CN102785020A - Electron beam filler wire welding method of TC4 titanium alloy and QCr0.8 copper alloy - Google Patents
Electron beam filler wire welding method of TC4 titanium alloy and QCr0.8 copper alloy Download PDFInfo
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- CN102785020A CN102785020A CN2012103025834A CN201210302583A CN102785020A CN 102785020 A CN102785020 A CN 102785020A CN 2012103025834 A CN2012103025834 A CN 2012103025834A CN 201210302583 A CN201210302583 A CN 201210302583A CN 102785020 A CN102785020 A CN 102785020A
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 67
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 64
- 238000003466 welding Methods 0.000 title claims abstract description 58
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 36
- 239000000945 filler Substances 0.000 title abstract 2
- 229910000756 V alloy Inorganic materials 0.000 claims abstract description 19
- -1 copper-vanadium Chemical compound 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims description 25
- 239000012535 impurity Substances 0.000 claims description 24
- 239000010949 copper Substances 0.000 claims description 16
- 238000005476 soldering Methods 0.000 claims description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound 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CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 238000005296 abrasive Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000003032 molecular docking Methods 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 230000036314 physical performance Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
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- 230000002950 deficient Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
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- 230000000704 physical effect Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
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- 229910045601 alloy Inorganic materials 0.000 description 1
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- 239000010974 bronze Substances 0.000 description 1
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Abstract
The invention discloses an electron beam filler wire welding method of a TC4 titanium alloy and a QCr0.8 copper alloy, which relates to a welding method of the TC4 titanium alloy and the QCr0.8 copper alloy, to solve the problem that mechanical property requirement of a welding line cannot be met because of metallurgy incompatibility and physical performance mismatching in the prior art in which common welding process is applied between different materials of the TC4 titanium alloy and the QCr0.8 copper alloy. The welding method comprises the following steps: firstly, preparing before welding; secondly, sending a copper-vanadium alloy welding wire from a wire feeding mechanism to a lower beam spot position of an electron beam through a wire feeding nozzle; and thirdly, accomplishing welding of the TC4 titanium alloy and the QCr0.8 copper alloy under the vacuum condition. The welding line obtained by using the method disclosed by the invention is smooth, level, continuous and defect-free, and is as high as 315MPa in tensile strength; and the welding method disclosed by the invention can be applied to the field of welding engineering of different materials.
Description
Technical field
The present invention relates to TC4 titanium alloy and QCr0.8 copper alloy welding method.
Background technology
The TC4 titanium alloy has a series of good performances because of it, is widely used in Aero-Space, petrochemical industry, automobile, shipbuilding and medicine and other fields like corrosion resistance, density is low, specific strength is high, good toughness and welding performance.And the QCr0.8 copper alloy has favorable conductive, heat conductivility, mechanical property and hear resistance, is widely used in fields such as motor steering gear, resistance welding electrode, high-temperature electric conduction wear parts at present.The TC4 titanium alloy with effective connection of QCr0.8 copper alloy foreign material can satisfy thermal conductivity, wearability, corrosion proof requirement, can satisfy the requirement of high-strength light again, will gather around in fields such as Aero-Space, shipbuilding, automobiles and have broad application prospects.Use conventional welding procedure to weld the different alloys material, because metal metallurgy smelting incompatibility and physical property do not match and can't satisfy the weld properties requirement.
Summary of the invention
The present invention does not match owing to metal metallurgy smelting incompatibility and physical property will solve existing TC4 titanium alloy and QCr0.8 copper alloy foreign material and use conventional welding procedure the time and the problem that can't satisfy the weld properties requirement proposes the electron beam silk filling soldering method of TC4 titanium alloy and QCr0.8 copper alloy.
