答:无头轧制是连续轧钢的一种新方法。它的轨制过程是这样的:钢还在送入连续式轧机第一机架前,用焊接机通过电流把前一根钢坯的尾端同后一根钢坯的端部加热至熔化状态,并给以适当的压力使之焊合。在连轧机中由于把钢坯焊接起来,因而轧制是不间断地进行的,对于轧型钢来说,可以一直轧到孔型磨损不能再用为止。轧出的钢材按要求剪成定尺或卷成盘。用这种方法可以轧制各种型材。它和现有的连轧法相比有下列优点:(一)间隙时间减少了;(二)切头、切尾量减少,成品率提高;(三)轧件首尾温度可以控制一致,使轧制条件稳定,为缩减公差和负公差轧制创造了有利的条件;(四)二级品和废品率减少;(五)有利于轧制过程目动化。总之,无头轧制可使钢材产量增 A: Headless rolling is a new method of continuous rolling. Its rail system is such that the steel is still heated before it is fed into the first stand of the continuous rolling mill, with the welding machine, to heat the end of the previous billet to the end of the last billet to the molten state Give proper pressure to weld. In the continuous rolling mill due to the billet welded together, so the rolling is carried out uninterrupted, for the rolling steel, can be rolled until the hole wear can not be used so far. Rolled out of steel according to the requirements cut into length or roll into the plate. In this way you can roll a variety of profiles. Compared with the existing continuous rolling method, it has the following advantages: (1) the gap time is reduced; (2) the cutting head and tail cut are reduced and the yield of the finished product is increased; (3) The conditions are stable, creating favorable conditions for reduction of tolerances and negative tolerance rolling; (iv) Reduction of secondary products and rejects; (v) Conducive to the automation of the rolling process. In short, endless rolling can increase steel production