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川崎钢铁公司计划重建千叶6号高炉,时间为60天,这将创高炉重建时间最短的纪录。该高炉于3月24日停炉,次日开始重建,可望于5月底再次开炉。重建内容积与该炉相同的高炉一般需要120天。例如,1990年重建水岛3号高炉(内容积4359m~3),用110天时间,而千叶6号高炉内容积为4500m~3。短时间重建6号高炉要归功于“大块环形装配法”的应用。一般来说,在高炉外壳切割并去除后,高炉外壳钢板在现场一块一块地焊接起来。但是,在大块环形装配法中,4大块环形板(看上去象巨大的圆柱面),在
Kawasaki Steel plans to rebuild Chiba No. 6 blast furnace for a period of 60 days, which will set a record for the shortest blast furnace reconstruction time. The blast furnace shutdown on March 24, the reconstruction began the next day, is expected to be opened again by the end of May furnace. It takes 120 days to reconstruct the blast furnace with the same volume as the furnace. For example, in 1990, Shuidao No.3 blast furnace (inner volume 4359m ~ 3) was rebuilt for 110 days and Chiba No. 6 blast furnace had an inner volume of 4500m ~ 3. Short-term reconstruction of the No. 6 blast furnace owes much to the application of the “Bulk Ring Assembly Method.” In general, blast furnace shell plates are welded together in the field after the blast furnace shell is cut and removed. However, in a large ring assembly method, four large annular plates (which look like huge cylindrical surfaces)