磁控电渣重熔过程中熔滴演变行为的可视化研究
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- 英文论文题名：Study of the Droplet Evolution in Magnetically Controlled ESR Process
- 论文作者：王怀 ; 钟云波 ; 李强 ; 任维丽 ; 雷作胜 ; 任忠鸣
- 英文论文作者：WANG Huai ; ZHONG Yunbo ; LI Qiang ; REN Weili ; LEI Zuosheng ; REN Zhongming ; State Key Laboratory of Advanced Special Steels ; Shanghai University
- 年：2016
- 作者机构：上海大学,省部共建高品质特殊钢冶金与制备国家重点实验室;
- 论文关键词：磁控电渣重熔 ; 可视化模型 ; 熔滴演变 ; 熔滴细化 ; 振荡洛伦兹力
- 英文论文关键词：Electroslag remelting ; Visualization model ; Static magnetic field ; Droplet evolution ; Refinement of droplets
- 会议召开时间：2016-08-15
- 会议录名称：第三届全国电磁冶金与强磁场材料科学会议学术论文集
- 语种：中文
- 分类号：TF14
- 学会代码：ZGJS
- 会议名称：第三届全国电磁冶金与强磁场材料科学会议
- 会议地点：中国河南焦作
- 主办单位：中国金属学会电磁冶金与强磁场材料科学分会
- 学会名称：中国金属学会
- 页数：6
- 文件大小：2110k
- 原文格式：O
- 会议级别：全国
摘要
本文采用可视化的物理实验模型来研究磁控电渣重熔过程中熔滴形成和滴落行为。通过可视化模型和高速摄像机的运用对有或无外加横向稳恒磁场情况下自耗电极末端熔滴演变行为进行清晰地观察和记录。对实验结果进行分析发现当施加了0.7T的横向稳恒磁场后,自耗电极的重熔速度将有所提高,熔滴颈部将变得更长,同时会产生熔滴颈部破裂为多颗细小熔滴的现象。可视化研究的结果表明磁控电渣重熔过程,可以大大提高渣金接触面积,即提高净化效率。本文解释了施加磁场后熔滴颈部破裂的机理,并且采用铅金属棒作为自耗电极来证实了熔滴颈部破碎现象的不唯一性。
A transparent experimental model was used to study the droplet evolution in magnetically controlled electroslag remelting(MC-ESR) process.Thanks to the transparent model and the high-speed camera,it was convenient to clearly record the formation and detachment of the droplets with and without the magnetic field.The results showed that there were some obvious differences could be found when an external transverse static magnetic field of 0.7 Tesla is superimposed comparing with no magnetic field.The remelting rate became faster,the droplet neck became stronger,and the droplet neck would be smashed into a lot of smaller droplets.The separation of the numerous small droplets increases the interface of the metal and slag tremendously which means the removal efficiency of the inclusions can be improved.The mechanism of the smashing effect occurring on the droplet neck was discussed.And the lead bar war used as consumable electrode to confirm the samshing effect was not an accidental phenomena.
A transparent experimental model was used to study the droplet evolution in magnetically controlled electroslag remelting(MC-ESR) process.Thanks to the transparent model and the high-speed camera,it was convenient to clearly record the formation and detachment of the droplets with and without the magnetic field.The results showed that there were some obvious differences could be found when an external transverse static magnetic field of 0.7 Tesla is superimposed comparing with no magnetic field.The remelting rate became faster,the droplet neck became stronger,and the droplet neck would be smashed into a lot of smaller droplets.The separation of the numerous small droplets increases the interface of the metal and slag tremendously which means the removal efficiency of the inclusions can be improved.The mechanism of the smashing effect occurring on the droplet neck was discussed.And the lead bar war used as consumable electrode to confirm the samshing effect was not an accidental phenomena.
引文
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[2]Choudhury A.Isij International,1992,32(5):563-574
[3]Haifa H.Steel Research International,2013,84(5):495-510
[4]李正邦,周文辉,李宜大.钢铁,1980,1:20-26
[5]陈光,钟云波,冯美龙,雷作胜,任维丽,任忠鸣.上海金属,2012,(03):44-49
[6]Kompan Y Protokovilov I,Fautrelle Y Gelfgat Y Bojarevics A International Scientific Colloquium.Riga,2010:85-90
[7]Murgas M,Chaus AS,Pokusa A Pokusova M.ISIJ International,2000,40(10):980-986.
[8]Cao Y L,Dong Y W,Jiang Z H,Cao H B,Hou D,Feng Q L.International Journal of Minerals,Metallurgy,and Materials,2016,23(4):399-407
[9]Campbell J.Journal of Metals,1970,22(7):23-35
[10]Wang Q,He Z,Li B K,Tsukihashi F.Metallurgical and Materials Transactions B,2014,45(6):2425-2441
[11]KharichaA,LudwigA,Wu M.Ladle and vacuum treatment,2011,session 19:1-5
[12]KharichaA LudwigA,Wu M.International Symposium on Liquid Metal Processing and Casting.Nancy,2011:41-48
[13]Wang H,Zhong YB,Qiang L,Fang YP,Ren WL,Lei ZS,Ren Z M.ISIJ International,2016,56(2):255-263
[14]Zhong Y B,Qiang L,Fang Y P,Wang H,Peng M H,Dong L C,Zheng T X,Lei Z S,Ren W L,Ren Z M.Materials Science and Engineering A,2016,660:118-126