Edger Set-up Model at Roughing Train in Hot Strip Mill

Shibahara, T.; Misaka, Yoshisuke; Kono, Teruo; Koriki, Mitsuru; Takemoto, Hiroshi

doi:10.2355/tetsutohagane1955.67.15_2509

Cited by 36 publications

(21 citation statements)

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“…13 and 14. The predicted dog-bone shape also agrees favorably with the Shihabara's experiment, 3) as shown in Fig. 15, indicating the validity of either the present model or FEM.…”

Section: Resultssupporting

confidence: 80%

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A New Model for the Prediction of the Dog-bone Shape in Steel Mills

et al. 2012

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Precision control of the width of slabs, plates and strips, is vital for product quality and production economy in steel mills. A common practice in the production line is to perform vertical rolling and reduce the width in the roughing mill. However, the formation of so called 'dog-bone' at the edge of the slab would affect the final width after horizontal rolling that follows. Therefore, it is essential to predict and control the dog-bone shape. In this paper we present a new model for the prediction of the dog-bone shape during vertical rolling in roughing mills. The model is developed on the basis of the minimum energy principle for a rigid-plastic material and a three-dimensional admissible velocity field. The predictions accuracy of the proposed model is examined via comparison with predictions from finite element simulation and also with experimental data.KEY WORDS: vertical rolling; finite element method; dog-bone shape; minimum energy principle; admissible velocity field.

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“…13 and 14. The predicted dog-bone shape also agrees favorably with the Shihabara's experiment, 3) as shown in Fig. 15, indicating the validity of either the present model or FEM.…”

Section: Resultssupporting

confidence: 80%

“…[1][2][3][4][5] Tazoe,1) et al derived a mathematical formula based on the experimental data obtained by Shibahara, et al 3) Later, it was modified by Ginzburg.…”

Section: Introductionmentioning

confidence: 99%

A New Model for the Prediction of the Dog-bone Shape in Steel Mills

et al. 2012

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“…Yun et al [7] established an abstract mathematical model of the dog-bone shape (including many undetermined parameters), and the parameters of dogbone shape and rolling force are received by fitting some finite element method (FEM) simulation's data. He verified the parameters accuracy through FEM simulation and experimental data obtained by Shibahara et al [2]. However, the explicit mathematical expression of shape is not obtained.…”

Section: Introductionmentioning

confidence: 91%

“…The dog-bone shape was studied by many researchers in the past [2][3][4][5][6][7], but relatively few theoretical studies. The experience formula to describe dog-bone characteristic parameters was first proposed by Okado et al [3].…”

Section: Introductionmentioning

confidence: 99%

Analysis of vertical rolling using double parabolic model and stream function velocity field

Liu

Zhang

Zhao

et al. 2015

Int J Adv Manuf Technol

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Vertical rolling has been widely used in the roughing stand of hot strip rolling to improve the precision of slab width which influences the finished product quality significantly in actual production. Double parabolic dogbone function model and corresponding velocity and strain r a t e f i e l d s a r e f i r s t l y p r o p os e d b a s e d o n t h e incompressibility condition and stream function. They are successfully applied to three-dimensional vertical rolling. Using the first variation principle of rigid-plastic material, an analytical solution of slab total power functional in vertical rolling is obtained. Then, the shape parameters and the rolling force are received by minimizing the power functional. The error of shape and power parameters is within 4 % compared with finite element method (FEM) simulation's result and less than 9.5 % compared with other models' result.

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“…A number of researchers like Wusatowski [1], Shibahara et al [2], El-Kalay and Sparling [3], Okado [4], and Helmi and alexander [5] have proposed experimental relations for calculating maximum bulging height of bar edges in edging process using flat cylindrical rollers.…”

Section: Edging Process Using Flat Cylindrical Rollersmentioning

confidence: 99%