|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Simulation on Effect of Divergent Angle of Submerged Entry Nozzle on Flow and Temperature Fields in Round Billet Mold in Electromagnetic Swirling Continuous Casting Process显示文摘A new process for swirling flow generation in the submerged entry nozzle(SEN)in continuous casting process of steel was proposed.A rotating electromagnetic field was set up around the SEN to induce swirling flow by Lorentz force.The flow and temperature fields in the SEN and round billet mold with electromagnetic swirling were numerically simulated and then verified by the electromagnetic swirling model experiment of low melting point alloy.The effects of divergent angle of the SEN on the flow and temperature fields in mold with electromagnetic swirling were investigated.The electromagnetic swirling flow generator(EMSFG)could effectively induce swirling flow of molten steel in the SEN,which consequently improved greatly the flow and temperature fields in the mold.Below the nozzle outlet in mold,with the increase of divergent angle,the stream of bulk flow diverged more widely,the high temperature zone shifted up,and the temperature field became more uniform.Above the nozzle outlet in mold,with 350Aelectromagnetic swirling,when the divergent angle of the SEN increased,the upward flow velocity and the meniscus temperature first increased and then decreased.With a divergent angle of 60°,the upward flow velocity and meniscus temperature reaced the largest value. | De-wei LI Zhi-jian SU Katsukiyo MARUKAWA Ji-cheng HE | 2014 | Journal of Iron and Steel Research(International)2014，21，2： | 9 |
| 2 | Suppression of Effect of Uneven Velocity in Submerged Entry Nozzle in Round Billet Continuous Casting Process Using Electromagnetic Swirling Flow显示文摘Sliding gate control system is widely employed in continuous casting process of steel to control flow rate of molten steel.As molten steel passes through a sliding gate,uneven flow develops.This will cause asymmetrical distribution of flow and temperature field in mold consequently,formation of vortex near the nozzle and entrapment of CC powder into the molten steel.etc,which have negative effect on process productivity and product quality.To suppress the uneven flow,electromagnetic swirling flow has been proposed to impose on the flow in submerged entry nozzle below the sliding gate.In this study the uneven flow developed by incompletely open sliding gate and the suppression of this uneven flow using electromagnetic swirling flow are numerically studied in round billet continuous casting of steel process.The improvement of the flow and temperature filed in the submerged entry nozzle and mold are investigated.It is found that:The uneven velocity in nozzle can be suppressed by electromagnetic swirling flow,and the flow and temperature field in mold be improved obviously;With the increase of electromagnetic swirling intensity,the effect of uneven flow can be almost completely suppressed. | LI De-wei SU Zhi-jian MARUKAWA Katsukiyo HE Ji-cheng | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 4 |
| 3 | A New Steel Teeming Technology by Using Electromagnetic Induction Heating System in Ladle显示文摘In order to overcome the pollution of the tratitional nozzle sand into the molten steel in tundish,a new method is proposed in this paper.In this method,the nozzle sand is substituted with iron-carbon alloy particles which have the same or similar compositions as the liquid steel.During casting processes,iron-carbon alloy forms solidification shell and the sintered layer in the upper nozzle to block the molten steel.When the slide gate is opened,the eletromagnetic induction heating is used to melt them so as to achieve 100%smoothly steel teeming.The electromagnetic induction heating effects were analyzed theoretically in the new slide gate system.Then the new method has been experimentally tested by using self-designed experimental device.The results show that the electromagnetic induction heating can complete the steel teeming within the required time.Furthermore,this steel-teeming technology can further improve the cleanliness of liquid steel. | LI De-jun WANG Qiang LIU Xing-an Gao Ao WANG Xue-bin DONG Jie KATSUKIYO Marukawa HE Ji-cheng | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 3 |
