High ductility climate resistant solder stick with tensile strength of 600MPa

Abstract

The invention relates to a high-flexibility welding bar whose tensile strength is 600MPa. Wherein, its components comprise that marble at 6-42;derbyshire spar at 16-22;ferrotitanium at 9-12;medium-carbon ferromanganese at 4-6; ferrosilicium at 1-3;synthetic mica at 1-3;micro silicon powder at 1-3;iron powder at 12-18;chrome metal at 1-2;copper powder at 0.5-1; nickel at 1-2;molybdenum at 0.3-0.8; and titanium white at 2-5. The inventive product has better corrosion resistance, with better low-temperature impact flexibility at -40Deg. C; and its yield strength is higher than 500MPa;tensile strength is higher than 600MPa; extensibility is higher than 20%;and (-40Deg. C) Akv>=60J.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a high-strength, high-toughness weather-resistant welding rod. Background technique [0002] At present, there is no high-strength and high-toughness weather-resistant electrode with yield strength ≥ 500MPa, tensile strength ≥ 600MPa, and CVN impact toughness Akv ≥ 60J at -40°C. [0003] Weathering steel electrodes include: Cu-P, Cr-Cu, Ni-Cu, W-Cu, Cr-Ni-Cu alloy system. Cu-P series electrodes are less used because of their high P content, poor toughness and weldability; Cr-Cu, Ni-Cu, and W-Cu alloys are not well compatible with high-strength weathering steel Q500NQR1 and Q550NQR1 with a tensile strength of 600MPa matching. [0004] But there is currently no weathering steel electrode with a tensile strength of 600MPa. The Cr-Ni-Mo-Cu alloy system used in the patent of the present invention. Therefore, J606RH can be selected as the reference electrode. [0005] There is one...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high-toughness weather-resistant electrode with a tensile strength of 600 MPa to so