Theoretical and Numerical Investigation of Required Torque in ECAP-Conform Process

Nosrati, Hasan Ghaforian; Khalili, Khalil; Gerdooei, Mahdi

doi:10.1007/s11663-020-01797-w

Cited by 7 publications

(1 citation statement)

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“…The hardness and tensile test results showed that the microstructure of samples had inhomogeneity, which was a consequence of the significant strain differences applied in the upper and bottom of the aluminum wire. Required torque in the ECAP-Conform process was investigated by Gerdooei et al [18], theoretically and numerically. They calculated the torque of the ECAP-Conform process by using the energy balance and the upper-bound methods.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the effective parameters and optimal design in ECAP-Conform process of commercially pure titanium using statistical and numerical approaches

2022

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The Equal Channel Angular Pressing-Conform (ECAP-Conform) process has improved the mechanical and functional properties of materials as well as resolves the disadvantages of conventional ECAP. The main goal of this study was investigation of the variable in ECAP-Conform process of pure titanium Grade 2. The design of experiments with full factorial technique was implemented in conjunction with finite element numerical simulation.The equivalent plastic strain, required torque, applied force on the ECAP die, and the warping radius of the product were measured and results were interpreted using analysis of variance. It was found that the ECAP die angles and the rod bending angle have the highest effect on both imposed strain and required torque. Also, the rod bending angle and the rod-die friction had no significant effect on the warping radius. The optimal values were specified for minimizing the required torque, reaction force, and warping radius, and maximizing the imposed strain. Based on the optimal estimated parameters, the minimum values of torque, force, warping radius, and maximum value of equivalent strain were predicted to 8.4 kN.m, 42 kN, 0.36 m, and 1.7, respectively. Also, the response optimizer obtained the results with less than 8% error in comparison with numerical simulation.

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Section: Introductionmentioning

confidence: 99%