CN103170759B - Aluminum welding powder and welding method thereof - Google Patents
Aluminum welding powder and welding method thereof Download PDFInfo
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- CN103170759B CN103170759B CN201310119235.8A CN201310119235A CN103170759B CN 103170759 B CN103170759 B CN 103170759B CN 201310119235 A CN201310119235 A CN 201310119235A CN 103170759 B CN103170759 B CN 103170759B
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 105
- 238000003466 welding Methods 0.000 title claims abstract description 99
- 239000000843 powder Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 17
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 7
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 claims abstract description 7
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 claims abstract description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004411 aluminium Substances 0.000 claims description 68
- 239000000203 mixture Substances 0.000 claims description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 229910052718 tin Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000000356 contaminant Substances 0.000 claims description 4
- 229960004643 cupric oxide Drugs 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000003721 gunpowder Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 2
- 239000005751 Copper oxide Substances 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 229910000431 copper oxide Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910004261 CaF 2 Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910006404 SnO 2 Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000002932 luster Substances 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910000091 aluminium hydride Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910000050 copper hydride Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003832 thermite Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Abstract
The invention relates to aluminum welding powder and a welding method thereof, and belongs to the technical field of aluminum and aluminum alloy welding. The aluminum welding powder comprises the following components: by weight, copper oxide 17%-19%, vanadium pentoxide 12%-14%, stannic oxide 13%-15%, lithium sulfate 1%-2%, boron powder 3%-4%, calcium fluoride 2.5%-3%, and the balance is aluminum powder. According to the aluminum welding powder, heat-released welding of aluminum parent metal is achieved. The welding method of the aluminum welding powder has the advantages that power sources or gas sources or hot sources or energy sources are not required for welding, and the aluminum welding powder belongs to typical environment-friendly electricity-less welding materials; and the welding device is compact, light in weight, easy to carry, suitable for field operation, aerial operation and the like, and especially suitable for emergency repairing of aluminum conductors after disasters such as an earthquake and a snow disaster.
Description
Technical field
The present invention relates to a kind of aluminium welding powder and welding method thereof, belong to Al and Alalloy welding technology field.
Background technology
Aluminium busbar is one of most important part in whole electrolytic aluminium factory building, direct current after rectification is incorporated into electrolytic cell by aluminium busbar, electrolytic cell has negative busbar, anode bus, riser bus bar and soft ribbons bus, be in series by aluminium busbar between groove and groove, interbus is also had between factory building and factory building, but conductive aluminum bus often understands accidental damage aborning, need to carry out reparation welding in time to the bus damaged, produce in order to avoid impact is normal, and the enforcement of the existence in magnetic field to band electric welding creates very large negative effect, cause whole welding process difficulty, appearance of weld is of poor quality, welding process is even likely made to implement.In addition, also there is certain defect in the connectivity problem of aluminum conductor, often adopts traditional method of attachment at present: electric welding, bolts and nuts connection, line ear and crimping.These interconnection techniques and product also exist complex operation, it is lack of standardization to connect, quality is lower, the shortcoming such as unreliable, easily occurs that conductor overheating, line drop are excessive, and then cause the even open circuit of various electric fault in transmission of electricity process.
For effectively overcoming the above problems, domestic and international relevant enterprise and professional person have carried out a large amount of test and study work to the welding procedure of Al and Alalloy, and make some progress.The main method of current reparation aluminium busbar is fallen electric current or adopts carbon arc welding to weld after having a power failure.Power failure not only causes the minimizing of electrolytic aluminium output, energy consumption significantly increases, and also can increase noxious gas emission, cause environmental pollution.Denomination of invention is a kind of method of cast aluminium braze-welding, application number be 94119278.4 patent discloses a kind of braze-welding method of welding all kinds of Birmasil with oxy-acetylene flame, although the method can realize the welding of aluminium alloy, but its complex operation, course of reaction is difficult to hold, and need extra heating, the requirement that discontented podomere can weld, and be not suitable for field work and emergent time welding.
Along with the development of welding procedure, in recent years, exothermic weld becomes study hotspot.Exothermic weld is also referred to as fireclay welding.Without the need to external power source or thermal source, be utilize the chemical reaction of sweat soldering to produce high temperature solution, and discharge a kind of method that high heat completes welding.Exothermic weld chemical reaction velocity quickly, only just can complete welding in several seconds.Its heat produced is high, can effectively conduct to welding position, make it fuse into one, make copper/copper, copper/aluminium, forms firmly molecule and combine between copper/steel, aluminium/aluminium.
