Superfine extra-high-strength steel wire, steel wire rod, and production method of steel wire rod

Abstract

The invention discloses a superfine extra-high-strength steel wire, a steel wire rod for the superfine extra-high-strength steel wire, and a production method of the steel wire rod. The superfine extra-high-strength steel wire is prepared from the chemical components in percentage by mass: 0.90 to 0.96 percent of C, 0.12 to 0.30 percent of Si, 0.30 to 0.65 percent of Mn, 0.10 to 0.30 percent of Cr, less than or equal to 0.004 percent of Al, less than or equal to 0.001 percent of Ti, less than or equal to 0.01 percent of Cu, less than or equal to 0.01 percent of Ni, less than or equal to 0.01 percent of S, less than or equal to 0.01 percent of P, less than or equal to 0.0006 percent of O, less than or equal to 0.0006 percent of N, and the balance Fe and inevitable impurity elements, whereinthe size of an occluded foreign substance is less than or equal to 4mum, and the average density of the brittle occluded foreign substance is less than or equal to 2pieces / mm<2>. The steel wire rod for the superfine extra-high-strength steel wire can be used as base metal for producing the superfine extra-high-strength steel wire with the diameter being 50 to 60mum and the tensile strength beinglarger than or equal to 4500MPa, and the mileage without wire breakage is larger than or equal to 300km in the process of drawing to prepare the superfine extra-high-strength steel wire. The production method comprises the steps of vacuum induction melting, remelting, forging and steel rolling.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting, and relates to a wire rod for ultra-fine ultra-high-strength steel wire, and also relates to an ultra-fine ultra-high-strength steel wire further processed from the wire rod for ultra-fine ultra-high-strength steel wire, and a A method for producing a wire rod for ultra-fine ultra-high-strength steel wire. Background technique [0002] Ultra-fine ultra-high-strength steel wire is a kind of high-strength steel wire in industrial applications. It is often used as cutting wire for cutting solar silicon wafers, quartz materials, single crystal silicon and other materials. Cutting wire, also known as cutting wire, cutting steel wire, and cutting wire, is a special wire used for cutting, and it is also a special steel wire with a diameter of less than 0.20mm and a galvanized copper surface. It is widely used as a consumable material In the field of energy, aviation, equipment and publi...

AI Technical Summary

Problems solved by technology

In view of the fact that the wire rod for cutting steel wire prepared by the current production process in this technical field has problems such as large size of inclusions, high number density of inclusions, and low tensile strength, the performance of the existing cutting steel wire cannot meet market demand.

Images