液压压下厚度自动控制具有响应速度快,定位精度高的优点。国外从七十年代开始在新建的板带轧机及旧板带轧机的改造中都普遍推广和应用这项技术,它是提高板带钢纵向厚度精度的一项重要措施。我院1982年开始对上钢一厂2350mm四辊中板轧机进行了液压压下厚度自动控制(简称液压微调)技术改造,自1984年8月至1985年5月投入试生产,半年多共轧钢20多 Hydraulic pressure automatic thickness control has the advantages of fast response, high positioning accuracy. In the 1970s, foreign countries began to popularize and apply the technology in the reconstruction of the new strip mill and the old strip mill, which is an important measure to improve the precision of the longitudinal thickness of the strip. In 1982, our institute started to reform the hydraulic pressure automatic thickness control (abbreviated as hydraulic trimming) for the 2350mm four-roll medium plate mill of the first steel plant of Shanghai Steel Works. From August 1984 to May 1985, it was put into trial production and more than six months were co-rolled More than 20