Twin Roll Casting of Steels: An Overview

Maleki, Ali; Taherizadeh, Aboozar; Hosseini, Nazanin

doi:10.2355/isijinternational.isijint-2016-502

Cited by 57 publications

(17 citation statements)

References 36 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to improve performance and reduce costs and energy consumption, steel companies are gradually exploring the preparation of NOES through a short-process technology. In recent years, the advanced short-process preparation technology of steel materials has mainly included CSP (compact strip production) and TRSC (twin-roll strip casting) [15,16]. In the CSP process, the molten steel is cast into a 50-70 mm thin slab and then directly rolled into a coil through a finishing mill.…”

Section: Introductionmentioning

confidence: 99%

Role of Hot Rolling in Microstructure and Texture Development of Strip Cast Non-Oriented Electrical Steel

Jiao

Xie

et al. 2022

Metals

View full text Add to dashboard Cite

In this study, the effect of the hot-cold rolling process on the evolution of the microstructure, texture and magnetic properties of strip-cast non-oriented electrical steel was investigated by introducing hot rolling with different reductions. The results indicate that hot rolling with an appropriate reduction, such as the 20% used in this study, increases the shear bands and {100} deformed microstructure in the cold roll sheet. As a result, in our study, enhanced η and Cube recrystallization texture and the improved magnetic induction were obtained. However, hot rolling with excessive reduction (36–52%) decreased the shear bands and increased the α-oriented deformation microstructure with low stored energy. It enhanced the α recrystallization texture and weakened the η texture, resulting in a decrease in the magnetic induction. In addition, hot rolling promoted the precipitation of supersaturated solid solution elements in the as-cast strip, thereby affecting the subsequent microstructure evolution and the optimization of its magnetic properties.

show abstract

Section: Introductionmentioning

confidence: 99%

Role of Hot Rolling in Microstructure and Texture Development of Strip Cast Non-Oriented Electrical Steel

Jiao

Xie

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

“…Because of the absence of molten slag, molten steel can directly contact with the water-cooled copper mold, and thus achieve a cooling rate of 1000-10,000 K/s (subrapid solidification) [1]. This would bring many benefits on the solidification microstructure, such as high solid solubility of alloying elements, refinement of grain size, attenuation of elements segregation, and crystallographic texture [6].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Subrapid Solidification and Secondary Cooling for the Strip Casting of IF Steel

et al. 2021

View full text Add to dashboard Cite

A combination of droplet solidification tester and confocal laser scanning microscope was used to simulate subrapid solidification and secondary cooling process pertinent to the strip casting. The IF steel droplet had a delamination structure and the bottom part went through sub-rapid solidification. During secondary cooling, γ/α transformation mechanism belonged to interface-controlled massive transformation and the ferrite grains grew quickly. With the increase of cooling rate, the γ/α transformation temperature decreased and the incubation period and phase transformation duration reduced. The hardness showed a slight increase due to fine-grain strengthening. With coiling temperature increasing from 600 °C to 800 °C, the grain size became larger, precipitates became coarse, and defects in grain were recovered. Consequently, the hardness decreased.

show abstract

“…AS an advanced technique, strip casting can directly cast the liquid steel into steel thin strips (several millimeters in thickness) without the following tedious rolling steps needed by conventional continuous casting (CCC). [1][2][3][4] Among all developed strip casting techniques, twin-roll casting (TRC) is the most mature one. Usually, the average cooling rate for the solidification of initial shell during the TRC process is around 1700 °C s À1 , [3,5] which belongs to sub-rapid solidification and is far higher than that during the conventional continuous casting and thin-slab casting (TSC) processes.…”

Section: Introductionmentioning

confidence: 99%

Formation of Deposited Oxide Film during the Sub-rapid Solidification of Silicon Steel Droplet and Its Effect on Interfacial Heat Transfer Behavior

Wang

Cai

et al. 2021

Metall Mater Trans B

View full text Add to dashboard Cite

The droplet solidification technique was used to investigate the formation of deposited film and the interfacial heat transfer for the sub-rapid solidification of silicon steels. The composition of deposited films consists of MnO, FeO and SiO 2 for both the low and high-silicon steels. The deposited film could improve the wetting condition between the steel droplet and substrate. And the wetting condition between the droplet and substrate improves with the increasing of ejection times from 1 to 9, and thus the final contact angles decrease gradually from 105.1 to 72.8 deg. The peak value of heat flux increases with the number of solidification tests, indicating that the heat transfer condition between the droplet and substrate improves with the deposition of film. The peak value of heat flux increases from 5.64 to 7.42 MW/m 2 for low-silicon steel after the 9th ejection, and it is from 6.03 to 9.06 MW/m 2 for high-silicon steel. This is because the interfacial thermal resistance between the droplet and substrate reduces gradually with the increasing of test times. A higher Mn content in the high-silicon steel leads to a higher deposited rate of the oxide film than the low-silicon steel. Compared with the low-silicon steel, the increment of MnO content in the film for the high-silicon steel is 6.60 wt pct, and there is no obvious increment of SiO 2 in the film, though the increment of Si in high-silicon steel is 6.06 wt pct, and for Mn is only 0.72 wt pct.

show abstract

Twin Roll Casting of Steels: An Overview

Cited by 57 publications

References 36 publications

Role of Hot Rolling in Microstructure and Texture Development of Strip Cast Non-Oriented Electrical Steel

Role of Hot Rolling in Microstructure and Texture Development of Strip Cast Non-Oriented Electrical Steel

Simulation of Subrapid Solidification and Secondary Cooling for the Strip Casting of IF Steel

Formation of Deposited Oxide Film during the Sub-rapid Solidification of Silicon Steel Droplet and Its Effect on Interfacial Heat Transfer Behavior

Contact Info

Product

Resources

About