正在加载图片...
第6期 王现辉等:CSP结晶器内卷渣的瞬态特征 ·769。 渣有效涡. [4 Bao Y P.Zhu JQ.Jiang W,et al.Water modeling research on (2)液面卷渣受拉速影响较大,拉速增大,卷渣 slag-entmapment in the moul of thin slab continuous caster.U- 周期变短,液面失稳态时液面连续剪切卷渣速度加 niv Sci Technol Beijing.1999.21(6):530 (包燕平,朱建强,蒋伟等.薄板坯结晶器内卷渣现象的研究, 快,卷渣有效涡出现频率骤增. 北京科技大学学报,1999.21(6:530) (3)液渣渣滴在结晶器内的运动可分为两部 [5 Chen Z H.Wang E G,Wang Q C.et al.Study on vortex flux 分:液面失稳态时,液渣渣滴连续卷入并主要在水口 and sag entrapment behavior in mold in thin slab cont inuous cast- 主流股上侧结晶器内随流股运动,少部分沿窄面向 ing Steelmaking,2005,21(5):37 (陈芝会,王恩刚,王清成,等.薄板坯连铸结品器内涡流及卷 结晶器下半部分运动:液面稳定态时,卷渣现象基本 渣行为的研究.炼钢.2005,21(5):37) 停止,流股上侧的部分液渣滴上浮去除:主流股下侧 I6 He Q L.Observations of vortex fomation in the mould of a con- 被卷入结晶器底部的液渣滴很难上浮到液面. tinuous slab caster.ISI/Int,1993.33(2):343 (4)液渣滴被凝固坯壳的捕获几率最大的时间 [7 Momles R D.Palafx-ramos J,Garcila-demedices L,et al.A DPIV 段主要集中在液面失稳态开始剪切卷渣后1s到剪 study of iquid steel flow in a wide thin slab caster using four ports 切卷渣结束后约4s之间;卷渣的周期性导致CSP submerged entry nozzles.ISL/Int,2004.44(8):1384 [8 Torreralonso E.M orales D,Demedices L.G,et al.Flow dy namics 铸坯内沿拉坯方向大型夹杂物分布差异较大. in thin slab molds driven by sustainable oscillating jets fmom the (5)从结晶器内液面的瞬态卷渣特征来看,以 feeding SEN.IS U Int,2007,47(5):679 上研究的双侧孔水口并不适合CSP连铸高效化生 [9 Shen B Z.Shen H F,Liu B C.Instability of fluid flow and evel 产,合理的CSP水口结构有待开发. fluctuat ion in continuous thin slab casting mold.S/Int,2007. 47(3):427 参考文献 10 Lu Q T,Yang R G,Wang X H,et al.Water modeling study on factors affecting mold pow der entrapment in slab continuous [1]Gupta D.Lahini A K.Water-modeing study of the surface dis- casting.Iron Steel,2006,41(7):29 turbances in con tinuous slab caster.Metall Mater Trans B. (陆巧形,杨荣光,王新华,等。板坯连铸结品器保护渣卷渣及 1994,25(4):227 其影响因素的研究.钢铁,2006.41(7):29 [2]Gupta D.Lahiri A K.Cold model study of the surface profile in a [1) Warg X H.Wang X H.Zhang J M,et al.Water modeling continuus casting modek effect of second phase.Metall Mater study on the meniscus dynamic distortion of molten steel level in Trans B.1996.27(8):695 a CSP thin slab casting mould.J Univ Sci Technol Beijing, [3]Lei H,Xu HH.Zhu M Y,et al.Mechanism and control of slag 2009,31(2):234 entrapment in high casting mould.Iron Steel,1999,34(8):20 (王现辉,王新华,张炯明,等.CSP结品器内钢液面动态失稳 (雷洪,许海虹,朱苗勇,等。高速连铸结品器内卷渣机理及其 现象的水模实验研究.北京科技大学学报,2009,31(2): 控制研究.