Multi-objective optimization framework for five-pass wire-drawing process

Wang, Jen Hung; Lo, Yu Lung; Wang, Hung-Yu; Tran, Hong Chuong

doi:10.1007/s00170-020-05226-9

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…Thus, low values of diffusivity (D = 10 -12 m 2 /s, [30]) are obtained at room temperature for heavily drawn wires with a high density of microstructural defects. In this way, for a hot-rolled bar, the hydrogen diffusivity is estimated as D (0) = 6.6 × 10 −11 m 2 /s [48] and, for a prestressing steel wire, it is estimated as D (6) = 4.99 × 10 −12 m 2 /s [30]. The numerical simulation of hydrogen diffusion assisted by stress and strain allows for one to obtain the hydrogen distributions for a long exposure time (Figure 8).…”

Section: Hydrogen Distributionsmentioning

confidence: 99%

“…This reduction causes a non-uniform plastic strain field and, as a consequence, residual stresses are generated in the material [2,3]. Commonly, in the cold-drawn industry, wire-drawing is divided into several steps (called multi-pass drawing), applying different wire diameter reductions [4][5][6][7][8][9]. Thus, the resulting manufacturing-induced residual stress and strain are different depending on the straining path applied in the drawing chain.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the Straining Path during Cold Drawing on the Hydrogen Embrittlement of Prestressing Steel Wires

Toribio

Lorenzo

2023

Metals

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Cold drawing is a commonly used technique for manufacturing the prestressing steel wires used as structural elements in prestressed concrete structures. As a result of this manufacturing process, a non-uniform plastic strain and residual stress states are generated in the wire. These stress and strain fields play a relevant role as the main cause of the in-service failure of prestressing steel wires in the presence of an aggressive environment, hydrogen embrittlement (HE). In this paper, hydrogen susceptibility to HE is compared in two different commercial cold-drawn wires with the same dimensions at the beginning and at the end of manufacturing that follow different straining paths. To achieve this goal, numerical simulation with the finite element (FE) method is carried out for two different industrial cold-drawing chains. Later, the HE susceptibility of both prestressing steel wires was estimated in terms of the hydrogen accumulation given by FE numerical simulations of hydrogen diffusion assisted by stress and strain states, considering the previously obtained residual stress and plastic strain fields generated after each wire-drawing process. According to the obtained results, the hardening history modifies the residual stress and strain states in the wires, affecting their behavior in hydrogen environments.

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Section: Hydrogen Distributionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of the Straining Path during Cold Drawing on the Hydrogen Embrittlement of Prestressing Steel Wires

Toribio

Lorenzo

2023

Metals

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“…Many researchers have examined the optimum conditions for drawing wire for different factors such as angles of die, reduction, lubricant, and heat treatment. Jen-wang et Al [7] have proposed an integrated numerical framework consisting of the robust Taguchi design method, a neural network, and a genetic algorithm for determining the values of the reduction angle, bearing length, and back tension for the ve-pass wire drawing process. Massé et Al [8] performed an optimization on a single drawing pass to deduce an optimal die angle to minimize drawing force and damage using the Latham-Cockcroft damage criterion (Cockcroft and Latham, 1968).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis and optimization of the effects of incremental strain rate in the wire drawing process

Badi,

Bensaada,

Tala-Ighil

et al. 2024

Preprint

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This work deals with a numerical analysis of the effect of incremental strain rate (cumulative strain) in the drawing process of AA-6005 aluminum alloy wire. A finite element method and optimization procedure using a simplex algorithm were used to optimize the dies geometry of all ranges. For this, a 95% total strain rate was realized in three configurations ranges of wire drawing process. This ranges are extracted by the optimization procedure, a decreasing strain rate for an initial value of 35%, a constant strain rate of 24.67% and an increasing strain rate for an initial value of 12%, were imposed respectively. The analysis results (principal stresses, damages distribution, residual hydrostatic pressure, plastic power,...) are used to predict the drawing force, axial surface stress and die stress to be adjusted to ensure improved quality of the drawing process. The cuppy wire and stress concentrations causing central burst (chevron) formation and fractures were predicted during the simulation. For this, different die diameters were used in the analysis. This analysis was performed on the Forge®NxT3 finite element code and validated with the wire drawing test results of the literature.

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Applying machine learning and GA for process parameter optimization in car steering wheel manufacturing

Wang

Chen

Hsu³

2022

Int J Adv Manuf Technol

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Multi-objective optimization framework for five-pass wire-drawing process

Cited by 6 publications

References 20 publications

Influence of the Straining Path during Cold Drawing on the Hydrogen Embrittlement of Prestressing Steel Wires

Influence of the Straining Path during Cold Drawing on the Hydrogen Embrittlement of Prestressing Steel Wires

Numerical analysis and optimization of the effects of incremental strain rate in the wire drawing process

Applying machine learning and GA for process parameter optimization in car steering wheel manufacturing

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