目前,国外对高效轧机的研究工作正予以充分重视。据资料报导,利用三辊孔型轧制圆坯时,变形效率为二辊轧制时的1.85倍,而四辊轧制则为二辊轧制时的1.94倍。在延伸率相同的轧制条件下,三辊轧制时的压力比二辊轧制时的压力降低40％,而四辊轧制则降低55％。 At present, foreign high-efficiency rolling mill research is given full attention. According to statistics, the use of three-roll pass rolling round billet, the deformation efficiency of 1.85 times the two-roll, while the four-roll rolling was 2.94 times the two-roll. Under the same elongation conditions, the pressure during three-roll rolling was reduced by 40% compared with that during two-roll rolling, and by four-roll reduction by 55%.