Analysis and prediction of fishtail during V-H hot rolling process

Xu, Liming; Wang, Hongyu; Ding, Jingguo; Xu, Jianchun; Zhang, Dianhua

doi:10.1007/s11771-015-2632-5

Cited by 25 publications

(6 citation statements)

References 10 publications

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“…The defected length of the sandwich rolling can be obtained as the difference between the two distances. Li et al [12] also proposed the defected length during the hot rolling. This defected length will be important to the sandwich sheet shearing position; making an accurate prediction of this length will increase the yield and reduce the waste of materials.…”

Section: Bonded Sheetsmentioning

confidence: 99%

Analysis of unbonded sandwich rolling defected length of the head based on experiments with aluminum and copper

Wang

Sun

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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In this paper, sandwich rolling with symmetrical thickness and materials is intensively studied. The inner metal is out of touch with both upper and lower rolls in the sandwich sheets, and all the forces are delivered from upper and lower sheets. This special character makes the relative slip distance and elongation distance appear. Then, the defected length is formed during the sandwich rolling. It verifies that the point where both inner and outer metals have the same velocity is also the point where the two metals are both deformed. Slab method is first applied in predicting the defected length of the sandwich sheets. Sandwich rolling experiments with aluminum and copper are conducted. The results obtained in this paper are also compared with those measured in experiments and calculated by stream function model recorded in references. So the model can be used in the real work conditions. It is helpful to find the best shearing position in the head of the sandwich sheets. The cost of materials is reduced based on the present model. When sheets are rolled in continual rolling passes, the defected length can be more important and serious. Specifically, if the sheets are wide, expensive and multilayer, the shearing position can be more significant to the industrial application.

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Section: Bonded Sheetsmentioning

confidence: 99%

Analysis of unbonded sandwich rolling defected length of the head based on experiments with aluminum and copper

Wang

Sun

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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“…So the solution of Figure 4(b) can be seen as a creative method which can be applied in multi-metal bonding process. It was recorded in the study about asymmetrical rolling with clad sheet by Wang et al 15 and Li et al 16 Rolling forces are also received based on equations (24) and (26)…”

Section: Modelingmentioning

confidence: 99%

Analysis of ultra-heavy plate rolling force based on thickness temperature gradient elements and experiment simulations

Ding

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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The thickness of the plate in temperature gradient rolling is first divided into 2 m elements, and m is an undetermined parameter which can be limited. Based on these thickness elements with different temperatures, the rolling force of this advanced process is first analyzed with slab method. Also the predictions of thickness ratio with different temperatures and reductions of each thickness elements are proposed in this paper. The results measured after rolling experiments are used to compare with these calculated by this model in order to verify its accuracy. In the experiment, a multi-metals riveting plate in the same temperature is designed to simulate a single metal one in gradient temperatures based on the thickness elements. Since the model is based on an analytical method which is strongly supported by the rolling theories, it can be applied in real gradient temperature rolling for ultra-heavy plate.

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“…Xiong et al [ 17 ] conducted the coupled thermal–mechanical analysis to calculate the shape, width spreading, and temperature variation of a vertical‐flat rolled slab. Li et al [ 18 ] used the ANSYS/LS‐DYNA to investigate the fishtail of a slab during the vertical–horizontal hot rolling process and revealed the variation in fishtail. Using the ABAQUS, Jiao et al [ 19 ] defined the variation laws of the dog‐bone profile, the fishtail of the head, and tail and edge indentation.…”

Section: Introductionmentioning

confidence: 99%

Application of Finite‐Element Simulation and Neural Networks in the Prediction of Metal Flow Behavior during the Sizing Press Process

Wen

Chen

et al. 2022

steel research int.

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A dog‐bone profile is developed by inhomogeneous deformation of a slab, whose parameters can be used to describe the metal flow rule during the width reduction process by a sizing press. The accuracy of a dog‐bone profile is essential to ensure the high width precision of the roughing process. However, the existing equipment cannot satisfy the requirements of online measurement. To solve this problem, herein, a prediction model for dog‐bone parameters based on the finite‐element simulation and a neural network is presented. The finite‐element simulation can reproduce the field production process, revealing variations in the dog‐bone profile parameters. In addition, based on the simulation data, a neural network model is constructed to predict the dog‐profile parameters. By adjusting the hyperparameters, the prediction accuracy of the constructed deep neural network model with two hidden layers is improved. For the dog‐bone profile parameters, the mean squared error is less than 3 mm, the mean absolute percentage error is less than 2%, the maximum absolute percentage error is less than 9%, and the root mean squared error is less than 4 mm. Thus, an accurate prediction of the dog‐bone profile parameters is achieved, which can guide subsequent high‐precision width control.

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Analysis and prediction of fishtail during V-H hot rolling process

Cited by 25 publications

References 10 publications

Analysis of unbonded sandwich rolling defected length of the head based on experiments with aluminum and copper

Analysis of unbonded sandwich rolling defected length of the head based on experiments with aluminum and copper

Analysis of ultra-heavy plate rolling force based on thickness temperature gradient elements and experiment simulations

Application of Finite‐Element Simulation and Neural Networks in the Prediction of Metal Flow Behavior during the Sizing Press Process

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