Heat Transfer of Steel in a Slab Tundish with Vacuum Chamber

Zhou, Jianan; Xie, Jian‐bo; Bao, Wang; Lei, Hong; Zhang, Hua; Ni, Hongwei

doi:10.2355/isijinternational.isijint-2016-550

Cited by 10 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tundishes are widely used to supply and distribute liquid steel into molds during continuous casting [ 1 , 2 , 3 ]. The different distances between the ladle shroud and each strand means that weirs, turbo-stoppers, and diversion holes with different injection angles have to be applied in multi-strand tundishes to provide effective control during industrial production processes [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Multiple-Hole Baffle Arrangements on Flow Fields in a Five-Strand Asymmetric Tundish

et al. 2020

View full text Add to dashboard Cite

This paper reports on the re-engineering of standard five-strand tundish designs into a five-strand asymmetric tundish, which resulted in a non-uniform rate and bias for each strand. We sought to improve the casting conditions by optimizing the liquid steel flow-field in the tundish. Both a water modelling experiment and a numerical simulation were performed to analyze the flow-field according to various diversion hole diameters and injection angles. The results showed that the average residence time decreased as the diameter of the diversion holes increased. As the injection angle was increased, the average residence time initially decreased and then increased. The liquid steel from the ladle shroud rapidly extended to the #2 and #3 strands in the original tundish, which reduced the likelihood of inclusion collision and coalescence.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of Multiple-Hole Baffle Arrangements on Flow Fields in a Five-Strand Asymmetric Tundish

et al. 2020

View full text Add to dashboard Cite

show abstract

“…One is to reduce the heat loss, such as adding flux, using tundish cover and tundish vacuum chamber. [10][11][12][13] The other is to supply the external heat source, such as plasma heating [14,15] and channel-type induction heating. [16,17] In 1985, on the base of the transformer principle, Yoshii et al [17,18] proposed the channel-type induction heating technology.…”

Section: Introductionmentioning

confidence: 99%

“…One is to reduce the heat loss, such as adding flux, using tundish cover and tundish vacuum chamber. [ 10–13 ] The other is to supply the external heat source, such as plasma heating [ 14,15 ] and channel‐type induction heating. [ 16,17 ]…”

Section: Introductionmentioning

confidence: 99%

Deep Insight into the Pinch Effect in a Tundish with Channel‐Type Induction Heater

Zhang

Lei

Ding

et al. 2022

steel research int.

Self Cite

View full text Add to dashboard Cite

Tundish with channel-type induction heater plays an important role in the continuous casting of high-quality steel. Electromagnetic pinch is a unique phenomenon in the tundish with channel type induction heater. To have a deep insight into the electromagnetic pinch effect, numerical simulation is applied to investigate the magnetohydrodynamic flow in the tundish. Research results show that the magnetic field, flow field, and temperature field predicted by the mathematical model agree well with the experimental data. Induced current density, magnetic flux density, electromagnetic force, and Joule heat in two channels are symmetrically distributed and are greater than that in the receiving and distributing chambers. The eccentric electromagnetic force leads to the single-/double-recirculation zones in the channel. There are larger separation areas in the channel enclosed with the iron core than in the other channel, and it is easy for molten steel to separate from the channel wall surface at the top of the channel. Different forces play different roles in the pinch condition, and the order of importance is as follows: electromagnetic force, stress, gravity, supporting force, centrifugal force, and thermal buoyancy.

show abstract

“…During the continuous casting process, the steady casting with low superheat and constant temperature will be under an unfavorable condition, which is the temperature drop of molten steel due to the heat losses caused by both the thermal radiation on the surface of the liquid steel and the heat absorption of the tundish wall, especially the inevitable great temperature drop during the initial casting stage, period of changing the steel ladle, and final casting stage. As a result, it will affect the quality of the casting slab [5]. Recently, induction heating tundish has been presented to improve the temperature distribution of molten steel and keep the temperature unchanged in continuous casting tundish.…”

Section: Introductionmentioning

confidence: 99%

Flow Field, Temperature Field, and Inclusion Removal in a New Induction Heating Tundish with Bent Channels

Xing

Zheng

Zong-hui

et al. 2019

Metals

View full text Add to dashboard Cite

In order to study the flow field, temperature field, and inclusion removal in a new induction heating tundish with bent channels, a three-dimensional (3D) transient mathematical model is established. The effects of both the channel radius and heating power on the multi-physical field and inclusion removal in the bent channels’ induction heating tundish are investigated. The results show that the tundish with the channel radius of 3 m shows better flow characteristics than those with the channel radii of 4 m and 2 m. With the increase of channel length, the heating efficiency increases at first, and then decreases, while the radius of 3 m is the best one for heating efficiency. After all the inclusions are placed into the tundish, the radii of 3 m and 2 m show good efficiency regarding inclusion removal, while it is poor when the radius is 4 m. Therefore, 3 m is the optimal radius of the channel in this work. Under the optimal channel radius, the heating power of 800 kW seems better than those of 600 kW and 1000 kW on flow characteristics control in the tundish. The temperature in the receiving chamber rises gradually and distributes quite uniformly with the increasing heating power, and the removal rate of inclusions increases with the increasing heating power.

show abstract

Heat Transfer of Steel in a Slab Tundish with Vacuum Chamber

Cited by 10 publications

References 16 publications

Effects of Multiple-Hole Baffle Arrangements on Flow Fields in a Five-Strand Asymmetric Tundish

Effects of Multiple-Hole Baffle Arrangements on Flow Fields in a Five-Strand Asymmetric Tundish

Deep Insight into the Pinch Effect in a Tundish with Channel‐Type Induction Heater

Flow Field, Temperature Field, and Inclusion Removal in a New Induction Heating Tundish with Bent Channels

Contact Info

Product

Resources

About