TC4 titanium alloy among the present invention and the electron beam of QCr0.8 copper alloy silk filling soldering method carry out according to the following steps:
One, with 600# or 800# abrasive paper for metallograph TC4 titanium alloy and QCr0.8 copper alloy surface are polished, make them expose rustless surface to be welded, with acetone surface to be welded is wiped clean then; Surface to be welded with TC4 titanium alloy and QCr0.8 copper alloy is fixed on the lifting platform with docking mode again; The gap of two surfaces to be welded is 0.1mm ~ 0.3mm, and through moving the following bundle point aligning joint to be welded center of the electron beam that numerical control table, NC table sends electron gun, wherein the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity≤0.2%; Surplus is Ti; The percentage composition of QCr0.8 copper alloy quality is Cr:0.4% ~ 0.7%, impurity≤0.8%, and surplus is Cu;
Two, be the copper vanadium alloy welding wire of Φ 1.2mm is delivered to electron beam through the wire feed nozzle from wire feeder following bundle point position with diameter; Stem elongation; Be the length that copper vanadium alloy welding wire stretches out the wire feed nozzle outward; Be 3cm, wherein the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.0% ~ 3.5%, Mo:4.0%, Mn:2.0%, impurity 0 ~ 0.5%, and surplus is Cu;
Three, close vacuum chamber and vacuumizing, atmospheric pressure is lower than 5 * 10 in vacuum chamber
-2Begin welding during Pa, the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 30 ° ~ 60 °, and preposition wire feed weldering orientation is adopted in the weldering of electron beam centering; Welding wire directly inserts the molten bath front end, is 100mm/min with the speed of welding, is soldered to the other end from the end in the gap of two surfaces to be welded; Accomplish the welding of TC4 titanium alloy and QCr0.8 copper alloy; The accelerating potential 60KV of its electron gun, focus current are 460mA ~ 510mA, and electronic beam current is 5mA ~ 25mA; Wire feed rate is 160mm/min ~ 180mm/min, and working depth is 100mm ~ 300mm.
The present invention includes following beneficial effect:
1, in the dissimilar metal electron beam welding process, introduces with technological stability and the high efficiency that can effectively improve appearance of weld, elimination weld defect, improve welding process of weldering silk filling;
2, the present invention adopts electron beam with the real-time silk filling mode of weldering, through attitude position between tow to and the technological parameter Coupling Control realized that successfully the high-quality and high-efficiency of titanium alloy and copper alloy foreign material welds;
3, effectively suppressed the generation of intermetallic compound, obtained smooth, smooth, the continuous weld seam of defective such as pore-free, crackle again, tensile strength reaches more than 70% of QCr0.8 copper alloy mother metal, is 280Mpa ~ 315Mpa.
Description of drawings
Fig. 1 is electron beam silk filling welding structure sketch map among the present invention;
Fig. 2 is the SEM figure of TC4 titanium alloy and QCr0.8 copper alloy welding face fracture in the experiment one.
The specific embodiment
Technical scheme of the present invention is not limited to the following cited specific embodiment, also comprises the combination in any between each specific embodiment.
The specific embodiment one: the electron beam of TC4 titanium alloy and QCr0.8 copper alloy silk filling soldering method carries out according to the following steps in this embodiment:
One, with 600# or 800# abrasive paper for metallograph TC4 titanium alloy and QCr0.8 copper alloy surface are polished, make them expose rustless surface to be welded, with acetone surface to be welded is wiped clean then; Surface to be welded with TC4 titanium alloy and QCr0.8 copper alloy is fixed on the lifting platform with docking mode again; The gap of two surfaces to be welded is 0.1mm ~ 0.3mm, and through moving the following bundle point aligning joint to be welded center of the electron beam that numerical control table, NC table sends electron gun, wherein the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity≤0.2%; Surplus is Ti; The percentage composition of QCr0.8 copper alloy quality is Cr:0.4% ~ 0.7%, impurity≤0.8%, and surplus is Cu;
Two, be the copper vanadium alloy welding wire of Ф 1.2mm is delivered to electron beam through the wire feed nozzle from wire feeder following bundle point position with diameter; Stem elongation; Be the length that copper vanadium alloy welding wire stretches out the wire feed nozzle outward; Be 3cm, wherein the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.0% ~ 3.5%, Mo:4.0%, Mn:2.0%, impurity 0 ~ 0.5%, and surplus is Cu;
Three, close vacuum chamber and vacuumizing, atmospheric pressure is lower than 5 * 10 in vacuum chamber
-2Begin welding during Pa, the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 30 ° ~ 60 °, and preposition wire feed weldering orientation is adopted in the weldering of electron beam centering; Welding wire directly inserts the molten bath front end, is 100mm/min with the speed of welding, is soldered to the other end from the end in the gap of two surfaces to be welded; Accomplish the welding of TC4 titanium alloy and QCr0.8 copper alloy; The accelerating potential 60KV of its electron gun, focus current are 460mA ~ 510mA, and electronic beam current is 5mA ~ 25mA; Wire feed rate is 160mm/min ~ 180mm/min, and working depth is 100mm ~ 300mm.
