贵阳某厂的480kW井式气体渗碳炉经使用数年后,由于炉盖水冷槽部位焊缝锈腐,引起多处漏水,严重地影响工件的渗碳。该厂虽经多次补焊效果不佳,补焊后通水试漏时并不漏水,而在热炉试验时发现漏水影响碳势控制。此后越补焊漏的地方越多,至使漏水问题 After a few years of use, the 480kW pit-type gas carburizing furnace in a factory in Guiyang, due to the corrosion of the weld in the cooling water tank of the furnace cover, causes many leakage and seriously affects the carburization of the workpiece. Although the plant after many poor welding effect, repair leaks through the water leakage test does not leak, but found in hot furnace test leakage affect the carbon potential control. Since then, the more welding repair place, to make leakage problems