CN109317794A - A kind of titanium alloy and stainless steel fill out powder plasma welding method - Google Patents
A kind of titanium alloy and stainless steel fill out powder plasma welding method Download PDFInfo
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- CN109317794A CN109317794A CN201811494765.XA CN201811494765A CN109317794A CN 109317794 A CN109317794 A CN 109317794A CN 201811494765 A CN201811494765 A CN 201811494765A CN 109317794 A CN109317794 A CN 109317794A
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- stainless steel
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- 238000003466 welding Methods 0.000 title claims abstract description 143
- 239000000843 powder Substances 0.000 title claims abstract description 136
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 88
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 88
- 239000010935 stainless steel Substances 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000002131 composite material Substances 0.000 claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 claims abstract description 30
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 27
- 239000010963 304 stainless steel Substances 0.000 claims abstract description 11
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 80
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 45
- 229910052786 argon Inorganic materials 0.000 claims description 40
- 239000007789 gas Substances 0.000 claims description 38
- 239000002245 particle Substances 0.000 claims description 27
- 229910052758 niobium Inorganic materials 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 244000137852 Petrea volubilis Species 0.000 claims description 10
- 239000012300 argon atmosphere Substances 0.000 claims description 10
- 235000019353 potassium silicate Nutrition 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 10
- 238000003032 molecular docking Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 6
- 241000538562 Banjos Species 0.000 claims description 3
- 239000010949 copper Substances 0.000 abstract description 27
- 239000010936 titanium Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 229910052719 titanium Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000006104 solid solution Substances 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000005764 inhibitory process Effects 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910010340 TiFe Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 229910010336 TiFe2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma welding
-
- 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
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
-
- 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
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
Abstract
Powder plasma arc welding method is filled out the present invention relates to a kind of titanium alloy and stainless steel plate, belongs to welding technology field.In the powdered Ni-Cu-Nb-Y of TC4 titanium alloy and 304 stainless steel plate central fillers2O3Composite powder is as intermediate layer material, using plasma-arc as heat source.The weld metal zone brittle intermetallic thing for being formed in weld seam and directly reacting generation between solid solution phase inhibition Ti and Fe is formed in using Ni and Cu, copper, which is added, reduces fusing point, and Nb element and Y is added2O3Rare earth oxide improves welded seam movement and the wetability to base material.Melt stainless steel base material part by controlling PLASMA ARC WELDING technique, titanium alloy is micro- molten, realizes the reliable welding of titanium alloy and stainless steel.This method has many advantages, such as that simple process, composition of weld line are adjustable, forming is good, weld seam flawless, the gas hole defect of acquisition, and connection is reliable.
Description
Technical field
The present invention relates to the welding technology fields of a kind of titanium alloy and stainless steel dissimilar material, and in particular to a kind of titanium alloy
Powder plasma welding method is filled out with stainless steel.
Background technique
Titanium alloy has many advantages, such as that low specific strength height, density, good corrosion resistance, high-temperature behavior are excellent, is important structure
One of material is now widely used for the industries such as aerospace, petrochemical industry, food, medical treatment.The titanium alloy compared with common iron
With excellent corrosion resistance, in the case where the materials such as ocean engineering, petrochemical industry are easy to happen the working condition of corrosion, titanium alloy can be with
As preferred structural material, but higher material cost limits its large-scale application in the industry.Compared with titanium alloy,
304 austenitic stainless steels also have preferable corrosion resistance, and the cost of material is low, machining property and weldability are good.Cause
Titanium alloy is combined the performance advantage and use cost that can take into account the two by this with stainless steel.Titanium alloy and stainless steel dissimilar material
Material is connected to the fields such as ocean engineering, pressure vessels for the chemical industry, aerospace and has broad application prospects.
