为了保证半成品和成品前、中、后各断面尺寸的一致性,复二重线材轧机的围盘处要采用套轧。但当轧制速度≥10m/s,轧件断面≤8mm方以下时,轧件尾部复杂而紊乱的运动经常使其尾端形成一个倒折过来的尾巴或打成一个结。如图1所示。 In order to ensure the semi-finished and finished product before, during and after the consistency of the cross-sectional size, complex double wire rod rolling mill at the plate to be used sets of rolling. However, when the rolling speed ≥ 10m / s, rolling cross-section ≤ 8mm side of the following, the tail of the rolling complex and disorderly movement often make its tail end to form a folded tail or hit a knot. As shown in Figure 1.