Nosov Magnitogorsk State Technical University (Magnitogorsk, Russia):

V. A. Kharitonov, Cand. Eng., Prof., Dept. of Materials Processing Technology

Beloretsk Metallurgical Plant (Beloretsk, Russia):
D. E. Gallyamov, Leading Engineer-Technologist, Central Plant Laboratory, e-mail: gallyamov2010@gmail.com

Steel cold-drawn wire is the most common type of hardware products. It is widely used in engineering, construction and other industries. The main method of wire production is drawing in monolithic drawing. However, the drawing has signifi cant disadvantages: an unfavorable scheme of the stress-strain state in the deformation zone, unevenness of deformation, monotony of the deformation process. They contribute to the intensive reduction of strength and plastic properties of the wire. These problems can be solved by improving the traditional method of drawing and using new technological processes for the production of wire. A promising direction of improvement of drawing is the creation of combined methods, when due to the interaction of two or more different schemes of deformation, a process is formed that has a new complex of properties. The paper proposes a modular-combined method of drawing steel wire, consisting in successive drawing through roller die and monolithic die. A comparative analysis of drawn high-strength steel wires in the monolithic die and proposed combined method. Completed industrial experiments confirm that the new method makes it possible to obtain a steel wire of higher quality than is possible with traditional drawing. The high level properties of the wire is provided through repeated alternation of two different deformation schemes. Achieved computer study of the proposed method by finite element method in the software complex “DEFORM-3D”. A method of determining the partial warps and distribution module in between the drawing rollers and monolithic die, and calculate the cross-sectional area of the intermediate profile.

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