Titanium alloy and stainless steel dissimilar material weldability are poor, this is because the two has dramatically different physics and chemistry
Performance.Titanium alloy fusing point is about 300 DEG C higher than stainless steel, and fusing cannot be synchronized both when using conventional fusion welding method.Stainless steel
Thermal conductivity and linear expansion coefficient are about 2~3 times of titanium alloy, therefore the welding point in the quick heating of welding and cooling procedure
Two sides heat dissipation is uneven, and expansion and difference in shrinkage are larger, and very big internal stress is often generated inside weld seam, leads to crack initiation
And extension.It is chemically analyzed in performance, titanium alloy chemical property is more active, easily absorbs in air during welding processing
Oxygen, nitrogen and hydrogen, make titanium alloy become fragile；Ti is easy to generate brittle intermetallic compound such as in conjunction with Fe element in welding pool
TiFe, TiFe2Deng causing plastic property of weld bead to reduce, easily crack.In order to solve above-mentioned problem, technical staff develops various welderings
Connect method connection titanium alloy and stainless steel dissimilar connector.As patent CN105855705 propose it is a kind of using laser welding titanium and
The method of stainless steel.The technology uses Nb as intermediate layer material, and dedicated frock clamp is cooperated to realize titanium alloy and stainless
The welding of steel, but the process is more complicated for this in practical application.To avoid direct in molten bath of Ti and Fe from reacting, in titanium steel xenogenesis
Metallic intermediate layer is added in connector is welded into a kind of more feasible technical solution.During the metals such as Nb, V, Ni, Cu, Ag are used as
Interlayer material with titanium alloy and it is stainless steel welded also have correlative study, but metallic intermediate layer is generally sheet or silk material, at this time
The more difficult regulation of weld seam metallurgically.Therefore, when titanium alloy and stainless steel dissimilar material weld, how to middle layer metal alloy
Optimizing components are to inhibit the generation of weld metal zone brittle intermetallic thing in weld seam, and how to select the welding method being simple and efficient and work
Skill realizes that being reliably connected for the two is still technical problem urgently to be resolved.
Summary of the invention
For the problem of above-mentioned exposure, powder Plasma Welding side is filled out the present invention provides a kind of titanium alloy and stainless steel
Method realizes titanium alloy and stainless joint by the design of the alloy of weld seam intermediate layer material and PLASMA ARC WELDING process optimization
It is reliably connected.
Powder plasma welding method is filled out the present invention provides a kind of titanium alloy and stainless steel, the welding method specifically walks
It is rapid as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；The stainless steel plate
Single double V-groove is opened in material side, and the groove angle of the list double V-groove is 45 °, root face 1mm, and connector is using docking or overlapping mode weldering
It connects；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb-Y2O3Composite metal powder；The composite metal powder be by Ni,
Cu, Nb and Y2O3It is mixed with according to mass percent ratio for 48-95%:5.0-40%:0-10%:0-2.0%, the Ni,
Cu, Nb and Y2O3Mass percent summation is 100%；Described Ni, Cu, Nb and Y2O3The purity of powder is 99.9%；The Cu
Powder Particle Size is 300-400 mesh, and the Nb Powder Particle Size is 300-400 mesh, the Y2O3Powder Particle Size is 400-500 mesh, the Ni original washing powder
Last granularity is 250-300 mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；
(5) the last connector of preset batter powder is dry in argon atmosphere, and drying temperature is 100-150 DEG C, soaking time
2-5 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0-0.5mm, welding current 80-120A to stainless steel side along Weld pipe mill when welding,
Weldingvoltage is 16-22V, speed of welding 0.12-0.60m/min, plasma gas flow rate 10-20L/min；In welding process
Protection argon flow is 12-20L/min in support cover；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
Preferably, weld seam metallic intermediate layer uses Ni-Cu-Nb-Y in above-mentioned steps (3)2O3Composite metal powder；It is described multiple
Closing metal powder is by Ni, Cu, Nb and Y2O3It is mixed with according to mass percent ratio for 76%:18%:5%:1%.
