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当前,我国钢材市场上薄板的缺口量很大,叠轧薄板轧机仍在高负荷地运转,而此种轧机常用的240mm 薄板坯的供应十分紧张,成为增产薄板的主要限制因素。240mm 薄板坯大多用10.5～11in 钢锭在φ630～650轧机上轧制,但一般φ650轧机承担为小型、线材、小无缝钢管轧机开坯的任务,并生产部分中型角钢、槽钢、轻轨、矿用型钢等产品,没有更多的时间来增产240mm 薄板坯。
At present, the gap of sheet in our country’s steel market is very large. The rolling mill is still running at high load. However, the supply of 240mm thin slab, which is commonly used in this kind of mill, is very tight and becomes the main limiting factor for the production of sheet. Most of the 240mm thin slabs are rolled on the φ630 ~ 650 rolling mills with 10.5 ~ 11in ingots. However, the φ650 rolling mill generally undertakes the task of billet rolling of small, wire and small seamless steel tubes and produces medium angle steel, channel, light rail, With steel and other products, there is no more time to increase 240mm thin slab.