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在传统轧钢生产方式中,轧钢机接触轧件的2只轧辊(以下称为工作辊)其辊径一般是相同的。在轧制时若轧辊上下配置是对称的,则可称之为“对称同径轧制”,如常见的2辊、4辊、6辊、12辊、20辊轧机等等;若轧制时上下轧辊不对称布置,即称之为“不对称同径轧制”,如3辊、5辊、HC轧机等等。同径轧制技术一直沿用至今。但随着人类科技进步及对轧制理论的深入研究,人们发现为解决某一特殊矛盾的需要,突破传统观念采取对称或不对称异径轧制技术可取得意
In conventional steel production methods, the two rolls (hereinafter referred to as work rolls) that the rolling mill contacts the rolling stock have generally the same roll diameters. If the roll up and down when the configuration is symmetrical, it can be called “symmetrical same diameter rolling”, such as the common 2, 4, 6, 12, 20, such as 20-roll mill; The upper and lower rolls are asymmetrically arranged, which is called “asymmetric same-diameter rolling”, such as 3-roll, 5-roll, HC mill and the like. The same diameter rolling technology has been in use so far. However, with the progress of human science and technology and further study of rolling theory, people find it necessary to break through the traditional concept and adopt the symmetrical or asymmetrical reducer rolling technology in order to solve the need of a particular contradiction