CN104708181A - Welding method of aluminum alloy hollow annular part - Google Patents
Welding method of aluminum alloy hollow annular part Download PDFInfo
- Publication number
- CN104708181A CN104708181A CN201310693257.5A CN201310693257A CN104708181A CN 104708181 A CN104708181 A CN 104708181A CN 201310693257 A CN201310693257 A CN 201310693257A CN 104708181 A CN104708181 A CN 104708181A
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- China
- Prior art keywords
- welding
- aluminum alloy
- alloy hollow
- annulus part
- hollow annulus
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/30—Chains, hoops or rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a welding method of an aluminum alloy hollow annular part, and belongs to the welding field. Firstly, stress annealing is carried out on the aluminum alloy hollow annular part needing welding; beveling is carried out on a position to be welded; oxide and other impurities within the range of 30 mm around the position to be welded are cleaned up through a steel wire ball; degreasing is carried out on the aluminum alloy hollow annular part and a welding wire which have been cleaned through an acetone wiping machine, and then the aluminum alloy hollow annular part needing welding is subjected to chemical cleaning in an NaOH solution and an HNO3 solution; the chemically cleaned aluminum alloy hollow annular part is arranged on a welding tool, the butt joint is not higher than 0.2 mm, and then welding is carried out; after a welding connector is completely condensed and cooled, the aluminum alloy hollow annular part is taken out, and part welding is finished. Through the measures of stress annealing, thorough cleaning of the welding position and implementation of the special welding tool, the quality of the welding joint is guaranteed, the welding defects of poor formation, insufficient welding, air holes and the like are avoided, and deformation of a workpiece is small.
Description
Technical field
The present invention relates to a kind of welding method of aluminum alloy hollow annulus part, belong to welding field.
Background technology
Because aluminium alloy pipe has higher specific strength, lightweight, the feature of a series of excellence such as perfect heat-dissipating, its bool is widely used in the fields such as Aeronautics and Astronautics, naval vessel, automobile as structural member, but for the domain, welding is a difficult problem, adopts traditional welding manner mainly for straight tube welding, easily occurs the weld defects such as cob webbing, lack of penetration and pore, make weld joint mechanical intensity not reach instructions for use, and welding residual stress is large and workpiece deformation is serious.Therefore need to design a kind of new technology to meet the welding requirements of this series products of aluminum alloy hollow annulus part, improve the quality of products.
Summary of the invention
The object of this invention is to provide the welding method of a kind of aluminum alloy hollow annulus part docking, with the difficult problem such as solve that aluminum alloy hollow annulus part welding residual stress is large, workpiece deformation is serious and weldquality is poor, after guaranteeing the welding of aluminum alloy hollow annulus part, size and property of welded joint can meet instructions for use.
The object of the invention is to be achieved through the following technical solutions:
A welding method for aluminum alloy hollow annulus part, comprises weldering front stress relief annealing technique, groove preparatory technology, cleaning technology and welding procedure, specifically comprises the steps:
(1) first, will the aluminum alloy hollow annulus part of welding be needed to carry out stress relief annealing;
(2) then at position to be welded bevel;
(3) with steel wire lump, the oxide within the scope of near sites 30mm to be welded and other impurity are cleaned out; Then, the aluminum alloy hollow annulus part after cleaning out with acetone wiping machinery and required welding wire, carry out degreasing process, then at NaOH solution and HNO
3soak cleaning is carried out in solution;
(4) the aluminum alloy hollow annulus part after Chemical cleaning is placed on welding tooling (welding positioner), makes butt seam be 0-0.2mm, then weld;
(5) welding point solidifies completely to cooling, is taken out by aluminum alloy hollow annulus part, completes weld parts.
In step (1), in stress relief annealing technique, annealing temperature is 300-350 DEG C, and temperature retention time is 1-2h.
In step (2), in groove preparatory technology, groove type is monolateral chamfering 20 °, root face 1.2mm.
In step (3), in cleaning technology, Chemical cleaning concrete grammar is: immerse in NaOH solution by the part to be welded after degreasing process and welding wire, take out after 5-7min and put into water and rinse and remove the NaOH residue on surface of the work, then by the part to be welded after cleaned and welding wire immersion HNO
3in solution, take out after 1-2min and put into water and rinse and remove the HNO on surface of the work
3residue.
Described NaOH solution mass concentration is 9-12%, and configuration temperature is 40-50 DEG C, HNO
3concentration of polymer solution is 30-40%, and configuration temperature is normal temperature.
