CN105382398A - Wire filling electron beam welding method of titanium material and aluminum alloy material - Google Patents

Wire filling electron beam welding method of titanium material and aluminum alloy material Download PDF

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Publication number
CN105382398A
CN105382398A CN201510978154.2A CN201510978154A CN105382398A CN 105382398 A CN105382398 A CN 105382398A CN 201510978154 A CN201510978154 A CN 201510978154A CN 105382398 A CN105382398 A CN 105382398A
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welding
electron
wire
aluminium alloy
alloy
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CN105382398B (en
Inventor
王廷
李洪剑
张秉刚
冯吉才
蒋思远
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Harbin Institute of Technology Weihai
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Harbin Institute of Technology Weihai
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/0046Welding
    • B23K15/0053Seam welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/0033Preliminary treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/06Electron-beam welding or cutting within a vacuum chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/28Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286Al as the principal constituent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/18Dissimilar materials

Abstract

The invention discloses a wire filling electron beam welding method of a titanium material and an aluminum alloy material. The wire filling electron beam welding method of the titanium material and the aluminum alloy material is characterized in that when welding is conducted, the butt joint face of titanium alloy and aluminum alloy is filled with an aluminum alloy welding wire, the aluminum alloy welding wire welds the titanium alloy and the aluminum alloy together through an electron beam welding method, by introducing a wire filling welding technology in the dissimilar metal electron beam welding process of the titanium alloy and the aluminum alloy, forming of a welding seam is obviously improved, the mechanical property of the welding seam is improved, the welding defect is avoided, and connection of dissimilar metal can be completed efficiently and stably; due to the fact that electron beam wire filling welding of the titanium alloy and the aluminum alloy is conducted in vacuum, and the aluminum alloy welding wire has the metallurgical improvement effect on a welding seam molten pool, oxide inclusions can not be generated for the welding seam, producing of an intermetallic compound can be obviously inhibited simultaneously, and the substantial technical problem that in the prior art, the dissimilar metal of the titanium alloy and the aluminum alloy can not conduct reliable connection through electron beam welding is solved.

Description

The silk filling electro-beam welding method of titanium metal material and aluminum alloy materials
Technical field
The present invention relates to metal joining techniques field, specifically the silk filling electro-beam welding method of a kind of titanium metal material and aluminum alloy materials.
Background technology
Titanium alloy and aluminium alloy have the advantages such as high specific strength, preferably corrosion resisting property, can be widely used in aerospace industry etc.Adopt the composite structural member of aluminium alloy and titanium alloy can meet the needs of performance, again can be cost-saving, alleviate the weight of structure, and service life can also be extended to a certain extent at some position application rust-preventing aluminum alloy.But titanium alloy and aluminium alloy have very large difference in physics, chemical property etc., and two kinds of metal solder are melt-blended easily forms the intermetallic compound of fragility when solidifying, and crackle will be caused in welding process to produce.Use conventional welding method welding titanium alloy and rust-preventing aluminum alloy, because the metallurgical incompatibility of above-mentioned bi-material and physical property difference are greatly, weld seam can not meet the demands.Consider the little and energy density advantages of higher of registration that electron beam welding has, heat input, filler wire in welding process simultaneously, improve metallurgy condition, thus the metallurgical incompatibility made up between titanium alloy and aluminium alloy, and reduce the generation of the intermetallic compound of fragility, improve mechanical property.
Summary of the invention
The object of the invention is to solve existing welding procedure when carrying out dissimilar metal to titanium alloy and aluminium alloy and welding, due to metal metallurgy smelting incompatibility and the reason such as physical property difference is large and the problem making the mechanical property of weld seam poor, provide a kind of technique of electron beam landfilling area that utilizes to the silk filling electro-beam welding method of titanium metal material and aluminum alloy materials.
