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1988年11月19日,辉县市孟庄乡某联合体开办的化工厂,一台KZG2—8型快装锅炉的锅筒底部发生裂纹泄漏,被迫停产,经济损失达十多万元。经检查,发现在距前管板1050毫米处锅筒底部有轻微凹陷,面积为104×250毫米~2,深为4毫米,并有一条长150米,宽1.3毫米的环向可见裂缝,在钢板水侧经打磨后,发现在这条裂缝的两边有八条细微的裂纹。裂缝呈平断口,表面光滑有不规则的台阶,在个别部位可以观察到裂缝源和裂纹的前沿线。锅炉在过热变形不大的情况下出现裂纹是
November 19, 1988, Huixian Mengzhuang Township, a coalition of chemical plants, a KZG2-8-type boiler boilers at the bottom of the crack leak occurred, forced to stop production, the economic loss of more than 100,000 yuan. Upon examination, it was found that there was a slight depression in the bottom of the drum 1050 mm from the front tube sheet, an area of 104 x 250 mm2, a depth of 4 mm and a ring-shaped visible crack of 150 m in length and 1.3 mm in width at After grinding the water side of the steel plate, eight fine cracks were found on each side of the crack. Fractures were flat fracture, smooth surface with irregular steps, in some parts of the cracks can be observed before the source line and cracks. Boiler deformation is not overheating in the case of cracks is