最近,用户对大口径钢管用低合金钢板的要求越来越高,一方面是由于管道使用条件苛刻,要求钢管在具有良好塑性和焊接性的同时,还应具备良好的强度和抗断裂性;另一方面是出于降低成本的要求。为生产出满足上述要求的钢板,在厚板轧机上开发出了热机械控轧工艺(TMCP),工艺包括热机械 Recently, the requirements of users for low-alloy steel plates for large-diameter steel pipes are getting higher and higher. On the one hand, due to the harsh conditions of use of the pipes, the steel pipes are required to have good plasticity and weldability and good strength and fracture resistance. On the other hand is out of cost requirements. In order to produce steel that meets the above requirements, the Thermo-Mechanical Controlled Rolling Process (TMCP) has been developed on plate mills,