The technical solution adopted for the present invention to solve the technical problems is:
A silk filling electro-beam welding method for titanium metal material and aluminum alloy materials, described titanium alloy and aluminium alloy interface filling aluminum alloy welding wire when it is characterized in that welding, titanium alloy and aluminum alloy welding are connected together through electro-beam welding method by described aluminium alloy welding wire,
Described electro-beam welding method step is:
One, the surface of waterproof abrasive paper to titanium alloy and aluminium alloy of 800# or 600# is used to polish, by Impurity removals such as the oxide-films on surface, them are made to expose rustless pure junction to be welded, treat solder side with the non-woven fabrics being moistened with acetone afterwards and carry out wiping, then titanium alloy and aluminium alloy are fixed on the fixture in vacuum plant in the mode of docking, the gap of described titanium alloy and aluminium alloy is within the scope of 0-0.3mm, and ensure that gap direction is parallel with Electron Beam stream moving direction, then bundle point under the line of electron beam is aimed at position to be welded;
Two, be that the aluminium alloy welding wire of 0.8-1.2mm is sent from wire feeder by diameter, and deliver to Electron Beam through wire feed nozzle and flow down on the position of bundle, aluminium alloy welding wire is 1-2cm from the length that nozzle stretches out, and its length is stem elongation;
Three, inspection treats that weldment and electron beam welding welding system prepare to put in place, is then closed by vacuum chamber and vacuumizes, when the air pressure of vacuum indoor is lower than 5 × 10 -2start welding during Pa, adopt preposition wire feed to weld orientation during welding, welding wire is inserted front end, molten bath, at the uniform velocity weld with certain speed, the working depth of electron gun is 50mm.
It is 0.05-0.1% and surplus is Al that the composition of aluminium alloy welding wire of the present invention forms that Mg can be adopted to be 3%-8%, Mn is 0.1%-2%, Ti by mass percentage; Also Mg can be adopted to be 3%-8%, Mn is 0.1%-2%, Ti be 0.05-0.1%, Si be 1%-5% and surplus is Al; Si can also be adopted to be 5%-13%, Mg is 0.5-1% and surplus is Al.
The distance d that aluminium side can be partial in the position of electron beam line application point at the to be welded position of aluminium alloy welding wire of the present invention when welding is 0.1-1.5mm, be beneficial to by filling aluminum alloy welding wire, make electronic beam current by wire melting, in titanium alloy side, the aluminium alloy welding wire of fusing is sprawled at titanium alloy surface, generation soldering is reacted, at aluminum alloy side, part aluminum mother plate can melt by the heat that the aluminium alloy welding wire of fusing brings, and there is melting welding, make filling aluminum alloy welding wire can prevent titanium alloy mother metal from melting, and directly occur to answer with the aluminium alloy of fusing, not only significantly reduce the generation of hazardous compound, and, by filling aluminum alloy welding wire in welding process, improve metallurgy condition, thus the metallurgical incompatibility made up between titanium alloy and aluminium alloy, and reduce the generation of the intermetallic compound of fragility, significantly improve mechanical property.
Aluminium alloy welding wire of the present invention is when welding, and electron beam line is 5-20mA, accelerating potential 10-100kV, speed of welding 50-500mm/min, and described welding base metal thickness is 0.5-5mm, the effect that heat input is little to reach, energy density is high.
The angle of aluminium alloy welding wire of the present invention and electron beam line is 30-60 °, and the application point of electron beam line and welding wire and test plate (panel) upper surface distance h are within the scope of 0.5-2mm, reach efficiently and stably to the effect that dissimilar metal welds.
The present invention, owing to adopting above-mentioned welding method, has the following advantages:
1., by introducing filler wire welding technique to the dissimilar metal electron beam welding process of titanium alloy and aluminium alloy, significantly improving the shaping of weld seam, improving the mechanical property of weld seam, avoiding weld defect, and the connection of dissimilar metal can be completed efficiently and stably;
2. because the electron beam landfilling area of described titanium alloy and aluminium alloy carries out in a vacuum, and there is metallurgical improvement result in aluminium alloy welding wire butt welded seam molten bath, so weld seam can not generate oxide inclusions, significantly can suppress the generation of intermetallic compound simultaneously, solve dissimilar metal in prior art and do not carry out the reliable Substantial technical problem connected by electron beam welding;
3. the present invention not only can to the electron beam landfilling area of the sheet material of titanium alloy and aluminium alloy, and, can also expand to light-wall pipe or the titanium alloy of other complicated shapes and the electron beam landfilling area of aluminium alloy dissimilar metal.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of vacuum plant in the present invention.
Fig. 2 is aluminium alloy welding wire and electron beam line pose schematic diagram in welding process of the present invention.
Fig. 3 is electronic beam current application point schematic diagram of the present invention.
