CN101219508A - Seamless explosive core aluminium welding wire and manufacturing method thereof - Google Patents
Seamless explosive core aluminium welding wire and manufacturing method thereof Download PDFInfo
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- CN101219508A CN101219508A CNA2008100491370A CN200810049137A CN101219508A CN 101219508 A CN101219508 A CN 101219508A CN A2008100491370 A CNA2008100491370 A CN A2008100491370A CN 200810049137 A CN200810049137 A CN 200810049137A CN 101219508 A CN101219508 A CN 101219508A
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Abstract
The invention relates to a seamless flux-cored aluminum welding wire, which consists of a sheath and a core part, is conducive to adding an additive conveniently, quantificationally and efficiently during aluminum welding process and does not result in absorption of moisture, slag inclusion and scattering of core active substrates when removing an oxide film. The seamless flux-cored aluminum welding wire has the advantages of convenient application, high welding efficiency, no subsequent cleaning, environmental protection, etc. when being applied to soldering. The seamless flux-cored aluminum welding wire has high welding wire deposition efficiency and large deposition efficiency, while being applied to argon-arc welding and compared with solid core welding of the same specification, weld width is comparatively wide, penetration is increased, shape factor and weld reinforcement are reduced and the weld strength is 15 percent higher. Compared with flux-cored aluminum welding wire made of bite straps, the invention is characterized by less air holes and slag inclusion and high welding reliability.
Description
Technical field
The present invention relates to a kind of seamless explosive core aluminium welding wire, the particularly a kind of argon arc welding of aluminium and welding wire of soldering of being used for.
Background technology
The application of aluminium in industrial production and social life is increasingly extensive, because little, the conduction of proportion, thermal conductivity are good, castability and machining property are good, the important function of aluminium in the modern industry material is irreplaceable.At aspects such as Aeronautics and Astronautics, communication, automobile, high-speed train, urban light rail, shipbuilding, electronics, household electrical appliances, daily necessitiess, for weight reduction, improve effect, strengthen attractive in appearance, with aluminium for copper, obtained gratifying achievements for steel with aluminium.
The extensive use of aluminium depends on Development of Welding Technology to a great extent, and argon arc welding and soldering are still topmost welding method.The welding of aluminium is difficulty relatively, is difficult to be welded on the application that has limited aluminium to a certain extent.The problem that exists in the aluminium welding mainly is because the strong oxidizing property of aluminium causes.The Al of aluminum alloy surface
2O
3The fine and close infusibility of oxide-film, defective such as can cause lack of penetration, the inner slag inclusion of weld seam, pore, face of weld wrinkle skin during welding, do not merge.
Preventing the oxidation of aluminium or the aluminium oxide in the weld seam in the welding process is removed or reduced is the key of resolving contradiction.In the argon arc welding termination process of aluminium, in the molten bath, add reducing substances and can fuse, reduce Al
2O
3Thereby, reaching the atomize effect of broken oxide-film of negative electrode, how an amount of the key of problem be the needed reducing agent of adding, reducing agent and residue thereof should not produce harmful effect to the aluminium weld seam simultaneously.Shandong Polytechnic Univ has used activated rosin flux when the TIG welding of research ZA type alloy, result of study shows, use the weld seam fusion of activated rosin flux welding good, no slag inclusion, pore-free, flawless, but the method for author's employing is that solder flux is directly added weld seam, and does not make flux-cored wire.United States Patent (USP) 3,676,309 and 4,913,927 have adopted at aluminum alloy welding wire surface and have been coated with application layer to improve weldquality.
In the patent of metal core aluminium welding wire of U.S. Huobat Brother Co. application and forming method thereof, be to make tubulose with the aluminum strip band, inside accommodates the core of nitrogen manganese.The patent of medicine core aluminium weld-ring that is used for the aluminium and aluminium alloy pipe joint brazing of Harbin Institute of Technology's application and preparation method thereof adopts the aluminium alloy band is made tubulose, makes medicine core aluminium weld-ring again, core KAlF
4And K
3AlF
6, silica flour forms.The aluminium alloy band is made tubulose make explosive core aluminium welding wire, effect by active material more helps forming fine and close weld seam than solid welding wire, but the easy moisture absorption in the slit of this kind flux-cored wire, be mingled with, and cause being scattered of core active material and influence the effect of welding.
Summary of the invention
The objective of the invention is to overcome above-mentioned technological deficiency and provide a kind of help in the aluminium welding process auxiliary agent convenient, add quantitatively, efficiently, to remove the oxide-film and the moisture absorption that can not cause, to be mingled with, reach the seamless explosive core aluminium welding wire that the core active material is scattered.
