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| 1 | 高速连铸用新型浸入式水口显示文摘连铸机结晶器内钢液的流动状态严重影响连铸坯的质量,尤其在弯月面处,钢液与结晶器保护渣直接接触,结晶器内弯月面不稳定引起的卷渣,是导致产品产生缺陷的主要原因之一,如冷轧薄板的线状缺陷和厚板的表面缺陷。在结晶器润滑不均匀时,还会增加漏钢危险。弯月面液面波动主要是由于浸入式水口吐出孔钢液剧烈的湍流和瞬态行为引起的。最近,在一台连铸机上浇注不同钢种已成为全世界钢铁生产商努力的一个主要方向。为了满足所有钢种的质量要求,对每个钢种都要求一定的浇注速度。对常规的浸入式水口而言,确保结晶器内有利的流动条件是一个难题。因此,比以往更需要一种新型浸入式水口,通过保持最佳的结晶器内钢液流动状态,以各种浇注速度浇注出多规格铸坯。介绍了测试新型浸入式水口流动性能的数值模型和物理模型的试验。采用URANS方法瞬态CFD模拟表明,新型浸入式水口流出的钢液瞬态行为稳定,因而弯月面以下钢液流速较慢,其效果还通过水模拟得到了验证。现场试验是在中国台湾的中钢公司进行的,试验结果表明,通过优化结晶器内钢液的流动行为,结晶器液面波动明显减小,从而提高了产品质量。 | Shung Sheng Kao Hsin Chin Kua Oliver Wiens Wolfgang Mo?ner Markus Reifferscheid Nobert Vogl Gernot Hackl Gerald Nitzl 潘秀兰 | 2014 | 世界钢铁2014，，1： | 2 |
| 2 | Novel Stopper Designs to Improve Argon Purging Efficiency in Slab Casting显示文摘In order to ensure consistent argon flow in the stopper gas channel and improve argon bubble performance in the slab casting mould,two patented new technologies CSC(Clean Stream Cartridge) and SHP(Slot Hole Plug) were applied in the argon purging stopper designs.The novel stopper designs can maintain a stable back pressure and argon flow in the argon line during long sequence casting,eliminate pressure increasing at the start of the casting,even distribute gas bubbles in the mould leading to improved mould flux melting and lubrication,reduce mould level fluctuation and so on. | Yong TANG Gerald NITZL Gernot HACKL | 2016 | China's Refractories2016，25，4： | 1 |
| 3 | Norton-Hoff model for deformation of growing solid shell of thin slab casting in funnel-shape mold显示文摘A funnel-type mold is commonly used to provide necessary clearance for the submerged entry nozzle in the thin slab casting(TSC).The partially solidified shell is subjected to the mechanical deformations,which can lead to the defects formation and,as a results,to a breakout.Traditionally,the results of the flow simulation,performed by the finite volume method(FVM),are fed to the external package for the finite element analysis of stress and strain.A coupled model was assembled using“creeping solid”approach by blending the Norton-Hoff viscoplastic stress for the solidifying shell with the Newtonian viscous stress of the liquid melt.The FVM was used to combine both liquid and solid stress models within a single solver.The iterative procedure based on the improved both side diffusion method was introduced to treat the nonlinear relation between the viscoplastic stress and the strain rate.The modeled shell thickness was verified by previously published breakout measurements and the simulation results.Temperature distribution,obtained during the TSC simulation,dominantly corresponds to the viscoplastic range.Developed numerical approach is robust and has direct industrial application. | Alexander Vakhrushev Abdellah Kharicha Menghuai Wu Andreas Ludwig Gerald Nitzl Yong Tang Gernot Hackl Josef Watzinger Christian M.G.Rodrigues | 2022 | Journal of Iron and Steel Research(International)2022，29，1： | 0 |
| 4 | 浸入式水口设计的优化显示文摘现代模拟技术有助于连铸工艺耐火材料的优化,并使其满足特定的客户要求。文章给出了若干设计开发案例,并通过工厂观察结果和现场测量技术加以确认。 | Gernot Hackl | 2015 | 钢铁译文集2015，0，2： | 0 |
| 5 | An Innovative Submerged Entry Nozzle Design for Billet and Bloom Casting显示文摘Fluid flow in the mold has a significant impact on the quality of continuously cast steel products.Since it is strongly influenced by the SEN design,attention has to be paid on its geometry.In this paper the main principles of a novel SEN type will be described.Water modeling and Computational Fluid Dynamics(CFD)are applied to characterize the flow pattern under different conditions.Furthermore,the interaction with electromagnetic stirring(M-EMS)is analyzed by means of a liquid melt model.Finally,actual steel plant performance data and observations are discussed. | Gernot HACKL Yong TANG Gerald NITZL Dennis SCHURMANN Bernd WILLERS Sven ECKERT | 2021 | China's Refractories2021，30，2： | 0 |
| 6 | Full-scale Water Modeling on Flow Field of Continuous Casting Mold显示文摘In the continuous casting process of aluminum killed steel grades,nozzle clogging is a common problem.Argon is usually injected into the casting channel through stoppers or nozzles to minimize clogs;however,complex two-phase flow regimes appear,and the flow in the mold might deteriorate.This could result in a higher defect rate in the cast product and should be avoided as much as possible.Therefore,it is important to understand the interaction between process conditions and the refractory products used and their impact on the flow pattern in the mold.In this study,a full-scale water model was established to simulate the slab casting process.Three nozzle shapes and three immersion depths were applied to investigate the flow behavior and liquid level fluctuations by the full-scale water model.The relationship between the flow behavior and continuous casting parameters was evaluated.The results provide guidance for the design and production of the refractory nozzle and the operation of the continuous casting plant. | Hang YE Tianfei MA Gernot HACKL Jianhua LUO Gongjie TAO | 2021 | China's Refractories2021，30，2： | 0 |
| 7 | Correction to: Norton-Hoff model for deformation of growing solid shell of thin slab casting in funnel-shape mold显示文摘Correction to:J.Iron Steel Res.Int.(2022)29:88-102 http://gffzzd3cc09b8251d45dfs9qww0u5nbvq66b55.ffgz.tsg.suse.edu.cn/10.1007/s42243-021-00734-8The original version of this article unfortunately contained mistakes.The assignment of the affiliations was incorrect,and the corrected table is given below.The original article has been corrected. | Alexander Vakhrushev Abdellah Kharicha Menghuai Wu Andreas Ludwig Gerald Nitz Yong Tang Gernot Hackl Josef Watzinger Christian M.G.Rodrigues | 2022 | Journal of Iron and Steel Research(International)2022，29，11： | 0 |
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