Thermal expansion and crown evaluations in rolling processes

Tseng, Ampere A.; Tong, S.X.; Chen, T.C.

doi:10.1016/s0261-3069(96)00061-1

Cited by 13 publications

(9 citation statements)

References 8 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%

“…Some very simplified studies have been attempted in the past, for estimating for example the stationary (long-term) temperature distribution 3 or stresses by a thermo-elasticity analysis. 6,10 A valid alternative to calculate transient temperature and stress distributions has been represented by numerical methods based on finite elements (FE). Different modelling approaches, characterised by various degrees of complexity, have been devised in literature.…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…To demonstrate the accuracy and reliability of the simulation method developed in this study, the numerical results of normalized surface temperature in a typical rolling process under a specific condition (bite angle = 10 • ; cooling angle = 350 • ; Bi = 100; Pe = 10 5 ) are compared with the analytical and finitedifference solutions published previously [14]. It can be seen that a good agreement can be found between them, as shown in Figure 9.…”

Section: Numerical Resultsmentioning

confidence: 84%

“…The roll is subjected to a constant convective heat transfer, h(T − T a ), over the angle θ 0 and to a uniform contact heat transfer cooling, (T -T s )/R c (σ c ), along the remaining surface. The transient temperature of the roll, T (x, y, z; t), can be obtained by solving the energy balance equation given by [12][13][14][15] …”

Section: Thermal Model Of Rollsmentioning

confidence: 99%

“…A 2-D PLANE55 four-node element is adopted in analysis. It should be remem- Analytical results [14] Numerical results [14] Numerical results by finite element method Figure 9 Normalized surface temperature of a rotating roll (Bi = 100, Pe = 10 5 ). bered that the value of Peclet number for each element (Pe E = VL e /α, where V is the corresponding speed of the element; L e is the length of the element) should be small enough to avoid oscillation of numerical results, a phenomenon of numerical instability [16].…”

Section: Thermal Model Of Rollsmentioning

confidence: 99%

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Temperature Distribution of Taper Rolls in Preheating Furnace of Cold Rolling Continuous Annealing Line

Chen

2010

Heat Transfer Engineering

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In this article, three-dimensional (3-D) transient temperature distributions of taper rolls in a continuous annealing line (CAL) are investigated using finite-element analysis. Since the temperature of the strip is closely related to the surface temperature of the rolls due to the effect of contact heat transfer between them, it is crucial to determine the accurate surface temperature distributions of rolls in CAL. It is found that the temperature history of a roll remains identical and exhibits a radial-dependent distribution as the Peclet number of the roll decreases to a suitable small value, corresponding to a low angular speed of the roll. The computational time for the case with low Peclet number, however, can be significantly reduced. Moreover, it is seen that the results of a two-dimensional (2-D) model are in good agreement with those of the 3-D model in the central region covered with the strip, while the computational time of the former is about one-twentieth of the latter.Consequently, a minimum computational cost can be achieved by using 2-D model with a suitable lower value of Peclet number without sacrificing the accuracy of the simulation results.

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Influence of edge thermal spraying on the temperature field and thermal crown of work roll during cold rolling of aluminum alloy strip

Wang

Wei-dong

2023

Int J Adv Manuf Technol

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Thermal expansion and crown evaluations in rolling processes

Cited by 13 publications

References 8 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

Temperature Distribution of Taper Rolls in Preheating Furnace of Cold Rolling Continuous Annealing Line

Influence of edge thermal spraying on the temperature field and thermal crown of work roll during cold rolling of aluminum alloy strip

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