CN102886625A - Efficient active agent used for aluminum alloy alternating current TIG (tungsten inert gas) welding - Google Patents
Efficient active agent used for aluminum alloy alternating current TIG (tungsten inert gas) welding Download PDFInfo
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- CN102886625A CN102886625A CN2012103924074A CN201210392407A CN102886625A CN 102886625 A CN102886625 A CN 102886625A CN 2012103924074 A CN2012103924074 A CN 2012103924074A CN 201210392407 A CN201210392407 A CN 201210392407A CN 102886625 A CN102886625 A CN 102886625A
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Abstract
The invention discloses an efficient active agent used for aluminum alloy alternating current TIG (tungsten inert gas) welding. The efficient active agent comprises Cr2O3 powder, TiO2 powder and La2O3 powder according to following weight ratio: 55%-65% of Cr2O3, 20%-30% of TiO2 and 10%-20% of La2O3. Before the powder active agent is used, the powdery active agent is dried in vacuum at the temperature of 80-100 DEG C for one to two hours, acetone is added into the powdery active agent to be stirred and uniformly mixed into a pasty resultant, and then, all the positions to be welded are coated with the pasty resultant. The thickness of the paste is 0.2mm-0.5mm. After the acetone volatilizes, the positions are welded. The active agent is used for active TIG (tungsten inert gas) welding of aluminum alloy. Under the same welding condition, the penetration effect which is 3-4 times of the traditional TIG welding can be obtained by the active agent, thus the welding efficiency is obviously enhanced, and the formation of the weld surface is favorable. The efficient active agent has an ideal engineering meaning.
Description
Technical field
The present invention relates to a kind of high-efficiency activated dose for the AC-TIG WELDING weldering, be applicable to the welding of aluminum alloy materials, especially the efficient TIG welding of cut deal aluminium alloy.
Background technology
Aluminum alloy materials obtains increasingly extensive application in the leading-edge fields such as the manufacturing industry such as automobile, locomotive and aerospace industry.Being widely used of aluminum alloy materials, one of key technology that solve is exactly connectivity problem, and welding is first-selected a kind of advanced person's method of attachment beyond doubt.Traditional TIG weldering (Tungsten Inert Gas Welding) is because to have welding quality high, and the fusing amount of weldment such as can accurately control at the characteristics, is widely used aborning.But the single-run welding fusion penetration of TIG weldering is shallow, and to the material composition sensitive, particularly production efficiency is low, to such an extent as in producing, welding needs to consume higher energy.These shortcomings have restricted traditional TIG and have been welded in application in the Welded.Active TIG welding (Activating flux-TIG is called for short A – TIG) method is to use the activating agent material of special development, is coated to the welded piece surface before the weldering, welds again.Compare with the TIG weldering of routine, in the situation that welding condition is constant, active TIG welding procedure enlarges markedly welding penetration, and does not increase the fillet in normal shear width.Therefore, be the Novel welding method of a kind of high efficiency, low energy consumption.Originally active TIG welds and is developed in the sixties in 20th century by former Soviet Union's bar institute of welding (PWI), but until phase late 1990s ability is carried out widely research in the research institution of American-European countries.Domestic scholars has been carried out large quantity research to activity of materials welding procedures such as mild steel, stainless steels, has developed the activating agent material of multiple one-tenth series, has also promoted the application of active solder technology.And the development of high-efficiency activated agent material is conducive to promote active TIG solder technology applying in Al-alloy products is manufactured.
Summary of the invention
The objective of the invention is to propose a kind of high-efficiency activated dose for the welding of aluminium alloy AC-TIG WELDING, compare with existing traditional TIG welding technology, apply high-efficiency activated dose of the present invention's proposition in position to be welded, in the welding aluminum alloy materials process, can enlarge markedly welding penetration, remedy the deficiency of traditional TIG welding aluminum alloy welding efficiency, thereby under the welding current of less, obtain relatively higher welding production efficiency, reach energy-conservation, efficient purpose.
The present invention proposes is used for high-efficiency activated dose of aluminium alloy AC-TIG WELDING welding by Cr
2O
3Powder, TiO
2Powder and La
2O
3Powder constituent, its weight proportion is: Cr
2O
3: 55%～65%, TiO
2: 20%～30%, La
2O
3: 10%～20%.
This activating agent is Powdered, and each powder size is 250 orders.Before the use, with this powder activity agent vacuum drying 1～2 hour under 80～100 ℃ of temperature, add acetone again and stir, evenly be mixed into pulpous state, and apply and cover whole positions to be welded, coating thickness is 0.2mm～0.5mm.After the acetone volatilization, namely weld.
This activating agent is applicable to the AC-TIG WELDING welding of aluminum alloy materials.