Reference numeral: vacuum chamber 1, fixture 2, fixture traversing carriage 3, servomotor, electron beam gun 4, welding gun traversing carriage 5, nozzle holder 6, wire feed nozzle 7, wire feeder 8, snaps 9, titanium alloy test plate (panel) mother metal 10, aluminium alloy test plate (panel) mother metal 11, aluminium alloy welding wire 12.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described:
Embodiment 1: choose TA15 titanium alloy test plate (panel) mother metal and aluminium alloy test plate (panel) mother metal carries out electron beam welding, welding step is:
1. first choose vacuum plant, vacuum plant used in the present invention comprises vacuum chamber 1, fixture 2 is provided with in described vacuum chamber 1, fixture traversing carriage 3, servomotor, electron beam gun 4, welding gun traversing carriage 5, nozzle holder 6, wire feed nozzle 7 and wire feeder 8, described fixture traversing carriage 3 and welding gun traversing carriage 5 be arranged in parallel, described fixture traversing carriage 3 upper end is fixedly connected with fixture 2, described fixture traversing carriage 3 lower end is slidably connected through horizontal slide rail and vacuum chamber 1, and through horizontal driven by servomotor, described fixture is provided with snaps 9, described welding gun traversing carriage 5 upper end is fixedly connected with electron beam gun 4, lower end is slidably connected through longitudinal slide rail and vacuum chamber 1, and drive through servo longitudinal motor, described electron beam gun 4 is positioned at two welding work pieces welded gaps being partial to be partial to aluminium side above aluminium alloy test plate (panel)distance d is 0.1mm,, be provided with nozzle holder 6 in described electron beam gun 4 upper end, nozzle holder 6 upper end is connected with wire feed nozzle 7, the bending of described wire feed nozzle 7 front end, rear corresponding with welded gaps with wire feed nozzle 7 to make aluminium alloy welding wire pass wire feeder 8,
2. the composition choosing described TA15 titanium alloy test plate (panel) mother metal consists of Al:6%, Zr:2%, Mo:1%, V:1%, impurity≤0.2% by mass percentage, surplus is Ti, thickness is 2mm, the composition of rust-preventing aluminum alloy test plate (panel) mother metal consists of by mass percentage: Si:0.4%, Fe:0.4%, Mn:0.4%, Cr:0.25%, Zn:0.25%, other impurity: 0.15%, and surplus is Al, thickness is 2mm, the surface of waterproof abrasive paper to TA15 titanium alloy test plate (panel) mother metal 10 and aluminium alloy test plate (panel) mother metal 11 of 800# or 600# is used to polish, by Impurity removals such as the oxide-films on surface, them are made to expose rustless pure junction to be welded, treat solder side with the non-woven fabrics being moistened with acetone afterwards and carry out wiping, then TA15 titanium alloy test plate (panel) mother metal 10 is fixed on fixture 2 through snaps 9 with aluminium alloy test plate (panel) mother metal 11 in the mode of docking respectively, TA15 titanium alloy test plate (panel) mother metal 10 is left 0.1mm with the gap of aluminium alloy test plate (panel) mother metal 11 junction to be welded, and, its gap direction is parallel with the line moving direction of electron beam gun, then bundle point under the line of electron beam gun is aimed at the middle part of play movement to be welded, application point and the test plate (panel) upper surface distance h of described electron beam line and welding wire are 2mm, angle α between described electron beam line and aluminium alloy welding wire is 60 °, 3. choosing diameter is 1.2mm, composition is by mass percentage: Mg is 3%-8%, Mn is 0.1%-2%, the aluminium alloy welding wire 12 of Ti to be 0.05-0.1% and surplus be Al is sent from wire feeder, and deliver to Electron Beam through wire feed nozzle and flow down on the position of bundle, aluminium alloy welding wire is 2cm from the length that nozzle stretches out, for stem elongation,
4. check that material to be welded and electron beam welding welding system prepare to put in place, then close vacuum chamber and vacuumize, when the air pressure of vacuum indoor is lower than 5 × 10 -2welding is started during Pa, preposition wire feed is adopted to weld orientation during welding, welding wire is inserted front end, molten bath, with line 15Ma, accelerating potential 50Kv, speed of welding is that the speed of 200mm/min is welded, in welding process, aluminium alloy welding wire is filled by electron-beam melting, in titanium alloy test plate (panel) mother metal side, the welding wire of fusing is sprawled at titanium alloy test plate (panel) mother metal moistened surface, sprawling cross section generation soldering reaction, at aluminum alloy side, part aluminum mother plate melts by the heat that the aluminium alloy welding wire of fusing brings, and there is melting welding, by filling aluminum alloy welding wire, place the fusing of titanium alloy test plate (panel) mother metal, and directly react with the aluminium alloy of fusing, and then titanium alloy test plate (panel) mother metal and aluminium alloy test plate (panel) mother metal are welded together, solve dissimilar metal in prior art and do not carry out the reliable Substantial technical problem connected by electron beam welding.
