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Vil'k, Yu. N.

doi:10.1023/a:1012766412374

Refractories and Industrial Ceramics

2001

DOI: 10.1023/a:1012766412374

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Yu. N. Vil'k

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2013

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Effect of Accumulative Bending Conditions on Grain Refinement on Hot-rolled Sheet

Matsubara¹,

Nakata²,

Hiruta³

2013

ISIJ Int.

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As a technology to manufacture fine-grained steel, accumulative bending process after hot rolling was proposed, and multi-bending equipment of laboratory scale were established. The effects of accumulative bending on microstructure and ferrite grain size by changing the thermo-mechanical conditions were investigated. As the results, a microstructure with the grain size of 2.2 μm was obtained at specimen surface by accumulative bending after hot rolling in the optimized thermal condition. By the results of FE analysis, it was cleared that equivalent strain was accumulated on not only surface but also center of thickness.

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Effect of Accumulative Bending Conditions on Grain Refinement on Hot-rolled Sheet

Matsubara¹,

Nakata²,

Hiruta³

2013

ISIJ Int.

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Thermal Analysis of Strip in Multi-bending Process After Hot Rolling

Nakata¹,

Matsubara²,

Hiruta³

2013

ISIJ Int.

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The thermal histories of steel strips in a multi-bending process after hot rolling were clarified by numerical analysis in order to investigate the appropriate conditions for grain refinement. The temperature oscillates cyclically at the strip surface, whereas the temperature amplitude is relatively small at the center of thickness. The temperature distribution in the strip thickness direction depends on the transfer speed and cooling conditions, that is, air or water cooling. In industrial production, water-cooling equipment would be necessary in order to cancel the accumulated heat generation caused by bending deformation and to maintain the strip temperature in the appropriate range for grain refinement.

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Cited by 2 publications

References 1 publication

Effect of Accumulative Bending Conditions on Grain Refinement on Hot-rolled Sheet

Effect of Accumulative Bending Conditions on Grain Refinement on Hot-rolled Sheet

Thermal Analysis of Strip in Multi-bending Process After Hot Rolling

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