Temperature Influence on Section Uniformity of Casting Steel Rolled with the Hot-Core Heavy Reduction Rolling Process and Traditional Hot Rolling Process

Li, Ruihao; Li, Haijun; Ning, Xinyu; Li, Tianxiang; Wu, Hao; Wang, Guodong

doi:10.1007/s11665-022-06776-7

Cited by 5 publications

(4 citation statements)

References 30 publications

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“…The previous work has completed a lot of calculation preparation works. First, the calculation model of the billet temperature field has been established, and the rolling stress-permeability of the billet during the HHR 2 process has been analysed [33]. Furthermore, the true stress–strain curve and constitutive model of high-carbon steel near solidification have been obtained [34], which provide strong support for the calculation parameters in the current study.…”

Section: Introductionmentioning

confidence: 75%

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Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Wang

et al. 2022

Ironmaking & Steelmaking

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The hot-core heavy reduction rolling (HHR 2 ) technology is a solidification end reduction technique to enhance the quality of steel. In the current study, the Cellular Automata (CA) calculation is applied to investigate the casting process before HHR2 and the HHR2 dynamic recrystallization (DRX) process. The experimental data and calculation data are compared to verify the accuracy of the method and models. Afterward, based on the actual casting process, the solidification structure in the thickness direction of a billet is calculated, and the influence on the HHR2 grain size of various conditions, such as rolling speed, deformation temperature, and reduction strain, is simulated. Furthermore, based on the fixed HHR2 process, the influence of different superheats, casting speeds, and cooling conditions on the core-surface temperature schedule and the grain size before and after HHR2 deformation is calculated. Finally, the process optimization trend to produce high-carbon bearing steel billet is obtained.

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Section: Introductionmentioning

confidence: 75%

“…Lin's research [46] has also reached a similar conclusion. However, the process of HHR 2 deform casting billet is more complicated [33]. As shown above, there is a temperature gradient in the thickness direction on a billet, and the change in the structure grain size also adds more difficulties to the analysis.…”

Section: Resultsmentioning

confidence: 99%

Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Wang

et al. 2022

Ironmaking & Steelmaking

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“…Li et al [15] discovered that due to the temperature gradients, the HTRP process can cause significant plastic deformation in the center of the ingot with small deformation. Li et al [16] found that higher temperature gradients are conducive to obtaining the higher density quality. Liu et al [17] investigated the HTRP process with different amounts of reduction and found that as the reduction amount of the HTRP sample increased, the size of recrystallized austenite grains significantly decreased, leading to an improvement in internal segregation.…”

Section: Doi: 101002/srin202300422mentioning

confidence: 99%

Effects of Deformation Penetration and Recrystallization on the Internal Quality of Casting Ingot

Cheng,

Liu,

Liu

et al. 2024

steel research int.

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To investigate the influence of rolling passes on the internal quality during high‐temperature reduction pretreatment (HTRP), three cast ingots with identical total reduction but varying numbers of rolling passes are prepared. The 3D distribution, size, and quantity of defects are analyzed using ultrasonic nondestructive microscopy. The effect of rolling passes on defect healing is studied, with macrostructure, microstructure, and grain size analysis aided by finite element software. In contrast to the three‐pass HTRP, the one‐pass HTRP demonstrates a diminishment of 7% in defect dimensions and a notable decline of 66% in the quantity of defects. The results reveal that increasing the number of rolling passes leads to a deterioration in internal quality of the slab. Reducing the number of rolling passes improves internal strain penetration, facilitates the recrystallization process, and enhances the microstructure uniformity, ultimately improving the internal quality.

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“…On the other hand, alternatives to conventional or variants of hot rolling processes are also being modeled and simulated. An interesting approach is a process presented as "Hot Core Heavy Reduction Rolling", the properties of which are discussed in [16][17][18][19] based on numerical and analytical studies and experimental data. In addition to simulating void healing in heavy plates, by deploying FE and phase-field simulation [20], the hot rolling of clad plates has also received increased attention recently, as numerical and experimental work shows [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Modular Finite Element Modeling of Heavy Plate Rolling Processes Using Customized Model Reduction Approaches

Nemetz,

Parteder,

Reimer

et al. 2024

Metals

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Heavy plates are indispensable semi-finished products. Quality is strongly linked with production, so the rolling process must be performed within well-defined narrow tolerances. To meet this challenge, adequate modeling has become a necessity. In contrast to continuous strip rolling, where the workpiece can be modeled as a semi-infinite strip and 2D modeling can be argued quite well, this strategy is insufficient for the comprehensive modeling of heavy plate rolling. The geometry of the heavy plate favors an inhomogeneous distribution of relevant state variables, such as temperature. In addition, if the process involves longitudinal and spreading passes, the required plate rotation spoils the assumption of a symmetric arrangement that might have been acceptable before rotation. Consequently, the derivation of suitably reduced models is not trivial, and modeling tailored to the specific objective of investigation is of utmost importance. Models intended to resolve the evolution of inhomogeneities in the field variables are demanding and computationally expensive. An effective modular modeling strategy was developed for such models to be used offline. Mutually complementing and interchangeable modules may constitute an efficient modeling strategy valid for the specific subject of interest. The presented approach reduces the enormous cost of complete 3D simulation as much as the model purpose allows for.

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Temperature Influence on Section Uniformity of Casting Steel Rolled with the Hot-Core Heavy Reduction Rolling Process and Traditional Hot Rolling Process

Cited by 5 publications

References 30 publications

Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Effects of Deformation Penetration and Recrystallization on the Internal Quality of Casting Ingot

Modular Finite Element Modeling of Heavy Plate Rolling Processes Using Customized Model Reduction Approaches

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