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Abstract

The paper discusses a theoretical and an experimental analyses of steel wire drawing in conical drawing dies with a varying length of the die sizing portion. The theoretical analysis was performed in the Drawing 2D, where the wire temperature and drawing stress were determined. The theoretical study was verified by the measurement of drawing force under laboratory conditions and by industrial multi-stage drawing tests carried out under commercial conditions. A relationship has been shown to exist between die sizing portion length and wire temperature and drawing stress.

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Authors and Affiliations

M. Suliga
M. Jabłońska
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Abstract

The paper focuses on the investigation of AISI 302 steel wire of different initial diameters, in solutionized condition. Three different drawing schedules were realized, starting from three different diameters, where two smaller-gauge wires were obtained by drawing of large-diameter wire and applying solution heat treatment to the product. However, the drawing schedules were carried out with almost the same total reduction and similar partial reductions. The measurement of drawing force was performed for each drawing pass, and the samples of wire were taken after each pass. The samples were then tested to obtain a set of mechanical and technological properties, as well as the distribution of Vickers hardness on wire cross section. Finally, the effect of different history of deformation and heat treatment on drawing process stability and final properties of drawn wires was discussed.
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Authors and Affiliations

Maciej Rumiński
1
ORCID: ORCID

  1. AGH University of Krakow , Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Krakow , Poland
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Abstract

In multi-stage wire drawing machines productivity growth can be achieved at higher drawing speeds by preventing wire breakage during the process. One disadvantage of high-speed wire drawing is the requirement imposed by machine dynamics in terms of its stability and reliability during operation. Tensile forces in the wire must maintained by fast synchronization of all capstans speed. In this process, the displacement sensors play the main role in providing the control system with feedback information about the wire condition. In this study, the influences between the sensors and actuator driven capstans have been studied, and tuner roll concept of a wire drawing machine was experimentally investigated. To this aim, measurements were carried out on two drawing stages at different drawing speeds and obtained results were presented. These results clearly show the fast changes of the capstans speed and the angular displacements of the rollers that tighten the wire, which only confirms the high dynamics of the wire drawing machine.

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Authors and Affiliations

Goce Tasevski
Kocho Angjushev
Zlatko Petreski
Dejan Shishkovski

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