Abstract: Provided is a ferrite-based stainless steel welding wire that has excellent oxidation resistance properties and high temperature strength. This ferrite-based stainless steel welding wire has a composition containing, in mass %, 0.001-0.050% of C, 0.01-2.00% of Si, 0.01-1.50% of Mn, 0.030% or less of P, 0.010% or less of S, 16.0-25.0% of Cr, 0.001-0.150% of Ti, 0.020% or less of O, and 0.05% or less of N, further containing at least one selected from 0.01-1.80% of Nb, 0.01-3.60% of Mo, and 0.01-3.60% of W, and satisfying formulae (1), (2), and (3), with a balance being Fe and unavoidable impurities. Formula (1): [Nb]+[Mo]+[W]+0.25[Si]?2.2, formula (2): [Mo]+[W]?3.6, formula (3): [Ti]+[Al]?0.15, where [ ] in the formulae represents the content in mass % of the element indicated in [ ].

Abstract: The present invention relates to a ferritic stainless steel welding wire, including, in terms of mass %: C: ?0.050%; Si: ?1.00%; Mn: 2.50% to 5.00%; P: ?0.040%; S: ?0.010%; Cu: ?0.50%; Ni: 0.01% to 1.00%; Cr: 12.0% to 20.0%; Mo: ?0.50%; Ti: 0.20% to 2.00%; Nb: 0.10% to 0.80%; Al: 0.020% to 0.200%; Mg: ?0.020%; O: ?0.020%; and N: 0.001% to 0.050%, with the balance being Fe and unavoidable impurities, and having a Ni equivalent represented by Equation (1) of 1.0 to 3.0, Ni equivalent=[Ni]+0.5×[Mn]+30×[C]+30×([N]?0.06) Equation (1), in Equation (1), [X] represents a content (mass %) of an element X, and relates to a welded part.

Abstract: A contact provided in a welding tip of an arc welding apparatus includes a tip body adapted to be mounted to a welding torch body and a tip end member formed integrally therewith. The tip end member is divided into two parts, i.e., first and second halves by means of a slit formed along the axis of the tip end member, and the first half having the predetermined rigidity is movable around a connection between itself and the tip body. A spring member fitted on the tip end member applies a spring force thereto, whereby the contact has improved durability.

Abstract: A contact provided in a welding tip of an arc welding apparatus includes a tip body adapted to be mounted to a welding torch body and a tip end member formed integrally therewith. The tip end member is divided into two parts, i.e., first and second halves by means of a slit formed along the axis of the tip end member, and the first half having the predetermined rigidity is movable around a connection between itself and the tip body. A spring member fitted on the tip end member applies a spring force thereto, whereby the contact has improved durability.