Preferably, weld seam metallic intermediate layer uses Ni-Cu-Nb-Y in above-mentioned steps (3)2O3Composite metal powder；It is described multiple
Closing metal powder is by Ni, Cu, Nb and Y2O3It is mixed with according to mass percent ratio for 55%:36%:8%:1%.
Preferably, above-mentioned Ni, Cu, Nb and Y2O3The purity of powder is 99.9%；The Cu Powder Particle Size is 350 mesh, described
Nb Powder Particle Size is 350 mesh, the Y2O3Powder Particle Size is 450 mesh, and the Ni based powders granularity is 400 mesh.
Preferably, when in above-mentioned steps (4) using banjo fixing butt jointing, fore-put powder filling, which is fully welded, stitches and stays reinforcement 0.5-1mm；
When using lap joint, fore-put powder fills full stainless steel side list double V-groove, paste powder pre-set thickness 2.5-3mm.
Preferably, in above-mentioned steps (2) when welding butter joint, weld seam stays gap 1mm；It will be stainless when Welded lap joint
Steel is placed in above titanium alloy, lap width 20-30mm.
The invention has the benefit that
The present invention connects the plasma arc welding (PAW) of realization Ti and stainless steel dissimilar connector by filling the alloy powder of special designing
It connects, has many advantages, such as that simple process, composition of weld line are adjustable, forming is good.In Ti and stainless steel weld joint central filler Ni-Cu-Nb-
Y2O3Composite powder melts powder by regulation PLASMA ARC WELDING technique and fills weld seam, avoids Ti and Fe element directly anti-
Brittle intermetallic compound TiFe, TiFe should be generated2.Cu is added in Ni can form unlimited solid solution and reduce fusing point, be added
Nb and Y2O3The mobility of weld seam and the wetability to base material can be improved.By adjusting Ni-Cu-Nb-Y2O3The matter of composite powder
Amount proportion can flexibly improve the wetability of weld metal mobility and base material, realize good appearance of weld.By opening unilateral V
Type groove and control PLASMA ARC WELDING technique, melt stainless steel base material part in welding point, and Ti alloy is non-fusible or few
Amount fusing, realizes the welding of titanium alloy and stainless steel.In addition, welding method production cost provided by the invention and Laser Welding, electricity
Compared to decreasing, welding efficiency is improved for beamlet weldering.
Detailed description of the invention
Fig. 1 titanium-stainless fills out powder PLASMA ARC WELDING connector assembling schematic diagram: (a) docking mode, (b) overlapping mode；
Fig. 2 titanium-stainless fills out powder PLASMA ARC WELDING face of weld pattern；
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with implementation of the invention
Example, technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without creative efforts, belongs to protection of the present invention
Range.
Embodiment 1
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of the list double V-groove is 45 °, root face 1mm, and connector is welded using docking mode, such as explanation
In book attached drawing in Fig. 1 shown in (a) figure；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb-Y2O3 composite metal powder；Composite metal powder be by Ni, Cu,
Nb and Y2O3It is mixed with according to mass percent ratio for 76%:18%:5%:1%, Ni, Cu, Nb and Y2O3The purity of powder is equal
It is 99.9%；Cu Powder Particle Size is 300 mesh, and Nb Powder Particle Size is 300 mesh, Y2O3Powder Particle Size is 400 mesh, and Ni based powders granularity is 250
Mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；Fore-put powder filling, which is fully welded, stitches and stays
Reinforcement 0.5mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 100-150 DEG C, and soaking time 2-5 is small
When；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 80A, welding electricity to stainless steel side along Weld pipe mill when welding
Pressure is 16V, speed of welding 0.30m/min, plasma gas flow rate 16L/min；Argon gas stream is protected in support cover in welding process
Amount is 12L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure, as shown in Fig. 2 in Figure of description.