Embodiment 2:
1. first choose vacuum plant, vacuum plant used in the present invention comprises vacuum chamber 1, fixture 2 is provided with in described vacuum chamber 1, fixture traversing carriage 3, servomotor, electron beam gun 4, welding gun traversing carriage 5, nozzle holder 6, wire feed nozzle 7 and wire feeder 8, described fixture traversing carriage 3 and welding gun traversing carriage 5 be arranged in parallel, described fixture traversing carriage 3 upper end is fixedly connected with fixture 2, described fixture traversing carriage 3 lower end is slidably connected through horizontal slide rail and vacuum chamber 1, and through horizontal driven by servomotor, described fixture is provided with snaps 9, described welding gun traversing carriage 5 upper end is fixedly connected with electron beam gun 4, lower end is slidably connected through longitudinal slide rail and vacuum chamber 1, and drive through servo longitudinal motor, described electron beam gun 4 is positioned at two welding work pieces welded gaps and be partial tothe distance d of aluminium alloy test plate (panel) mother metal side is 0.15mm, nozzle holder 6 is provided with in described electron beam gun 4 upper end, nozzle holder 6 upper end is connected with wire feed nozzle 7, the bending of described wire feed nozzle 7 front end, rear corresponding with welded gaps with wire feed nozzle 7 to make aluminium alloy welding wire pass wire feeder 8,
2. the composition choosing described TA15 titanium alloy test plate (panel) mother metal consists of Al:6%, Zr:2%, Mo:1%, V:1%, impurity≤0.2% by mass percentage, surplus is Ti, thickness is 5mm, the composition of rust-preventing aluminum alloy test plate (panel) mother metal consists of by mass percentage: Si:0.4%, Fe:0.4%, Mn:0.5-0.8%, Cr:0.06-0.24%, Zn:0.25%, other impurity: 0.15%, and surplus is Al, thickness is 5mm, the surface of waterproof abrasive paper to TA15 titanium alloy test plate (panel) mother metal 10 and aluminium alloy test plate (panel) mother metal 11 of 600# is used to polish, by Impurity removals such as the oxide-films on surface, them are made to expose rustless pure junction to be welded, treat solder side with the non-woven fabrics being moistened with acetone afterwards and carry out wiping, then TA15 titanium alloy test plate (panel) mother metal 10 is fixed on fixture 2 through snaps 9 with aluminium alloy test plate (panel) mother metal 11 in the mode of docking respectively, TA15 titanium alloy test plate (panel) mother metal 10 is left 0.2mm with the gap of aluminium alloy test plate (panel) mother metal 11 junction to be welded, and, its gap direction is parallel with the line moving direction of electron beam gun, then bundle point under the line of electron beam gun is aimed at the middle part of play movement to be welded, application point and the test plate (panel) upper surface distance h of described electron beam line and welding wire are 0.5mm, angle α between described electron beam line and aluminium alloy welding wire is 30 °, 3. choosing diameter is 1.2mm, composition is by mass percentage: Mg is 3%-8%, Mn is 0.1%-2%, Ti is 0.05-0.1%, the aluminium alloy welding wire 12 of Si to be 1%-5% and surplus be Al is sent from wire feeder, and deliver to Electron Beam through wire feed nozzle and flow down on the position of bundle, aluminium alloy welding wire is 2cm from the length that nozzle stretches out, for stem elongation,
4. check that material to be welded and electron beam welding welding system prepare to put in place, then close vacuum chamber and vacuumize, when the air pressure of vacuum indoor is lower than 5 × 10 -2welding is started during Pa, preposition wire feed is adopted to weld orientation during welding, welding wire is inserted front end, molten bath, with line 6-18Ma, accelerating potential 20-90Kv, speed of welding is that the speed of 50-400mm/min is welded, in welding process, aluminium alloy welding wire is filled by electron-beam melting, in titanium alloy test plate (panel) mother metal side, the welding wire of fusing is sprawled at titanium alloy test plate (panel) mother metal moistened surface, sprawling cross section generation soldering reaction, at aluminum alloy side, part aluminum mother plate melts by the heat that the aluminium alloy welding wire of fusing brings, and there is melting welding, by filling aluminum alloy welding wire, place the fusing of titanium alloy test plate (panel) mother metal, and directly react with the aluminium alloy of fusing, and then titanium alloy test plate (panel) mother metal and aluminium alloy test plate (panel) mother metal are welded together, solve dissimilar metal in prior art and do not carry out the reliable Substantial technical problem connected by electron beam welding.
