25mm and 31mm. Deformation of pipe and other undeformed tube wall thickness of about 0.3mm float, is a normal phenomenon; deformation tube without scaling, can row