钢铁,1999.34(8):20) 234)渣有效涡 . ( 2) 液面卷渣受拉速影响较大, 拉速增大, 卷渣 周期变短, 液面失稳态时液面连续剪切卷渣速度加 快, 卷渣有效涡出现频率骤增 . (3) 液渣渣滴在结晶器内的运动可分为两部 分:液面失稳态时, 液渣渣滴连续卷入并主要在水口 主流股上侧结晶器内随流股运动, 少部分沿窄面向 结晶器下半部分运动 ;液面稳定态时, 卷渣现象基本 停止, 流股上侧的部分液渣滴上浮去除 ;主流股下侧 被卷入结晶器底部的液渣滴很难上浮到液面 . ( 4) 液渣滴被凝固坯壳的捕获几率最大的时间 段主要集中在液面失稳态开始剪切卷渣后 1 s 到剪 切卷渣结束后约 4 s 之间 ;卷渣的周期性导致 CSP 铸坯内沿拉坯方向大型夹杂物分布差异较大 . (5) 从结晶器内液面的瞬态卷渣特征来看, 以 上研究的双侧孔水口并不适合 CSP 连铸高效化生 产, 合理的 CSP 水口结构有待开发. 参 考 文 献 [ 1] Gupta D, Lahiri A K .Wat er-modeling study of the surface dis￾turbances in con tinuous slab caster .Metall Mater Trans B , 1994, 25( 4) :227 [ 2] Gupta D, Lahiri A K .Cold model study of the surf ace profile in a continuous casting model:effect of second phase.Metall Mater Trans B , 1996, 27( 8) :695 [ 3] Lei H, Xu H H, Zhu M Y, et al.Mechanism and control of slag entrapment in high casting mould.Iron S teel, 1999, 34( 8) :20 ( 雷洪, 许海虹, 朱苗勇, 等.高速连铸结晶器内卷渣机理及其 控制研究.钢铁, 1999, 34( 8) :20) [ 4] Bao Y P, Zhu J Q, Jiang W, et al.Wat er modeling research on slag-entrapment in the mould of thin slab continuous cast er .J U￾ni v S ci Technol Beijing, 1999, 21( 6) :530 ( 包燕平, 朱建强, 蒋伟, 等.薄板坯结晶器内卷渣现象的研究, 北京科技大学学报, 1999, 21( 6) :530) [ 5] Chen Z H, Wang E G, Wang Q C, et al.Study on vort ex flux and slag entrapment behavior in mold in thin slab continuous cast￾ing.Steelmaking , 2005, 21( 5) :37 ( 陈芝会, 王恩刚,王清成, 等.薄板坯连铸结晶器内涡流及卷 渣行为的研究.炼钢, 2005, 21( 5) :37) [ 6] He Q L .Observations of vortex f ormation in the mould of a con￾tinuous slab cast er .IS IJ Int, 1993, 33( 2) :343 [ 7] Morales R D, Palaf x-ramos J,Garcila-demedices L, et al.A DPIV study of liquid st eel flow in a w ide thin slab caster using four ports submerged entry nozzles.ISIJ Int, 2004, 44( 8) :1384 [ 8] Torres-alonso E,M orales D, Demedices L G, et al.Flow dynamics in thin slab molds driven by sust ainable oscillating jets from the feeding SEN .IS IJ Int, 2007, 47( 5) :679 [ 9] Shen B Z, Shen H F, Liu B C .Inst ability of fluid flow and level fluctuation in continuous thin slab casting mold.IS IJ Int, 2007, 47( 3) :427 [ 10] Lu Q T, Yang R G, Wang X H, et al.Wat er modeling study on factors affecting mold pow der entrapment in slab continuous casting .Iron S teel, 2006, 41( 7) :29 ( 陆巧彤, 杨荣光, 王新华, 等.板坯连铸结晶器保护渣卷渣及 其影响因素的研究.钢铁, 2006, 41( 7) :29) [ 11] Wang X H, Wang X H, Zhang J M, et al.Water modeling study on the meniscus dynamic distortion of molten st eel level in a CSP thin slab casting mould.J Uni v S ci Technol Beijing , 2009, 31( 2) :234 ( 王现辉, 王新华, 张炯明, 等.CSP 结晶器内钢液面动态失稳 现象的水模实验研究.北京科技大学学报, 2009, 31 ( 2 ) : 234) 第 6 期 王现辉等:CSP 结晶器内卷渣的瞬态特征 · 769 ·
<<向上翻页
©2008-现在 cucdc.com 高等教育资讯网 版权所有