CN107363433B - A kind of titanium or titanium alloy flux-cored wire used for welding - Google Patents

A kind of titanium or titanium alloy flux-cored wire used for welding Download PDF

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Publication number
CN107363433B
CN107363433B CN201710819990.5A CN201710819990A CN107363433B CN 107363433 B CN107363433 B CN 107363433B CN 201710819990 A CN201710819990 A CN 201710819990A CN 107363433 B CN107363433 B CN 107363433B
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powder
titanium
welding
medicine core
mass percent
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CN107363433A (en
Inventor
刘多
闫耀天
冯吉才
曹健
李洪亮
张洪涛
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Harbin Institute of Technology Weihai
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Harbin Institute of Technology Weihai
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
    • B23K35/325—Ti as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • B23K35/0266—Rods, electrodes, wires flux-cored
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/3603—Halide salts
    • B23K35/3605—Fluorides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/14—Titanium or alloys thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

The present invention provides a kind of flux-cored wires for titanium or titanium alloy welding, are made of crust and internal active medicine core.The crust is that Ti content mass percent is not less than 98%, and hydrogen content mass percent is no more than 0.015% titanium band, and internal activity medicine core is made of metal powder, Si powder, B powder and activating agent, and the mass percent of each constituent: Ti is 16%~34%；B is 2%~6%；Co is 0.2%~0.4%；Mn is 0.8%~1%；Si is 0.10%~0.25%；Ni is 1%~3%；Cu is 1%~3%；Chloride is 1%~5%；Fluoaluminate is 12%~16%；MgF2 is 5%~15%；SrF2 is 20%~60%.Wherein chloride, fluoaluminate, MgF2 and SrF2 are the bioactive agent composition in medicine core.It is big to weld depth-to-width ratio, deposition efficiency is high, and simplifies welding process flow, the welding suitable for titanium or titanium alloy.