In step (4), described welding tooling is made up of patrix and counterdie, and patrix is simple cover plate, and counterdie is with the annulus die cavity with open circles ring same size, amplify cavity dimension at position while welding, whole welding tooling (mold) is 80 ° of-100 ° of arc sections.
In welding procedure, joint style is docking, and adopt and exchange metal argon arc welding, welding parameter is electric current 80-100A, and protective gas adopts the argon gas of purity > 99.99%, and gas flow is 11 ± 3 liters/min.
In welding procedure, employing diameter specifications is the aluminium alloy welding wire of Ф 1.0mm, and concrete composition is depending on mother metal.
Advantage of the present invention is: the welding method of aluminum alloy hollow annulus part of the present invention, owing to taking heat treatment before suitable welding, reduce the front residual stress of workpiece welding, by suitable bevel for welding process, and adopt mechanical chipping+Chemical cleaning, the impurity such as the oxide-film at position to be welded have been carried out clearing up thoroughly, have employed specific welding assambly simultaneously, strict control butt seam, and by choosing suitable shield gas flow rate, welding current, the technological parameter of speed of welding, avoid residual stress large, serious and the cob webbing of workpiece deformation, the weld defects such as lack of penetration and pore, enhance productivity, ensure product quality.
Accompanying drawing explanation
Fig. 1-1 is the embodiment of the present invention 1 welding tooling counterdie schematic diagram; Fig. 1-2 is the A-A sectional view of Fig. 1-1.
Fig. 2-1 is the embodiment of the present invention 1 open circles ring butt welding groove schematic diagram.
Fig. 2-2 is the embodiment of the present invention 1 open circles ring rectangular tube sectional views.
Fig. 3-1 is the embodiment of the present invention 2 welding tooling counterdie schematic diagram; Fig. 3-2 is the A-A sectional view of Fig. 3-1.
Fig. 4-1 is the embodiment of the present invention 2 open circles ring butt welding groove schematic diagram.
Fig. 4-2 is the embodiment of the present invention 2 open circles ring round tube sectional views.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, to make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
The present invention, first to needing the aluminum alloy hollow annulus part of welding to carry out stress relief annealing, and to position to be welded bevel and mechanical chipping, then treats welding aluminum alloy annulus part with acetone and welding wire carries out degreasing process, then at NaOH solution and HNO
3carry out Chemical cleaning in solution, finally annulus part after cleaning is fixed on welding special tooling and welds.Welding tooling is made up of patrix and counterdie, and patrix is simple cover plate, and counterdie is with the annulus die cavity with open circles ring same size, and amplify cavity dimension at position while welding, whole welding tooling (mold) is 80 ° of-100 ° of arc sections.Welding adopts and exchanges metal argon arc welding, and welding parameter is electric current 80-100A, and protective gas adopts the argon gas of purity > 99.99%, and gas flow is 11 ± 3 liters/min.By welding the enforcement that front stress relief annealing, welding position are thoroughly cleared up and welded special tooling, can weldquality be ensured, avoid the weld defects such as cob webbing, lack of penetration and pore, and workpiece deformation be little.
Embodiment 1
The material that the present embodiment is applied to welding is a kind of aluminum rectangular tube material annulus part, and sectional dimension is 14.1mm*12.1mm, and wall thickness is 2mm, and outside dimension is Φ 220mm, and material is 6061 aluminium alloys.Its welding step is as follows:
1.1 get a collection of aluminum rectangular tube material annulus part of welding that needs carries out stress relief annealing, and annealing temperature is 320 DEG C, and temperature retention time is 1h.Then at position to be welded bevel, groove type is monolateral chamfering 20 °, root face 1.2mm, and cleans out, the oxide within the scope of near sites 30mm to be welded and other impurity until expose metallic luster with steel wire lump.
1.2 configure NaOH solution and HNO respectively
3solution, NaOH solution mass concentration is 9%, and configuration temperature is 45 DEG C, HNO
3concentration of polymer solution is 30%, and configuration temperature is normal temperature.
1.3 with acetone wiping machinery clean out after aluminum rectangular tube annulus part and required welding wire, gage of wire is Ф 1.0mm, carries out degreasing process.Part to be welded after degreasing process and welding wire are immersed in NaOH solution, take out after 6min and put into water and rinse and remove the NaOH residue on surface of the work, then the part to be welded after cleaned and welding wire are immersed in HNO3 solution, take out after 2min and put into water and rinse and remove the HNO on surface of the work
3residue.
