A method has been proposed for rolling rounds. The method entails the successive deformation of a semifinished product in roughing passes, a leader pass, and a circular finishing pass. The rolling is done in a "rectangle - square - circle" pass system to ensure that the shape of the finished round is accurate over its entire cross section and that the structure of the metal has been properly deformed. In the initial stage, the rectangular semifinished product is rolled in open box passes and universal square four-high passes to obtain a square billet. The billet is rolled in a circular universal four-high pass in the final pass. The ratio of the side of the square billet to the diameter of the circular pass is 0.9-0.92. The method makes it possible to obtain rounds whose surface is of constant curvature over the product's entire cross section. The method also improves the structure and surface of the round, stabilizes the production process, and increases the productivity of the rolling operation. A. Ya. Kuzovkov, V. N. Kalyagin, V. V. Borodin, et al. Patent No.2170150 MPK~7 B 21 B 1/00, published 2001.10.07. Patent-holder Nizhiy Tagil Metallurgical Combine.
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机译：已经提出了一种用于滚轮的方法。该方法要求半成品在粗加工，导程和圆形精加工中连续变形。轧制是在“矩形-正方形-圆形”的道次系统中进行的，以确保成品圆弧的形状在整个横截面上都是准确的，并且金属的结构已经适当变形。在初始阶段，将矩形半成品在开箱式轧机和通用方形四辊轧制机中轧制以获得方坯。在最后一道工序中，将钢坯以圆形的四辊通用道次轧制。方坯的侧面与圆形焊道直径的比为0.9-0.92。该方法使得能够获得表面在产品的整个横截面上具有恒定曲率的圆形。该方法还改善了圆钢的结构和表面，稳定了生产过程，并提高了轧制操作的生产率。 A.雅。 Kuzovkov，V.N。Kalyagin，V.V。Borodin等。专利号2170150 MPK〜7 B 21 B 1/00，2001.10.07公开。专利持有人Nizhiy Tagil冶金联合收割机。
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