High carbon steel wire rod for fine steel wire production

Abstract

The invention provides a high carbon steel wire rod for producing thin steel wire. The wire rod comprises the following chemical components, by weight, 0.6%-0.88% of [C], 0.1%-1.0% of [Si], 0.3%-1.0% of [Mn], less than or equal to 0.015% of [P], less than or equal to 0.010% of [S], less than or equal to 0.020% of [P+S], less than or equal to 0.004% of [N], less than or equal to 0.002% of [O], less than or equal to 0.002% of [Al], less than or equal to 0.002% of [Ti], less than or equal to 0.001% of [Mg], less than or equal to 0.1% of other inevitable impurities, and the balance of iron. With the present invention, the high carbon steel wire rod provided by the present invention has characteristics of reasonable component designing and excellent processing performance; the foreign substances in the wire rod have low melting point, and elongate along a rolling direction during a hot rolling process, and have a length-width ratio more than 3, such that the wire breaking ratio during the steel wire processing is reduced by 16-28%.

Description

Technical field [0001] The invention belongs to the technical field of wire rods, and in particular relates to a high-carbon steel wire rod for producing fine steel wires. Background technique [0002] With the continuous improvement of automobile weight reduction and energy saving and environmental protection requirements, the requirements for the steel cord used in radial tires are also getting higher and higher. In order to cope with this change, the deformation performance of high carbon steel wire rod needs to be further improved. [0003] The deformation performance of high-carbon steel wire rod depends on the chemical composition of the wire rod on the one hand, especially the content of trace elements such as O, N, Al, Ti, etc., on the other hand, the composition of the inclusions in the wire rod also affects the wire rod. Deformation performance has an impact. The inclusions in the pearlite used to make the wire will cause stress concentration during the deformation proc...

AI Technical Summary

Problems solved by technology

In the above-mentioned patent on the inclusion composition in the wire rod, Al in the inclusion composition 2 o 3 The content is wide, and it cannot guarantee that the composition of the inclusions in the steel reaches the low melting point area, so that the inclusions have good deformability

At the same time, the titanium and other components in the inclusion components of this patent are not specified, which is not conducive to the control of inclusion components