The invention discloses a Ti-Al-V-Mo series
metal powder core flux-cored wire and a preparation method thereof. The invention belongs to the technical field of
welding materials. The technical problems that an existing
titanium alloy flux-cored wire is high in preparation cost,
slag shells need to be cleaned after
welding, and the existing
titanium alloy flux-cored wire is not suitable for
welding of narrow-gap
titanium alloy thick-wall components are solved. The Ti-Al-V-Mo series
metal powder core flux-cored wire is composed of a Ti-10Mo-4Nb-4V outer
skin and a flux core filled in the Ti-10Mo-4Nb-4V outer
skin, wherein the flux core is formed by mixing, by
mass, 5%-7% of
vanadium powder, 10%-15% of aluminum powder, 3%-5% of
molybdenum powder, 3%-4% of
iron powder and the balance
titanium powder. The Ti-Al-V-Mo
titanium alloy metal powder core flux-cored wire can be applied to the fields of
laser filler wire welding, non-consumable
electrode gas shielded welding and the like and is good in welding manufacturability, excellent in comprehensive
mechanical property, low in diffusible
hydrogen content, high in welding efficiency and good in weld joint forming,
slag shell cleaning is not needed after welding, and the welding quality is improved. And the groove angle is wide in application range for welding of the TC4
titanium alloy and other double-phase
titanium alloy, and the good application prospect is achieved.