Magnetic‐Flow‐Thermal Characteristics of An Innovative Four‐Channel Induction Heating Tundish

Chen, Xiqing; Xiao, H.; Wang, Pu; He, Hao; Tang, Haiyan; Zhang, Jiaquan

doi:10.1002/srin.202100839

Cited by 10 publications

(6 citation statements)

References 32 publications

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“…The characteristic cross-section used is shown in Figure 1 a, including the longitudinal cross-sections at the location of the channels and circular cross-sections at the center of the channels. The process of establishing the electromagnetic-flow-heat coupling model for this multi-strand four-channel IH tundish has been demonstrated in the author’s previous studies [ 26 ]. In these studies, solving the electromagnetic field involves solving Maxwell’s equations, while describing the flow and heat transfer behavior of molten steel in the tundish requires solving the continuity equation, momentum equation (Navier–Stokes equation), turbulence control equation (k-ε equation), and energy equation.…”

Section: Model Descriptionmentioning

confidence: 99%

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Research on the Relative Placement Angle of the Induction Heater and the Channel in a Four-Channel Induction-Heating Tundish

Chen,

Wang,

Xiao

et al. 2024

Materials

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In order to optimize the application effect of induction heating (IH) tundishes, a four-channel IH tundish is taken as the research object. Based on numerical simulation methods, the influence of different relative placement angles of induction heaters and channels on the electromagnetic field, flow field and temperature field of the tundish is investigated. We focus on comparing the magnetic flux density (B) and electromagnetic force (EMF) distribution of the channel. The results show that regardless of the relative placement angle between the heater and the channel, the distribution of B in the central circular cross-section of the channel is eccentric. When the heater rotates around channel 1 towards the bottom of the tundish, the distribution of B in the central circular cross-section of the channel changes from a horizontal eccentricity to a vertical one. Through the analysis of the B contour in the longitudinal section of the channel, the difference in effective magnetic flux density area (ΔAB) between the upper and lower parts of the channel can be obtained, thereby quantitatively analyzing the distribution of B in this section. The distribution pattern of ΔAB is consistent with the distribution pattern of the electromagnetic force in the vertical direction (FZ) of the channel centerline. The ΔAB and FZ of channel 1 gradually increase as the heater rotates downwards, while those of channel 2 reach their maximum value at a rotation angle of 60°. Compared to the conventional placement, when the heater rotation angle is 60°, the outlet flow velocities at channel 1 and channel 2 decrease by 15% and 12%, respectively. However, the outlet temperature at channel 2 increases by 1.96 K, and the molten steel flow at the outlet of channel 1 and channel 2 no longer exhibits significant downward flow. This shows that when the heater rotation angle is 60°, it has a dual advantage. On the one hand, it is helpful to reduce the erosion of the molten steel on the channel and the bottom of the discharging chamber, and on the other hand, it can more effectively exert the heating effect of the induction heater on the molten steel in the channel. This presents a new approach to enhance the application effectiveness of IH tundish.

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Section: Model Descriptionmentioning

confidence: 99%

“…The geometric parameters and material properties for simulation calculations are listed in Table 1 . The remaining detailed information can be found in the literature [ 26 ].…”

Section: Model Descriptionmentioning

confidence: 99%

Research on the Relative Placement Angle of the Induction Heater and the Channel in a Four-Channel Induction-Heating Tundish

Chen,

Wang,

Xiao

et al. 2024

Materials

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“…It can be seen from the simulation results in Figure 7 that, compared with the dual-channel tundish, the flow field of the four-channel tundish is better, which can significantly improve the fluid flow control and reduce the scouring of the channel sidewall; the standard deviation of the average residence time is also lower. Moreover, the temperature of the four-channel tundish is more uniform, and the consistency of the outlet temperature is better than that of the dual-channel tundish [ 66 ].…”

