Experimental Research and Numerical Simulation of Mold Temperature Field in Continuous Casting of Steel

Zheng, Xianshu; Sha, M.H.; Jun-ze, Jin

doi:10.1016/s1006-7191(06)60041-0

Cited by 20 publications

(9 citation statements)

References 3 publications

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“…Studies which employ numerical analysis models to calculate the thermal characteristics of the copper mold during processing apply to the model heat transfer coefficients obtained from the Dittus and Boelter equation [18,20,21], which is expressed as [25]: (7) where D is the slot's hydraulic diameter, kw is the conductivity of the cooling water, µ w is the viscosity of the cooling water, ρ w is the density of the water, C Pw is the specific heat of the cooling water and V w is the cooling water flow velocity.…”

Section: Effects Of Cooling Water Flow Velocitymentioning

confidence: 99%

“…The research of surface defects such as corner cracks have been studied actively. [19] In contrast, researches on the thermal behavior of the copper mold have been relatively scarce [20][21][22], considering its importance in the early solidification stage.…”

Section: Introductionmentioning

confidence: 99%

“…There have been several approaches to the analysis of the thermal behavior of a mold that have used the Dittus and Boelter equation to describe the heat transfer coefficients of a mold [20][21][22][23]. Such studies have been limited to obtaining the average values of heat transfer coefficients rather than their local properties.…”

Section: Introductionmentioning

confidence: 99%

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Numerical modeling and analysis of the thermal behavior of copper molds in continuous casting

Park

et al. 2010

Met. Mater. Int.

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In this study, we establish a 3-D numerical analysis model to analyze the thermal behavior and to obtain the detailed heat transfer coefficient of a copper mold in a continuous casting system. This heat transfer coefficient changes according to variations in the mold geometry or cooling system. For increased flow speeds of the cooling water, the heat transfer coefficient also increases, but the rate of increase for the coefficient diminishes at higher flow speeds. As the thickness of the mold between the melt and the cooling water slots increases, the mold's heat transfer coefficient decreases. However, the uniformity of the heat transfer coefficient improves with greater thickness. The effect of distance between cooling water slots on the mold's heat transfer coefficient is also observed. Calculations show that greater distances between cooling water slots decrease the heat transfer coefficient.

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Section: Effects Of Cooling Water Flow Velocitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical modeling and analysis of the thermal behavior of copper molds in continuous casting

Park

et al. 2010

Met. Mater. Int.

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“…The FLUENT fluid simulation module in ANSYS, a type of professional CFD software for simulating fluid flow and heat exchange [26], can fit in a variety of complex regional or boundary conditions. Provided with a range of meshing methods, such as structured grids or unstructured grids, FLUENT can easily fulfill the task to mesh different complex structures or complex design areas [27]. Moreover, users can also perform overall and partial fine operations on the grids according to their usage and specific accuracy requirements, such as encrypting the grids of the contact surface and the corner grids.…”

Section: Modeling and System Design 31 Introduction To The Softwarementioning

confidence: 99%

Numerical simulation of vertical mold casting temperature field of copper anode plates

2020

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As an important raw material for refining copper by electrolysis, copper anode plates are mainly manufactured by disc casting machine. However, those copper anode plates frequently have such defects as uneven thickness, broken lugs, porosity inside plates, and low production efficiency and low yield rate, failing to meet the demands of electrolysis for the quality and quantity of anode plates. To develop a new vertical mold casting process for copper anode plates and study the influence of cooling on the life of the machine during vertical mold casting, two design schemes of cooling channels for the high-temperature working mode of copper anode plate production were put forward in this paper, and ANSYS was introduced to simulate and analyze the flow state, flow rate and temperature field of the cooling water. The results indicated that the vertical mold with the double-cycle cooling channel is about 2 °C lower than that with the single-cycle cooling channel. The temperature of the former at point A outside and point B near the lug inside the vertical mold is 20 °C–30 °C higher than that of the latter. The temperature of vertical mold casting copper anode plates with double-cycle cooling channel is below 700 °C when casting for 50 s, suggesting that the copper anode plates have more uniform temperature and higher cooling efficiency with the double-cycle cooling channel, which can prolong the service life of the casting machine. The research results lay a theoretical foundation for the manufacture of copper anode plates and the improved design of the copper vertical mold casting machine.

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“…Both the liquid and solid phase temperature of the workpiece in the MTCS process must be obtained accurately to determine the quantitative relationship between the forming state and mold temperature control parameters[ 6 10]. The research method of combining numerical simulation with experiments is valid [6'8].…”

Section: Introductionmentioning

confidence: 99%

Research on Temperature Measure and Control Method in Mold-Temperature-Control Solidification

You¹,

Shao²,

Zhou³

et al. 2007

2007 IEEE International Conference on Control and Automation

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A temperature measure & control method was presented in terms of the mold-temperature-control solidification (MTCS) process and validated by experiments. The applied system collects the temperature data using the data collection module and 8 thermocouples placed in the mold. By comparing the measured data with the set temperature control thresholds, the system signals to switch the heating pipes or electromagnetic valves fixed on the channels. The flow control was implemented by developing the application based on the MCGS configuration software. Two experimental control cases whose cooling start thresholds are 500 C and 400 C respectively were done. The results indicate that in case 1, the simultaneous opening of the side and bottom channels lead to the shrinkage cavities in upper center of the part, and in case 2, the forming quality was promoted because solidification was orderly completed from bottom to top by means of reasonably controlling the opening time of the side channels.

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Experimental Research and Numerical Simulation of Mold Temperature Field in Continuous Casting of Steel

Cited by 20 publications

References 3 publications

Numerical modeling and analysis of the thermal behavior of copper molds in continuous casting

Numerical modeling and analysis of the thermal behavior of copper molds in continuous casting

Numerical simulation of vertical mold casting temperature field of copper anode plates

Research on Temperature Measure and Control Method in Mold-Temperature-Control Solidification

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