【摘 要】
：
Improper flow control devices in a multi-strand tundish can cause some problems, for example, liquid steel cannot reach every nozzle at the same time and the li
【机 构】
：
Metallurgical and Ecological Engineering School,Tianjin Iron & Steel Co. Ltd.
论文部分内容阅读
Improper flow control devices in a multi-strand tundish can cause some problems, for example, liquid steel cannot reach every nozzle at the same time and the liquid steel in nozzles far away from the entry zone has a lower temperature. The water model experiment of a six-strand tundish of Tianjin Iron & Steel Co. Ltd. was performed, a new "U" type baffle was obtained, and its parameters were defined by perpendicular analysis. The "U" baffle can not only improve those imperfections, but also prolong the residence time of nonmetallic inclusions, which is good for their flotation and separation.
其他文献
本文针对澳门某古教堂壁画的脱落、起甲、褪色等病害现象进行了夏季古教堂内热湿环境的实测。结合文物保存的规定指标和现场实测结果,分析得出了现有空调系统不适合于壁画保
“学案导学”旨在通过学生的自主学习，培养学生的自学能力，提高教学效益，同时增强学习兴趣，促使素质教育能有效落实。现在，很多教师的课堂教学都逐渐向着以学生素质发展为宗旨，以学
民间机构是市场经济现代体制中不可缺少的组成部分。本文采用博弈论的方法,从民间机构的三大要素,即专业人士、自身信誉和信息服务三个方面分析民间机构对建筑行业自律机制的
近代早期,在人文主义、新教和清教教义的影响和推动下,英国的王室成员、贵族官僚、商人、乡绅、约曼农等社会各界人士,为了打破教会对教育的垄断地位,改变人才培养的模式,扩
利用传输电流法设计了一套高温超导体自场损耗测量系统,样品上负载的传输电流幅值可以达到100A,频率在0.5 Hz到1 000Hz之间任意可调.测量了Bi2223/Ag高温超导带材在77 K不同
本文利用干扰效应并采用模拟退火 误差反向传播人工神经网络算法辅助原子吸收分光光度法在单波长下对粮谷中痕量镉和砷的同时测定时行了研究 ,取得了满意结果。标准加入法的
回顾了高温钛合金的研究和发展历程,指出了现代高温钛合金进一步发展需要解决的主要难题;综述了颗粒增强钛基复合材料的研究现状,按照基体的选择、增强相的选择和制备工艺3个
对和芘在电子给体化合物N，N-二甲苯胺(DMA)和电子受体化合物对苯二甲酸二甲酯(DMTP)作用下的荧光猝灭进行了研究，结果表明芘与DMA和DMTP在室温下均可形成激基复合物(exciplex)，
ABEEM/MM model has been applied to compute the various properties characterizing water clusters (H2O)n(n = 7-10), such as optimized geometries, the hydrogen bon
O-(2-[18F]fluoroethyl)-L-tyrosine ([18F]FET), a fluorine-18 labeled analogue of tyrosine, has been synthesized and biologically evaluated in tumor-bearing mice.