The experimental study of a large amount of systems shows, adopts this activating agent in the active TIG welding of aluminium alloy, can comprehensively bring into play Cr
2O
3Powder, TiO
2Powder and La
2O
3Powder effect separately produces free TIG electric arc and shrinks, and increases the resistance heat effect of electric arc conductive channel, makes the welding arc Source more concentrated, and can change the surface tension gradient direction of motlten metal in the Welded molten bath.Advantage of the present invention is that this activating agent of use in active TIG welding aluminum alloy under the same weld process conditions, can obtain 3～5 times to the fusion penetration effects of traditional TIG welding, welding efficiency is significantly improved, and appearance of weld is good.Description of drawings
Fig. 1 is the appearance of weld of the thick 2024 aluminium alloy gained of traditional TIG welding 5mm.
Fig. 2 is that the seam cross-section of the thick 2024 aluminium alloy gained of traditional TIG welding 5mm is shaped.
Fig. 3 is the appearance of weld that adopts the thick 2024 aluminium alloy gained of active TIG welding 5mm among the embodiment 1.
Fig. 4 adopts the seam cross-section of the thick 2024 aluminium alloy gained of active TIG welding 5mm to be shaped among the embodiment 1.
Fig. 5 adopts the seam cross-section of the thick 2024 aluminium alloy gained of active TIG welding 5mm to be shaped among the embodiment 2.
Fig. 6 adopts the seam cross-section of the thick 2024 aluminium alloy gained of active TIG welding 5mm to be shaped among the embodiment 3.
Fig. 7 adopts the seam cross-section of the thick 2024 aluminium alloy gained of active TIG welding 5mm to be shaped among the embodiment 4.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
Fig. 1 and Fig. 2 have shown appearance of weld effect and the weld penetration effect of thick 2024 aluminum alloy plate materials of traditional TIG welding 5mm, the welding condition that adopts is: welding current is for exchanging 150A, speed of welding is 60cm/min, and argon flow amount is 10L/min, and the welding gun inclination angle is 90 °.
Embodiment 1: thick 2024 aluminum alloy plate materials of 5mm are carried out active TIG welding.The activating agent weight proportion that adopts is: Cr
2O
3: 58%, TiO
2: 28%, La
2O
3: 14%.With powder activity agent vacuum drying 1 hour under 90 ℃ of temperature, add again acetone and mix.The Al powder thermit powder evenly is coated in position to be welded, and coating thickness is 0.4mm.After the acetone volatilization, set welding parameter: welding current is for exchanging 150A, and speed of welding is 60cm/min, and argon flow amount is 10L/min, and the welding gun inclination angle is 90 °, welds.
Fig. 3 and Fig. 4 are respectively welding procedure and the activating agent interpolation adopted among the embodiment 1 and carry out active TIG welding, the appearance of weld that obtains and seam cross-section fusion penetration.Can find out: appearance of weld is good, the face of weld width that traditional TIG welding obtains in Fig. 1, and the weld width that active TIG welding obtains has the effect that obviously reduces; Weld penetration has remarkable increase, the weld penetration that traditional TIG welding obtains in Fig. 2, and the weld penetration that active TIG welding obtains has increased approximately 3.9 times.
Embodiment 2: thick 2024 aluminum alloy plate materials of 5mm are carried out active TIG welding.The activating agent weight proportion that adopts is: Cr
2O
3: 55%, TiO
2: 28%, La
2O
3: 17%.With powder activity agent vacuum drying 1 hour under 90 ℃ of temperature, add again acetone and mix.The Al powder thermit powder evenly is coated in position to be welded, and coating thickness is 0.4mm.After the acetone volatilization, set welding parameter: welding current is for exchanging 150A, and speed of welding is 60cm/min, and argon flow amount is 10L/min, and the welding gun inclination angle is 90 °, welds.
Fig. 5 is for adopting welding procedure and activating agent interpolation among the embodiment 2 to carry out active TIG welding, the seam cross-section fusion penetration that obtains.Can find out: weld penetration has remarkable increase, the weld penetration that traditional TIG welding obtains in Fig. 2, and the weld penetration that active TIG welding obtains has increased approximately 3.5 times.
Embodiment 3: thick 2024 aluminum alloy plate materials of 5mm are carried out active TIG welding.The activating agent weight proportion that adopts is: Cr
2O
3: 62%, TiO
2: 24%, La
2O
3: 14%.With powder activity agent vacuum drying 1 hour under 90 ℃ of temperature, add again acetone and mix.The Al powder thermit powder evenly is coated in position to be welded, and coating thickness is 0.4mm.After the acetone volatilization, set welding parameter: welding current is for exchanging 150A, and speed of welding is 60cm/min, and argon flow amount is 10L/min, and the welding gun inclination angle is 90 °, welds.
Fig. 6 is for adopting welding procedure and activating agent interpolation among the embodiment 3 to carry out active TIG welding, the seam cross-section fusion penetration that obtains.Can find out: weld penetration has remarkable increase, the weld penetration that traditional TIG welding obtains in Fig. 2, and the weld penetration that active TIG welding obtains has increased approximately 3 times.
Embodiment 4: thick 2024 aluminum alloy plate materials of 5mm are carried out active TIG welding.The activating agent weight proportion that adopts is: Cr
2O
3: 60%, TiO
2: 25%, La
2O
3: 15%.With powder activity agent vacuum drying 1 hour under 90 ℃ of temperature, add again acetone and mix.The Al powder thermit powder evenly is coated in position to be welded, and coating thickness is 0.4mm.After the acetone volatilization, set welding parameter: welding current is for exchanging 150A, and speed of welding is 60cm/min, and argon flow amount is 10L/min, and the welding gun inclination angle is 90 °, welds.