Embodiment 2
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of single double V-groove is 45 °, root face 1mm, and connector is welded using overlapping mode；As specification is attached
In figure in Fig. 1 shown in (b) figure；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate, stainless steel is placed in above titanium alloy, lap width
20mm；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb-Y2O3 composite metal powder；Composite metal powder be by Ni, Cu,
Nb and Y2O3It is mixed with according to mass percent ratio for 76%:18%:5%:1%, Ni, Cu, Nb and Y2O3The purity of powder is equal
It is 99.9%；Cu Powder Particle Size is 300 mesh, and Nb Powder Particle Size is 300 mesh, Y2O3Powder Particle Size is 400 mesh, and Ni based powders granularity is 250
Mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；Fore-put powder fills full stainless steel one
Side list double V-groove, powder pre-set thickness 2.5mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 150 DEG C, soaking time 3 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 100A, welding to stainless steel side along Weld pipe mill when welding
Voltage is 18V, speed of welding 0.30m/min, plasma gas flow rate 16L/min；Argon gas is protected in support cover in welding process
Flow is 12L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure, as shown in Fig. 2 in Figure of description.
Embodiment 3
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of single double V-groove is 45 °, root face 1mm, and connector is welded using docking mode；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate；Weld seam stays gap 1mm；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb-Y2O3Composite metal powder；Composite metal powder be by Ni, Cu,
Nb and Y2O3It is mixed with according to mass percent ratio for 55%:36%:8%:1%, Ni, Cu, Nb and Y2O3The purity of powder is equal
It is 99.9%；Cu Powder Particle Size is 350 mesh, and Nb Powder Particle Size is 350 mesh, Y2O3Powder Particle Size is 450 mesh, and Ni based powders granularity is 300
Mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；Fore-put powder filling, which is fully welded, stitches and stays
Reinforcement 0.5-1mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 100 DEG C, soaking time 3.5 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 90A, welding electricity to stainless steel side along Weld pipe mill when welding
Pressure is 18V, speed of welding 0.40m/min, plasma gas flow rate 16L/min；Argon gas stream is protected in support cover in welding process
Amount is 15L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
Embodiment 4
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of single double V-groove is 45 °, and root face 1mm, overlapping splice mode is welded；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate；Stainless steel is placed in above titanium alloy, lap width
20-30mm；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb-Y2O3Composite metal powder；Composite metal powder be by Ni, Cu,
Nb and Y2O3It is mixed with according to mass percent ratio for 55%:36%:8%:1%, Ni, Cu, Nb and Y2O3The purity of powder is equal
It is 99.9%；Cu Powder Particle Size is 350 mesh, and Nb Powder Particle Size is 350 mesh, and Y2O3 Powder Particle Size is 450 mesh, and Ni based powders granularity is 300
Mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；Fore-put powder fills full stainless steel one
Side list double V-groove, paste powder pre-set thickness 2.5-3mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 150 DEG C, soaking time 3.5 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 100A, welding to stainless steel side along Weld pipe mill when welding
Voltage is 19V, speed of welding 0.40m/min, plasma gas flow rate 16L/min；Argon gas is protected in support cover in welding process
Flow is 15L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
Embodiment 5
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of single double V-groove is 45 °, root face 1mm, and connector is welded using docking mode；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Gap 1mm is stayed using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate, weld seam；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb composite metal powder；Composite metal powder be by Ni, Cu and Nb by
It is mixed with according to mass percent ratio for 48%:42%:10%, Ni, Cu, Nb and Y2O3The purity of powder is 99.9%；Cu powder
Granularity is 400 mesh, and Nb Powder Particle Size is 400 mesh, and Ni based powders granularity is 300 mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；Fore-put powder filling, which is fully welded, stitches and stays