1.5 after the aluminum rectangular tube material annulus part that Chemical cleaning is good is air-dry, is placed on welding special tooling, ensures that butt seam is no more than 0.2mm, then weld.Welding adopts and exchanges metal argon arc welding, and welding parameter is electric current 88A, and protective gas adopts the argon gas of purity > 99.99%, and gas flow is 11 liters/min, and welding wire chooses 4043 aluminium alloy welding wires of Ф 1.0mm.
1.6 after first surface weld seam welds, reverse welding frock, carries out the welding of second, the 3rd and fourth face weld seam.
The part welded is placed in welding tooling by 1.7 to be cooled naturally, after joint to be welded solidifies completely, is taken out by aluminum rectangular tube material annulus part, completes weld parts.
Under the guidance of said welding method, throat thickness is that the 6061 aluminum alloy hollow annulus part welding qualities of 2mm are excellent, and the outside dimension deflection of annulus is little, and welding joint mechanical property and pore amount all meet instructions for use.
Embodiment 2
The material that the present embodiment is applied to welding is a kind of tube and pipe of aluminium alloy annulus part, and sectional dimension is Φ 20mm, and wall thickness is 2.2mm, and outside dimension is Φ 210mm, and material is 5A02 aluminium alloy.Its welding step is as follows:
2.1 get a collection of tube and pipe of aluminium alloy annulus part of welding that needs carries out stress relief annealing, and annealing temperature is 330 DEG C, and temperature retention time is 1.5h.Then at position to be welded bevel, groove type is monolateral chamfering 20 °, root face 1.2mm, and cleans out, the oxide within the scope of near sites 30mm to be welded and other impurity until expose metallic luster with steel wire lump.
2.2 configure NaOH solution and HNO respectively
3solution, NaOH solution mass concentration is 12%, and configuration temperature is 45 DEG C, HNO
3concentration of polymer solution is 40%, and configuration temperature is normal temperature.
2.3 with acetone wiping machinery clean out after tube and pipe of aluminium alloy annulus part and required welding wire, gage of wire is Ф 1.0mm, carries out degreasing process.Part to be welded after degreasing process and welding wire are immersed in NaOH solution, take out after 7min and put into water and rinse and remove the NaOH residue on surface of the work, then by the part to be welded after cleaned and welding wire immersion HNO
3in solution, take out after 1min and put into water and rinse and remove the HNO on surface of the work
3residue.
1.5 after the tube and pipe of aluminium alloy annulus part that Chemical cleaning is good is air-dry, is placed on welding special tooling, ensures that butt seam is no more than 0.2mm, then weld.Welding adopts and exchanges metal argon arc welding, and welding parameter is electric current 100A, and protective gas adopts the argon gas of purity > 99.99%, and gas flow is 11 liters/min, and welding wire chooses 5856 aluminium alloy welding wires of Ф 1.0mm.
Adopt rotary soldering tool during 1.6 welding, forming a solder can be realized to tube and pipe of aluminium alloy annulus part.The part welded is placed in welding tooling naturally cool, after joint to be welded solidifies completely, tube and pipe of aluminium alloy annulus part is taken out, completes weld parts.
Under the guidance of said welding method, throat thickness is that the 5A02 aluminum alloy hollow annulus part welding quality of 2.2mm is excellent, and the outside dimension deflection of annulus is little, and welding joint mechanical property and pore amount all meet instructions for use.
Claims (8)
1. a welding method for aluminum alloy hollow annulus part, comprises the steps:
(1) first, will the aluminum alloy hollow annulus part of welding be needed to carry out stress relief annealing;
(2) then at position to be welded bevel;
(3) with steel wire lump, the oxide within the scope of near sites 30mm to be welded and other impurity are cleaned out; Then, the aluminum alloy hollow annulus part after cleaning out with acetone wiping machinery and welding wire, carry out degreasing process, then at NaOH solution and HNO
3soak cleaning is carried out in solution;
(4) the aluminum alloy hollow annulus part after Chemical cleaning is placed on welding tooling, makes butt seam be 0-0.2mm, then weld;
(5) welding point solidifies completely to cooling, is taken out by aluminum alloy hollow annulus part, completes weld parts.
2. the welding method of aluminum alloy hollow annulus part according to claim 1, is characterized in that: in stress relief annealing, and annealing temperature is 300-350 DEG C, and temperature retention time is 1-2h.
3. the welding method of aluminum alloy hollow annulus part according to claim 1, is characterized in that: described groove type is monolateral chamfering 20 °, root face 1.2mm.