Embodiment 3:
1. first choose vacuum plant, vacuum plant used in the present invention comprises vacuum chamber 1, fixture 2 is provided with in described vacuum chamber 1, fixture traversing carriage 3, servomotor, electron beam gun 4, welding gun traversing carriage 5, nozzle holder 6, wire feed nozzle 7 and wire feeder 8, described fixture traversing carriage 3 and welding gun traversing carriage 5 be arranged in parallel, described fixture traversing carriage 3 upper end is fixedly connected with fixture 2, described fixture traversing carriage 3 lower end is slidably connected through horizontal slide rail and vacuum chamber 1, and through horizontal driven by servomotor, described fixture is provided with snaps 9, described welding gun traversing carriage 5 upper end is fixedly connected with electron beam gun 4, lower end is slidably connected through longitudinal slide rail and vacuum chamber 1, and drive through servo longitudinal motor, described electron beam gun 4 is positioned at two welding work pieces welded gaps and deflection deflection aluminium alloy test plate (panel) mother metalthe distance d of side is 1mm, nozzle holder 6 is provided with in described electron beam gun 4 upper end, nozzle holder 6 upper end is connected with wire feed nozzle 7, the bending of described wire feed nozzle 7 front end, rear corresponding with welded gaps with wire feed nozzle 7 to make aluminium alloy welding wire pass wire feeder 8,
2. the composition choosing described TA15 titanium alloy test plate (panel) mother metal consists of Al:6%, Zr:2%, Mo:1%, V:1%, impurity≤0.2% by mass percentage, surplus is Ti, thickness is 0.5mm, the composition of rust-preventing aluminum alloy test plate (panel) mother metal consists of by mass percentage: Si:0.4%, Fe:0.4%, Mn:0.5-0.8%, Cr:0.06-0.24%, Zn:0.25%, other impurity: 0.15%, and surplus is Al, thickness is 0.5mm, the surface of waterproof abrasive paper to TA15 titanium alloy test plate (panel) mother metal 10 and aluminium alloy test plate (panel) mother metal 11 of 800# is used to polish, by Impurity removals such as the oxide-films on surface, them are made to expose rustless pure junction to be welded, treat solder side with the non-woven fabrics being moistened with acetone afterwards and carry out wiping, then TA15 titanium alloy test plate (panel) mother metal 10 is fixed on fixture 2 through snaps 9 with aluminium alloy test plate (panel) mother metal 11 in the mode of docking respectively, TA15 titanium alloy test plate (panel) mother metal 10 is left 0.3mm with the gap of aluminium alloy test plate (panel) mother metal 11 junction to be welded, and, its gap direction is parallel with the line moving direction of electron beam gun, then bundle point under the line of electron beam gun is aimed at the middle part of play movement to be welded, application point and the test plate (panel) upper surface distance h of described electron beam line and welding wire are 1mm, angle α between described electron beam line and aluminium alloy welding wire is 45 °, 3. choosing diameter is 1.2mm, composition is by mass percentage: Si is 5%-13%, the aluminium alloy welding wire 12 of Mg to be 0.5-1% and surplus be Al is sent from wire feeder, and deliver to Electron Beam through wire feed nozzle and flow down on the position of bundle, aluminium alloy welding wire is 2cm from the length that nozzle stretches out, for stem elongation,
4. check that material to be welded and electron beam welding welding system prepare to put in place, then close vacuum chamber and vacuumize, when the air pressure of vacuum indoor is lower than 5 × 10 -2welding is started during Pa, preposition wire feed is adopted to weld orientation during welding, welding wire is inserted front end, molten bath, with line 10-15Ma, accelerating potential 30-80Kv, speed of welding is that the speed of 60-300mm/min is welded, in welding process, aluminium alloy welding wire is filled by electron-beam melting, in titanium alloy test plate (panel) mother metal side, the welding wire of fusing is sprawled at titanium alloy test plate (panel) mother metal moistened surface, sprawling cross section generation soldering reaction, at aluminum alloy side, part aluminum mother plate melts by the heat that the aluminium alloy welding wire of fusing brings, and there is melting welding, by filling aluminum alloy welding wire, place the fusing of titanium alloy test plate (panel) mother metal, and directly react with the aluminium alloy of fusing, and then titanium alloy test plate (panel) mother metal and aluminium alloy test plate (panel) mother metal are welded together, solve dissimilar metal in prior art and do not carry out the reliable Substantial technical problem connected by electron beam welding.