| 4 | Structural Optimization of Electromagnetic Swirling Flow in Nozzle of Slab Continuous Casting显示文摘During the slab continuous casting process, the flow field of molten steel in the mold plays a decisive role in the quality of the slab. In this paper, electromagnetic swirling flow in nozzle technology is proposed to control the flow field in mold.This technology can drive molten steel to rotate inside the submerged entry nozzle by electromagnetic force, thereby controlling the flow field. This research shows that it can reduce the impact of molten steel on the bottom of nozzle and partly reduce the negative pressure at the upper part of nozzle outlet which is even eliminated by optimizing the structure and angle of nozzle. The area of heat flux of the mold wall becomes larger, and the crest value of heat flux gets lower than that without swirling in nozzle and any nozzle optimization. The meniscus fluctuates smoothly, and the flow velocity at the top surface is within a reasonable range. The temperature field distribution in the mold is uniform which was beneficial to the growth of equiaxed crystal and decreased element segregation. | Xiao-Wei Zhu De-Wei Li Chun-Lei Wu Katsukiyo Marukawa Qiang Wang | 2018 | Acta Metallurgica Sinica(English Letters)2018，31，12： | 2 |
| 5 | Functional reconstruction of the non-human primate mandible using recombinant human bone morphogenetic protein-2显示文摘 | Marukawa E Asahina I Oda M | 2002 | Int J Oral Maxillofac Surg2002，31，3： | 1 |
| 6 | Class Ⅳ semaphoiin sema4A enhances T-cell activation and interacts with TIM-2显示文摘 | Kumanogoh A Marukawa S Suanki K | 2002 | Nature2002，6907，419： | 1 |
| 7 | Full-scale measurements of wind-induced vibration of a transmission line system in a mountainous area显示文摘 | Momomura Y Marukawa H Okamura T | 1997 | Journal of Wind Engineering and Industrial Aerodynamics1997，72，： | 1 |
| 8 | Condylar and disc positions after sagittal split ramus osteotomy with and without Le Fort I osteotomy 显示文摘 | Ueki K Marukawa K Shimada M | 2007 | Oral Surg Oral Med Oral Pathol Oral Radiol Endod2007，103，3： | 1 |
| 9 | Cytotoxic T cell responses to human telomerase reverse transcriptase in patients with hepatocellular carcinoma显示文摘 | Mizukoshi E Nakamoto Y Marukawa Y | 2006 | Hepatolo2006，43，6： | 1 |
| 10 | Experimental e- valuation of aerodynamic damping of tall buildings显示文摘 | MARUKAWA H KATO N FUJII K | 1996 | Journal of Wind Engineering and Industrial Aerodynamics1996，59，23： | 1 |
| 11 | Class Ⅳ Semaphorin Sema4A enhances T-cell activation and interacts with Tim-2显示文摘 | Kumanogoh A Marukawa S Suzuki K | 2002 | Nature2002，419，6907： | 1 |
| 12 | Experimental evaluation of aerodynamic damping of tall buildings 显示文摘 | Marukawa H Kato N Fujii K | 1996 | Journal of Wind Engineering and Industrial Aerodynamics1996，59，2： | 1 |
| 13 | Analytical study on wind induced vibration of power transmission towers 显示文摘 | Yasui H Marukawa H Mommura Y | 1999 | Journal of Wind Engineering and Industrial Aerodynamics1999，83，13： | 1 |
| 14 | Plasma nitrotyrosine concentration relates to prognosis in human septic shock显示文摘 | Ohya M Marukawa S Inoue T | 2002 | Shock2002，18，2： | 1 |
| 15 | Full scale measurements of wind- induced vibration of a transmission line system in a mountainous area 显示文摘 | Momomura Y Marukawa H Okamura T | 1997 | Journal of Wind Engineering andlndustrial Aerody- namics1997，72，1： | 1 |
| 16 | The assessment of blood loss in orthognathic surgery for prognathia 显示文摘 | Ueki K Marukawa K Shimada M | 2005 | J Ora Maxillofac Surg2005，63，3： | 1 |
| 17 | Analytical Study on Wind-induced Vibration of Power Transmission Tow- ers显示文摘 | YASUI H MARUKAWA H MOMOMURA Y | 1999 | Journal of Wind Engineering and Industrial Aerody- namics1999，83，2： | 1 |
| 18 | Fundamental Study on Continuous Casting Process With Swirling Flow by Electromagnetic Force显示文摘Swirling flow in a submerged entry nozzle is effective on improving quality of casting block and casting speed in continuous casting of steel.A new method for swirling flow generation in the nozzle has been proposed by the authors,that is a rotating electromagnetic field is set up around a submerged entry nozzle(SEN)to induce swirling flow in it by Lorentz force.In this study,the magnetic field in molten steel in the submerged entry nozzle,the flow and temperature field in the SEN and mold in round,square billet and slab continuous casting process of steel are numerically studied.The model experiment of electromagnetic swirling continuous casting is also conducted with low melting point alloy.The commercial test for slab is undergoing.Results by numerical simulation and experiment show that the swirling flow by the optimum designed electromagnetic swirling generator can not only improve the distribution of flow and temperature in mold but also achieve the same effects generated by the swirling blade process.And,more effects on continuous casting process can be expected after this electromagnetic swirling process is optimized. | SU Zhi-jian LI De-wei CHEN-Jin MARUKAWA Katsukiyo HE Ji-cheng | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 1 |
| 19 | Study of wind-induced response of long-span structure 显示文摘 | Yasui H Marukawa H | 1999 | Journal of Wind Engineering and Industrial Aerodynamics1999，83，： | 1 |
| 20 | Analytical study onwind-induced vibration of power transmission towers显示文摘 | Yasui H Marukawa H Mommura Y | 1999 | Journal ofWind Engineering and Industrial Aerodynamics1999，83，13： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员