A new shape change quantification method for estimation of power in shape rolling

Behzadipour, Saeed; Khajepour, Amir; Lenard, John; Biglou, Jalal

doi:10.1016/j.jmatprotec.2004.02.047

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…The high rolling force could cause rolling defects, such as laps and flash fins. Behzadipour et al [2] proposed a power consumption estimation method for the flat-and the shape-rolling processes. The power consumptions obtained by empirical equations were used to build an ANN model.…”

Section: Introductionmentioning

confidence: 99%

High-Order Groove-Shape Curve Roll Design for Aluminum Alloy 7075 Wire Rolling

Sheu¹,

Ho²,

Yu³

et al. 2022

Metals

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A Bézier curve groove-shape roll design method was proposed and compared to round-oval-round designs for the wire rolling process. CAE simulations were adopted to predict the rolling forces and torques required for the rolling process. The rolling torque required for the case of 28% vertical compression rate is 73% higher than the case of 12% compression rate. The curve fittings of the rolling torque and the compression force with respect to the compression rate were obtained with very high R-square values (0.99 and 0.98) in the first rolling pass. The rolling force required for the Bézier curve groove-shape design is no different compared to the oval design with the same compression rate, but the rolling torque requirement for the next rolling station is 6% less than the oval groove design. Furthermore, the equivalent strain distribution on the cross section of the product was uniform, and no fin flash defects occurred. The proposed Bézier curve groove-shape is a better design from the viewpoint of uniform product mechanical property requirement, and a larger compression rate per pass could be achieved.

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Section: Introductionmentioning

confidence: 99%

High-Order Groove-Shape Curve Roll Design for Aluminum Alloy 7075 Wire Rolling

Sheu¹,

Ho²,

Yu³

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

“…Deformed shape, stress and temperature distributions in the workpiece, and forming loads were investigated. Behzadipour et al (2004) introduced a neural networkbased model to estimate power in flat, and shape, rolling. The model used experimental and analytical data from flat rolling for training the network and introduced a shape change quantification factor to enable application to shape rolling.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional analysis of shape rolling using a generalized upper bound approach

Abrinia

Fazlirad²

2009

Journal of Materials Processing Technology

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Shape rollingUpper bound Roll pass Velocity field Shaped sections a b s t r a c t A generalized analytical method has been proposed to study external shape and calculate pressure and torque for the process of rolling shaped sections. The proposed method is based on the upper bound analysis. To determine kinematically admissible velocity fields, flow lines have been mathematically formulated using the parameterization of curves. Based on the calculated velocity fields, an upper bound has been found on rolling power. The calculated power has been minimized with respect to unknown variables to yield the value closest to the actual power required.The proposed general method has been applied to certain rolling passes including squareto-oval and round-to-oval. Velocity fields and power relations have been obtained for each process. Computer analysis has been carried out for all the mentioned passes using dimensions and conditions from experiments conducted by other workers. External shape, average roll torque and average rolling pressure results from the analysis have been compared with analytical solutions, numerical analyses and experimental data presented by other workers.It was concluded that the present method gave very good results and was quicker and easier to use.

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Investigation of Single Pass Shape Rolling Using an Upper Bound Method

Abrinia

Fazlirad

2009

J. of Materi Eng and Perform

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This paper presents a generalized analytical upper bound method for the study of external shape, pressure, and torque in the single pass rolling of shaped sections. Generalized kinematically admissible velocity fields have been calculated from an assumed deforming geometry, in turn mathematically developed from a new parameterization of curves for the stream line flow of the material. An upper bound on rolling power was established based on the calculated velocity fields. Unknown variables in the velocity field were determined by minimizing rolling power with respect to unknown velocity field variables, yielding an upper limit to the actual power required as well as rolling pressure and torque. As an applied example, the single oval-toround and rectangle-to-diamond roll passes have been chosen and analyzed. Velocity fields and power relations were obtained for each pass and computer analysis was carried out to analyze and simulate the process of shape rolling. External shape, average roll torque, and rolling pressure data from the analysis were compared with other workerÕs analytical solutions, numerical analyses, and experimental data. The results were found to be in good agreement with previous research and the method was shown to be quicker and easier to use.

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A new shape change quantification method for estimation of power in shape rolling

Cited by 5 publications

References 18 publications

High-Order Groove-Shape Curve Roll Design for Aluminum Alloy 7075 Wire Rolling

High-Order Groove-Shape Curve Roll Design for Aluminum Alloy 7075 Wire Rolling

Three-dimensional analysis of shape rolling using a generalized upper bound approach

Investigation of Single Pass Shape Rolling Using an Upper Bound Method

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