The temperature and stress fields developing in rolls during hot rolling

Fischer, Franz Dieter; Schreiner, W.E; Werner, Ewald; Sun, C. G.

doi:10.1016/j.jmatprotec.2004.02.059

Cited by 24 publications

(7 citation statements)

References 20 publications

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“…10,[20][21][22][23] The temperature field is twodimensional (2D) and a possible Fourier series approximation is given as 20…”

Section: Stationary Temperature Distribution: Analytical Solutionmentioning

confidence: 99%

“…A four-node isoparametric finite element (called PLANE42 in ANSYS) under plain strain condition has been chosen. Apart for border effects, plain strain is a quite reasonable hypothesis to model the mechanical behaviour of very long cylinder (see Fischer et al 23 ). For work roll material, a simple elastic-plastic material model with von Mises plasticity and kinematic hardening rule has been assumed.…”

Section: Mechanical Analysismentioning

confidence: 99%

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On thermal stress and fatigue life evaluation in work rolls of hot rolling mill

Benasciutti

2012

The Journal of Strain Analysis for Engineering Design

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The paper proposes an approach for thermal stress evaluation and fatigue life assessment of work rolls in hot rolling mills. Temperature and thermal stress distributions are calculated with a simplified finite element approach, based on a plane model of work roll loaded on its boundary by rotating thermal actions for a typical hot rolling configuration. A transient of one hour is simulated and the calculated temperature field is next applied as thermal loading in elastic–plastic mechanical simulation, to get thermal stresses and elastic–plastic strains in work roll. Calculated cyclic stresses and strains are finally used to estimate work roll service life, based on Universal Slopes equation that is modified to account for the multiaxial stress state. A comparison of results by three multiaxial fatigue criteria is provided. The obtained results show that, according to such multiaxial criteria, stress multiaxiality would have a great effect on fatigue life, despite it is generally neglected in approaches usually adopted in literature

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“…10,[20][21][22][23] The temperature field is twodimensional (2D) and a possible Fourier series approximation is given as 20…”

Section: Stationary Temperature Distribution: Analytical Solutionmentioning

confidence: 99%

Section: Mechanical Analysismentioning

confidence: 99%

On thermal stress and fatigue life evaluation in work rolls of hot rolling mill

Benasciutti

2012

The Journal of Strain Analysis for Engineering Design

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“…Estimates for h in the higher temperature range (!1000 K) are available for steel, quenched in water, see e.g. [22,23], but can be considered to be also relevant for Ti-Al-alloys, since at high temperatures h is mainly controlled by the quenching liquid and not by the chemistry of the specimen. We take a value of h ¼ 1200 Jm À2 K À1 s À1 and find for R ¼ R s ¼ 2 mm the dimension-free valuehw1=3.…”

Section: The Quenching Processmentioning

confidence: 99%

Can local hot spots induce α2/γ lamellae during incomplete massive transformation of γ-TiAl alloys?

et al. 2010

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“…Recently, Serajzadeh et al [22][23][24] developed a two-dimensional FEM model with work rolls and hot strips to predict the temperature and the thermo-mechanical stress in work rolls during the hot slab rolling process. Fischer et al [25] proposed a solution with a moving heat source to investigate the temperature and the stress near the roll surface. Benasciutti et al [26][27][28] completed a series of studies to estimate the transient temperature, thermal stress and the fatigue life of a work roll using a two-dimensional FEM model even a one-dimensional harmonic FEM model.…”

Section: Introductionmentioning

confidence: 99%

On the Evolution of Temperature and Combined Stress in a Work Roll under Cyclic Thermo-Mechanical Loadings during Hot Strip Rolling and Idling

Shi

Han

et al. 2020

Materials

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An accurate prediction of temperature and stress evolution in work rolls is crucial to assess the service life of the work roll. In this paper, a finite element method (FEM) model with a deformable work roll and a meshed, rigid body considering complex thermal boundary conditions over the roll surface is proposed to assess the temperature and the thermal stress in work rolls during hot rolling and subsequent idling. After that, work rolls affected by the combined action of temperature gradient and rolling pressure are investigated by taking account of the hot strip. The accuracy of the proposed model is verified through comparison with the calculation results obtained from the mathematical model. The results show that thermal stress is dominant in the bite region of work rolls during hot rolling. Afterwards, the heat treatment residual stresses which are related to thermal fatigue are simulated and introduced into the work roll as the initial stress to evaluate the redistribution under the thermal cyclic loads during the hot rolling process. Results show that the residual stress significantly changed near the roll surface.

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The temperature and stress fields developing in rolls during hot rolling

Cited by 24 publications

References 20 publications

On thermal stress and fatigue life evaluation in work rolls of hot rolling mill

On thermal stress and fatigue life evaluation in work rolls of hot rolling mill

Can local hot spots induce α2/γ lamellae during incomplete massive transformation of γ-TiAl alloys?

On the Evolution of Temperature and Combined Stress in a Work Roll under Cyclic Thermo-Mechanical Loadings during Hot Strip Rolling and Idling

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