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自五十年代末前苏联最先在高炉采用冷却壁以来,冷却壁经过4个阶段的发展已高度完善。最新型式的铸铁冷却壁装在热负荷低的高炉段能用好几个炉役。但最好的铸铁冷却壁在高炉热负荷最高的部位只能完整地用上一个炉役。炉腰及炉身下部热流密度高、高温冲击大、铸铁冷却壁边角上材料损坏严重,冷却水管常常败露于外。其主要原因是:1)铸造工艺要求为埋设件尺寸留出一定裕量;2)镶铸管有弯曲容差及安装余隙。因此,即使是第4代铸铁冷却壁也难以在最高热负
Since the early Soviet occupation of the stave in the blast furnace in the late 1950s, the stave has been highly developed through four stages. The latest type of cast iron cooling wall installed in the heat load of the blast furnace can use several furnaces. However, the best cast iron stave can only be fully used on a furnace at the site where the blast furnace heat load is the highest. The lower part of the furnace waist and heat flux density, high temperature impact, cast iron cooling wall corner of the material damage, cooling water pipe often exposed. The main reasons are: 1) the casting process requires setting a certain margin for the size of the embedded parts; 2) the cast pipe has bending tolerance and installation clearance. As a result, even the 4th generation cast iron cooling stave can not withstand the highest heat losses