Description

A kind of titanium or titanium alloy flux-cored wire used for welding
Technical field
The invention belongs to technical field of welding materials, the welding for titanium or titanium alloy material.
Background technique
Titanium and its alloy corrosion resistance are excellent, density is small, specific strength is high, good toughness, cryogenic property and high-temperature behavior are excellent, quilt It is widely used in the industrial departments such as aerospace, automobile, chemical industry, metallurgy, shipbuilding, nuclear power.Wherein titanium alloy plate weldment quilt Extremely more is applied to some special occasions, such as manufacture artificial earth satellite, space shuttle, this external welding is also titanium alloy material Using the important means with maintenance, therefore studies titanium alloy welding and be of great significance to industrial development.
The welding methods such as argon arc welding, submerged-arc welding and electron beam welding can be used in titanium alloy welding at present, wherein especially with argon arc welding Efficiency highest, the scope of application are most wide, have become a hot topic of research.And welding material is influence welding process and joint quality important Factor, current research is mostly focused on the exploitation that TIG welds solid wlding, as patent CN101966631A discloses a kind of high temperature Titanium alloy welding solid welding wire, patent CN1814395A disclose a kind of high-strength dual-phase titanium alloy solid welding wire, patent CN104084712A discloses a kind of titanium alloy welding solid welding wire that corrosion resistance is strong.Although above-mentioned solid welding wire can get The connector of better performances, but in application process, in order to obtain larger fusion penetration, reduces energy consumption, to be usually aided with activating agent by hand It uses, if patent CN104646866A discloses a kind of titanium alloy welding activating agent and welding method, still uses solid welding wire, it is auxiliary It is used with activating agent, but it uses the low efficiency of manual coating method, and activating agent overlay is easy to happen in welding process It falls off, influences welding quality.
Summary of the invention
The purpose of the present invention is to propose to solution to the problems described above, provides a kind of titanium or titanium alloy welding and welded with medicine core Activating agent is added in flux-cored wire by silk, flux-cored wire of the invention, and activating agent is transitioned by flux-cored wire in the welding process In arc atmosphere, it without coating activating agent by hand, not only can simplify process flow, but also can guarantee welding quality, realize High-quality welding to titanium or titanium alloy.
A kind of titanium-base alloy flux-cored wire, including metal sheath and internal active medicine core, the metal sheath are Ti content Mass percent is not less than 98%, and hydrogen content mass percent is no more than 0.015% titanium band, and internal activity medicine core is by metal powder, B Powder, Si powder and activating agent composition, the metal powder includes Ti, Co, Mn, Ni and Cu, the activating agent include chloride, Fluoaluminate, MgF2And SrF2, the metal powder, B powder, Si powder and each constituent of activating agent mass percent: Ti is 16%~34%；Co is 0.2%~0.4%；Mn is 0.8%~1%；Ni is 1%~3%；Cu is 1%~3%；B is 2%~6%；Si It is 0.10%~0.25%；Chloride is 1%~5%；Fluoaluminate is 12%~16%；MgF2It is 5%~15%；SrF2For 20%~60%.
Through the above technical solutions, novel titanium-base alloy flux-cored wire provided by the invention, by the activating agent in medicine core Electric arc is shunk, and changes weld pool surface Tension Temperature coefficient, makes liquid metal from periphery to molten bath center flow, thus by electric The heat of arc is more transmitted to bottom, to increase welding penetration, increases welding point depth-to-width ratio.Technical solution of the present invention passes through Adjustment medicine core component obtains optimum proportioning, can improve the plasticity and toughness of welding point, reduces welding defect, meets tensile strength and want It asks.The mass fraction of titanium valve is 16%~34% in the present invention, is the more ingredient of content, it is to fill welding groove；It is living MgF in property agent2And SrF2It can make arc constriction, chloride (optional NaCl) can be such that weld pool surface Tension Temperature coefficient changes, lead Cause liquid metal from periphery to molten bath center flow, the two is all conducive to enhance heat transmission, to increase fusion penetration；The fluorine aluminium of addition (NaAlF can be selected in hydrochlorate6) it can effectively inhibit the content of O and H in weld seam, improve joint toughness.Matter is added in metal powder The Co that amount score is 0.2%~0.4% advantageously reduces weld seam thermal expansion coefficient, reduces connector residual stress；Mass fraction is added Crystal boundary energy is reduced with state of atom segregation in crystal boundary for 2.0%~6.0% B, inhibits forming core and the growth of structure cell, refinement is brilliant Grain；On the one hand the Si that 0.8%~1.0% Mn and 0.1%~0.25% is added can make the abundant deoxidation of weld metal, on the other hand pass through Solution strengthening effect improves weld seam tensile strength.The Cu and mass fraction that addition mass fraction is 1.00%~3.00% are 1.00% ~3.00% Ni is conducive to improve the plasticity of welding point；Metal powder granularity of the present invention is 80~100 mesh, B powder, Si powder And the granularity of activating agent is 100-200 mesh.
Further, it through section made of reel and drawing is circular titanium tube that outer layer metal skin of the present invention, which is titanium band, described Titanium tape thickness is 0.1mm~0.6mm, and width is 5mm~10mm.
Further, metal powder granularity of the present invention is 80-100 mesh, and the granularity of B powder, Si powder and activating agent is 100-200 mesh.
Further, in medicine core of the present invention each constituent mass percent are as follows: Ti 20%, Co 0.3%, Mn are 0.9%, Ni 2%, Cu 2%, B 4%, Si 0.17%, NaCl 3%, NaAlF6For 14%, MgF2For 10%, SrF2For 43.63%。
The beneficial effects of the present invention are: novel titanium-base alloy flux-cored wire provided by the invention is welded using existing MIG Equipment is connect, without coating activating agent by hand, increases welding penetration by the effect of medicine core, increases welding point depth-to-width ratio, refinement Crystal grain, simplification of flowsheet and welding performance is excellent, postwelding activating agent medicinal powder skull easy to clean, appearance of weld is good, is suitable for The welding of titanium and its alloy, with good application prospect.
Detailed description of the invention
Fig. 1 is the seam organization figure of columnar zone in embodiment 3.
Fig. 2 is the seam organization figure in equiax crystal area in embodiment 3.
Specific embodiment
Titanium-base alloy flux-cored wire of the invention is described further below by example.
A kind of titanium-base alloy flux-cored wire, including metal sheath and internal active medicine core, the metal sheath are Ti content Mass percent is not less than 98%, and hydrogen content mass percent is no more than 0.015% titanium band, and internal activity medicine core is by metal powder, B Powder, Si powder and activating agent composition, the metal powder includes Ti, Co, Mn, Ni and Cu, the activating agent include chloride, Fluoaluminate, MgF2And SrF2, the metal powder, B powder, Si powder and each constituent of activating agent mass percent: Ti is 16%~34%；Co is 0.2%~0.4%；Mn is 0.8%~1%；Ni is 1%~3%；Cu is 1%~3%；B is 2%~6%；Si It is 0.10%~0.25%；Chloride is 1%~5%；Fluoaluminate is 12%~16%；MgF2It is 5%~15%；SrF2For 20%~60%.It through section made of reel and drawing is circular titanium tube that outer layer metal skin, which is titanium band, and the titanium tape thickness is 0.1mm~0.6mm, width are 5mm~10mm.The metal powder granularity is 80-100 mesh, the grain of B powder, Si powder and activating agent Degree is 100-200 mesh.
The preparation method of flux-cored wire of the invention is that selection is with a thickness of 0.3mm, and width is the titanium band of 8mm, through rotary machine Being rolled into section is circular titanium tube, medicinal powder is inserted during reel, then be drawn into the medicine core that diameter is 1.6mm through drawing machine and weld Silk.
Following table is the chemical component and content of internal active medicine core in embodiment 1-5, chlorine used in the present embodiment 1-5 Compound is NaCl, and used fluoaluminate is NaAlF6。
The chemical component and each component mass fraction of internal medicine core in 1 embodiment 1-5 of table.
The flux-cored wire prepared using the component of embodiment 1-5, carries out soldering test under protection of argon gas.The result shows that Activating agent flux-cored wire provided by the invention can imitate in simplification of flowsheet, raising welding on the basis of guaranteeing welding quality Rate.Welding point fusion penetration is big, and weld width is smaller, and depth-to-width ratio is big, welding stomata, and appearance of weld is beautiful.It measures and connects at room temperature Head average tensile strength is not less than 820MPa, can meet actual demand.Analysis on Microstructure the result shows that, weld grain has centainly The refinement of degree.Especially with the flux-cored wire of the component proportion production of embodiment 3, compared with conventional solid welding wire, phase With under welding parameter, fusion penetration averagely increases 29%, and depth-to-width ratio averagely improves 1.5 times, and crystal grain is comparatively fine, seam organization As depicted in figs. 1 and 2.

