Solid welding wire for gas-shielded electric-arc welding of high-strength steel

Abstract

The invention discloses a solid welding wire for gas-shielded electric-arc welding of high-strength steel, and belongs to the technical field of welding materials. The solid welding wire consists of the following chemical components in percentage by mass: 0.06-0.15% of C, 0.60-1.00% of Si, 1.50-2.00% of Mn, less than or equal to 0.025% of P, less than or equal to 0.020% of S, 0.10-0.60% of Ni, 0.40-0.80% of Cr, less than or equal to 0.25% of Cu, 0.02-0.10% of V, 0.08-0.25% of Ti, 0.002-0.008% of B, less than or equal to 0.0070% of O, less than or equal to 0.0070% of N, and the balance iron and inevitable impurities. The solid welding wire has mechanical property superior to that of a base material, is excellent in welding operation property, is suitable for a relatively wide operation process window, is mature and efficient in industrial production route, and is low in processing manufacturing cost.

Description

technical field [0001] The invention belongs to the technical field of welding materials, in particular to a solid welding wire for gas-shielded arc welding of high-strength steel (hereinafter referred to as solid gas-shielded welding wire). In particular, it provides a solid gas-shielded welding wire with deposited metal tensile strength Rm≥650MPa and its raw material wire rod, which can be used for welding corresponding high-strength steel plates in fields such as engineering machinery, construction, and bridges. Background technique [0002] In recent years, the variety structure of welding materials has changed greatly. Although the consumption of manual welding electrodes is also increasing, the proportion of the total consumption of welding materials has dropped from nearly 80% 10 years ago to less than 50%. The proportion of various types of welding wire required increases to more than 50%, especially solid gas-shielded welding wire, which has the advantages of flexibl...

AI Technical Summary

Problems solved by technology

Due to the impact of the type and quantity of alloys in the cost of the traditional wire rod for high-strength welding wire, it needs to be annealed during the processing and production of the welding wire, and the production cost of the welding wire increases accordingly

Images