Embodiment 4:
1. first choose vacuum plant, vacuum plant used in the present invention comprises vacuum chamber 1, fixture 2 is provided with in described vacuum chamber 1, fixture traversing carriage 3, servomotor, electron beam gun 4, welding gun traversing carriage 5, nozzle holder 6, wire feed nozzle 7 and wire feeder 8, described fixture traversing carriage 3 and welding gun traversing carriage 5 be arranged in parallel, described fixture traversing carriage 3 upper end is fixedly connected with fixture 2, described fixture traversing carriage 3 lower end is slidably connected through horizontal slide rail and vacuum chamber 1, and through horizontal driven by servomotor, described fixture is provided with snaps 9, described welding gun traversing carriage 5 upper end is fixedly connected with electron beam gun 4, lower end is slidably connected through longitudinal slide rail and vacuum chamber 1, and drive through servo longitudinal motor, described electron beam gun 4 is positioned at two welding work pieces welded gaps and be partial tothe distance d of aluminium alloy test plate (panel) mother metal side is 1.5mm, nozzle holder 6 is provided with in described electron beam gun 4 upper end, nozzle holder 6 upper end is connected with wire feed nozzle 7, the bending of described wire feed nozzle 7 front end, rear corresponding with welded gaps with wire feed nozzle 7 to make aluminium alloy welding wire pass wire feeder 8,
2. the composition choosing described TA15 titanium alloy test plate (panel) mother metal consists of Al:6%, Zr:2%, Mo:1%, V:1%, impurity≤0.2% by mass percentage, surplus is Ti, thickness is 1mm, the composition of rust-preventing aluminum alloy test plate (panel) mother metal consists of by mass percentage: Si:0.4%, Fe:0.4%, Mn:0.4%, Cr:0.25%, Zn:0.25%, other impurity: 0.15%, and surplus is Al, thickness is 1mm, the surface of waterproof abrasive paper to TA15 titanium alloy test plate (panel) mother metal 10 and aluminium alloy test plate (panel) mother metal 11 of 800# or 600# is used to polish, by Impurity removals such as the oxide-films on surface, them are made to expose rustless pure junction to be welded, treat solder side with the non-woven fabrics being moistened with acetone afterwards and carry out wiping, then TA15 titanium alloy test plate (panel) mother metal 10 is fixed on fixture 2 through snaps 9 with aluminium alloy test plate (panel) mother metal 11 in the mode of docking respectively, TA15 titanium alloy test plate (panel) mother metal 10 is left 0mm with the gap of aluminium alloy test plate (panel) mother metal 11 junction to be welded, and, its gap direction is parallel with the line moving direction of electron beam gun, then bundle point under the line of electron beam gun is aimed at the middle part of play movement to be welded, application point and the test plate (panel) upper surface distance h of described electron beam line and welding wire are 1mm, angle α between described electron beam line and aluminium alloy welding wire is 50 °, 3. choosing diameter is 1.2mm, composition is by mass percentage: Mg is 3%-8%, Mn is 0.15%, Ti be 0.08% and surplus be that the aluminium alloy welding wire 12 of Al is sent from wire feeder, and deliver to Electron Beam through wire feed nozzle and flow down on the position of bundle, aluminium alloy welding wire is 2cm from the length that nozzle stretches out, for stem elongation,
4. check that material to be welded and electron beam welding welding system prepare to put in place, then close vacuum chamber and vacuumize, when the air pressure of vacuum indoor is lower than 5 × 10 -2welding is started during Pa, preposition wire feed is adopted to weld orientation during welding, welding wire is inserted front end, molten bath, with line 17Ma, accelerating potential 60kV, speed of welding is that the speed of 70-350mm/min is welded, in welding process, aluminium alloy welding wire is filled by electron-beam melting, in titanium alloy test plate (panel) mother metal side, the welding wire of fusing is sprawled at titanium alloy test plate (panel) mother metal moistened surface, sprawling cross section generation soldering reaction, at aluminum alloy side, part aluminum mother plate melts by the heat that the aluminium alloy welding wire of fusing brings, and there is melting welding, by filling aluminum alloy welding wire, place the fusing of titanium alloy test plate (panel) mother metal, and directly react with the aluminium alloy of fusing, and then titanium alloy test plate (panel) mother metal and aluminium alloy test plate (panel) mother metal are welded together, solve dissimilar metal in prior art and do not carry out the reliable Substantial technical problem connected by electron beam welding.
