我厂连铸连轧铝杆生产过程中断头严重,容易造成堆料。经过加大铸坯截面,使前几道正张力轧制变为负张力轧制。解决了断头问題。在正张力轧制状态下,轧件受到很大的拉应力,而实际上坯料在入孔时℃,温度达500以上,坯料为粗大柱状晶组织。内部存在着严重的铸造缺陷。轧件多少不等存在着宏观与微观 I plant continuous casting aluminum rod production line interrupted severely head, easily lead to heap material. After increasing the cross section of the slab, the first few positive tension rolling into negative tension rolling. Solve the problem of broken head. In the state of normal tension rolling, the rolling material is subjected to a great tensile stress, but in fact the ingot when the ingot temperature ℃, the temperature of 500 or more, the blank is coarse columnar crystal structure. There is a serious internal casting defects. Rolling the number of different macro and micro exist