本文用模拟实验法研究了在现有型钢轧机上采用从动立辊框架组成四辊孔型轧制H型钢对,用最后一个闭口工字孔型轧出的工字坯在四辊孔型中轧制成H型钢时的腿部增长规律和腰部波浪现象。研究表明,工字坯向H型件过渡时,由于伴随着腿内侧斜度的变化而存在着强迫宽展;与腿内侧无斜度的平行腿轧制条件相比较,工字件腿部增长比H件大,并且不象H件轧制时那样为防止腰部波浪对腿和腰之间的压下系数比值有较大和较严格的要求。 In this paper, the use of simulated experimental study of the existing steel rolling mill on the use of vertical roller frame composed of four-roll pass H-beam pairs, with the last closed I-hole type I-blanks in the four-roll pass Law of leg growth and waist wave when rolled into H-section steel. The study shows that there is forced widening due to the change of the slope of the inner side of the H-beam when it is transitioning to the H-shape. The leg of the H-shaped part grows Is larger than H, and does not have a larger and more stringent requirement for preventing waist waves from lowering the ratio between the legs and the waist as in the H-piece rolling.