Embodiment 5:
1. first choose vacuum plant, vacuum plant used in the present invention comprises vacuum chamber 1, fixture 2 is provided with in described vacuum chamber 1, fixture traversing carriage 3, servomotor, electron beam gun 4, welding gun traversing carriage 5, nozzle holder 6, wire feed nozzle 7 and wire feeder 8, described fixture traversing carriage 3 and welding gun traversing carriage 5 be arranged in parallel, described fixture traversing carriage 3 upper end is fixedly connected with fixture 2, described fixture traversing carriage 3 lower end is slidably connected through horizontal slide rail and vacuum chamber 1, and through horizontal driven by servomotor, described fixture is provided with snaps 9, described welding gun traversing carriage 5 upper end is fixedly connected with electron beam gun 4, lower end is slidably connected through longitudinal slide rail and vacuum chamber 1, and drive through servo longitudinal motor, described electron beam gun 4 is positioned at two welding work pieces welded gaps and be partial tothe distance d of aluminium alloy test plate (panel) mother metal side is 1.2mm, nozzle holder 6 is provided with in described electron beam gun 4 upper end, nozzle holder 6 upper end is connected with wire feed nozzle 7, the bending of described wire feed nozzle 7 front end, rear corresponding with welded gaps with wire feed nozzle 7 to make aluminium alloy welding wire pass wire feeder 8,
2. the composition choosing described TA15 titanium alloy test plate (panel) mother metal consists of Al:6%, Zr:2%, Mo:1%, V:1%, impurity≤0.2% by mass percentage, surplus is Ti, thickness is 1mm, the composition of rust-preventing aluminum alloy test plate (panel) mother metal consists of by mass percentage: Si:0.4%, Fe:0.4%, Mn:0.4%, Cr:0.25%, Zn:0.25%, other impurity: 0.15%, and surplus is Al, thickness is 1mm, the surface of waterproof abrasive paper to TA15 titanium alloy test plate (panel) mother metal 10 and aluminium alloy test plate (panel) mother metal 11 of 800# or 600# is used to polish, by Impurity removals such as the oxide-films on surface, them are made to expose rustless pure junction to be welded, treat solder side with the non-woven fabrics being moistened with acetone afterwards and carry out wiping, then TA15 titanium alloy test plate (panel) mother metal 10 is fixed on fixture 2 through snaps 9 with aluminium alloy test plate (panel) mother metal 11 in the mode of docking respectively, TA15 titanium alloy test plate (panel) mother metal 10 is left 0.15mm with the gap of aluminium alloy test plate (panel) mother metal 11 junction to be welded, and, its gap direction is parallel with the line moving direction of electron beam gun, then bundle point under the line of electron beam gun is aimed at the middle part of play movement to be welded, application point and the test plate (panel) upper surface distance h of described electron beam line and welding wire are 1.5mm, angle α between described electron beam line and aluminium alloy welding wire is 40 °, 3. choosing diameter is 1.2mm, composition is by mass percentage: Mg is 4%-7%, Mn is 0.15%-2%, Ti is 0.07%, Si be 4% and surplus be that the aluminium alloy welding wire 12 of Al is sent from wire feeder, and deliver to Electron Beam through wire feed nozzle and flow down on the position of bundle, aluminium alloy welding wire is 2cm from the length that nozzle stretches out, for stem elongation,
4. check that material to be welded and electron beam welding welding system prepare to put in place, then close vacuum chamber and vacuumize, when the air pressure of vacuum indoor is lower than 5 × 10 -2welding is started during Pa, preposition wire feed is adopted to weld orientation during welding, welding wire is inserted front end, molten bath, with line 20Ma, accelerating potential 100kV, speed of welding is that the speed of 500mm/min is welded, in welding process, aluminium alloy welding wire is filled by electron-beam melting, in titanium alloy test plate (panel) mother metal side, the welding wire of fusing is sprawled at titanium alloy test plate (panel) mother metal moistened surface, sprawling cross section generation soldering reaction, at aluminum alloy side, part aluminum mother plate melts by the heat that the aluminium alloy welding wire of fusing brings, and there is melting welding, by filling aluminum alloy welding wire, place the fusing of titanium alloy test plate (panel) mother metal, and directly react with the aluminium alloy of fusing, and then titanium alloy test plate (panel) mother metal and aluminium alloy test plate (panel) mother metal are welded together, solve dissimilar metal in prior art and do not carry out the reliable Substantial technical problem connected by electron beam welding.
