CN102489841A - Alloy powder filling tungsten argon arc welding method for aluminum alloys - Google Patents
Alloy powder filling tungsten argon arc welding method for aluminum alloys Download PDFInfo
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- CN102489841A CN102489841A CN2011103768921A CN201110376892A CN102489841A CN 102489841 A CN102489841 A CN 102489841A CN 2011103768921 A CN2011103768921 A CN 2011103768921A CN 201110376892 A CN201110376892 A CN 201110376892A CN 102489841 A CN102489841 A CN 102489841A
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- 239000000843 powder Substances 0.000 title claims abstract description 102
- 238000003466 welding Methods 0.000 title claims abstract description 94
- 239000000956 alloy Substances 0.000 title claims abstract description 58
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 39
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 34
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 38
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 16
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 13
- 229910052721 tungsten Inorganic materials 0.000 claims description 13
- 239000010937 tungsten Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 11
- 229910052786 argon Inorganic materials 0.000 claims description 9
- 238000010891 electric arc Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000003019 stabilising effect Effects 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 2
- 229910000861 Mg alloy Inorganic materials 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 5
- 239000003381 stabilizer Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000004224 protection Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 230000004927 fusion 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
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 238000004857 zone melting Methods 0.000 description 1
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- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a tungsten argon arc welding method, which is applied to aluminum alloy materials and uses alloy powder as welding and filling materials. Besides aluminum powder, the aluminum base alloy powder used in the method further comprises an active powder component and an arc stabilizer powder component. The aluminum base alloy powder is added into welding lines of the aluminum alloy materials to be welded by means of automatic filling, homogeneous materials can be welded, dissimilar materials can also be welded, and the technical problems of low welding efficiency and large air hole inclination in the process of tungsten argon arc welding can be solved, so that high-quality welding joints are obtained.
Description
Technical field
The alloy powder that the present invention relates to a kind of aluminium alloy is filled tungsten argon arc welding method, is applicable to the welding of aluminium and aluminum alloy materials.
Background technology
Aluminium and aluminium alloy are because of plurality of advantages such as it has good anti-corrosion, higher specific strength, is prone to shape, nonmagnetic, no low-temperature transformation, conduction and thermal conductivity height; Make aluminium alloy be widely used in fields such as Aeronautics and Astronautics, automobile, locomotive, machine-building, boats and ships, chemical industry and national defense and military, have extremely important using value and wide application prospect.
Tungsten argon arc welding method is a kind of melt welding method that is usually used in aluminum alloy materials, usually has following problem when adopting conventional tungsten argon arc soldering method welding aluminum alloy:
1, welding efficiency is low, and fusion penetration is little.Because tungsten electrode loaded current limited in one's ability, and free arc shape comparatively expands, and the power density of electric arc is less, makes the weld penetration of formation shallow, and speed of welding and deposition efficiency are not high, and production efficiency is lower when welding cut deal.
2, the pore tendency is big.The liquid molten bath of aluminium and aluminium alloy is easy to absorb gas, and a large amount of hydrogen that at high temperature fuse into fast have little time to separate out in cooling and the process of setting and accumulate in and form pore in the weld seam at postwelding.The protective gas argon gas that the argon tungsten-arc welding of conventional no packing material is adopted does not have deoxidation and dehydrogenation effect, and welding procedure is responsive to pore.
When 3, adopting the automatic feeding welding, wire feed system is comparatively complicated, and the wire feed required precision is higher; When adopting the welding of manual wire feed, wire feed inefficiency, continuous welding production that can not long weld seam.
The problems referred to above to conventional argon tungsten-arc welding; Press for a kind of high efficiency argon arc welding method that can realize automatic welding; With the lower or close deficiency that remedies conventional tungsten argon arc welding method originally that produces, conventional argon arc welding method is formed good replenishing.
Summary of the invention
The objective of the invention is to the problem that exists to conventional argon arc welding of tungsten, a kind of easy enforcement is provided, have higher welding efficiency, and the pore tendency is less, make the alloy powder of the aluminium alloy that welding quality is improved fill tungsten argon arc welding method.
To achieve these goals, the present invention takes following technical scheme:
A kind of alloy powder of aluminium alloy is filled tungsten argon arc welding method, carries out according to the following steps:
(1) for use with containing in powder feeding mechanism after the alloy powder material drying;
(2) calibration tungsten argon arc welding gun and powder feeding mechanism powder-feeding nozzle centering;
(3) powder feeding mechanism shifts to an earlier date powder feeding, under gas pressure, makes alloy powder from the stable ejection of powder-feeding nozzle;
(4) the tungsten argon arc welding gun is supplied gas in advance and is protected zone to be welded, and the electric arc that ignites then welds;
(5) after zone welding to be welded is accomplished, stop the alloy powder injection and send to, blow-out, the tungsten argon arc welding gun lags behind and stops the supple of gas or steam, and welding finishes, and weldment cools off naturally.
