The influence of the drawing parameters and temperature rise on the prediction of chevron crack formation in wire drawing

Haddi, Abdelkader; Imad, A.; Vega, Guillaume

doi:10.1007/s10704-012-9739-6

Cited by 17 publications

(10 citation statements)

References 25 publications

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“…Thus despite the use of lubrication, temperature rise due to lubricant loss as observed by Vega et al [24] has an effect on chevron crack formation according to Haddi et al [10]. What remains to be investigated in this area is the cause for lubricant loss and whether the die design geometry does have an effect on lubricant loss.…”

Section: Heat Generation In the Die-wire Zonesmentioning

confidence: 99%

“…Haddi et al [10] researched on the influence of drawing parameters and temperature rise on chevron crack formation in ETP copper wire drawing as shown in Figure 11. The results showed that the damage zone sig nificantly increases as the friction coefficient increases, resulting in a more inhomogeneous deformation across the wire.…”

Section: Heat Generation In the Die-wire Zonesmentioning

confidence: 99%

“…Effect of friction coefficient and temperature on chevron crack formation[10] Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 6/13/15 7:28 AM…”

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confidence: 99%

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Aspects of Die Geometry Influencing Drawability of Metals During Wire Drawing: A Literature Review

Banda

Siaminwe

Mwenda

2014

Journal for Manufacturing Science and Production

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Drawn metal wires such as copper cables, alu minium wires and steel wires have found several applica tions which have an impact on the domestic and commer cial economic uses, namely power cables, welding cables, wire ropes, wire meshes, electrode and filler wire, etc. All these applications require the use of good quality wires. However, this is not easily achieved since wire production faces many challenges. The influence of the drawing die on drawability and the need to maintain the required quality characteristics of the wire stand out among these challenges. This paper gives a background to wire draw ing by highlighting the challenges of attaining the re quired drawability and quality characteristics during wire drawing. It was found from the literature that the draw die geometry has the greatest influence on the quality of copper, aluminium and steel wire products.

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Section: Heat Generation In the Die-wire Zonesmentioning

confidence: 99%

Section: Heat Generation In the Die-wire Zonesmentioning

confidence: 99%

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Aspects of Die Geometry Influencing Drawability of Metals During Wire Drawing: A Literature Review

Banda

Siaminwe

Mwenda

2014

Journal for Manufacturing Science and Production

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“…(1) Cockcroft-Latham fracture criterion (Cockcroft and Latham, 1968;Haddi et al, 2012) The criterion assumed that the maximum principal stress is the most relevant in the initiation of fracture. The criterion is defined in terms of traction plastic work associated with the principal stress along the path of the equivalent plastic strain, as shown in equation ( 7)…”

Section: Fracturementioning

confidence: 99%

Tensile fracture of ultrafine grained aluminum 6061 sheets by asymmetric cryorolling for microforming

Tieu

Lü

et al. 2014

International Journal of Damage Mechanics

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Tensile fracture of ultrafine grained aluminum 6061 sheets by asymmetric cryorolling for microforming AbstractThe size effect on the mechanism of fracture in ultrafine grained sheets is an unsolved problem in microforming. This paper describes a tensile test carried out to study the fracture behavior and the shear fracture angles of both rolled and aged ultrafine grained aluminum 6061 sheets produced by asymmetric cryorolling. A scanning electron microscope was used to observe the fracture surface. The finite element method was used to simulate the tensile test using the uncoupled Cockcroft-Latham and Tresca criteria and the coupled Gurson-Tvergaard-Needleman damage criterion. It was found that the shear fracture angle decreases gradually from 90 degrees to 64 degrees with an increasing number of passes. The results of simulations using the Gurson-Tvergaard-Needleman criterion show trends similar to the experimental ones. The paper also presents a discussion on the fracture mechanism and the size effect during the tensile test. Yu, H., Tieu, K., Lu, C., Lou, Y., Liu, X., Godbole, A. and Kong, C. (2014) AbstractThe size effect on the mechanism of fracture in ultrafine grained sheets is an unsolved problem in microforming. This paper describes a tensile test carried out to study the fracture behavior and the shear fracture angles of both rolled and aged ultrafine grained Aluminum 6061 sheets produced by asymmetric cryorolling. A Scanning Electron Microscope (SEM) was used to observe the fracture surface. The finite element method was used to simulate the tensile test using the uncoupled Cockcroft-Latham and Tresca criteria and the coupled Gurson-Tvergaard-Needleman (GTN) damage criterion. It was found that the shear fracture angle decreases gradually from 90º to 64º with an increasing number of passes. The results of simulations using the GTN criterion show trends similar to the experimental ones. The paper also presents a discussion on the fracture mechanism and the size effect during the tensile test.

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“…The second issue is to reduce the strain inhomogeneity of the wire along the radial direction during the drawing process [5,6]. The third is to decrease the occurrence of fracture rate, surface defects, and central bursts [7][8][9]. The fourth issue is to increase the die life [10,11].…”

Section: Introductionmentioning

confidence: 99%

Impact of Die Radius in a Streamlined Die during Wire Drawing

Hwang

2021

Applied Sciences

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The effects of die radius in a streamlined die on design factors, such as the distribution of strain, stress, temperature, damage, and drawing force of a wire, were investigated during wire drawing for a better understanding of streamlined die and improvement in drawing quality of the wire. A numerical simulation was performed with the die radius of the streamlined die. The behavior of the design factors of the drawn wire fabricated by the streamlined die was different from that of the conventional die and was highly dependent on the die radius. The different behaviors of the design factors with the die radius can be explained by the frictional work and redundant work of the wire with die angle. The temperature rise and drawing force were high at a greater die radius because of the great frictional stress and heating effect stemming from the high contact length of the wire and die. Meanwhile, the higher redundant work at the surface area with decreasing die radius led to higher strain inhomogeneity, effective stress, damage value, temperature rise, and drawing force due to the abrupt change in the metal flow of the wire stemming from the high die angle. After the optimization of several design factors with die radius, it was concluded that the optimum IDR values ranged from 0.14 to 0.18, indicating that a streamlined die with a radius of 70 to 90 mm was the most suitable in the present process condition. In particular, the damage value of the wire was reduced in this range of die radii compared to the conventional die.

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The influence of the drawing parameters and temperature rise on the prediction of chevron crack formation in wire drawing

Cited by 17 publications

References 25 publications

Aspects of Die Geometry Influencing Drawability of Metals During Wire Drawing: A Literature Review

Aspects of Die Geometry Influencing Drawability of Metals During Wire Drawing: A Literature Review

Tensile fracture of ultrafine grained aluminum 6061 sheets by asymmetric cryorolling for microforming

Impact of Die Radius in a Streamlined Die during Wire Drawing

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