The present invention, owing to adopting above-mentioned welding method, has the following advantages:
1. by introducing filler wire welding technique to the dissimilar metal electron beam welding process of TA15 titanium alloy and rust-preventing aluminum alloy, remarkable improve weld seam shaping, the mechanical property that improves weld seam, avoid weld defect, and the connection of dissimilar metal can be completed efficiently and stably;
2. because the electron beam landfilling area of described TA15 titanium alloy and rust-preventing aluminum alloy carries out in a vacuum, and there is metallurgical improvement result in aluminium alloy welding wire butt welded seam molten bath, so weld seam can not generate oxide inclusions, significantly can suppress the generation of intermetallic compound simultaneously, solve dissimilar metal in prior art and do not carry out the reliable Substantial technical problem connected by electron beam welding;
3. the present invention not only can to the electron beam landfilling area of the sheet material of TA15 titanium alloy and rust-preventing aluminum alloy, and, can also expand to light-wall pipe or the TA15 titanium alloy of other complicated shapes and the electron beam landfilling area of rust-preventing aluminum alloy dissimilar metal.

Claims (6)

1. the silk filling electro-beam welding method of a titanium metal material and aluminum alloy materials, described titanium alloy and aluminium alloy interface filling aluminum alloy welding wire when it is characterized in that welding, titanium alloy and aluminum alloy welding are connected together through electro-beam welding method by described aluminium alloy welding wire
Described electro-beam welding method step is:
One, the surface of waterproof abrasive paper to titanium alloy and aluminium alloy of 800# or 600# is used to polish, by Impurity removals such as the oxide-films on surface, them are made to expose rustless pure junction to be welded, treat solder side with the non-woven fabrics being moistened with acetone afterwards and carry out wiping, then titanium alloy and aluminium alloy are fixed on the fixture in vacuum plant in the mode of docking, the gap of described titanium alloy and aluminium alloy is within the scope of 0-0.3mm, and ensure that gap direction is parallel with the line moving direction of electron beam, then bundle point under the line of electron beam is aimed at the middle part of play movement to be welded,
Two, be that the aluminium alloy welding wire of 0.8-1.2mm is sent from wire feeder by diameter, and deliver to Electron Beam through wire feed nozzle and flow down on the position of bundle, aluminium alloy welding wire is 1-2cm from the length that nozzle stretches out, and its length is stem elongation;
Three, inspection treats that weldment and electron beam welding welding system prepare to put in place, is then closed by vacuum chamber and vacuumizes, when the air pressure of vacuum indoor is lower than 5 × 10 -2start welding during Pa, adopt preposition wire feed to weld orientation during welding, welding wire is inserted front end, molten bath, at the uniform velocity weld with certain speed, the working depth of electron gun is 50mm.
2. the silk filling electro-beam welding method of a kind of titanium metal material according to claim 1 and aluminum alloy materials, it is characterized in that the composition of described aluminium alloy welding wire forms that to adopt Mg be 3%-8%, Mn to be 0.1%-2%, Ti be 0.05-0.1% and surplus is by mass percentage Al; Or to adopt Mg be 3%-8%, Mn to be 0.1%-2%, Ti be 0.05-0.1%, Si be 1%-5% and surplus is Al; Or adopting Si be 5%-13%, Mg to be 0.5-1% and surplus is Al.
3. a kind of titanium metal material according to claim 1 or 2 or 3 and the silk filling electro-beam welding method of aluminum alloy materials, it is characterized in that the distance d that aluminium side can be partial in the position of electron beam line application point at the to be welded position of described aluminium alloy welding wire when welding is 0.1-1.5mm, by filling aluminum alloy welding wire, make electronic beam current by wire melting, in titanium alloy side, the aluminium alloy welding wire of fusing is sprawled at titanium alloy surface, generation soldering is reacted, at aluminum alloy side, part aluminum mother plate melts by the heat that the aluminium alloy welding wire of fusing brings, and there is melting welding, filling aluminum alloy welding wire is made to prevent titanium alloy mother metal from melting, and directly occur to answer with the aluminium alloy of fusing.
4. the silk filling electro-beam welding method of a kind of titanium metal material according to claim 3 and aluminum alloy materials, it is characterized in that described aluminium alloy welding wire is when welding, electron beam line is 5-20mA, accelerating potential 10-100kV, speed of welding 50-800mm/min, described welding base metal thickness is 0.5-5mm.
5. the silk filling electro-beam welding method of a kind of titanium metal material according to claim 4 and aluminum alloy materials, it is characterized in that the angle of described aluminium alloy welding wire and electron beam line is 30-60 °, and the application point of electron beam line and welding wire and test plate (panel) upper surface distance h are within the scope of 0.5-2mm.
6. the silk filling electro-beam welding method of a kind of titanium metal material according to claim 5 and aluminum alloy materials, is characterized in that described aluminium alloy welding wire is 1-2cm from the length that nozzle stretches out.
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