INFLUENCE OF DRAWING DIE GEOMETRY ON THE MECHANICAL PROPERTIES OF LOW-CARBON STEEL WIRES

Language: BGPages: 31–38

Eng. Ivan Iliev, PhD Student

Department of Materials Science and Technology University of Ruse

E-mail: iiivanov@uni-ruse.bg

Assoc. Prof. Danail Gospodinov, PhD

Department of Materials Science and Technology University of Ruse

ORCID: 0000-0002-8239-2321

E-mail: dgospodinov@uni-ruse.bg

Prof. Rossen Radev, PhD

Department of Materials Science and Technology University of Ruse

ORCID: 0000-0003-3856-5341

E-mail: rradev@uni-ruse.bg

Abstract: In this study, the influence of the die working angle and the degree of cross-sectional reduction during the cold drawing of low-carbon steel wires was analyzed with respect to their mechanical performance, while also considering the economic efficiency of the process. Experimental trials were carried out using two wire diameters- 2.80 mm and 4.10 mm-at die working cone angles of 12° and 16°, and reduction ratios of 17%, 23%, and 27%. The obtained results demonstrate that increasing both the reduction ratio and the working cone angle leads to higher tensile and yield strengths, accompanied by a decrease in ductility. Based on the analysis, the optimal die geometry parameters were identified, ensuring the most favorable mechanical properties and cost-effectiveness for wire production intended for nail manufacturing.

Keywords: wire, die, drawing, steel

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