Described alloy powder adopts argon gas to send to as working gas is auxiliary, and the powder feeding gas circuit is independent of the inert protective gas gas circuit when welding.
Said alloy powder as packing material is aluminium base powder, wherein contains active component and stabilising arc composition that total amount is not less than 5% quality percentage composition, and active component is Cr
2O
3, MnO
2, CuO, Ti
2O
3In at least a, the stabilising arc composition is TiO
2, CaF
2In at least a, active component and stabilising arc composition are prepared according to the 6:4 part by weight.
Said step (2) calibration tungsten electrode with the specific practice of powder-feeding nozzle centering is, makes that to spray the powder feeding axis direction crossing with the extended line of tungsten electrode, and according to the incidence angle of 30 °～60 ° of the difference formation of welding procedure, final alignment is in workpiece position to be welded.
Described alloy powder can adopt the mode of filling automatically to add in the aluminum alloy materials weld seam to be welded by powder feeding mechanism, also can adopt the mode that presets before the weldering to realize the filling of alloy powder.
Said powder feeding working gas flow is 3～8 liters of per minutes, and powder sending quantity is per minute 150～350 grams.
Innovation of the present invention is to adopt alloy powder as packing material, realizes high efficiency, the welding of high-quality tungsten argon arc.In order to realize this goal; Its key problem in technology is: through in alloy powder, adding active component; The alloy powder fusing back and the molten bath liquid phase surface tension of the aluminum alloy materials formation of fusing are minimized; Help avoiding the metal liquid phase to form pellets at face of weld, thereby wetting and spreading forms filling effect in the welding position, appearance of weld is good; Through in alloy powder, adding the stabilising arc composition, make the welding arc stablility burning, help steadily carrying out of welding process, thereby obtain the high-quality weld seam; Through the position of calibration tungsten argon arc welding gun and powder feeding mechanism nozzle, make arc energy concentrate the position to be welded that acts on material exactly, make the alloy powder inserts accurately send into zone melting to be welded and participation formation weld seam simultaneously.Under above-mentioned key technology condition, alloy powder is as the auxiliary appearance of weld process of welding filling material, thus acquisition high-quality Al alloy weld seam.
Its system forms as shown in Figure 1, and operation principle is as shown in Figure 2.Except the source of welding current 7 of conventional argon tungsten-arc welding, outside protection gas bottle 5 and the welding gun 4, system forms and also comprises powder feeding mechanism 1, powder feeding work gas bottle 6 and powder-feeding nozzle 3.Alloy powder adds to after the powder feeding mechanism 1; Under the gas pressure of powder feeding working gas 15, spray and go out from powder-feeding nozzle 3 with certain speed, form the alloyed powder later and decadent stage of a school of thought 13 with certain straight and upright property; Under the heat effect of electric arc thermal source 12; The alloyed powder later and decadent stage of a school of thought 13 melts rapidly, and combines together with base metals, finally forms weld seam 11.In welding process, protective gas 14 and the powder feeding working gas 15 common inert atmosphere protections that form welding region.For guaranteeing the concentrated heating effect of 12 pairs of alloyed powder later and decadent stage of a school of thought 13 of electric arc thermal source and workpiece 2; Must calibration tungsten electrode 8 before weldering with powder-feeding nozzle 3 to neutrality; The extended line that sprays powder feeding axis direction and tungsten electrode 8 is intersected; And forming 30 °～60 ° incidence angle according to the difference of welding procedure, final alignment is in workpiece 2 positions to be welded.
The powder of the aluminium alloy that the present invention proposes is filled tungsten argon arc welding method under the prerequisite that does not increase the additional technique procedure; Can obtain good quality solder joints; Thereby can realize high-quality, the welded and high efficient of aluminium and aluminum alloy materials; Be that aluminium alloy is welded the abundant of processing method and replenishes, compare that this method specifically has the following advantages and effect with conventional tungsten argon arc welding method:
1, welding penetration is big, and deposition efficiency is high, and welding production efficiency is improved, and is applicable to plate sheet welding, and is equally applicable to the multilayer filling weldering of intermediate gauge aluminum alloy materials.
2, the metallurgy action of alloy powder composition reduces aluminum alloy materials welding pore tendency, helps improving the density of weld seam, thereby obtains the high-quality weld seam.
