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快装锅炉是企事业单位常使用的一种锅炉,在运行中常常发生锅炉炉门框与水冷壁管固定连接点焊处产生裂纹甚至焊缝拉脱引起水冷壁管损坏渗漏的事故。1原因浅析快装锅炉的炉门框一般情况下是直接点焊在水冷壁管上的。锅炉运行时,炉门的位置正位于炉膛高温处,炉门框的温度也很高。由于炉门框铁与水冷壁管的连接点焊处的焊透程度较差,热传导时热阻大,
Quick-loading boilers are often used by enterprises and boilers. In operation, it often happens that the boiler furnace door frame and the water-cooled wall pipe are fixedly connected to the spot welds to crack or even cause the weld-seam pull-off to cause the water-wall pipe damage and leakage. 1 reason analysis Quick-installed boiler furnace door frame is generally spot welding directly on the water wall tube. Boiler operation, the location of the furnace is located in the furnace at high temperature, the temperature of the door frame is also high. Due to the door frame iron and water wall tube connection spot welding at the poor penetration, thermal conductivity, thermal resistance,