Exothermic weld is in fact a kind of new technique that self-propagating technology combines with solder technology, belongs to the category of self-propagation seal technology, and it is simple and convenient that it has welding, and operating efficiency is high; Welding effect is good, and Weld Performance is excellent; The advantage such as applied widely.Although exothermic weld is widely applied, it is but subject to great restriction in welding of aluminum and field of aluminum alloys.This is because the principle that welding powder realizes welding adopts the copper of reproducibility active metal exothermic reaction generation melting as the another kind of metal oxide of the reduction such as aluminium, magnesium (being generally the oxide of copper or iron) or iron to realize welding as weld metal.Because aluminium itself is very active, be difficult to by other metal replacement out, and aluminum mother plate has rapid heat dissipation, the characteristic such as oxidizable, so it is very large to adopt self-propagating exothermic reaction welding Al and Alalloy mother metal to be considered to difficulty always.
Based on this, the present invention is intended to research and development novel aluminum welding powder, seeks new reaction system, realizes moment heat release, rely on the excessive aluminium powder of heat melts, and product is discharged as welding slag, thus realize the exothermic weld of Al and Alalloy truly.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of aluminium welding powder that can realize aluminum and its alloy welding.
Aluminium welding powder of the present invention uses excessive aluminium powder, and by releasing large calorimetric instantaneously, melts excessive aluminium powder, as weld metal, thus realizes the exothermic weld to aluminum and its alloy.
For reaching above object, the composition in novel aluminum welding powder of the present invention and mass percent are: cupric oxide 17 ~ 19%, vanadic anhydride 12 ~ 14%, tin ash 13 ~ 15%, lithium sulfate 1 ~ 2%, boron powder 3 ~ 4%, calcirm-fluoride 2.5 ~ 3%, and all the other are aluminium powder.
It is better that order number is all 200 ~ 300 order welding effects.
In this formula, all can there is redox reaction with aluminium powder in three kinds of oxides, realizes moment heat release, and exothermic weld heat is large, and reduzate all has alloying action, improves welding point hardness; In addition reduzate copper can ensure the electric conductivity that welding point is good; Vanadium can increase the mobility of molten metal; Tin can reduce alloy melting point, strengthens the mobility of aluminium alloy, and tin has good wetability with aluminium, realizes good metallurgical binding between guarantee weld seam and aluminum mother plate; Lithium sulfate has good hygroscopicity, can reduce or eliminate the defects such as the pore caused because of moisture a small amount of in welding powder, and lithium sulfate and aluminium powder heat of reaction are comparatively large, and make weld penetration comparatively large, metallurgical binding is more firm; Boron can reduce the fragility of weld metal, improves welding point toughness; Calcirm-fluoride plays fluxing effect, and the alundum (Al2O3) slag after can making reaction is effectively separated with aluminium alloy, purification weld metal; In formula, aluminium powder is excessive, and part aluminium and oxide react, and unnecessary aluminium dilutes thermite, absorption portion heat during fusing on the one hand, reduces exothermic reaction liberated heat, prevents splash; Aluminium also fills weld seam as weld metal on the other hand, makes the composition of weld metal and mother metal similar as far as possible.
Use aluminium welding powder of the present invention to weld the method for aluminum or aluminum alloy, specifically comprise the following steps:
1) prepare aluminium welding powder, stir;
2) pre-welding treatment is carried out to aluminium to be welded, remove surface and oil contaminant and oxide-film;
3) bottom is opened foraminate charging mould and aluminium to be welded is assembled, require charging mould small hole at bottom part and aluminium region alignment to be welded;
4) aluminium is preheating to 200-300 DEG C, and dries charging mould;
5) put catch at charging mold bottom, cover aperture, welding powder is loaded mould, slightly flatten compacting;
6) on welding powder, sprinkle starting mix, igniting, after the catch fusing in charging mould, high temperature fluent metal flow into aluminium region to be welded by mould small hole at bottom part of feeding, and can form good metallurgical binding after cooling.
Described aluminium to be welded can be placed on graphite base.Graphite base heat accumulation is more, can slow down the heat consume of aluminium, be beneficial to welding.
Described catch is tinfoil paper.
The composition of described starting mix is gunpowder.
The pre-welding treatment of described aluminium to be welded, concrete method for cleaning is, first wipes aluminium material surface greasy dirt to be welded with the organic solvent such as acetone, gasoline, then with brass wire brush or stainless steel wire brush brush aluminium welding surface, or with scraper, file cleaning welding surface, until aluminium exposes metallic luster.
Also can adopt with the following method: first with the greasy dirt of the organic solvent removing aluminium material surfaces such as acetone, gasoline, kerosene, embathe about 10min with 5% ~ 10wt%NaOH solution of 40 DEG C ~ 70 DEG C, then rinse with flowing clear water, then use 30wt%HNO
3solution pickling 3min, flowing clear water rinses rear washes of absolute alcohol, air-dry or low temperature drying.
