The Influence of the Dies Geometry on the Drawing Force for Steel Wires

Tintelecan, Marius; Sas-Boca, Ioana Monica; Iluţiu-Varvara, Dana-Adriana

doi:10.1016/j.proeng.2017.02.369

Cited by 27 publications

(12 citation statements)

References 2 publications

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“…The die 1450 reaches the vicinity of the hydrodynamic lubrication due to its higher drag (2β = 14 • ) and maintenance (Hc = 50% D f ) of lubricant in the wire/die interface. This results are in agreements with those obtained by Tintelecan [33] who found that the lowest values of force and, consequently, of friction coefficient are obtained for die angles ranging between 12 • and 15 • and for a length of the bearing zone Hc equal to~40% of the Df. Furthermore, according to Suliga [22], the selection of the appropriate die geometry in the process of drawing at high speeds is likely to find more favourable lubrication conditions.…”

Section: Resultssupporting

confidence: 93%

Effect of Process Parameters in Copper-Wire Drawing

Martínez

Qian

Kabayama

et al. 2020

Metals

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The efforts to increase the operating speed of the wire drawing process play a crucial role regarding the industrial productivity. The problem is closely related to various features such as heat generation, material plastic deformation, as well as the friction at the wire/die interface. For instance, the introduction of specific lubricants at the interface between the die and the wire may efficiently reduce the friction or in another context, induce a difference in friction among different regimes, as for the case of hydrodynamic lubrication. The present study systematically explores various aspects concerning the drawing process of an electrolytic tough pitch copper wire. To be specific, the drawing speed, drawing force, die temperature, lubricant temperature, and stress distributions are analysed by using experimental as well as numerical approaches. The obtained results demonstrate how the drawing stress and temperature are affected by the variation of the friction coefficient, die geometry, and drawing speed. It is argued that such a study might help in optimizing the operational parameters of the wire drawing process, which further leads to the improvement of the lubrication conditions and product quality while minimizing the energy consumption during the process.

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Section: Resultssupporting

confidence: 93%

Effect of Process Parameters in Copper-Wire Drawing

Martínez

Qian

Kabayama

et al. 2020

Metals

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“…Previous studies on wire drawing have reported the improvement of the drawing quality by selecting the appropriate die geometry (Figure 1). The influence of the reduction zone as well as the bearing zone is known to significantly affect the drawing force, spatial profile of the radial stress, residual stress behavior, and properties of the resultant wire [4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Influences of Different Die Bearing Geometries on the Wire-Drawing Process

Martínez

Santos

Kabayama

et al. 2019

Metals

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Metalworking is an essential process for the manufacture of machinery and equipment components. The design of the die geometry is an essential aspect of metalworking, and directly affects the resultant product’s quality and cost. As a matter of fact, a comprehensive understanding of the die bearing geometry plays a vital role in the die design process. For the specific case of wire drawing, however, few efforts have been dedicated to the study of the geometry of the bearing zone. In this regard, the present paper involves an attempt to investigate the effects of different geometries of the die bearing. For different forms of reduction as well as bearing zones, measurements are carried out for the wire-drawing process. Subsequently, by extracting the friction coefficients from the electrolytic tough pitch copper wire in cold-drawn essays, the numerical simulations are also implemented. We present the results on both the superficial and center radial tensions obtained by finite element methods. It is observed that the reduction of the friction coefficient leads to an increase in radial stress, while for a given friction coefficient, the substitution of the C-type die by the R-type one results in a decrease in the superficial radial stress of up to 93.27%, but an increase at the center of the material. Moreover, the die angle is found to play a less significant role in the resultant center radial stress, but it significantly affects the superficial radial stress. Lastly, R-type dies result in smaller superficial radial stress, with a change of up to 34.48%, but a slightly larger center radial stress up to 6.55% for different die angles. The implications of the present findings are discussed.

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“…The products are widely used in different industry sectors, such as construction, electrical, chemical, and automotive [4][5][6][7]. Papers [8][9][10][11] have pointed out the importance and influence of some wire drawing process parameters, including the reduction ratio, die angle, drawing speed, and friction.…”

Section: Introductionmentioning

confidence: 99%

Determining the Drawing Force in a Wire Drawing Process Considering an Arbitrary Hardening Law

2022

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The present paper considers the wire drawing process through a conical die and provides an approximate solution for the drawing force, assuming an arbitrary hardening law. The solution is based on the upper bound theorem. However, this theorem does not apply to the stationary flow of strain-hardening materials. Therefore, an adopted engineering approach is to replace the original material model with a non-homogeneous, perfectly plastic model. The kinematically admissible velocity field is derived from an exact semi-analytical solution for the flow through an infinite channel, which increases the accuracy of the solution. The solution for the homogeneous perfectly plastic material compares with an available solution. The general solution is valid for any die angle. The numerical example focuses on the range of angles used in wire drawing. Since the material model is pressure-independent, it is straightforward to adopt the solution for calculating the force in extrusion.

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The Influence of the Dies Geometry on the Drawing Force for Steel Wires

Cited by 27 publications

References 2 publications

Effect of Process Parameters in Copper-Wire Drawing

Effect of Process Parameters in Copper-Wire Drawing

Influences of Different Die Bearing Geometries on the Wire-Drawing Process

Determining the Drawing Force in a Wire Drawing Process Considering an Arbitrary Hardening Law

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