Numerical and experimental analysis of tube drawing with fixed plug

Neves, Francisco; Button, Sérgio Tonini; Caminaga, Célio; Gentile, F. C.

doi:10.1590/s1678-58782005000400011

Cited by 46 publications

(18 citation statements)

References 8 publications

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“…The same phenomenon is observed with a small angle in the conical zone. It is in accordance with prior results published by Neves [8]. A minimum radius of 4 times the thickness of the initial tube (4X1.25 mm) was applied to reduce the contact pressure of this zone of the drawing die and consequently increasing its lifespan.…”

Section: Optimization Of the Tools Geometrysupporting

confidence: 88%

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Optimization on the cold drawing process of 6063 aluminium tubes

Béland

Fafard

Rahem

et al. 2011

Applied Mathematical Modelling

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a b s t r a c tTo obtain the T832 material behaviour, 6063-T4 tubes need to be cold drawn before artificial aging to enhance their mechanical properties. Since a high area reduction is required, multiple drawing passes are generally necessary to avoid fracture of tubes during the drawing process. These several steps need a time consuming process which could be reduced by optimization. The optimization of the tools geometry has been done through a finite element model with the objective of reducing the maximum stress level to draw tubes in one pass. Based on the optimum design, a new tool was built and acceptable accordance was observed between experiments and numerical results.Crown

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Section: Optimization Of the Tools Geometrysupporting

confidence: 88%

“…Neves [8] found an optimized half-angle range for tube drawing of A304 stainless steel for reducing drawing stresses with three different area reductions. Their result confirmed that effect of friction on the plug is more significant than on the die.…”

Section: Introductionmentioning

confidence: 99%

Optimization on the cold drawing process of 6063 aluminium tubes

Béland

Fafard

Rahem

et al. 2011

Applied Mathematical Modelling

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“…The geometrical parameters considered in the finite element (FE) model are described in Figure 5. The relation between parameters is defined as follows [45][46][47]…”

Section: Numerical Modellingmentioning

confidence: 99%

“…The length of the tube is 100 mm to guarantee that the process reaches a permanent regime. The relation between parameters is defined as follows [45][46][47]:…”

Section: Numerical Modellingmentioning

confidence: 99%

Guidelines for Selecting Plugs Used in Thin-Walled Tube Drawing Processes of Metallic Alloys

Rubio¹,

Camacho²,

Pérez³

et al. 2017

Metals

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Abstract:In this paper, some practical guidelines to select the plug or set of plugs more adequate to carry out drawing processes of thin-walled tubes carried out with fixed conical inner plug are presented. For this purpose, the most relevant input parameters have been considered in this study: the tube material, the most important geometrical parameters of the process (die semiangle, α, and cross-sectional area reduction, r) and the friction conditions (Coulomb friction coefficients, µ 1 , between the die and the tube outer surface, and µ 2 , between the plug and the tube inner surface). Three work-hardening materials are analyzed: the annealed copper UNS C11000, the aluminum UNS A91100, and the stainless steel UNS S34000. The analysis is realized by means of the upper bound method (UBM), modelling the plastic deformation zone by triangular rigid zones (TRZ), under the validated assumption that the process occurs under plane strain conditions. The obtained results allow establishing, for each material, a group of geometrical parameters, friction conditions, a set of plugs that make possible to carry out the process under good conditions, and the optimum plug to carry out the process using the minimum amount of energy. The proposed model is validated by means of an own finite element analysis (FEA) carried out under different conditions and, in addition, by other finite element method (FEM) simulations and real experiments taken from other researchers found in the literature (called literature simulations and literature experimental results, respectively). As a main conclusion, it is possible to affirm that the plug that allows carrying out the process with minimum quantity of energy is cylindrical in most cases.

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“…During this period various aspects of this process evaluated analytically (energy, slab and upper bound methods) and numerically for various materials [8][9][10][11][12][13][14][15][16][17][18].…”

Section: Tube Drawingmentioning

confidence: 99%