Flux-cored wire for large-current vertical-up welding and preparation method and application thereof
A technology of flux-cored welding wire and high current, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems of unformable welding seam and low welding efficiency, so as to increase welding current and improve moisture absorption. , the effect of improving stability
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[0035] The following describes the technical solutions in the embodiments of the present invention clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0036] The present invention provides a gas-shielded high-current flux-cored welding wire for vertical upward welding, comprising a sheath and a flux core filled in the sheath, and the flux core accounts for 14.0-14.5% of the flux-cored wire by mass; The components of the flux core and their mass percentages in the flux cored wire are as follows: TiO 2 5.0~5.8%, smelting agent 1.4~1.9%, Si 0.4~0.5%, Mn1.6~2.0%, Mg-Al alloy 0.42~0.65%, Ti 0.14~0.21%, B 0.056~0.08%, Fe balance. The composition ratio of the flux-cored welding w...
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