3, powder feeding mechanism is simple, does not increase extra soldered production cost and additional technique procedure, not only can be used for semi-automatic welding, is applicable to that also the long weld seam continuous welding of full-automatic welding is produced, and technology is flexible, can satisfy the demand of common product.
4, the welding work pieces assembly precision is required to reduce, and reduced sensitiveness, have the scope of application of comparatively wide model installation time crack, centering.
Description of drawings
Fig. 1 is that the alloy powder of aluminium alloy is filled tungsten argon arc welding system composition sketch map.
Fig. 2 is that the alloy powder of aluminium alloy is filled tungsten argon arc welding operation principle sketch map.
Fig. 3 is embodiment 1 an automatic powder feeding welding procedure sketch map.
Fig. 4 is that embodiment 2 presets alloy powder welding procedure sketch map.
Among the figure: 1 powder feeding mechanism, 2 workpiece, 3 powder-feeding nozzles, 4 welding guns, 5 protection gas bottles, 6 powder feeding work gas bottles, 7 sources of welding current, 8 tungsten electrodes, 9 torch necks, 10 clamping mechanisms, 11 weld seams, 12 electric arc thermals source, the 13 alloyed powder later and decadent stage of a school of thought, 14 protective gas, 15 powder feeding working gas, 16 grooves, 17 preset alloy powder.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1: as shown in Figure 3, Al alloy parts 2 to be welded is the butt joint of the slab construction of two thickness 6mm, and workpiece 2 is opened 30 ° of double V-grooves, and width of root face 2mm with two workpiece 2 clampings, and does not stay the fit-up gap through anchor clamps.The setting welding current is 120A, and speed of welding is 12m/h, and protective gas 14 flows are 7L/min, and powder feeding working gas 15 flows are 4L/min, and the alloy powder powder sending quantity is 150g/min, and tungsten electrode 8 diameters are 2.4mm.Alloy powder material is by weight 6% Cr
2O
3Powder, 4%TiO
2Powder and surplus Al powder constituent; With containing after the alloy powder material drying in powder feeding mechanism 1; Proofread and correct tungsten electrode 8 and powder-feeding nozzle 3 to neutrality, make the extended line of tungsten electrode 8 and powder-feeding nozzle 3 intersect 50 ° of incidence angles, and in alignment with workpiece 2 groove to be welded positions along injection powder feeding directions.Open powder feeding mechanism 1 powder feeding in advance, alloy powder is sprayed with suitable stability of flow from powder-feeding nozzle 3, form the alloyed powder later and decadent stage of a school of thought 13.After treating that powder feeding is stable, unlatching tungsten argon arc welding gun 4 is supplied gas in advance and is protected zone to be welded, and the electric arc thermal source 12 that ignites then welds.After treating that the welding of ground floor weld seam is accomplished, stop the alloy powder injection and send to, blow-out, tungsten argon arc welding gun 4 lags behind and stops the supple of gas or steam.Repeat said procedure and carry out the welding of second layer weld seam, accomplish until the whole piece weld seam.Welding finishes, and weldment cools off naturally.
Embodiment 2: as shown in Figure 4, Al alloy parts 2 to be welded is the butt joint of the slab construction of two thickness 3mm, workpiece 2 square grooves, and with two workpiece 2 clampings, the fit-up gap is 1mm through anchor clamps.Alloy powder material is by weight 6% Cr
2O
3Powder, 4% TiO
2Powder and surplus Al powder constituent; With mixing well with acetone soln after the alloy powder material drying; And evenly brush the preset clearance place that is filled in workpiece 2 to be welded, and form certain alloy powder reinforcement layer on surface, place to be welded, wait that the acetone soln that presets in the alloy powder 17 volatilizees fully.The setting welding current is 120A, and speed of welding is 10m/h, and protective gas 14 flows are 7L/min, and tungsten electrode 8 diameters are 2.4mm.Unlatching tungsten argon arc welding gun 4 is supplied gas in advance and is protected zone to be welded, and the electric arc thermal source 12 that ignites then welds.After zone to be welded welding is accomplished, blow-out, tungsten argon arc welding gun 4 lags behind and stops the supple of gas or steam, and welding finishes, and weldment cools off naturally.
Claims (6)
1. the tungsten argon arc welding method of an aluminium alloy adopts alloy powder as welding filling material, it is characterized in that the step of said welding method is following:
(1) for use with containing in powder feeding mechanism after the alloy powder material drying;
(2) calibration tungsten argon arc welding gun and powder feeding mechanism powder-feeding nozzle centering;
(3) powder feeding mechanism shifts to an earlier date powder feeding, under gas pressure, makes alloy powder by the stable ejection of powder feeding spout;
(4) the tungsten argon arc welding gun is supplied gas in advance and is protected zone to be welded, and the electric arc that ignites then welds;
(5) after zone welding to be welded is accomplished, stop the alloy powder injection and send to, blow-out, the tungsten argon arc welding gun lags behind and stops the supple of gas or steam, and welding finishes, and weldment cools off naturally.