Adopt the modes such as oxy-acetylene rifle, electric furnace, tracklayer heater to aluminium preheating.
During aluminium welding powder welding Al and Alalloy of the present invention, relate to four kinds of exothermic reactions, be respectively aluminium and cupric oxide reaction displacement copper, aluminium and vanadic anhydride reaction displace vanadium, and aluminium and tin ash reaction displace tin, lithium sulfate and reactive aluminum heat release.
Aluminium powder in aluminium welding powder of the present invention is reducing agent, cupric oxide, vanadic anhydride, and tin ash, lithium sulfate is oxidant.
The present invention has following beneficial effect:
1, aluminium welding powder of the present invention is the green welding material clean without electricity, relies on welding powder id reaction to produce high heat, effectively conducts to welding position, make it fuse into one, form intermolecular combination.Welding powder realizes welding based on interface soakage principle, self-propagating principle and compound metallurgical principle, need not other any power supply, source of the gas, thermal source, energy, belongs to typical green without electric welding material.
2, method of operating equipment is simple.Without any need for power supply and miscellaneous equipment during welding of aluminum mother metal; Without the need to high pressure, also without the need to protective atmosphere, only rely on mixed-powder combustion reaction liberated heat just can weld, operating efficiency is high.Small volume and less weight, simple to operate.
3, applied widely.Due to equipment small volume and less weight, easily carry.Therefore be applicable to field, work high above the ground etc., be also specially adapted to earthquake, the emergency first-aid repair of the aluminum conductor after the disasters such as snow disaster.
Accompanying drawing explanation
Fig. 1 is reaction unit schematic diagram.Comprise charging mould (3), catch (4), aluminium to be welded (5) and graphite base (6).Be welding powder (2) and starting mix (1) in charging mould.
Detailed description of the invention
To contribute to by the following description of the embodiments understanding the present invention, but not limit content of the present invention.
Embodiment one:
First chemical pure Al (200 order), CuO (200 order), V is taken successively according to the mass ratio of 43:19:14:15:2:4:3
2o
5(200 order), SnO
2(200 order), Li
2sO
4(300 order), B (300 order), CaF
2(200 order) powder, and mixed, i.e. obtained aluminium welding powder.Then wipe aluminum mother plate surface and oil contaminant to be welded with acetone, then clear up welding surface with file, until mother metal exposes metallic luster.Charging mould and aluminum mother plate are assembled, afterwards aluminum mother plate is preheating to 300 DEG C, and dry charging mould.Put catch at charging mold bottom, cover aperture, welding powder is loaded mould, slightly flatten compacting.Welding powder sprinkles starting mix, igniting, after the catch fusing in charging mould, high temperature fluent metal flow into aluminum mother plate region to be welded by mould small hole at bottom part of feeding, and can form good metallurgical binding after to be cooled.
Embodiment two:
First chemical pure Al (200 order), CuO (200 order), V is taken successively according to the mass ratio of 43:19:14:15:2:4:3
2o
5(200 order), SnO
2(200 order), Li
2sO
4(300 order), B (300 order), CaF
2(200 order) powder, and mixed, i.e. obtained aluminium welding powder.With the greasy dirt on acetone removing aluminium busbar surface, embathe aluminum mother plate welding surface about 10min with the 10%NaOH solution of 40 DEG C, then use 30%HNO
3solution pickling 3min, then rinse with flowing clear water, flowing clear water rinses rear washes of absolute alcohol, air-dry.Charging mould and aluminum mother plate are assembled, afterwards aluminum mother plate is preheating to 300 DEG C, and dry charging mould.Put catch at charging mold bottom, cover aperture, welding powder is loaded mould, slightly flatten compacting.Welding powder sprinkles starting mix, igniting, after the catch fusing in charging mould, high temperature fluent metal flow into aluminum mother plate region to be welded by mould small hole at bottom part of feeding, and can form good metallurgical binding after to be cooled.
Embodiment three:
First chemical pure Al (200 order), CuO (200 order), V is taken successively according to the mass ratio of 103:34:24:26:2:6:5
2o
5(200 order), SnO
2(200 order), Li
2sO
4(300 order), B (300 order), CaF
2(200 order) powder, and mixed, i.e. obtained aluminium welding powder.Then wipe aluminum mother plate surface and oil contaminant to be welded with acetone, then clear up welding surface with file, until mother metal exposes metallic luster.Charging mould and aluminum mother plate are assembled, afterwards aluminum mother plate is preheating to 300 DEG C, and dry charging mould.Put catch at charging mold bottom, cover aperture, welding powder is loaded mould, slightly flatten compacting.Welding powder sprinkles starting mix, igniting, after the catch fusing in charging mould, high temperature fluent metal flow into aluminum mother plate region to be welded by mould small hole at bottom part of feeding, and can form good metallurgical binding after to be cooled.
