整坯轧制在半连轧生产线上的应用

Application of the whole billet rolling in semi-continuous bar rolling line

为降低生产成本,增加经济效益,石横特殊钢厂采用自由活套工艺,使轧件在Φ32 0mm×6与Φ2 80mm×6机组之间形成大活套,并通过采取“设计推套器、侧活套台、切尾剪、夹送辊”等技术创新措施,实现了整坯轧制在半连轧生产线上的应用。应用表明:盘条盘重增加2 80kg ,尾部耳子和直条短尺材减少5 0 % ,直条成材率提高0 93% ;轧制间隙时间缩短,年产量增加4万t。

In order to decrease production cost,the free-loop technology is applied,which is realized the whole billet rolling in semicontinuous rolling line in Shiheng Special Steel Plant of Jinan Iron and Steel Group.The production shows that the single weight of coil wire is increased 280kg,the defects rates of rear ear and short length piece are decreased 50%,and the yield is increased 0.93%.