2. the alloy powder of aluminium alloy according to claim 1 is filled tungsten argon arc welding method, it is characterized in that: alloy powder adopts argon gas to send to as working gas is auxiliary, and the powder feeding gas circuit is independent of the inert protective gas gas circuit when welding.
3. the alloy powder of aluminium alloy according to claim 1 is filled tungsten argon arc welding method; It is characterized in that: the alloy powder as packing material is aluminium base powder; Wherein contain active component and stabilising arc composition that total amount is not less than 5% quality percentage composition, active component is Cr
2O
3, MnO
2, at least a among the CuO, the stabilising arc composition is TiO
2, CaF
2In at least a, active component and stabilising arc composition are prepared according to the 6:4 part by weight.
4. the alloy powder of aluminium alloy according to claim 1 is filled tungsten argon arc welding method; It is characterized in that: the specific practice of said step (2) calibration tungsten electrode and powder-feeding nozzle centering is; The extended line that sprays powder feeding axis direction and tungsten electrode is intersected; And forming 30 °～60 ° incidence angle according to the difference of welding procedure, final alignment is in workpiece position to be welded.
5. the alloy powder of aluminium alloy according to claim 1 is filled tungsten argon arc welding method, it is characterized in that: alloy powder adopts the mode of filling automatically to add in the aluminum alloy materials weld seam to be welded by powder feeding mechanism.
6. the alloy powder of magnesium alloy according to claim 1 is filled tungsten argon arc welding method, and it is characterized in that: powder feeding working gas flow is 3～8 liters of per minutes, and powder sending quantity is per minute 150～350 grams.
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|---|---|---|---|
| CN201110376892.1A CN102489841B (en) | 2011-11-24 | 2011-11-24 | Tungsten argon arc welding method filled by the alloy powder of aluminium alloy |
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| CN201110376892.1A CN102489841B (en) | 2011-11-24 | 2011-11-24 | Tungsten argon arc welding method filled by the alloy powder of aluminium alloy |
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| CN102489841B CN102489841B (en) | 2016-03-23 |
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Cited By (6)
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| CN102886625A (en) * | 2012-10-16 | 2013-01-23 | 重庆理工大学 | Efficient active agent used for aluminum alloy alternating current TIG (tungsten inert gas) welding |
| CN105171214A (en) * | 2015-10-16 | 2015-12-23 | 吴忠仪表有限责任公司 | PTA central tungsten electrode powder-feeding device |
| CN110270743A (en) * | 2019-07-22 | 2019-09-24 | 福尼斯(南京)表面工程技术有限公司 | Robot automation's welding system and its application method for PTA technique |
| CN110497066A (en) * | 2019-08-21 | 2019-11-26 | 大连理工大学 | One kind being based on SiCpThe aluminum alloy piping welding method of/Al composite material strengthening mechanism |
| CN113523502A (en) * | 2021-06-16 | 2021-10-22 | 中国核工业第五建设有限公司 | Large-pipe-diameter stainless steel double-side synchronous welding process |
| CN114273662A (en) * | 2021-12-19 | 2022-04-05 | 南京理工大学 | Laser deposition-based thick plate high-nitrogen steel connecting method |
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| CN105171214A (en) * | 2015-10-16 | 2015-12-23 | 吴忠仪表有限责任公司 | PTA central tungsten electrode powder-feeding device |
| CN110270743A (en) * | 2019-07-22 | 2019-09-24 | 福尼斯(南京)表面工程技术有限公司 | Robot automation's welding system and its application method for PTA technique |
| CN110270743B (en) * | 2019-07-22 | 2024-04-12 | 福尼斯(南京)管道科技有限公司 | Robot automatic welding system for PTA process and use method thereof |
| CN110497066A (en) * | 2019-08-21 | 2019-11-26 | 大连理工大学 | One kind being based on SiCpThe aluminum alloy piping welding method of/Al composite material strengthening mechanism |
| CN113523502A (en) * | 2021-06-16 | 2021-10-22 | 中国核工业第五建设有限公司 | Large-pipe-diameter stainless steel double-side synchronous welding process |
| CN114273662A (en) * | 2021-12-19 | 2022-04-05 | 南京理工大学 | Laser deposition-based thick plate high-nitrogen steel connecting method |
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| Publication number | Publication date |
|---|---|
| CN102489841B (en) | 2016-03-23 |
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