Reinforcement 0.5mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 100 DEG C, soaking time 3 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 90A, welding electricity to stainless steel side along Weld pipe mill when welding
Pressure is 18V, speed of welding 0.25m/min, plasma gas flow rate 18L/min；Argon gas stream is protected in support cover in welding process
Amount is 16L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
Embodiment 6
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of single double V-groove is 45 °, root face 1mm, and connector is welded using overlapping mode；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate；Stainless steel is placed in titanium alloy when Welded lap joint
Top, lap width 20mm；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb composite metal powder；Composite metal powder be by Ni, Cu and Nb by
It is mixed with according to mass percent ratio for 48%:42%:10%, the purity of Ni, Cu, Nb and Y2O3 powder is 99.9%；Cu
Powder Particle Size is 400 mesh, and Nb Powder Particle Size is 400 mesh, and Ni based powders granularity is 300 mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；Fore-put powder fills full stainless steel one
Side list double V-groove, paste powder pre-set thickness 2.5mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 150 DEG C, soaking time 3 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 100A, welding to stainless steel side along Weld pipe mill when welding
Voltage is 19V, speed of welding 0.25m/min, plasma gas flow rate 18L/min；Argon gas is protected in support cover in welding process
Flow is 16L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
Embodiment 7
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of single double V-groove is 45 °, root face 1mm, and connector is welded using docking mode；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate；Weld seam stays gap 1mm；
(3) weld seam metallic intermediate layer uses Ni-Cu-Y2O3 composite metal powder；Composite metal powder be by Ni, Cu and
Y2O3 is mixed with according to mass percent ratio for 65%:34%:1%, and the purity of Ni, Cu and Y2O3 powder is 99.9%；
Cu Powder Particle Size is 350 mesh, and Y2O3 Powder Particle Size is 500 mesh, and Ni based powders granularity is 300 mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；Fore-put powder filling, which is fully welded, stitches and stays
Reinforcement 0.5mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 100 DEG C, soaking time 3 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 100A, welding to stainless steel side along Weld pipe mill when welding
Voltage is 19V, speed of welding 0.35m/min, plasma gas flow rate 18L/min；Argon gas is protected in support cover in welding process
Flow is 16L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
Embodiment 8
What the present invention provided a kind of titanium alloy and stainless steel fills out powder plasma welding method, wherein welding method specific steps
It is as follows:
(1) the TC4 titanium alloy plate with a thickness of 2mm and 304 stainless steel materials with a thickness of 2mm are taken；Stainless steel materials one
Single double V-groove is opened in side, and the groove angle of single double V-groove is 45 °, root face 1mm, and connector is welded using overlapping mode；
(2) TC4 titanium alloy and stainless steel materials are polished clean with sand paper, remove removing oxide layer, then with alcohol washes, blow
It is dry；Using the fixed TC4 titanium alloy of argon tungsten-arc welding spot welding and stainless steel plate, stainless steel is placed in above titanium alloy, lap width
20mm；
(3) weld seam metallic intermediate layer uses Ni-Cu-Y2O3 composite metal powder；Composite metal powder be by Ni, Cu and
Y2O3 is mixed with according to mass percent ratio for 65%:34%:1%, and the purity of Ni, Cu and Y2O3 powder is 99.9%；
Cu Powder Particle Size is 350 mesh, and Y2O3 Powder Particle Size is 500 mesh, and Ni based powders granularity is 300 mesh；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；Again
Appropriate waterglass is added and is modulated into paste, last paste powder is preset on welding point；When using lap joint, fore-put powder
Fill full stainless steel side list double V-groove, paste powder pre-set thickness 2.5mm；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 150 DEG C, soaking time 3 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through 99.99% argon gas of purity