Fig. 7 is for adopting welding procedure and activating agent interpolation among the embodiment 4 to carry out active TIG welding, the seam cross-section fusion penetration that obtains.Can find out: weld penetration has remarkable increase, the weld penetration that traditional TIG welding obtains in Fig. 2, and the weld penetration that active TIG welding obtains has increased approximately 3 times.
Claims (4)
1. high-efficiency activated dose of being used for the welding of aluminium alloy AC-TIG WELDING, it is characterized in that: activating agent is by Cr
2O
3Powder, TiO
2And La
2O
3Powder constituent, its weight proportion is: Cr
2O
3: 55%～65%, TiO
2: 20%～30%, La
2O
3: 10%～20%.
2. described for aluminium alloy AC-TIG WELDING welding high-efficiency activated dose according to claim 1, it is characterized in that: the optimum weight proportion of the raw material of described activating agent is: Cr
2O
3: 58%～62%, TiO
2: 22%～26%, La
2O
3: 14%～18%.
3. according to claim 1,2 described for aluminium alloy AC-TIG WELDING welding high-efficiency activated doses, it is characterized in that: before using with activating agent vacuum drying 1～2 hour under 80～100 ℃ of temperature, adding acetone stirs again, evenly be mixed into pulpous state, and applying the whole positions to be welded of covering, coating thickness is 0.2mm～0.5mm.
4. for aluminium alloy AC-TIG WELDING welding high-efficiency activated dose according to claim 3, it is characterized in that: each powder size is 250 orders.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689112A (en) * | 2012-06-18 | 2012-09-26 | 重庆大学 | Novel composite active agent for magnesium alloy active tungsten-insert-gas (A-TIG) arc welding |
| CN103317258A (en) * | 2013-07-12 | 2013-09-25 | 兰州理工大学 | Active agent for aluminum alloy active TIG welding and using method |
| CN103990919A (en) * | 2014-04-21 | 2014-08-20 | 张家港华宝机械制造有限公司 | Dedicated welding active agent for deep penetration TIG welding and using method |
| CN109807495A (en) * | 2017-11-20 | 2019-05-28 | 内蒙古工业大学 | A kind of efficient A-TIG Welding for Titanium Alloy, which connects, uses activating agent |
| CN112548335A (en) * | 2020-12-10 | 2021-03-26 | 哈尔滨焊接研究院有限公司 | Narrow-gap double-beam laser powder filling welding method and equipment for aluminum alloy thick-wall component |
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| CN1490120A (en) * | 2002-10-15 | 2004-04-21 | 中国航空工业第一集团公司北京航空制 | Solder for non-melting electrode argon arc welding of stainless steel |
| CN1555957A (en) * | 2004-01-09 | 2004-12-22 | 国营七四一四厂 | Tungsten electrode argon arc welding active flux for increasing welding fusion depth |
| CN102489841A (en) * | 2011-11-24 | 2012-06-13 | 重庆理工大学 | Alloy powder filling tungsten argon arc welding method for aluminum alloys |
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2012
- 2012-10-16 CN CN201210392407.4A patent/CN102886625B/en not_active Expired - Fee Related
Patent Citations (4)
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| CN1221662A (en) * | 1998-12-21 | 1999-07-07 | 赵志显 | Welding rod prescription material capable of welding low carbone stainles steel and its mfg. method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689112A (en) * | 2012-06-18 | 2012-09-26 | 重庆大学 | Novel composite active agent for magnesium alloy active tungsten-insert-gas (A-TIG) arc welding |
| CN103317258A (en) * | 2013-07-12 | 2013-09-25 | 兰州理工大学 | Active agent for aluminum alloy active TIG welding and using method |
| CN103317258B (en) * | 2013-07-12 | 2015-07-08 | 兰州理工大学 | Active agent for aluminum alloy active TIG welding |
| CN103990919A (en) * | 2014-04-21 | 2014-08-20 | 张家港华宝机械制造有限公司 | Dedicated welding active agent for deep penetration TIG welding and using method |
| CN103990919B (en) * | 2014-04-21 | 2017-05-10 | 张家港华宝机械制造有限公司 | Dedicated welding active agent for deep penetration TIG welding and using method |
| CN109807495A (en) * | 2017-11-20 | 2019-05-28 | 内蒙古工业大学 | A kind of efficient A-TIG Welding for Titanium Alloy, which connects, uses activating agent |
| CN109807495B (en) * | 2017-11-20 | 2022-02-22 | 内蒙古工业大学 | Efficient active agent for titanium alloy A-TIG welding |
| CN112548335A (en) * | 2020-12-10 | 2021-03-26 | 哈尔滨焊接研究院有限公司 | Narrow-gap double-beam laser powder filling welding method and equipment for aluminum alloy thick-wall component |
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| CN102886625B (en) | 2015-06-17 |
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