A new method to track resin flow fronts, referred to as the topological interpolated method (TIM), which is based onfilling states and topological relations of adjacent nodes was proposed. An experiment on the mould f...A new method to track resin flow fronts, referred to as the topological interpolated method (TIM), which is based onfilling states and topological relations of adjacent nodes was proposed. An experiment on the mould filling process wasconducted. It was compared with exact solutions and the experimental results, and good agreements were observed.Numerical and experimental comparisons with the conventional contour mathod were also carried out, and it showedthat TIM could enhance the local accuracy of flow front solutions with respect to the contour method when mergingflow fronts and resin approaching the mold wall were involved.展开更多
Through coupling electromagnetic field equations with turbulent flow equations,the numerical prediction has been conducted on the flow field of molten steel and the trajectory of inclusion particle in the continuous c...Through coupling electromagnetic field equations with turbulent flow equations,the numerical prediction has been conducted on the flow field of molten steel and the trajectory of inclusion particle in the continuous casting mold effected by electromagnetic field.The difference between the maximum and the minimum of the shear stress on mold wall is used to scale the impingement strength of molten steel discharged from immersed nozzle to the solidifying shell on the narrow wall of mold.The flow field of molten steel in the mold is changed greatly and the impingement strength of the jet is reduced while electromagnetic field is applied.It is found that the successful control of flow field depends on the current and location of coil.At the same time,the new floating paths of inclusion particles are formed and the upward particles that are far away from the solidifying zone on the narrow wall of mold change their moving directions with the change of flow field,so that the particles can avoid being entrapped by the solidifying shell.展开更多
The application for FC-Mold(Flow Control Mold)technology is researched in Ansteel slab caster,and the fluctuations of liquid steel in different parameters are emphasis researched.The results show that the fluctuation ...The application for FC-Mold(Flow Control Mold)technology is researched in Ansteel slab caster,and the fluctuations of liquid steel in different parameters are emphasis researched.The results show that the fluctuation of liquid steel can be decreased 50%by using FC-Mold,and the value is decreased from±5mm to±2mm.The casting velocity can be increased 0.5m/min by using FC-Mold.The effect of FC-Mold is increased with increasing of current.And FC-Mold can restrain the unstable liquid steel from velocity changing.The statistic application results for 610 strands show that the degraded ratio for automobile steel is decreased 6%.展开更多
基金This work is supported by the National Natural Science Foundation of China(No.10372027).
文摘A new method to track resin flow fronts, referred to as the topological interpolated method (TIM), which is based onfilling states and topological relations of adjacent nodes was proposed. An experiment on the mould filling process wasconducted. It was compared with exact solutions and the experimental results, and good agreements were observed.Numerical and experimental comparisons with the conventional contour mathod were also carried out, and it showedthat TIM could enhance the local accuracy of flow front solutions with respect to the contour method when mergingflow fronts and resin approaching the mold wall were involved.
基金This project is sponsored by China Academic Association
文摘Through coupling electromagnetic field equations with turbulent flow equations,the numerical prediction has been conducted on the flow field of molten steel and the trajectory of inclusion particle in the continuous casting mold effected by electromagnetic field.The difference between the maximum and the minimum of the shear stress on mold wall is used to scale the impingement strength of molten steel discharged from immersed nozzle to the solidifying shell on the narrow wall of mold.The flow field of molten steel in the mold is changed greatly and the impingement strength of the jet is reduced while electromagnetic field is applied.It is found that the successful control of flow field depends on the current and location of coil.At the same time,the new floating paths of inclusion particles are formed and the upward particles that are far away from the solidifying zone on the narrow wall of mold change their moving directions with the change of flow field,so that the particles can avoid being entrapped by the solidifying shell.
基金Item Sponsored by the Postdoctoral Gathering Project in Liaoning Province[No.2011921003]
文摘The application for FC-Mold(Flow Control Mold)technology is researched in Ansteel slab caster,and the fluctuations of liquid steel in different parameters are emphasis researched.The results show that the fluctuation of liquid steel can be decreased 50%by using FC-Mold,and the value is decreased from±5mm to±2mm.The casting velocity can be increased 0.5m/min by using FC-Mold.The effect of FC-Mold is increased with increasing of current.And FC-Mold can restrain the unstable liquid steel from velocity changing.The statistic application results for 610 strands show that the degraded ratio for automobile steel is decreased 6%.