For realizing purpose of the present invention, existing according to following technical scheme.It is made up of a kind of seamless explosive core aluminium welding wire crust and core.Crust is to make with aluminum or aluminum alloy, and wherein aluminium alloy comprises by weight percentage and can be: 1, aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%; 2, aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%; Titanium 0--0.3%; 3, aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%; Boron 00.3%; 4, aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%; Rare earth 0-0.3%.Core contains one or more halide, and halide possesses certain activity, can effectively remove the oxide-film on aluminum or aluminum alloy surface, and halide is: any among aluminum fluoride, potassium fluoride, cesium fluoride, the J201.Halide J201 is meant the mixture of zinc chloride, sodium fluoride, potassium chloride, lithium chloride.
Multiple halide comprises by weight percentage: aluminum fluoride 25～60%; Potassium fluoride 0～45%; Cesium fluoride 0～40%; J201 0～50%.
Preparation method of the present invention is:
1, melting and ingot casting: silicon, titanium, boron, rare earth are smelted into intermediate alloy earlier, with intermediate alloy form batching, reinforced.Aluminium, aluminium silicon intermediate alloy, zinc are put into crucible, be heated to 700～1050K fusion, whole melting casting cycle is all with the protection of ice crystal coverture, and with carbon trichloride degasification refining, titanium, boron, rare earth fining agent add later in degasification.Be cast into ingot casting after leaving standstill 0.5～1h after the refinement.Determine scolder shape of cross section and size by medicine core proportion, ingot casting has been taked cast iron formwork erection hollow ingot casting.
2, solder flux is filled: after the ingot casting casting, utilize surplus temperature to carry out the NaOH cleaning treatment more than temperature 350K, the ingot casting of handling carries out the homogenizing annealing under 450～700K condition again, annealing time 3～6 hours.Solder flux constantly adds squeeze cylinder by designing requirement preparation back, and the screw rod rotation in the cylinder is pressed into the ingot casting that is pushing with solder flux from discharging opening.
3, extruding and drawing: the diameter range diameter range of aluminium welding wire commonly used is 1.2～5mm.Because the drawing of medicine core aluminium solder is difficulty relatively, scolder is shaped and mainly relies on extruding to finish.During extruding, ingot casting core trip is motionless, and the hollow pressure ram pressurizes to ingot casting, when the head of solder flux pressue device is rived ingot casting solder flux is pressed into ingot casting inside, and ingot casting is seam again in extrusion die cavity, and ingot casting and solder flux are extruded into flux cored wire.To required size, annealing temperature is controlled at 150～480 ℃ to flux cored wire between passage through active roller die drawing tube reducing.
The specific embodiment:
Example 1, crust aluminium percentage by weight comprise 100%; The multiple halide of core comprises by weight percentage: aluminum fluoride 25%; Potassium fluoride 30%; Cesium fluoride 5%; J201 40%.
Embodiment 2, crust aluminium alloy comprise aluminium 30% by weight percentage; Silicon 10%; Zinc 60%; The multiple halide of core comprises by weight percentage: aluminum fluoride 25%; Potassium fluoride 30%; Cesium fluoride 30%; J201 15%.
Embodiment 3, crust aluminium alloy comprise aluminium 68.7% by weight percentage; Silicon 11%; Zinc 20%; Titanium 0.3%.The multiple halide of core comprises by weight percentage: aluminum fluoride 25%; Cesium fluoride 40%; J201 35%.
Embodiment 4, crust aluminium alloy comprise aluminium 80% by weight percentage; Silicon 5%; Zinc 14.7%; Boron 0.3%.The multiple halide of core comprises by weight percentage: aluminum fluoride 60%; Potassium fluoride 15%; Cesium fluoride 15%; J201 10%.
Embodiment 5, crust aluminium alloy comprise aluminium 80% by weight percentage; Silicon 5%; Zinc 14.7%; Rare earth 0.3%.The multiple halide of core comprises by weight percentage: aluminum fluoride 50%; Potassium fluoride 20%; Cesium fluoride 15%; J201 15%.
Embodiment 6, crust aluminium alloy comprise aluminium 80% by weight percentage; Silicon 5%; Zinc 14.7%; Titanium 0.1%; Boron 0.1%; Rare earth 0.1%.The multiple halide of core comprises by weight percentage: aluminum fluoride 40%; Potassium fluoride 10%; Cesium fluoride 15%; J201 35%.