Protection；Plasma-arc center deviates 0.5mm, welding current 110A, welding to stainless steel side along Weld pipe mill when welding
Voltage is 19V, speed of welding 0.35m/min, plasma gas flow rate 18L/min；Argon gas is protected in support cover in welding process
Flow is 16L/min；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to
Room temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
According to previous embodiment, invention is explained in detail, those skilled in the art should understand that: its
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equal
Replacement；And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (6)
1. a kind of titanium alloy and stainless steel fill out powder plasma welding method, which is characterized in that the welding method specific steps
It is as follows:
(1) TC with a thickness of 2mm is taken4Titanium alloy plate and 304 stainless steel materials with a thickness of 2mm；The stainless steel materials side
Single double V-groove is opened, the groove angle of the list double V-groove is 45 °, root face 1mm, and connector is using docking or overlapping mode welding；
(2) by TC4Titanium alloy and stainless steel materials are polished completely with sand paper, remove removing oxide layer, then with alcohol washes, drying；It adopts
TC is fixed with argon tungsten-arc welding spot welding4Titanium alloy and stainless steel plate；
(3) weld seam metallic intermediate layer uses Ni-Cu-Nb-Y2O3Composite metal powder；The composite metal powder be by Ni, Cu,
Nb and Y2O3It is mixed with according to mass percent ratio for 48-95%:5.0-40%:0-10%:0-2.0%, described Ni, Cu, Nb
And Y2O3Mass percent summation is 100%；
(4) composite metal powder in step (3) is weighed according to the proportion, is put into ball mill and uniformly mixes 2-4 hours；It adds
Appropriate waterglass is modulated into paste, and last paste powder is preset on welding point；
(5) connector after fore-put powder is dry in argon atmosphere, and drying temperature is 100-150 DEG C, soaking time 2-5 hours；
(6) PLASMA ARC WELDING is used, welding point is integrally put into protection support cover, is passed through purity as 99.99% argon gas guarantor
Shield；Plasma-arc center deviates 0-0.5mm, welding current 80-120A, weldering to stainless steel side along Weld pipe mill when welding
Connecing voltage is 16-22V, speed of welding 0.12-0.60m/min, plasma gas flow rate 10-20L/min；It is held in the palm in welding process
Protection argon flow is 12-20L/min in cover；
(7) continue logical argon gas in blow-out butt cover, titanium alloy side weld dimensions are protected, until connector is cooled to room
Temperature；
(8) postwelding examines appearance of weld situation and connector microscopic structure.
2. titanium alloy according to claim 1 and stainless steel fill out powder plasma welding method, which is characterized in that the step
Suddenly weld seam metallic intermediate layer uses Ni-Cu-Nb-Y in (3)2O3Composite metal powder；The composite metal powder preferred component is
By Ni, Cu, Nb and Y2O3It is mixed with according to mass percent ratio for 76%:18%:5%:1%.
3. titanium alloy according to claim 1 and stainless steel fill out powder plasma welding method, which is characterized in that the step
Suddenly weld seam metallic intermediate layer uses Ni-Cu-Nb-Y in (3)2O3Composite metal powder；The composite metal powder preferred component is
By Ni, Cu, Nb and Y2O3It is mixed with according to mass percent ratio for 55%:36%:8%:1%.
4. titanium alloy according to claim 1 and stainless steel fill out powder plasma welding method, which is characterized in that described
Ni, Cu, Nb and Y2O3The purity of powder is 99.9%；The Cu Powder Particle Size is 300-400 mesh, the Nb powder, granularity 300-
400 mesh, the Y2O3Powder Particle Size is 400-500 mesh, and the Ni based powders, granularity is 250-300 mesh.
5. titanium alloy according to claim 1 and stainless steel fill out powder plasma welding method, which is characterized in that the step
When suddenly in (4) using banjo fixing butt jointing, fore-put powder filling, which is fully welded, stitches and stays reinforcement 0.5-1mm；When using lap joint, preset powder
Fill full stainless steel side list double V-groove, powder pre-set thickness 2.5-3mm in end.
6. titanium alloy according to claim 1 and stainless steel fill out powder plasma welding method, which is characterized in that the step
When suddenly in (1) using banjo fixing butt jointing, weld seam stays gap 1mm；Stainless steel is placed in above titanium alloy using when lap joint, overlap joint
Width 20-30mm.
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