The present invention includes following beneficial effect:
1, in the dissimilar metal electron beam welding process, introduces with technological stability and the high efficiency that can effectively improve appearance of weld, elimination weld defect, improve welding process of weldering silk filling;
2, the present invention adopts electron beam with the real-time silk filling mode of weldering, through attitude position between tow to and the technological parameter Coupling Control realized that successfully the high-quality and high-efficiency of titanium alloy and copper alloy foreign material welds;
3, effectively suppressed the generation of intermetallic compound, obtained smooth, smooth, the continuous weld seam of defective such as pore-free, crackle again, tensile strength reaches more than 70% of QCr0.8 copper alloy mother metal, is 280Mpa ~ 315Mpa.
The specific embodiment two: what this embodiment and the specific embodiment one were different is: the gap of two surfaces to be welded is 0.2mm in the step 1.Other step is identical with the specific embodiment one with parameter.
The specific embodiment three: what this embodiment and the specific embodiment one were different is: the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity 0.05% ~ 0.15% in the step 1; Surplus is Ti; The percentage composition of QCr0.8 copper alloy quality is Cr:0.5% ~ 0.6%; Impurity: 0.1% ~ 0.5%, surplus is Cu.Other step is identical with the specific embodiment one with parameter.
The specific embodiment four: what this embodiment and the specific embodiment one were different is: the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity in the step 1: 0.1% and Ti:90.2%; The percentage composition of QCr0.8 copper alloy quality is Cr:0.55%; Impurity: 0.3%, Cu:99.15%.Other step is identical with the specific embodiment one with parameter.
The specific embodiment five: what this embodiment was different with one of specific embodiment one to four is: the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.2% ~ 3.4%, Mo:4.0%, Mn:2.0%, impurity 0.1% ~ 0.4% in the step 2, and surplus is Cu.Other step is identical with the specific embodiment one with parameter.
The specific embodiment six: what this embodiment was different with one of specific embodiment one to four is: the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.3%, Mo:4.0%, Mn:2.0%, impurity 0.3% and Cu:60.4% in the step 2.Other step is identical with the specific embodiment one with parameter.
The specific embodiment seven: what this embodiment was different with one of specific embodiment one to six is: the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 60 ° in the step 3; Focus current is 466mA; Electronic beam current is 21mA ~ 24mA; Wire feed rate is 176mm/min ~ 179mm/min, and working depth is 300mm.Other step is identical with one of specific embodiment one to six with parameter.
The specific embodiment eight: what this embodiment was different with one of specific embodiment one to six is: the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 50 ° in the step 3; Focus current is 473mA; Electronic beam current is 16mA ~ 20mA; Wire feed rate is 171mm/min ~ 175mm/min, and working depth is 250mm.Other step is identical with one of specific embodiment one to six with parameter.
The specific embodiment nine: what this embodiment was different with one of specific embodiment one to six is: the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 40 ° in the step 3; Focus current is 482mA; Electronic beam current is 11mA ~ 15mA; Wire feed rate is 166mm/min ~ 170mm/min, and working depth is 200mm.Other step is identical with one of specific embodiment one to six with parameter.
The specific embodiment ten: what this embodiment was different with one of specific embodiment one to six is: the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 30 ° in the step 3; Focus current is 500mA; Electronic beam current is 6mA ~ 10mA; Wire feed rate is 161mm/min ~ 165mm/min, and working depth is 150mm.Other step is identical with one of specific embodiment one to six with parameter.
