Solid core welding stick original material wire

Abstract

To provide a solid wire raw material wire for manufacturing a solid wire for gas-shielded arc welding, the solid wire reduces the slight deviation of the arc voltage caused by the solid wire itself during welding, and can obtain excellent arc stability . The solid wire raw material contains: C: 0.02-0.15% by mass, Si: 0.1-1.0% by mass, Mn: 0.5-2.0% by mass, and the balance is Fe and unavoidable impurities. There are a total of 9 points in total at 8 points at equal intervals around the periphery, and when the viewing area of ​​each point is set to 3.4 μm × 4.6 μm for observation, Ca oxides and Al oxides with a maximum length of 0.5 μm or more are in total at the 9 points There are no more than 10.

Description

technical field [0001] The invention relates to a solid welding wire raw material wire, in particular to a solid welding wire raw material wire for manufacturing a solid welding wire for gas-shielded arc welding, and the solid welding wire has excellent arc stability during welding operations. Background technique [0002] Gas shielded arc welding is applied to various structures. Among them, in the fields of automobiles, vehicles, and construction machines, solid wires are often used as arc welding materials for gas-shielded arc welding. Recently, the full automation of welding work and the unmanned operation brought about by machine repair welding are flourishing. With the full automation and unmanned operation of this welding work, the conduit tube (conduit tube) through which the solid welding wire passes will be greatly buckled. Therefore, various improvements in feedability of the solid wire have been made. For example, in JP-A-10-146693, research on lubricants for s...

AI Technical Summary

Problems solved by technology

If gas-shielded arc welding is performed using the solid welding wire based on the above-mentioned prior art, there is a problem that the arc voltage slightly varies, and the required beautiful weld bead shape cannot be obtained.

In addition, even if the composition and composition of the raw material wire of the solid core wire are the same, and the solid welding wire is produced from the raw material wire of the solid core wire according to the same manufacturing method, when these solid wires are used for welding, there are still problems due to the solid wire The problem is that the stability of the arc is different due to the production batch

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