Effect of the techniqie of drawing with shear on the structure and the properties of low-carbon wires

TL;DR

This paper introduces a shear-based drawing technology for low-carbon steel wires that enhances mechanical properties, reduces pore formation, and improves workability without heat treatment, compared to classical methods.

Contribution

The study develops and evaluates an experimental shear drawing technology that improves wire properties and process efficiency over traditional drawing methods.

Findings

Increased mechanical properties of wire samples.

Reduced pore formation in small diameter wires.

Enhanced workability and reduced drawing effort.

Abstract

The technology of drawing with shear is developed. It allows increasing technological plasticity of low carbon steel without heat treatment. It is found that the use of experimental technology can improve mechanical properties of wire samples with the diameter reduced during drawing: the relative reduction of the wire decreases slightly and remains at high level compared with the classical technology, where the relative reduction in the course of drawing drops more than twice. It is shown that the use of experimental technology allows varying the size of a ferrite grain (increase or decrease) compared with the classical technology, where increasing of deformation degree results in grain reduction. Furthermore, the experimental technology allows reducing the number of pores in a wire of small diameter. To prevent heating of the wire and the drawing dies, it is proposed to use experimental drawing through two experimental dies with shear separated by an ordinary die. As a result, the workability of the process will be enhanced and the efforts of drawing will be reduced.