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| Analytical and experimental on the flow rule of molten pool for twin roll strip casting |
| DU Feng-shan，[LU] Zheng，WANG San-zhong，HUANG Hua-gui，SUN Jing-na，XU Zhi-qiang |
| （National Engineering Research Center for Equipment and Technology of Cold Strip Rolling， Yanshan University， Qinhuangdao 066004， Hebei， China） |
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Abstract According to the similarity principle，a water model experiment platform for Twin-roll strip casting was set up by 1[∶]1，then the influence of casting speed on the flow of molten pool has been studied，and a low-Reynolds-number turbulence mathematic model was developed to study the flow field and the temperature field of the molten pool. The results showed that the backflow occurred at the center region of molten pool by the effects of fluid viscosity and the rollers extrusion. The center region backflow would stir the molten pool and reduce the temperature to some extent which would make the temperature field and solute field uniform and steady. With the casting speed increased，the location of backflow would move down，the area of backflow zone would enlarge，and the effect of backflow would enhance. However，rapid casting speed would exacerbate the fluid level fluctuation or decrease the location of Kiss point excessively，which can affect the production quality.
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Received: 02 April 2015
Published: 06 January 2016
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2016, Vol. 51 