For verifying that beneficial effect of the present invention has carried out following experiment:
Test the structure of used electron beam silk filling weldering and see Fig. 1: 1 is electron gun, and 2 is vacuum chamber, and 3 is the TC4 titanium alloy, and 4 is lifting platform; 5 is numerical control table, NC table, and 6 is the wire feed nozzle, and 7 is nozzle holder; 8 bronze medal vanadium alloy welding wires, 9 is wire feeder, 10 is the QCr0.8 copper alloy.
Experiment one: the electron beam silk filling soldering method of TC4 titanium alloy and QCr0.8 copper alloy carries out according to the following steps:
One, with the 600# abrasive paper for metallograph TC4 titanium alloy and QCr0.8 copper alloy surface are polished; Make them expose rustless surface to be welded, with acetone surface to be welded is wiped clean then, the surface to be welded with TC4 titanium alloy and QCr0.8 copper alloy is fixed on the lifting platform with docking mode again; The gap of two surfaces to be welded is 0.2mm; Through moving the following bundle point aligning joint to be welded center of the electron beam that numerical control table, NC table sends electron gun, wherein the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity: 0.1% and Ti:90.2%, and the percentage composition of QCr0.8 copper alloy quality is Cr:0.55%; Impurity: 0.3%, Cu:99.15%;
Two, be the copper vanadium alloy welding wire of Φ 1.2mm is delivered to copper vanadium alloy welding wire through the wire feed nozzle electron beam from wire feeder following bundle point position with diameter; Stem elongation; Be the length of the overhanging copper vanadium alloy welding wire of wire feed nozzle; Be 3cm, wherein the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.3%, Mo:4.0%, Mn:2.0%, impurity: 0.3% and Cu:60.4%;
Three, close vacuum chamber and vacuumizing, atmospheric pressure is lower than 5 * 10 in vacuum chamber
-2Begin welding during Pa, the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 60 °, and preposition wire feed weldering orientation is adopted in the weldering of electron beam centering; Welding wire directly inserts the molten bath front end, is 100mm/min with the speed of welding, is soldered to the other end from the end in the gap of two surfaces to be welded; Accomplish the welding of TC4 titanium alloy and QCr0.8 copper alloy; The accelerating potential 60KV of its electron gun, focus current are 466mA, and electronic beam current is 22mA; Wire feed rate is 178mm/min, and working depth is 300mm.
Fig. 2 is the SEM figure of TC4 titanium alloy and QCr0.8 copper alloy welding face fracture in the experiment one; Light-colored part is the QCr0.8 copper alloy among the figure; Dark part is the TC4 titanium alloy; Can find out that the TC4 titanium alloy/QCr0.8 copper alloy joint surface that is obtained is smooth, smooth, continuous, defectives such as pore-free, crackle in the weld seam.Reach more than 70% of QCr0.8 copper alloy mother metal, be 280Mpa ~ 315Mpa through detecting TC4 titanium alloy/QCr0.8 copper alloy joint tensile strength.
Claims (10)
- The soldering method 1.TC4 the electron beam of titanium alloy and QCr0.8 copper alloy fills silk is characterized in that it realizes through following steps:One, with 600# or 800# abrasive paper for metallograph TC4 titanium alloy and QCr0.8 copper alloy surface are polished, make them expose rustless surface to be welded, with acetone surface to be welded is wiped clean then; Surface to be welded with TC4 titanium alloy and QCr0.8 copper alloy is fixed on the lifting platform with docking mode again; The gap of two surfaces to be welded is 0.1mm ~ 0.3mm, and through moving the following bundle point aligning joint to be welded center of the electron beam that numerical control table, NC table sends electron gun, wherein the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity≤0.2%; Surplus is Ti; The percentage composition of QCr0.8 copper alloy quality is Cr:0.4% ~ 0.7%, impurity≤0.8%, and surplus is Cu;Two, be the copper vanadium alloy welding wire of Φ 1.2mm is delivered to electron beam through the wire feed nozzle from wire feeder following bundle point position with diameter; Stem elongation; Be the length that copper vanadium alloy welding wire stretches out the wire feed nozzle outward; Be 3cm, wherein the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.0% ~ 3.5%, Mo:4.0%, Mn:2.0%, impurity 0 ~ 0.5%, and surplus is Cu;Three, close vacuum chamber and vacuumizing, atmospheric pressure is lower than 5 * 10 in vacuum chamber -2Begin welding during Pa, the common upper surface angulation of adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 30 ° ~ 60 °, and preposition wire feed weldering orientation is adopted in the weldering of electron beam centering; Welding wire directly inserts the molten bath front end, is 100mm/min with the speed of welding, is soldered to the other end from the end in the gap of two surfaces to be welded; Accomplish the welding of TC4 titanium alloy and QCr0.8 copper alloy; The accelerating potential 60KV of its electron gun, focus current are 460mA ~ 510mA, and electronic beam current is 5mA ~ 25mA; Wire feed rate is 160mm/min ~ 180mm/min, and working depth is 100mm ~ 300mm.
