Effect of Magnetic Stirrer Imposed in the Inner-mold on Continuous Casting Hollow Billet
In order to improve the quality of continuous casting hollow steel billet,especially the inner surface quality,the technology of installing magnetic stirrer in the inner-mold during the hollow billet continuous casting was put forward,and structure and electrical parameter of magnetic stirrer were studied by numerical simulation method,and static simulation experiment was done,the results show that:1)the greater the current strength,the solidification rate and temperature gradient of molten metal are lower,and therefore it helps to form fine equiaxial crystal structure,however when the current strength is too large,it is not obvious to change the equiaxial crystal size,and the excessive velocity of the melt will result in segregation defects.2)Three-phase magnetic stirrer has higher stirring effect than that of two-phase one.3)Tooth width of yoke should be small to improve the stirring effect.The numerical simulation results can provide the theory basis to optimize the electromagnetic continuous casting technology.
continuous casting hollow billet magnetic stirrer inner mold
ZHANG Qi WANG Jin
School of Mechanical Engineering.Qingdao Technological University,Qingdao 266033,Shandong,China
国际会议
The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)
北京
英文
1-4
2012-10-22（万方平台首次上网日期，不代表论文的发表时间）