Results 211 to 220 of about 10,103 (260)

Rolling Force in Hot Rolling of Large Rings

Advanced Materials Research, 2011
For hot rolling of large rings, determination of rolling force plays an important role in designing, choosing and optimizing of processing plan and rolling mill. The average shape parameter of the deformation zone of ring rolling is presented, and a reliable coupled thermo-mechanical three-dimensional (3D) finite element (FE) model for the process is ...
Min Wang, Chun Zhang
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ROLLING CONTACT FORCE ENERGY RECONSTRUCTION

Journal of Sound and Vibration, 2000
Abstract Knowledge of the forces at the wheel–rail contact is fundamental to estimate the consequences in terms of noise and vibration. The traditional use of strain gauges mounted on the wheel web and axle is not capable of determining the high-frequency content of the contact force.
A. Bracciali, CASCINI, GAETANO
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The effect of the work-roll bending force on the roll force in a hot-strip mill

Journal of Materials Processing Technology, 1994
Abstract The effect of work-roll bending force on the roll in a hot-strip mill has been investigated to enable the making of a more precise roll-force prediction for the finish mill set-up. The relationship between the applied bending force and the corresponding increase in roll force was obtained from the work-roll bending test under the contact ...
Young-Hoon Moon, Joon-Jeong Yi
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A non‐circular arc roll force model for gold rolling

International Journal for Numerical Methods in Engineering, 1978
AbstractA long established approximation, normally invoked in the development of classical rolling theory, is that the work roll‐strip interface assumes a circular profile. Although valid for a wide range of practical rolling conditions, the approximation is definitely suspect for instance in the last and penultimate stand of a thin sheet tandem mill ...
Grimble, M. J., Fuller, M. A., Bryant, G. F.   +2 more
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The temperature, roll force and roll torque during hot bar rolling

Journal of Materials Processing Technology, 1999
Abstract Low-carbon steel bars, 16 mm square, were rolled in four passes, consisting of a square–diamond–square sequence, to a 10 mm square cross-section. The roll separating forces and the roll torques were determined as a function of the area reduction at entry temperatures of 900, 950, 1000, 1050 and 1100°C.
Ahmed Said, J.G. Lenard, A.R. Ragab, M.Abo Elkhier   +3 more
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An approximate model for predicting roll force in rod rolling

KSME International Journal, 2002
This paper presents a study of the effect of rolling temperature, roll gap (pass height), initial specimen size and steel grades of specimens on the roll force in round-oval-round pass sequence by applying approximate method and verifications through single stand pilot rod rolling tests.
Lee, Y, Kim, HJ, Hwang, SM
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Rolling Force Research on Cogging Rolling of H-Beam

Key Engineering Materials, 2010
Due to the complexity of H-beam’s cross section, it is difficult to calculate the rolling force and force torque accurately using classic formulas conveniently when H-beams of new size are developed. This paper describes an investigation into the reversing process of H-beam using MARC software and compares the results with rolling data from the ...
Qin Qin, Di Ping Wu, Jing Jing Li, Yong Zang   +3 more
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Evaluation of Estimates of Roll Separating Force in Bar Rolling

Journal of Manufacturing Science and Engineering, 2005
A systematic approach is presented to estimate the roll separating force in bar rolling. This force is the product of the contact area between the rolled material and the roll pass, the mean unit pressure on the roll and the average flow stress within the roll gap.
A. R. Ragab, S. N. Samy
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A simplified method to calculate the rolling force in hot rolling

The International Journal of Advanced Manufacturing Technology, 2016
It is well known that there are sharp peaks (friction hills) in the specific roll pressure curves predicted by Sims formula and Цeликoв formula which result in large errors for hot rolling. In this paper, a new specific roll pressure formula is derived from the Navier-Stokes equation (N-S equation) by the hydrodynamics method (HM) with assumptions that
Si Li, Zhigang Wang, Changming Liu, Jinhua Ruan, Zengbing Xu   +4 more
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Analysis of rolling force model in cold rolling mill

Revue de Métallurgie, 2009
A rolling force model of continuous cold rolling mill based on elastic and plastic mechanics was developed and successfully applied in the control system of a 1420 mm cold rolling mill in Baosteel. Considering simplicity and practicability of calculation, stress of elastic zone and plastic zone during the cold rolling process was calculated and ...
Y. Li, Z. Jiang, F. Li
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