Embodiment four:
First chemical pure Al (200 order), CuO (200 order), V is taken successively according to the mass ratio of 103:34:24:26:2:6:5
2o
5(200 order), SnO
2(200 order), Li
2sO
4(300 order), B (300 order), CaF
2(200 order) powder, and mixed, i.e. obtained aluminium welding powder.With the greasy dirt on acetone removing aluminium busbar surface, embathe aluminum mother plate welding surface about 10min with the 10%NaOH solution of 40 DEG C, then use 30%HNO
3solution pickling 3min, then rinse with flowing clear water, flowing clear water rinses rear washes of absolute alcohol, air-dry.Charging mould and aluminum mother plate are assembled, afterwards aluminum mother plate is preheating to 300 DEG C, and dry charging mould.Put catch at charging mold bottom, cover aperture, welding powder is loaded mould, slightly flatten compacting.Welding powder sprinkles starting mix, igniting, after the catch fusing in charging mould, high temperature fluent metal flow into aluminum mother plate region to be welded by mould small hole at bottom part of feeding, and can form good metallurgical binding after to be cooled.
Claims (7)
1. an aluminium welding powder, is characterized in that, composition wherein and mass percent are: cupric oxide 17 ~ 19%, vanadic anhydride 12 ~ 14%, tin ash 13 ~ 15%, lithium sulfate 1 ~ 2%, boron powder 3 ~ 4%, calcirm-fluoride 2.5 ~ 3%, and all the other are aluminium powder.
2. aluminium welding powder according to claim 1, is characterized in that, all one-tenth subhead numbers are all 200 ~ 300 orders.
3. use the method for the aluminium welding powder welding aluminum or aluminum alloy described in claim 1, it is characterized in that, comprise the following steps:
1) prepare aluminium welding powder described in claim 1, stir;
2) pre-welding treatment is carried out to aluminium to be welded, remove surface and oil contaminant and oxide-film;
3) bottom is opened foraminate charging mould and aluminium to be welded is assembled, require charging mould small hole at bottom part and aluminium region alignment to be welded;
4) aluminium is preheating to 200-300 DEG C, and dries charging mould;
5) put catch at charging mold bottom, cover aperture, welding powder is loaded mould, slightly flatten compacting;
6) on welding powder, sprinkle starting mix, igniting, after the catch fusing in charging mould, high temperature fluent metal flow into aluminium to be welded region to be welded by mould small hole at bottom part of feeding, and can form good metallurgical binding after cooling.
4. method according to claim 3, is characterized in that, described aluminium to be welded is placed on graphite base.
5. method according to claim 3, is characterized in that, described catch is tinfoil paper.
6. method according to claim 3, is characterized in that, the composition of described starting mix is gunpowder.
7. method according to claim 3, is characterized in that, adopts oxy-acetylene rifle, electric furnace or tracklayer heater to aluminium preheating to be welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310119235.8A CN103170759B (en) | 2013-04-08 | 2013-04-08 | Aluminum welding powder and welding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310119235.8A CN103170759B (en) | 2013-04-08 | 2013-04-08 | Aluminum welding powder and welding method thereof |
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| CN103170759B true CN103170759B (en) | 2015-03-04 |
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| CN107790915A (en) * | 2017-11-15 | 2018-03-13 | 广西塔锡科技有限公司 | A kind of aluminium welding powder and preparation method thereof |
| CN110932049A (en) * | 2019-11-15 | 2020-03-27 | 东莞市输变电工程公司 | Combustion connection method for cable |
| CN113399866B (en) * | 2021-06-11 | 2022-02-15 | 武汉大学 | Aluminum electrolysis cell horizontal bus hot-line repair welding flux and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2870498A (en) * | 1955-04-25 | 1959-01-27 | Erico Prod Inc | Method for welding aluminum article to another metal article |
| CA941109A (en) * | 1971-08-17 | 1974-02-05 | Canada Wire And Cable Limited | Welding of hollow core aluminum conductors |
| RO86454B1 (en) * | 1983-07-18 | 1985-03-31 | INSTITUTUL DE CERCETARI SI PROIECTARI TEHNOLOGICE îN TRANSPORTURI | Thermite for welding copper with copper, bronze, brass, steel or pig iron |
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