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目前,我国大中型高炉开铁口,通常采用电动开铁口机,其钻进轨迹为曲弓形,开 出的孔道是一条弓形的倾斜孔道,很不利于铁口的维修,增加了泥炮的打泥阻力。新建、改建高炉大都采用新型的开铁口机。宝钢1号高炉以及正在建设的2号高炉都是新型两步法复合式全气动开铁口设备。宝钢2号高炉开铁口机是由中国冶金设备制造总公司组织,在外商指导下,购入部分关键部件,
At present, the opening of large and medium-sized blast furnace in our country usually adopts the electric iron turning machine, and the drilling trajectory is curved bow. The opening hole is a bow-shaped inclined hole, which is not conducive to the maintenance of the iron mouth, Play mud resistance. New, most of the renovation of blast furnace with a new type of iron machine. Baosteel No. 1 blast furnace and the No. 2 blast furnace under construction are all new two-step composite pneumatic pneumatics. Baosteel No. 2 blast furnace iron mouth machine is organized by China Metallurgical Equipment Manufacturing Corporation under the guidance of foreign investors, purchased some of the key components,