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马鞍山钢铁公司1958年底及1959年初先后建成了第二、三轉爐车间,各有6吨直筒型碱性侧吹转炉5座。基本上采用了5273号定型设计。投入生产后发现炉子托圈及转动設备都太薄弱,設备事故不断发生;经局部加固,仍无法維持生产,因此进行改建。为了能利用原有的30吨吊車以及部分传动设备,决定将原有的炉体拆除,另装3吨涡鼓型转炉。改建工作包括新作炉子、托圈、改作传动设备的部件等等,均由公司自力进行。已有一座爐子改好,进行了试驗,
Maanshan Iron and Steel Company in late 1958 and early 1959 has completed the second and third converter workshop, each with 6 tons of straight-type side-blowing converter 5. Basically adopted the 5273 stereotypes design. After putting into production, it was found that the furnace support ring and the rotating equipment were too weak and the equipment accidents occurred constantly. After local reinforcement, it was still unable to maintain production and therefore the reconstruction was carried out. In order to take advantage of the original 30-ton cranes and some transmission equipment, decided to demolition of the original furnace, another 3-ton rotary drum converter. Reconstruction work, including the new furnace, care ring, changed to the transmission equipment parts, etc., by the company on its own. A furnace has been improved, conducted a test,