济钢中板利用设备大中修时间于7月16～8月17日对三辊劳特式粗轧机进行了加宽改造,辊身长由2300mm增加至2500mm;大辊直径由原800mm增至850mm;轧辊转数由原79.5r/min减至62.8r/min;轧制速度由原3.3m/s降至2.79m/s。改造的主要目的是,使原2300mm三辊劳特式粗轧机与新上2500mm四辊精轧机相匹配,生产板宽1800～2000mm的产品,增大原料重量, Jigang plate medium and large repair time on July 16 ~ August 17 on the three-roll Lott rough roughing machine widening transformation, the roller body length increased from 2300mm to 2500mm; large roller diameter from the original 800mm to 850mm ; The number of rollers decreased from 79.5r / min to 62.8r / min; the rolling speed decreased from 3.3m / s to 2.79m / s. The main purpose of the transformation is to match the original 2300mm three-roll Loughstone roughing mill with the new 2500mm four-roll finishing mill to produce a product with a width of 1800-2000mm and increase the weight of raw materials,