Study of Deformation Stability during Semi-Dieless Drawing of Ti-6Al-4V Alloy Wire

Li, Kaisong; Wang, Zhang-Ke; Liu, Xuefeng

doi:10.3390/ma12081320

Cited by 3 publications

(3 citation statements)

References 21 publications

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“…However, an increase in the velocity requires an increase in the heating device power, since the material heating time is inversely proportional to the velocity. Practically used material velocities cover the range of 0.25–1.1 m/s [ 4 , 32 ]. The difference between the velocities V 0 and V 1 determines the elongation of the wire and is limited by the workability of the material under the given conditions.…”

Section: Methodsmentioning

confidence: 99%

Experimental and Numerical Study of Surface Roughness of Thin Brass Wire Processed by Different Dieless Drawing Processes

et al. 2021

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This paper examines the surface roughness of a thin brass wire (140–200 microns in diameter) after two dieless drawing (DD) processes, i.e., conventional dieless drawing (CDD) and incremental dieless drawing (IDD). In incremental dieless drawing, small increments in deformation were applied in several passes. It has been proven that the IDD process not only has a greater efficiency but also enables obtaining a wire with significantly lower surface roughness. The explanation for these effects is based on the results of the numerical modeling of both compared processes. The developed numerical model takes into consideration the initial roughness of the wire surface, shape and dimensions of grains, and their diversified mechanical properties. Nanoindentation measurements, microstructure, and plastometric studies allowed us to find the effective flow stress distribution in the grains. The IDD process was found to be much more stable and develop a much more uniform distribution of grain strain than the CDD process. More homogeneous deformation results in surface roughness reduction. Approximately 25–30% reduction in surface roughness of the wire produced by the IDD process was predicted by simulations and confirmed experimentally.

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Section: Methodsmentioning

confidence: 99%

Experimental and Numerical Study of Surface Roughness of Thin Brass Wire Processed by Different Dieless Drawing Processes

et al. 2021

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“…DD enables to obtain a product with a variable cross-sectional shape and size of the product along its length [5], which is impossible to obtain with conventional drawing or extrusion. Also, DD can be used in conjunction with conventional wire drawing [6].…”

Section: Introductionmentioning

confidence: 99%

“…Fig 6. The flow stress of the CuZn37 alloy for selected strain rates and temperatures: 400 °C (a), 500 °C (b), 600 °C (c)…”

mentioning

confidence: 99%

Investigation of the workability and surface roughness of thin brass wires in various dieless drawing technologies

Milenin

Wróbel

Kustra

2021

Archiv.Civ.Mech.Eng

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Possibilities of improving the workability of the CuZn37 brass thin wire in a diameter of 0.14–0.18 mm produced by the dieless drawing processes were explored. The workability was defined as the maximum final longitudinal strain of the wire up to its fracture, achievable in the dieless drawing process. Two technologies of dieless drawing were developed and their workability was compared. The first one is the classical one-pass process; the second, a multi-pass one. For both developed technologies, it was possible to obtain a good-quality product but more than two times higher workability has been demonstrated for the multi-pass technology. No evident effect of the deformation temperature from the window of technologically accepted parameters on the workability was found but an increase in the temperature significantly increased the roughness of the product surface. For the same deformation temperature, the roughness of the wire obtained from the multi-pass process appeared to be significantly lower than for the one of the classical one-pass technologies.

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Novel drawing technology for high area reduction manufacturing of ultra-thin brass wires

Kustra

Wróbel

Dymek

et al. 2023

Archiv.Civ.Mech.Eng

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A significant increase in roughness of dieless-drawn wires due to the strain-induced roughness phenomenon has been documented. For small-diameter wires, even a slight surface relief creates stress concentrations that may contribute to the wire breakage during cold drawing. This, in turn, significantly limits the achievable diameter of the product and the efficiency of drawing process. The present study, however, demonstrates that reducing the wire roughness is possible by combining the dieless and conventional drawing methods. Thus, it is possible to improve the process workability threefold when compared to dieless drawing alone, and the product quality is simultaneously improved. In addition, the surface defects typical to the dieless-drawn wires have been significantly reduced, resulting in an increase in the wire strength. This new combined technology enables a significant reduction in the wire diameter and facilitates an economical large-scale production of ultra-thin wires. In addition, based on the classic drawing and dieless drawing process, a brass wire with a diameter of 0.017 mm has been manufactured. Six times thinner than a human hair, it is believed to be the thinnest long brass wire currently manufactured in the world.

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Study of Deformation Stability during Semi-Dieless Drawing of Ti-6Al-4V Alloy Wire

Cited by 3 publications

References 21 publications

Experimental and Numerical Study of Surface Roughness of Thin Brass Wire Processed by Different Dieless Drawing Processes

Experimental and Numerical Study of Surface Roughness of Thin Brass Wire Processed by Different Dieless Drawing Processes

Investigation of the workability and surface roughness of thin brass wires in various dieless drawing technologies

Novel drawing technology for high area reduction manufacturing of ultra-thin brass wires

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