开铁口机是完成打开高炉铁口操作的关键设备。本文介绍了在首钢新３￣＃高炉投入使用的ＳＧＫ型遥控全液压开铁口机的性能、特点及设计中采用的新技术、新结构。实践证明，这种开铁口机具有良好的使用效果和经济效益，完全可以替代进口产品，具有推广价值。 Open iron machine is the key to open the operation of the blast furnace mouth. This paper introduces the performance, characteristics and design of new technology and new structure of SGK remote hydraulic full-iron turning machine put into operation in Shougang’s new 3 # blast furnace. Practice has proved that this type of iron machine with a good use of the results and economic benefits, can replace imported products, with the promotion of value.