Section: Physical Field and Inclusion Characteristics In Ihtmentioning

confidence: 99%

“… The 3D streamline patterns of molten steel in the tundish and the temperature distribution in the longitudinal section through the outlets of each strand; ( a , c ) are the double channel; ( b , d ) are four channels [ 66 ]. © 2022 Wiley-VCH GmbH.…”

Section: Figurementioning

confidence: 99%

Channel-Type Induction Heating Tundish Technology for Continuous Casting: A Review

Wang

et al. 2023

Materials

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With the increasing demand for special steel, the quality of steel has become critical during the continuous casting tundish process. In recent years, tundish heating technology has played a key role in low superheat casting. Toward this, researchers have reported on the metallurgical effects of induction heating tundish (IHT). From 1984 to date, the channel-type IHT has been investigated in the production of continuous casting of special steel. In this article, the principle of this channel-type IHT technology and equipment composition were illustrated. A brief summary and comments were undertaken on the channel-type IHT, including physical modeling and numerical modeling. The application development trend of tundish induction heating equipment is summarized combined with industrial application data, which provide a reference for a better understanding of the induction heating process of tundish.

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“…1,2 To enhance steel flow and improve cleanliness, various approaches have been explored, including the addition of flow control devices, [3][4][5] redesigning the tundish structure [6][7][8] and utilising electromagnetic flow control equipment. [9][10][11] While redesigning the tundish structure can be effective in enhancing flow behaviour and increasing inclusion removal efficiency, it often necessitates costly replacement and results in more complex structures. Similarly, using electromagnetic flow control equipment incurs higher equipment costs and requires multiple trial runs.…”

Section: Introductionmentioning

confidence: 99%

Structural optimisation of three-strand asymmetric tundish for super large round bloom continuous casting

Chen,

Bai,

Feng

et al. 2024

Ironmaking & Steelmaking: Processes, Products and Applicati

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In recent years, there has been significant development in the large-scale utilisation of round bloom continuous casting, which has led to an increase in the strand spacing of the tundish. However, this increase often accompanies issues such as poor consistency among each strand. This study focuses on the three-strand asymmetric tundish used in super-large round bloom continuous casting and uses a combination of numerical simulation and physical experiment to investigate the impact of different dam and retaining wall structures on the flow, temperature and removal of inclusions in the super-large round bloom tundish. The reliability of the model is verified through isothermal Water model experiments. The results indicate that by employing an optimised flow control structure with a U-shaped retaining wall featuring small diversion holes and a dam near each of strands No.1 and No.3, several improvements are achieved compared to the prototype tundish. The dead zone ratio of the tundish is reduced by 16.33%, the standard deviation of average residence time decreases by 167.07 s, the volume of the tundish's low temperature zone decreases by 7.79% and the total inclusion removal ratio increases by 14.44%. By appropriately incorporating dams, reducing the area of diversion holes and modifying the retaining wall structure in the tundish, the flow, temperature and inclusion removal consistency of each strand can be effectively improved. This enhances the overall metallurgical efficiency of the tundish. Even when encountering strand blocking operation, the dead zone ratio can be further reduced to 22.44% using the optimised structure proposed in this study. This demonstrates that the optimised structure not only improves the steady-state metallurgical behaviour of the asymmetric three-strand tundish with large strand spacing for super-large round bloom but is also suitable for addressing unsteady-state metallurgical behaviour caused by on-site working conditions, such as production scheduling or high casting speed. By implementing the findings of this study, it is expected that the efficiency and effectiveness of the super-large round bloom continuous casting process will be significantly enhanced.

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Magnetic‐Flow‐Thermal Characteristics of An Innovative Four‐Channel Induction Heating Tundish

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/srin.202100839.

Cited by 10 publications

References 32 publications

Research on the Relative Placement Angle of the Induction Heater and the Channel in a Four-Channel Induction-Heating Tundish

Research on the Relative Placement Angle of the Induction Heater and the Channel in a Four-Channel Induction-Heating Tundish

Channel-Type Induction Heating Tundish Technology for Continuous Casting: A Review

Structural optimisation of three-strand asymmetric tundish for super large round bloom continuous casting

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