4. the welding method of aluminum alloy hollow annulus part according to claim 1, it is characterized in that: described Chemical cleaning be by degreasing process after part to be welded and welding wire immerse in NaOH solution, take out after 5-7min and put into water and rinse, then the part to be welded after cleaned and welding wire are immersed HNO
3in solution, take out after 1-2min and put into water and rinse.
5. the welding method of aluminum alloy hollow annulus part according to claim 4, is characterized in that: described NaOH solution mass concentration is 9-12%, and configuration temperature is 40-50 DEG C, HNO
3concentration of polymer solution is 30-40%, and configuration temperature is normal temperature.
6. the welding method of aluminum alloy hollow annulus part according to claim 1, it is characterized in that: described welding tooling is made up of patrix and counterdie, patrix is cover plate, counterdie is with the annulus die cavity with open circles ring same size, amplify cavity dimension at position while welding, whole welding tooling is 80 ° of-100 ° of arc sections.
7. the welding method of aluminum alloy hollow annulus part according to claim 1; it is characterized in that: when welding; joint style is docking; adopt and exchange metal argon arc welding; welding parameter is electric current 80-100A; protective gas adopts the argon gas of purity > 99.99%, and gas flow is 11 ± 3 liters/min.
8. the welding method of aluminum alloy hollow annulus part according to claim 1, is characterized in that: described welding adopts diameter to be the aluminium alloy welding wire of 1.0mm, and concrete composition is depending on mother metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693257.5A CN104708181A (en) | 2013-12-17 | 2013-12-17 | Welding method of aluminum alloy hollow annular part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693257.5A CN104708181A (en) | 2013-12-17 | 2013-12-17 | Welding method of aluminum alloy hollow annular part |
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| CN104708181A true CN104708181A (en) | 2015-06-17 |
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| CN201310693257.5A Pending CN104708181A (en) | 2013-12-17 | 2013-12-17 | Welding method of aluminum alloy hollow annular part |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002103A (en) * | 2016-06-22 | 2016-10-12 | 湖北三江航天江北机械工程有限公司 | Forming method for iron-based high-temperature alloy distributing ring |
| CN107781549A (en) * | 2017-11-21 | 2018-03-09 | 航天材料及工艺研究所 | A kind of hollow metal sealing structure |
| CN107876985A (en) * | 2017-10-19 | 2018-04-06 | 南京航空航天大学 | A kind of increasing material welding method of big thickness frame clsss metal parts |
| CN109967437A (en) * | 2018-11-26 | 2019-07-05 | 深圳市德惠电池材料有限公司 | A kind of easy welding electrode connection sheet blank treatment process |
| CN114345839A (en) * | 2021-12-28 | 2022-04-15 | 北京航星机器制造有限公司 | Method and system for cleaning longitudinal seam of titanium alloy cylinder |
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| CN103111731A (en) * | 2013-01-23 | 2013-05-22 | 北京赛德高科铁道电气科技有限责任公司 | Welding method for longitudinal butt joint of thin-wall aluminum alloy non-profile long pipes |
| CN101795790B (en) * | 2007-09-04 | 2013-06-19 | 通用电气公司 | Quench ring rim and methods for fabricating |
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| EP0470830A1 (en) * | 1990-08-07 | 1992-02-12 | Nippon Valqua Industries, Ltd. | Metallic hollow O-ring and process for producing same |
| JP2001153229A (en) * | 1999-11-30 | 2001-06-08 | Nichias Corp | Hollow metal o-ring |
| CN101795790B (en) * | 2007-09-04 | 2013-06-19 | 通用电气公司 | Quench ring rim and methods for fabricating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002103A (en) * | 2016-06-22 | 2016-10-12 | 湖北三江航天江北机械工程有限公司 | Forming method for iron-based high-temperature alloy distributing ring |
| CN107876985A (en) * | 2017-10-19 | 2018-04-06 | 南京航空航天大学 | A kind of increasing material welding method of big thickness frame clsss metal parts |
| CN107781549A (en) * | 2017-11-21 | 2018-03-09 | 航天材料及工艺研究所 | A kind of hollow metal sealing structure |
| CN107781549B (en) * | 2017-11-21 | 2019-09-06 | 航天材料及工艺研究所 | A kind of hollow metal sealing structure |
| CN109967437A (en) * | 2018-11-26 | 2019-07-05 | 深圳市德惠电池材料有限公司 | A kind of easy welding electrode connection sheet blank treatment process |
| CN114345839A (en) * | 2021-12-28 | 2022-04-15 | 北京航星机器制造有限公司 | Method and system for cleaning longitudinal seam of titanium alloy cylinder |
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