- 2. the electron beam silk filling soldering method of TC4 titanium alloy as claimed in claim 1 and QCr0.8 copper alloy, the gap that it is characterized in that two surfaces to be welded in the step 1 is 0.2mm.
- 3. the electron beam silk filling soldering method of TC4 titanium alloy as claimed in claim 1 and QCr0.8 copper alloy; It is characterized in that the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity 0.05% ~ 0.15% in the step 1; Surplus is Ti; The percentage composition of QCr0.8 copper alloy quality is Cr:0.5% ~ 0.6%, impurity: 0.1% ~ 0.5%, and surplus is Cu.
- 4. the electron beam silk filling soldering method of TC4 titanium alloy as claimed in claim 1 and QCr0.8 copper alloy; It is characterized in that the percentage composition of TC4 titanium alloy quality is Al:6.2%, V:3.5%, impurity in the step 1: 0.1% and Ti:90.2%; The percentage composition of QCr0.8 copper alloy quality is Cr:0.55%; Impurity: 0.3%, Cu:99.15%.
- 5. like the electron beam of each described TC4 titanium alloy and QCr0.8 copper alloy in the claim 1 to 4 soldering method that fills silk; It is characterized in that the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.2% ~ 3.4%, Mo:4.0%, Mn:2.0%, impurity 0.1% ~ 0.4% in the step 2, surplus is Cu.
- 6. like the electron beam silk filling soldering method of each described TC4 titanium alloy and QCr0.8 copper alloy in the claim 1 to 4, it is characterized in that the percentage composition of copper vanadium alloy welding wire quality is V:30%, Ni:3.3%, Mo:4.0%, Mn:2.0%, impurity 0.3% and Cu:60.4% in the step 2.
- 7. the electron beam silk filling soldering method of TC4 titanium alloy as claimed in claim 5 and QCr0.8 copper alloy; The common upper surface angulation that it is characterized in that in the step 3 adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 60 °; Focus current is 466mA; Electronic beam current is 21mA ~ 24mA, and wire feed rate is 176mm/min ~ 179mm/min, and working depth is 300mm.
- 8. the electron beam silk filling soldering method of TC4 titanium alloy as claimed in claim 5 and QCr0.8 copper alloy; The common upper surface angulation that it is characterized in that in the step 3 adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 50 °. focus current is 473mA; Electronic beam current is 16mA ~ 20mA; Wire feed rate is 171mm/min ~ 175mm/min, and working depth is 250mm.
- 9. the electron beam silk filling soldering method of TC4 titanium alloy as claimed in claim 5 and QCr0.8 copper alloy; The common upper surface angulation that it is characterized in that in the step 3 adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 40 °; Focus current is 482mA; Electronic beam current is 11mA ~ 15mA, and wire feed rate is 166mm/min ~ 170mm/min, and working depth is 200mm.
- 10. the electron beam silk filling soldering method of TC4 titanium alloy as claimed in claim 5 and QCr0.8 copper alloy; The common upper surface angulation that it is characterized in that in the step 3 adjustment wire feed nozzle and TC4 titanium alloy and QCr0.8 copper alloy is 30 °; Focus current is 500mA; Electronic beam current is 6mA ~ 10mA, and wire feed rate is 161mm/min ~ 165mm/min, and working depth is 150mm.
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