Steel wire having excellent straightness quality and method for manufacturing same

Abstract

The present invention relates to a steel wire having an excellent straightness quality and a method for manufacturing same. The steel wire having an excellent straightness quality comprises a wire which goes through, after going through a wire drawing step, a heating step in which the wire is heated in a state where tension is applied thereto, and then goes through a cooling step, wherein when thewire is wound around a winding part having a diameter larger than the diameter of the wire during a predetermined period and then the linearity of the wire configured to have length of 400 mm is measured, the linearity of the wire is 30 mm or less. A method for manufacturing a steel wire having an excellent straightness quality comprises a wire preparing step, a heating step, a cooling step, anda linearity measuring step.

Description

technical field [0001] The present invention relates to a steel wire with excellent straightness quality and a manufacturing method thereof, in particular, to a steel wire with excellent straightness quality and a manufacturing method thereof, which can promote strain aging of the steel wire by heating the steel wire at a temperature above a certain temperature To improve the straight line quality after aging. Background technique [0002] In general, steel wires are used in various industrial fields, for example, used in tires, industrial belts, and the like. Steel wires used in various applications as described above are required to have various quality characteristics, and in particular, straightness of the steel wire is required when the steel wire is used as a material for tire reinforcement. [0003] The steel wire used in the industrial field is not used immediately after manufacture, but is stored by winding the steel wire around a spool having a certain inner diame...

AI Technical Summary

Problems solved by technology

Therefore, when a steel wire is manufactured and wound around a bobbin with a certain inner diameter, there is a change in linearity due to the diffusion and adhesion of C and N atoms, and the linearity decreases

[0006] Due to the above-mentioned problems, existing steel wires cannot provide steel wires with excellent straightness

In other words, the existing steel wire has a problem in that, even if it has excellent linear characteristics in the original production period, when a long time elapses after being wound on a bobbin having a certain inner diameter, deterioration of the linear characteristics occurs due to strain aging under stress in the elastic region. changes, making it difficult to satisfy the characteristics of linearity quality

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