High-strength alloy welding wire steel wire rod and preparation method thereof

Abstract

The invention provides a high-strength alloy welding wire steel wire rod and a preparation method thereof, and belongs to the technical field of welding steel. The high-strength alloy welding wire steel wire rod is prepared from the following components in percentage by mass: 0.060 to 0.100 percent of C, 0.85 to 0.95 percent of Si, 1.45 to 1.55 percent of Mn, 0.30 to 0.40 percent of Cr, 0.030 to 0.040 percent of V, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, 0.0020 to 0.0040 percent of B, 0.10 to 0.15 percent of Ti, less than or equal to 0.0025 percent of O, less than or equal to 0.0035 percent of N, less than or equal to 0.10 percent of Ni, less than or equal to 0.10 percent of Cu, less than or equal to 0.10 percent of Mo and the balance of Fe. According to the high-strength alloy welding wire steel wire rod and the preparation method thereof, the control range of each chemical component of the wire rod is optimally designed, so that the produced wire rod is stable in chemical component, good in cleaning property, low in wire fracture rate in the wire rod drawing process and good in wire rod drawing effect.

Description

technical field [0001] The invention relates to the technical field of welding steel, in particular to a high-strength alloy welding wire steel wire rod and a preparation method thereof. Background technique [0002] High-strength alloy welding wire is mainly used for welding large structural parts, heavy machinery, pressure vessels, pipelines, offshore platforms and special-purpose equipment. Because the high-strength alloy welding wire contains special chemical elements, it is easy to have defects such as unstable chemical composition, poor mechanical properties of the rolled material, and high proportion of abnormal structures inside the wire rod. Affected by the quality of the base metal wire rod, the wire breakage rate in the drawing process is high and normal production is difficult, and downstream welding wire manufacturers are passive in production. In order to improve the mechanical properties of alloy welding wire, it is usually necessary to add precious metals su...

AI Technical Summary

Problems solved by technology

Due to the special chemical elements contained in the high-strength alloy welding wire, it is easy to have defects such as unstable chemical composition, poor mechanical properties of the rolled material, and high proportion of abnormal structures inside the wire rod.

Affected by the quality of the base metal wire rod, the rate of wire breakage in the drawing process is high, and normal production is difficult, and downstream welding wire manufacturers are passive in production

In order to improve the mechanical properties of alloy welding wire, it is usually necessary to add precious metals such as Cr, Ni, Mo and Ti to reduce the content of Si element in the alloy to prepare high-strength alloy welding wire, such as patent (CN111172460A-a 600MPa grade yield strength Steel wire rod for welding wire and its production method), and although the steel wire rod for welding wire has high yield strength, its tensile strength is average, and there is still a problem of high wire breakage rate in the drawing process, and the amount of precious metal High leads to cost increase and cannot meet the practical application

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