ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2018, Vol. 39 ›› Issue (2): 13-16.

• 试验研究 • 上一篇    下一篇

两流板坯连铸58t中间包过滤器的水模型试验和应用

钟巍1,2, 赵丹婷1,3, 帅勇1,2, 罗仁辉2, 仇圣桃1   

  1. 1钢铁研究总院连铸技术国家工程研究中心,北京100081;
    2新余钢铁集团有限责任公司,新余338001;
    3北京科技大学冶金与生态工程学院,北京100083
  • 收稿日期:2017-11-23 出版日期:2018-04-01 发布日期:2022-06-27
  • 作者简介:钟巍(1973-),男,博士研究生,高级工程师,1995年南昌航空工业大学(本科)毕业,设备技术和管理。

Water Model Test of 58t Tundish with Channel Filter for Two Strands Slab Casting and Application

Zhong Wei1,2, Zhao Danting1,3, Shuai Yong1,2, Luo Renhui2, Qiu Shengtao1   

  1. 1 National Engineering and Research Center of Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing 100081;
    2 Xinyu Iron and Steel Co Ltd, Xinyu 338001;
    3 School of Metallurgical and Ecological Engineering, Beijing University of Science and Technology, Beijing 100083
  • Received:2017-11-23 Published:2018-04-01 Online:2022-06-27

摘要: 通过几何相似比0.29:1的水模型试验了湍流抑制器+挡墙+挡坝和湍流抑制器+挡墙+过滤器两种控流装置的钢液流动,研究了通道式过滤器对58t中间包钢液流场的影响。结果表明,原中间包(湍流抑制器+挡墙+挡坝)活塞区体积小,死区体积高达29.53%,优化中间包加入过滤器后(湍流抑制器+挡墙+过滤器)短路流基本消失,钢液的实际平均停留时间延长,死区体积由29.53%减小至13.52%。50t中间包,230mm×1100mm连铸板坯,拉速1.25~1.30m/min工业生产结果表明,使用过滤器后,中间包浇注区的夹杂物尺寸明显小于冲击区,中间包浇注区T[O]由原86×10-6降至30×10-6,连铸坯大多数夹杂物尺寸≤10μm,没有发现≥30μm夹杂物。

关键词: 58t中间包, 通道式过滤器, 水模型, 流场, 夹杂物

Abstract:

The effect of channel filter on fluid field of liquid in a 58t tundish has been studied by using geometric similarity 0.29 : 1 water model to test liquid flow by both control flow devices- turbulence controller + retaining wall + dam and turbulence controller + retaining wall + channel filter. Results show that in original tundish with turbulence controller + retaining wall + dam the plug flow area is relatively small and the dead area is up to 29.53% , while in optimized tundish adding channel filter with turbulence controller + retaining wall + channel filter the short circuit flow basically disappears, the real resident time of liquid increases and the dead area decreases from original 29.53% to 13.52%. The results of commercial production with 50t tundish, casting 230mm x 1100mm slab and casting speed 1.25~1.30 m/min show that after using channel filter the size of inclusions in liquid at casting area in tundish is obvious less than that in impact zone, the T[O] in liquid at casting area in tundish decreases from original 

86x10-6  to 30x10-6 and the size of most inclusions in casting slab is≤10μm and the ≥30μm inclusions are not found.