---
publication_id: "OT-2026-000000336"
title: "Arc welding method"
published_at: "2026-09-15T19:02:45.819462Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000336"
categories:
  - "manufacturing-assembly-equipment/joining-and-welding"
keywords:
  - "b23k35/3073"
  - "b23k2101/18"
  - "b23k2103/04"
  - "b23k9/124"
  - "c22c38/001"
  - "c22c38/002"
---

# Arc welding method

## Abstract

An arc welding method includes welding a steel sheet while alternately switching feeding of a welding wire between forward feeding and backward feeding. The welding wire contains, in mass % with respect to a total mass to the welding wire, C: more than 0 and 0.30 or less, Si: 0.01 to 0.30, Mn: 0.5 to 2.5, S: 0.001 to 0.020, Ti: 0.05 to 0.30, and optional elements with the remainder being Fe and unavoidable impurities, and a value obtained by 2×[Ti]/[Si]−50×[S] is more than 1.0. The welding is performed by using a shielding gas containing CO 2 gas in an amount of 80 vol. % or more with respect to a total volume of the shielding gas at a frequency of 40 Hz or more and 200 Hz or less, where one cycle for determining the frequency is one forward feeding and one backward feeding.