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在轧钢生产中,钢材的品种和规格对轧机的速度有不同的要求。速度过高,钢坯无法咬入,需用行车吊着钢锭将轧件强行撞入,对轧机冲击大,影响设备寿命,且往往轧件咬不进而掉队或冷轧造成废品,还经常出现断辊,鼓套管等事故。速度过低,则影响生产率。但轧制合金钢时,却要求更低的速度,这种速度的调节范围需在2∶1左右。第一钢厂轧钢车间300轧机是用710瓩(6仟伏)绕线式异步电动机拖动。由于大容量
In the rolling production, the varieties and specifications of the steel have different requirements on the speed of the rolling mill. The speed is too high, the billet can not bite, the need to drive the steel ingot will be forced into the rolling, impact on the rolling mill, affecting the life of the equipment, and often do not die rolling or rolling caused by waste, but also often appear broken , Drum casing and other accidents. If the speed is too low, the productivity will be affected. However, when rolling alloy steel, but requires a lower speed, this speed adjustment range needs to be about 2: 1. The First Steel Mill 300 mill is powered by a 710 瓩 (6 kV) wound induction motor. Due to the large capacity