From TRB and LP Plate to Variable Gauge Rolling: Technology, Theory, Simulation and Experiment

Liu, Xiang Hua; Wu, Zhi Qiang; Fang, Zhi Yuan; Zhang, Guang Ji; Yong, Zhi

doi:10.4028/www.scientific.net/msf.706-709.1448

Cited by 18 publications

(7 citation statements)

References 4 publications

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“…Figure 7a-e shows the predicted changes of total percent elongation with ELR at thickness ratios less than 0.5 using Eqs. (4) and (5). As it can be seen, the ELR critical value increases with increasing thickness ratio.…”

Section: Methodsmentioning

confidence: 75%

“…In addition, Zhang et al [4] developed a differential equation to predict rolling force during variable gauge rolling using slab method analysis. Liu et al [5] presented a kinematically admissible velocity field to analyze forward slip during different stages of variable gauge rolling. Zhang et al [6] utilized linear Lagrangian interpolation method to estimate the mechanical properties of TTZ at each point.…”

Section: Introductionmentioning

confidence: 99%

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Tensile behavior of tailor rolled blanks: mathematical modeling and design optimization

2018

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In this study, a mathematical model considering geometrical characteristics of thickness transition zone (TTZ) has been developed to predict tensile behavior of tailor rolled blanks (TRBs). To prove the accuracy of the presented model, uniaxial tension tests were carried out using tensile specimens fabricated from TRBs with different TTZ geometries (thickness ratio varies between 0.47 and 0.89 and length of TTZ changes from 58 to 110 mm). The error analysis showed that the predicted results correlate well with the ones obtained from uniaxial tension tests. In addition, utilizing the presented model, a new mathematical relation was proposed to obtain the optimized design for TTZ at each thickness ratio. Accordingly, for thickness ratios below 0.5, it is anticipated that total percent elongation of TRBs increases up to a maximum point with increasing effective length ratio (ELR), characterized by a critical ELR parameter. However, for thickness ratios above 0.5, the elongation-ELR curves may display a full ascending trend with no peak point within 0 < ELR ≤ 0.5. The reasons behind these variations were fully discussed.

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Section: Methodsmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Tensile behavior of tailor rolled blanks: mathematical modeling and design optimization

2018

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“…As shown, due to the occurrence of a DRF, the maximum needed rolling force exceeds the required rolling force needed to obtain the section with maximum absolute thickness reduction (thinner side). Liu et al [15] reported that this DRF is solely attributed to forward slip.…”

Section: Resultsmentioning

confidence: 93%

“…Zhang et al [14] presented a solution for the differential equations of force equilibrium for both upward and downward steps of VGR to predict the required rolling force. Liu et al [15] presented a kinematically admissible velocity field to analyze forward slip during different stages of variable gauge rolling. In both of these studies, the effects of friction coefficient, roll diameter and absolute thickness reduction on variations of rolling force during VGR were not studied.…”

Section: Introductionmentioning

confidence: 99%

Effects of Deformation Conditions on the Rolling Force during Variable Gauge Rolling

Shafiei

Dehghani

2018

JMMP

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In this study, effects of different deformation conditions on the rolling force were studied during variable gauge rolling processes. To this end, variations of rolling forces with rolling times were analyzed at different roll diameters, absolute thickness reductions and friction coefficients. Considering the rolling force variations, an abrupt change in the outlet section of downward and outward rolling was observed at all deformation conditions. The experimental data, along with the results obtained from finite element method (FEM) simulations, revealed that this drop in the rolling force (DRF) is strongly dependent on the deformation conditions. It was found that the DRF value increases with increasing absolute thickness reduction, roll diameter and friction coefficient. Furthermore, dependency of contact length on the roll radius and wedge angle (slope of the thickness transition zone) was investigated. Accordingly, it was concluded that the variations of the DRF value can be mainly attributed to the changes in the contact length during variable gauge rolling. Moreover, slab method analysis was used to model the effects of deformation conditions on DRF.

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“…However, the rolling process, similar to the third method, has made significant progress in fabricating LVP strips in recent years. [45][46][47] Du et al [48][49][50] proposed a vibration TRC process, as shown in Fig. 8(a).…”

Section: Longitudinal Variable Profiled Stripmentioning

confidence: 99%

A Review of the Twin-roll Casting Process for Complex Section Products

Huang

2020

ISIJ Int.

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Complex section products have significant lightweight and functional characteristics, and the twin-roll casting (TRC) is characterized by high efficiency and short flow. Hence, the TRC process for fabricating complex section products combines both advantages and will have a broader market demand and application prospect. In this paper, the research progress in recent years is reviewed, and novel TRC processes are divided into three categories according to the product section characteristics, namely transverse variable profiled strip, longitudinal variable profiled strip, and circular section products. The essence of the TRC process of complex section products is to change the steady-state characteristics in time series and the uniform characteristics in spatial distribution into transient or nonuniform. The technical principle, deformation characteristics, influence mechanism, are systematically analyzed. The current challenges and future directions of the TRC process are discussed.

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From TRB and LP Plate to Variable Gauge Rolling: Technology, Theory, Simulation and Experiment

Cited by 18 publications

References 4 publications

Tensile behavior of tailor rolled blanks: mathematical modeling and design optimization

Tensile behavior of tailor rolled blanks: mathematical modeling and design optimization

Effects of Deformation Conditions on the Rolling Force during Variable Gauge Rolling

A Review of the Twin-roll Casting Process for Complex Section Products

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