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Ti-Al-V-Mo series metal powder core flux-cored wire and preparation method thereof

A technology of ti-al-v-mo and flux-cored welding wire, which is applied in the field of welding materials, can solve the problems of high preparation costs, achieve the effects of low cost, refine weld grains, and increase weld strength

Active Publication Date: 2022-05-13
HARBIN WELDING INST LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a Ti-Al-V-Mo series metal for the technical problems of the high preparation cost of the existing titanium alloy flux-cored welding wire and the need to clean the slag crust after welding, which is not suitable for welding narrow-gap titanium alloy thick-walled components. Powder-cored flux-cored welding wire and preparation method thereof

Method used

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  • Ti-Al-V-Mo series metal powder core flux-cored wire and preparation method thereof
  • Ti-Al-V-Mo series metal powder core flux-cored wire and preparation method thereof
  • Ti-Al-V-Mo series metal powder core flux-cored wire and preparation method thereof

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Embodiment 1

[0034]Embodiment 1, a kind of Ti-Al-V-Mo series metal powder flux-cored welding wire of the present embodiment is composed of Ti-10Mo-4Nb-4V sheath and the flux core filled therein, wherein the flux core is made of vanadium powder by mass fraction 5%, 12% of aluminum powder, 3% of molybdenum powder, 3% of iron powder and the balance of titanium powder, the filling rate of the drug core is 22%, and the particle size of the aluminum powder and titanium powder is 80~ 120 mesh, the granularity of described vanadium powder, molybdenum powder, iron powder is 80~200 mesh, described Ti-10Mo-4Nb-4V sheath (tensile strength is 810MPa, yield strength is 560MPa, elongation after breaking is 44% ) has a thickness of 0.45mm, a width of 7mm, and a length of 40m. The chemical composition and mass percentage of the Ti-10Mo-4Nb-4V skin are: Mo: 10.05%, Nb: 4.09%, V: 4.01%, Al: 3.02%, H ≤ 0.013%, N ≤ 0.015%, O ≤ 0.010%, and the balance is Ti. The chemical composition and mass percentage of the d...

Embodiment 2

[0040] Embodiment 2: the present embodiment is different from embodiment 1 in that: the medicine core is mixed by mass fraction by vanadium powder 7%, aluminum powder 15%, molybdenum powder is 5%, iron powder 3.5% and surplus titanium powder, The filling rate of the flux core is 24%, and the chemical composition and mass percentage of the deposited metal after the flux cored wire is welded are: V: 7.07%, Al: 13.2%, Mo: 8.45%, Fe: 2.98 %, Nb: 1.0%, and the balance is Ti. Other steps and parameters are the same as in Example 1.

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Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a Ti-Al-V-Mo series metal powder-cored flux-cored welding wire and a preparation method thereof. Background technique [0002] TC4 titanium alloy is an important structural material, because of its excellent comprehensive properties (low density, high specific strength, stable corrosion resistance and high temperature resistance, etc.), it is widely used in aerospace, deep submersibles and weaponry and other fields . According to the difference of phase composition of titanium alloy, it can be divided into three types: α type, α+β type and β type, and TC4 titanium alloy is the most widely used material in α+β type duplex titanium alloy, and it has Excellent welding performance, and widely used in welded components. [0003] The filling welding of titanium alloy thick-walled components mostly adopts gas metal shielded welding and laser wire filling welding,...

Claims

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Application Information

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IPC IPC(8): B23K35/32B23K35/40B23K9/167B23K26/21
CPCB23K35/325B23K35/40B23K9/167B23K26/21
Inventor 方乃文徐锴龙伟民黄瑞生李伟徐亦楠武鹏博尹立孟邹吉鹏陈玉华曹浩秦建谢吉林邵丹丹
Owner HARBIN WELDING INST LTD
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