采用四机架连轧带液芯方坯的模拟实验  

Simulation Experiment of Rolling Square Billet with Liquid Core Using Four Stand Continuous Rolling Mill

作　　者：李春福[1] 胡林[1] 管吉峰[2] 孙葳[2] 

机构地区：[1]鞍山科技大学冶金工程技术中心,辽宁鞍山114003 [2]鞍山钢铁公司大型轧钢厂,辽宁鞍山114012

出　　处：《钢铁研究学报》2004年第3期15-18,共4页Journal of Iron and Steel Research

摘　　要：采用带有不同空芯的铅锭模拟带液芯的连铸坯,在四机架连轧机上平立交替轧制,形成连轧时停止轧制并反转退出轧件,测量各道次的压下、宽展、前滑和芯部的压合值,并计算出各道次的秒流量和延伸系数,借此研究该工艺的可行性及连轧时带液芯轧件的变形情况。研究结果表明:用四机架连轧带液芯铸坯在工艺上、技术上是可行的。连铸坯带液芯连轧时的液芯率应小于20%。最好采用四辊万能轧机或采用凸透镜形状的连铸结晶器,以避免带液芯连轧时出现凹陷变形带。初步确定在所采用轧制条件下可轧合的最大液芯率为10%。The hollow lead ingots were used to simulate the continuous casting slab with liquid core. The lead ingots were rolled by four stand continuous rolling mill. After forming continuous rolling, the rolled pieces were backed off and then the height, width, forward slip and hollow core rate of the rolled piece were measured. The feasibility of the technique and the character of metal deformation were studied. The results indicate that the continuous casting slab with liquid core can be rolled by four stand continuous rolling mill. The rate of liquid core should be less than 20 percent for continuous rolling. The universal rolling mill and convex mould should be used for decreasing the influence of dishing deformation band. The ultimate rate of liquid core is 10 percent under the rolling condition of the present study.

关 键 词：连轧 方坯 液芯 模拟 

分 类 号：TG333[金属学及工艺—金属压力加工]