Preparation method of the present invention may further comprise the steps:
Melting and ingot casting: silicon, titanium, boron, rare earth are smelted into intermediate alloy earlier, with intermediate alloy form batching, reinforced.Aluminium, aluminium silicon intermediate alloy, zinc are put into crucible, be heated to 700～1050K fusion, whole melting casting cycle is all with the protection of ice crystal coverture, and with carbon trichloride degasification refining, titanium, boron, rare earth fining agent add later in degasification.Be cast into ingot casting after leaving standstill 0.5～1h after the refinement.Determine scolder shape of cross section and size by medicine core proportion, ingot casting has been taked cast iron formwork erection hollow ingot casting.Solder flux is filled: after the ingot casting casting, utilize surplus temperature to carry out the NaOH cleaning treatment more than temperature 350K, the ingot casting of handling carries out the homogenizing annealing under 450～700K condition again, annealing time 3～6 hours.Solder flux constantly adds squeeze cylinder by designing requirement preparation back, and the screw rod rotation in the cylinder is pressed into the ingot casting that is pushing with solder flux from discharging opening.Extruding and drawing: the diameter range of aluminium welding wire commonly used is 1.2～5mm.Because the drawing of medicine core aluminium solder is difficulty relatively, scolder is shaped and mainly relies on extruding to finish.During extruding, ingot casting core trip is motionless, and the hollow pressure ram pressurizes to ingot casting, when the head of solder flux pressue device is rived ingot casting solder flux is pressed into ingot casting inside, and ingot casting is seam again in extrusion die cavity, and ingot casting and solder flux are extruded into flux cored wire.To required size, annealing temperature is controlled at 150～480 ℃ to flux cored wire between passage through active roller die drawing tube reducing.
In the development course of flux-cored wire, in order to improve the serviceability of flux-cored wire, the present invention has developed the welding wire of various cross section.Fig. 1 is the cross section of the medicine core aluminium solder of extruding in the research, and from left to right medicine core number is respectively 6,4,3,2,1.
Medicine core aluminium solder cross section after Fig. 1 extruding
Test contrast from manufacturing technology difficulty and serviceability two aspects in the manufacture process.Show by wetability and rigidity comparing result, see that from solder flux filling feasibility aspect single hole and two Kongzuis are excellent, see that from the dependability aspect the many reliabilities of Kong Yue are good more founding mode, ingot casting shape, extrusion process and explosive core aluminium welding wire.The result of the test of comprehensive each side, the cross-sectional form combination property optimum in three holes.
The performance of seamless explosive core aluminium welding wire:
When seamless explosive core aluminium welding wire is used for soldering, have easy to operate, welding efficiency is high, avoid after The characteristics such as continuous clean, the feature of environmental protection is good. Seamless explosive core aluminium welding wire is made weld-ring is used for automatic brazing, Can greatly improve welding efficiency, this weld-ring performance is better than the weldering that seamed cored wire is made Ring.
When seamless explosive core aluminium welding wire is used for argon arc welding, compare welding wire with congener solid core welding wire Deposition efficiency height, deposition efficiency are big, and compare molten wide slightly wide, fusion penetration with the real core weldering of standard and increase Add, form factor and reinforcement all reduce to some extent, weld strength is high by 15%. With make with band Explosive core aluminium welding wire compare the characteristics that pore is few, slag inclusion is few, the weld seam reliability is high arranged.
Seamless explosive core aluminium welding wire also can be used for the welding of additive method aluminium. Through domestic eight refrigeration The production of automobile parts corporation, certain passenger vehicle limited company and certain fin Co., Ltd is examined Nuclear, the medicine core aluminium solder of development is easy to use, be conducive to environmental protection, replaced real core weldering Material.
Claims (12)
1. seamless explosive core aluminium welding wire is characterized in that it is made up of crust and core.
2. a kind of seamless explosive core aluminium welding wire according to claim 1 is characterized in that crust is to make with aluminum or aluminum alloy.
3. a kind of seamless explosive core aluminium welding wire according to claim 1 is characterized in that core contains one or more halide.
4. a kind of seamless explosive core aluminium welding wire according to claim 2 is characterized in that aluminium alloy comprises by weight percentage: aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%.
5. a kind of seamless explosive core aluminium welding wire according to claim 2 is characterized in that aluminium alloy comprises by weight percentage: aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%; Titanium 0-0.3%.
6. a kind of seamless explosive core aluminium welding wire according to claim 2 is characterized in that aluminium alloy comprises by weight percentage: aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%; Boron 0-0.3%.
7. a kind of seamless explosive core aluminium welding wire according to claim 2 is characterized in that aluminium alloy comprises by weight percentage: aluminium 2---99.5%; Silicon 0-13%; Zinc 0--98%; Rare earth 0-0.3%.
