棒线材双铸机多轧线免加热直接轧制工艺研究  

Research on double caster and free-heating direct rolling technology for multiple rolling lines of bar and wire

作　　者：郭新文[1] 徐兵伟 邸全康 刘珂 吴杰[1] GUO Xinwen;XU Bingwei;DI Quankang;LIU Ke;WU Jie(Shougang Changzhi Iron and Steel Co.,Ltd.,Changzhi 046031,China;Technology Institute of Shougang Group Co.,Ltd.,Beijing 100043,China)

机构地区：[1]首钢长治钢铁有限公司,山西长治046031 [2]首钢集团有限公司技术研究院,北京100043

出　　处：《轧钢》2023年第2期116-120,共5页Steel Rolling

摘　　要：棒线材直接轧制工艺具有巨大的节能减排效果,对我国实施碳达峰、碳中和具有重大意义。介绍了首钢长治钢铁有限公司棒线材产线原工艺设备概况,针对其双铸机多轧线免加热直接轧制的工艺设计,对高拉速结晶器振动控制、二冷参数对铸坯热状态的影响、铸坯全程保温输送设计、钢坯和轧件温度均衡控制技术、冷床倍尺剪切优化控制等关键技术进行了研究,实现了HPB300、HRB400E、HRB500E(直条、盘卷)产品的直接轧制批量生产,产品力学性能均衡稳定,给企业带来了良好的经济效益和社会效益。Direct rollingtechnology of bar and wire has a huge effect on energy conservation and emission reduction,which is of great significance to the implementation of carbon peak and carbon neutralization in China.The general situation of the original process equipment of the bar and wire production line of Shougang Changzhi Iron and Steel Co.,Ltd.was introduced.In view of the technology design of free-heating direct rolling for multiple rolling lines ofdouble caster,the key technologies such as the vibration control of the high-speed casting mold,the influence of the secondary cooling parameters on the thermal state of the billet,the design of the whole process of the heat preservation and transportation of the billet,the temperature equalization control technology of the billet and the rolled piece and the optimal control of multiple-length shearing on the cooling bed were researched.The HPB300,HRB400E and HRB500E(straight bar and coil)products has realized batch production by direct rolling,and the mechanical properties of the products are even and stable,and the good economic and social benefits are obtained.

关 键 词：棒线材 免加热 直接轧制 结晶器振动 二冷参数 铸坯保温输送 温度均衡控制 

分 类 号：TG335.62[金属学及工艺—金属压力加工]