本文介绍了西安重型机械研究所为上海钢铁研究所设计成套的Φ125/Φ450×420mm高精度四辊液压轧机的工艺流程,主要技术参数、装机水平和采用的新技术、新设备。该轧机于2003年7月在上海通过验收,机组在总体水平、产品精度、成品率等方面均达到同类轧机国内先进水平。 This paper introduces the process flow, main technical parameters, installed capacity, new technology and new equipment of Φ125 / Φ450 × 420mm high precision four-roll hydraulic rolling mill designed by Xi’an Heavy Machinery Research Institute for Shanghai Institute of Iron and Steel. The mill passed the acceptance test in Shanghai in July 2003, and the unit has reached the domestic advanced level of similar rolling mills in terms of overall level, product accuracy and yield.