8. a kind of seamless explosive core aluminium welding wire according to claim 2 is characterized in that aluminium alloy comprises by weight percentage: aluminium 2---99.5%; Silicon 0--13%; Zinc 0--98%; Titanium 0-0.1%; Boron 0-0.1%; Rare earth 0-0.1%.
9. a kind of seamless explosive core aluminium welding wire according to claim 3 is characterized in that described a kind of halide is: any among aluminum fluoride, potassium fluoride, cesium fluoride, the J201.
10. a kind of seamless explosive core aluminium welding wire according to claim 8 is characterized in that halide J201 is meant the mixture of zinc chloride, sodium fluoride, potassium chloride, lithium chloride.
11. a kind of seamless explosive core aluminium welding wire according to claim 1 is characterized in that multiple halide comprises by weight percentage: aluminum fluoride 25～60%; Potassium fluoride 0～45%; Cesium fluoride 0～40%; J2010～50%.
12. the preparation method of a kind of seamless explosive core aluminium welding wire according to claim 1 is characterized in that: melting aluminum or aluminum alloy ingot casting; Ingot homogenization is annealed, is stripped off the skin; Tamp metal halide and be squeezed into flux cored wire with two moving extrusions; The moulding of welding wire blank drawing tube reducing.
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| CN101941121A (en) * | 2010-03-12 | 2011-01-12 | 江苏大学 | Flux cored wire for particle reinforced aluminum-based composite material fusion welding |
| CN102176997A (en) * | 2008-10-24 | 2011-09-07 | 林肯环球股份有限公司 | Welding electrodes having a flux containing a lithium aluminium alloy and method of manufacturing a welding electrode |
| CN102225496A (en) * | 2011-06-21 | 2011-10-26 | 郑州机械研究所 | Preparation method of zinc-aluminium seamless flux-cored wire |
| US20120125900A1 (en) * | 2009-07-31 | 2012-05-24 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel ,Ltd.) | Flux-cored wire for welding different materials, method for laser welding of different materials, and method for mig welding of different materials |
| CN101875159B (en) * | 2009-04-30 | 2012-06-13 | 佛山市益宏焊接有限公司 | Zinc-based flux-cored wire for low-temperature soldering and manufacture method thereof |
| CN102528316A (en) * | 2012-01-05 | 2012-07-04 | 力创(台山)电子科技有限公司 | Welding ring containing brazing flux for welding aluminum and aluminum alloy and manufacturing method thereof |
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| CN102176997B (en) * | 2008-10-24 | 2015-08-19 | 林肯环球股份有限公司 | There is the welding rod of the solder flux comprising lithium-aluminium alloy and manufacture the method for welding rod |
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| CN101941121B (en) * | 2010-03-12 | 2013-07-17 | 江苏大学 | Flux cored wire for particle reinforced aluminum-based composite material fusion welding |
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| US11426821B2 (en) | 2015-02-25 | 2022-08-30 | Hobart Brothers Llc | Aluminum metal-cored welding wire |
| CN105479036A (en) * | 2016-01-04 | 2016-04-13 | 威县亚泰密封件有限公司 | Metal particle reinforced type flux-cored wire and preparation method thereof |
| CN108274008A (en) * | 2018-03-28 | 2018-07-13 | 何治伟 | A kind of preparation method of anti-splashing cracking resistance aluminium alloy welding wire |
| CN109128572A (en) * | 2018-10-10 | 2019-01-04 | 南昌航空大学 | A kind of aluminium copper welding wire and its preparation method and application |
| CN113118606A (en) * | 2021-03-29 | 2021-07-16 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Electron beam fuse material additive manufacturing method for large titanium-aluminum alloy component |
| CN113118606B (en) * | 2021-03-29 | 2022-10-21 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Electron beam fuse material additive manufacturing method for large titanium-aluminum alloy component |
| CN114789308A (en) * | 2022-04-18 | 2022-07-26 | 金华市双环钎焊材料有限公司 | High-performance seamless flux-cored wire containing rare earth elements for copper and aluminum and manufacturing method thereof |
| CN114789308B (en) * | 2022-04-18 | 2024-05-07 | 金华市双环钎焊材料有限公司 | Rare earth element-containing high-performance seamless flux-cored wire for copper and aluminum and manufacturing method thereof |
| CN115446499A (en) * | 2022-08-29 | 2022-12-09 | 南昌航空大学 | Flux-cored powder, flux-cored aluminum welding wire with flux-cored powder and preparation method of flux-cored aluminum welding wire |
| CN115446499B (en) * | 2022-08-29 | 2023-08-18 | 南昌航空大学 | Flux-cored powder, flux-cored aluminum welding wire with flux-cored powder and preparation method of flux-cored aluminum welding wire |
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