Improving the erosion resistance of the submerged entry nozzle by applying an external electric field

Tian, Chen; Zhi, Junge; Gan, Feifang; Fan, Zhengjie; Gao, Huajian; Yuan, Lei; Wen, Tianpeng; Yu, Jingkun; Liu, Guoqi; Li, Hongxia

doi:10.1016/j.ceramint.2022.09.308

Cited by 7 publications

(7 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure 1, for the main materials, the SEN used in the continuous casting process of GCr15 is mainly composed of Al 2 O 3 and graphite, and a little ZrO 2 is also added to resist erosion. [29] Meanwhile, at the slag-line, the ZrO 2 and graphite are the main composition to prevent the slag-line materials from eroding quickly by the mold flux. [22,30] 3.…”

Section: Metallurgy Procedures and Sen Compositionmentioning

confidence: 99%

Functional Failure Behavior of Submerged Entry Nozzle during the Continuous Casting Process of the Bearing Steel GCr15

Tian,

Zhang,

Liu

et al. 2024

steel research int.

Self Cite

View full text Add to dashboard Cite

The submerged entry nozzle (SEN) is an indispensable functional structural ceramic in the current continuous casting production. The stability and safety of the SEN is very important during the casting process. In this article, the functional failure of the SEN during the continuous casting process of the bearing steel GCr15 is studied. The results show that the functional failure of the SEN during the bearing steel GCr15 casting process is caused by the clogging inside the SEN which is led by the low cleanliness and the high impurities n the molten steel. The clogging in the SEN can be divided into solidified steel area, loose area, dense area, and surface area. To improve the castability of bearing steel or other high‐cleanliness steel, it is necessary to strengthen the refining process and treatment effect, strengthen the sealing and the effect of the protective casting of the molten steel, and moderate optimization of nozzle materials or the application of external fields on the SEN.

show abstract

Section: Metallurgy Procedures and Sen Compositionmentioning

confidence: 99%

Functional Failure Behavior of Submerged Entry Nozzle during the Continuous Casting Process of the Bearing Steel GCr15

Tian,

Zhang,

Liu

et al. 2024

steel research int.

Self Cite

View full text Add to dashboard Cite

show abstract

“…This was because the mold flux used in the continuous casting often added a certain amount of carbonaceous substances (like graphite) as a melting rate regulator and antioxidant, which was not relevant for the corrosion of the slag-line. [24,25] After the premelting was completed, the mold flux was cut and polished into a cuboid specimen according to the equipment requirements (3.5 Â 3.5 Â 4.0 mm).…”

Section: Materials Preparationmentioning

confidence: 99%

“…of the electric field, a stable and highly viscous protective layer can be formed on the surface of the slag-line materials to resist the alternate scouring and corrosion of the mold flux and molten steel. [23][24][25] However, in actual continuous casting, whether the protective layer can stably form and adhere to the surface of the slag-line is directly related to the wettability and interface reaction between the mold flux and the slag-line materials. Moreover, the applied electric field also affects the interfacial reaction, wetting process, and wettability between the mold flux and the slag-line materials.…”

Section: Introductionmentioning

confidence: 99%

Interface Wetting and Reaction Behavior between Mold Flux and Submerged Entry Nozzle under an External Electric Field

Tian

Yuan

Peng

et al. 2023

steel research int.

Self Cite

View full text Add to dashboard Cite

Herein, to provide theoretical foundation and experimental data for using electric field to control the service performance and improve the service life of submerged entry nozzle, the effect of the external electric field on the interfacial reaction and wetting behavior between the mold flux and the slag‐line materials is studied. It is shown in the results that the wettability of mold flux on the surface of the slag‐line materials is mainly affected by the dissolution and spreading under normal conditions. However, the electrochemical reaction and electric force generated by the applied electric field are also important factors for driving and changing the wettability between the mold flux and slag‐line materials. Under the positive electric field, the total duration of complete spreading and wetting is 227 s, which is 13 s shorter than that under normal conditions; the contact angle after complete wetting is about 17°, which is 1.5° lower than that under normal conditions. Under the negative electric field, the total duration of complete spreading and wetting is 260 s, which is 20 s longer than that under normal conditions; the contact angle after complete wetting is about 21°, which is 2.5° higher than that under normal conditions.

show abstract

“…It is worth noting that there is a gradual growth in the use an electric field to solve clogging challenges with in metallurgy 21–27 . Yu et al.…”

Section: Introductionmentioning

confidence: 99%

“…It is worth noting that there is a gradual growth in the use an electric field to solve clogging challenges with in metallurgy. [21][22][23][24][25][26][27] Yu et al pointed out that the Al 2 O 3 inclusions adhere to the nozzle wall and form the clogging because of the "Charing" phenomenon caused by inclusions under high-speed friction. 28 Therefore, if the charging behavior and motion state of these "Charing" inclusions can be controlled and changed by applying an appropriate electric field, the clogging problem on the inner wall of the SEN by aluminum-killed steel can be effectively reduced.…”

Section: Introductionmentioning

confidence: 99%

Effect of the reaction process between the SEN and molten steel containing aluminum by applying an electric field

Tian

Yuan

Liu

et al. 2023

Int J Applied Ceramic Tech

Self Cite

View full text Add to dashboard Cite

In view of the clogging problem associated with submerged entry nozzles (SEN) used for aluminum‐killed steel, the reaction behavior between the SEN and molten steel with high Al content with the influence of an external electric field is studied in this paper. The results showed that the application of an effective and positive voltage to the walls of the SEN would promote the decarburization of the SEN itself and the interfacial reaction between nozzle material and molten steel containing aluminum. On the contrary, these behaviors would be inhibited under the control of the negative voltage. Therefore, with the polarity of electric field applied on the SEN, it is necessary to determine whether the critical factor leading to clogging is the content of the Al2O3 inclusions or Al alloy content in the steel.

show abstract

Improving the erosion resistance of the submerged entry nozzle by applying an external electric field

Cited by 7 publications

References 31 publications

Functional Failure Behavior of Submerged Entry Nozzle during the Continuous Casting Process of the Bearing Steel GCr15

Functional Failure Behavior of Submerged Entry Nozzle during the Continuous Casting Process of the Bearing Steel GCr15

Interface Wetting and Reaction Behavior between Mold Flux and Submerged Entry Nozzle under an External Electric Field

Effect of the reaction process between the SEN and molten steel containing aluminum by applying an electric field

Contact Info

Product

Resources

About