Claims (2)

1. a kind of titanium or titanium alloy flux-cored wire used for welding, including metal sheath and internal active medicine core, it is characterised in that described Metal sheath is the titanium band of 0.3mm thickness, 8mm wide, and the Ti content mass percent of titanium band is not less than 98%, hydrogen content quality hundred Divide than being no more than 0.015%, titanium band is rolled through coil machine and the titanium tube rounded into section through drawing, equipped with inside in titanium tube Active medicine core, internal activity medicine core are made of metal powder, B powder, Si powder and activating agent, the metal powder include Ti, Co, Mn, Ni and Cu, the activating agent include chloride, fluoaluminate, MgF2And SrF2, the metal powder, B powder, Si powder and work The mass percent of property each constituent of agent: it be 0.2%~0.4%:Mn is 0.8%~1%:Ni that Ti, which is 16%~34%:Co, Be 1%~3%:B powder for 1%~3%:Cu be 2%~6%:Si powder be 0.10%~0.25%: chloride is 1%~5%: fluorine Aluminate is 12%~16%:MgF2For 5%~15%:SrF2It is 20%~60%；Metal powder granularity is 80-100 mesh, B The granularity of powder, Si powder and activating agent is 100-200 mesh.
2. a kind of titanium or titanium alloy flux-cored wire used for welding according to claim 1, which is characterized in that the internal medicine core In each constituent mass percent are as follows: Ti 20%, Co 0.3%, Mn 0.9%, Ni 2%, Cu 2%, B powder is 4%, Si powder are 0.17%, chloride 3%, fluoaluminate 14%, MgF2For 10%, SrF2It is 43.63%.
CN201710819990.5A 2017-09-13 2017-09-13 A kind of titanium or titanium alloy flux-cored wire used for welding Active CN107363433B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022233691A1 (en) * 2021-05-03 2022-11-10 Nv Bekaert Sa Titanium deposition wire of the powder-in-tube type

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CN108000004B (en) * 2017-12-11 2019-11-05 哈尔滨工业大学 A kind of preparation method of the titanium flux-cored wire for 3D printing titanium composite material
CN111745268A (en) * 2020-06-05 2020-10-09 中国兵器科学研究院宁波分院 Self-protection flux-cored wire suitable for TC4 titanium alloy welding and preparation method thereof
CN113084457B (en) * 2021-04-12 2023-01-03 滨州渤海活塞有限公司 Metallographic strengthening manufacturing method of piston
CN114473294B (en) * 2021-12-28 2022-10-14 哈尔滨焊接研究院有限公司 Ti-Al-V-Mo series metal powder core flux-cored wire and preparation method thereof
CN114654128B (en) * 2022-03-21 2022-10-28 哈尔滨焊接研究院有限公司 TC4 titanium alloy metal powder core flux-cored welding strip and preparation method thereof
CN114952071B (en) * 2022-05-30 2024-02-27 北京智双科技发展有限公司 Surfacing wear-resistant flux-cored wire for titanium-based drill rod and preparation method and application thereof

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CN104084712A (en) * 2014-07-04 2014-10-08 常州华通焊业股份有限公司 High-corrosion-resistance low-cost titanium alloy welding wire for titanium alloy welding
CN104646866A (en) * 2015-01-16 2015-05-27 航天材料及工艺研究所 Titanium alloy welding active agent and welding method

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JPH06234096A (en) * 1993-02-12 1994-08-23 Nippon Steel Corp Composite wire for build-up welding to surface of ti base material
CN101456102A (en) * 2009-01-05 2009-06-17 西安理工大学 Alpha titanium alloy manual tungsten-electrode argon-shielded tungsten arc welding refined grain type welding wire and preparation method thereof
CN101966631A (en) * 2009-07-28 2011-02-09 中国科学院金属研究所 Low-cost titanium alloy welding wire suitable for welding titanium alloy at high temperature of over 520 DEG C
CN104084712A (en) * 2014-07-04 2014-10-08 常州华通焊业股份有限公司 High-corrosion-resistance low-cost titanium alloy welding wire for titanium alloy welding
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Publication number Priority date Publication date Assignee Title
WO2022233691A1 (en) * 2021-05-03 2022-11-10 Nv Bekaert Sa Titanium deposition wire of the powder-in-tube type

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