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目前,以热烧结矿为主的高炉采用钟阀式或无钟炉顶设备还有很大困难,而改进部件堆焊层材质对延长钟式装料设备寿命来说则是一条简便易行的途径。七十年代以来,苏联就采用碳化钨组成合金浸润法堆焊钟式炉顶设备部件,在高压操作情况下延长了使用寿命。其中在许多用热烧结矿的高炉上也取得了明显的效果。1.苏联采用碳化钨浸润焊强化炉顶设备简况
At present, it is still very difficult to adopt a bell-type or bell-less top furnace for blast furnace dominated blast furnace, and improving the surfacing material of the component is a simple and convenient method for extending the service life of the bell charging equipment way. Since the 1970s, the Soviet Union has adopted tungsten carbide alloyed infiltration method to heave bell-type roof equipment components, which prolongs the service life under the condition of high-pressure operation. Among them many blast furnaces with hot sinter also achieved remarkable results. 1. The Soviet union used tungsten carbide wetting to strengthen the top equipment profile