CN112296514A - Vertical multi-laser beam aluminum profile butt joint laser welding process - Google Patents
Vertical multi-laser beam aluminum profile butt joint laser welding process Download PDFInfo
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- CN112296514A CN112296514A CN201910709012.4A CN201910709012A CN112296514A CN 112296514 A CN112296514 A CN 112296514A CN 201910709012 A CN201910709012 A CN 201910709012A CN 112296514 A CN112296514 A CN 112296514A
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- laser
- butt joint
- aluminum profile
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- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
Abstract
The invention discloses a vertical multi-laser beam aluminum profile butt joint laser welding process, which comprises the following steps: welding the aluminum profile butt joint by adopting 2-10 groups of laser beams which are continuously output and move at a constant speed, wherein the laser beams are symmetrically arranged at two sides of the aluminum profile butt joint, the aluminum profile butt joint is perpendicular to the laser beams in the welding process, when the aluminum profile advances, the laser beams periodically swing relative to the aluminum profile butt joint, the swing track of each period is an infinity-shaped curve, and the swing tracks are symmetrically distributed relative to the axis. The invention adopts a plurality of laser beams which are continuously output and move at a uniform speed to weld the butt joint of the aluminum profile at the same time, can effectively control the depth and the deformation of the laser welding line to ensure that the welding line is smooth and beautiful, and the comprehensive mechanical property of the welding line is excellent.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a vertical multi-laser-beam aluminum profile butt joint laser welding process.
Background
Along with the increasing quality requirements of aluminum alloy furniture, products with the characteristics that the prior jointed boards cannot achieve high efficiency and attractive appearance are applied to the aluminum alloy of the furniture cabinet body in a large range, and the aluminum alloy has the advantages of small density, light volume, good corrosion resistance, fire prevention, insect prevention and the like and is widely applied to products such as furniture and the like. At present, aluminum alloy furniture is spliced by aluminum alloy, splicing gaps are multiple, efficiency is low, installation is troublesome, although whole aluminum furniture is provided, honeycomb plates or PVC aluminum plates are adhered by a large amount of glue to be separated from the environment protection and recovery value of the aluminum alloy furniture.
The light-weight ultra-wide section structure is usually spliced and welded before an aluminum alloy spliced plate part is assembled in place, the aluminum alloy spliced plate part can be tightly clamped in place in the assembling process, meanwhile, the influence of large energy deformation in the welding process on attractiveness is avoided, and therefore a clamping groove butt joint structure is usually adopted in the light-weight ultra-wide structural member joint form. The laser welding has the advantages of high energy density, high welding speed, small welding heat input, strong adaptability, easy realization of automation and the like, can meet the requirement of the aluminum alloy furniture cabinet plate with the ultra-wide section, is particularly suitable for welding materials with strict requirements on welding heat input or ultra-wide structures, but is lack of aluminum alloy at present, realizes the requirement that the aluminum alloy cabinet plate can be reached by finishing the ultra-wide section at one time through vertical multi-laser-beam butt laser welding, and becomes the bottleneck restricting the development of aluminum alloy furniture.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a vertical multi-laser-beam aluminum profile butt joint laser welding process, which realizes one-step completion of ultra-wide sections of aluminum alloy by vertical multi-laser-beam butt joint laser welding to meet the requirements of aluminum alloy cabinet body plates.
In order to solve the technical problems, the invention adopts the following technical scheme:
vertical many laser beams aluminium alloy butt joint laser welding process includes: welding the aluminum profile butt joint by adopting 2-10 groups of laser beams which are continuously output and move at a constant speed, wherein the laser beams are symmetrically arranged at two sides of the aluminum profile butt joint, the aluminum profile butt joint is perpendicular to the laser beams in the welding process, when the aluminum profile advances, the laser beams periodically swing relative to the aluminum profile butt joint, the swing track of each period is an infinity-shaped curve, and the swing tracks are symmetrically distributed relative to the axis.
Preferably, the laser power is 800-.
Preferably, the laser beam has a wobble frequency of 400-600Hz and a wobble amplitude of 1-2 mm.
Preferably, the welding is performed using an IPG fiber laser.
Preferably, the welding mode is self-fluxing welding, and the aluminum alloy is provided with bumps without filling metal welding rods.
Preferably, oxide skin and oil dirt on the surface of the aluminum profile butt joint workpiece within a range of 10mm-20mm away from the periphery of the center of the butt joint weld joint are washed until a white and bright metal body is exposed, and then the aluminum profile butt joint workpiece is wiped and cleaned up by alcohol.
Preferably, the weld is completed within 2 hours after the pre-weld cleaning, and if the weld is not completed within 2 hours, the pre-weld cleaning is performed again.
Preferably, the front side blow protection is performed by using inert gas during welding.
Preferably, 99.99% high-purity argon is adopted for front side blowing protection in the welding process, and the flow rate of the front side blowing is 8-12L/min.
Preferably, the aluminum profile is assembled and compressed by a vertical welding fixture before welding, so that butt welding seams are neat and flat.
The invention has the beneficial effects that: the invention adopts multiple laser beams which are continuously output and move at a uniform speed to weld the aluminum profile butt joint at one time to complete multiple welding seams, can effectively control the depth and deformation of the laser welding seams to enable the welding seams to be smooth and attractive, and has excellent comprehensive mechanical properties of the welding seams.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a swing track according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The oscillation locus of each period of fig. 1 is an "∞" shaped curve, (h represents the distance; the oscillation frequency is the number of oscillation loci in each period), and the oscillation loci are symmetrically distributed relative to the axis.
Example one
And welding a 6063-T5 aluminum profile butt joint, wherein the joint thickness is 1mm, the profile thickness is 1mm, and the material state of the aluminum profile 6063-T5 is an annealing state.
2 groups of laser beams which are continuously output and move at a constant speed are adopted to weld the aluminum alloy butt joint, before welding, oxide skin and oil dirt on the surface of the 6063-T5 aluminum profile butt joint within a range of 10mm-20mm away from the periphery of the center of the butt joint welding line are pickled until a white and bright metal body is exposed, and then the aluminum alloy butt joint is wiped and cleaned by alcohol; the laser beams are symmetrically arranged on two sides of the aluminum profile butt joint, the aluminum profile butt joint is perpendicular to the laser beams in the welding process, when the aluminum profile advances, the laser beams periodically swing relative to the aluminum profile butt joint, the swing track of each period is an infinity-shaped curve, and the swing tracks are symmetrically distributed relative to the axis; the laser power is 800W, the welding speed is 2500mm/min, the laser incidence angle is 7 degrees, the spot diameter is 0.3mm, the defocusing amount is-2 mm, the laser frequency is 400Hz, the amplitude is 1mm, the front side blowing protection is carried out by adopting 99.99 percent high-purity argon in the welding process, and the front side gas flow is 8L/min.
Welding results surface: the surface of the welding line is well formed, does not deform, is flat and attractive, and meets the requirement of standard I-level welding line of Q/SB535-2013 technical conditions for aluminum alloy laser welding according to inspection.
Example two
And welding a 6063-T5 aluminum profile butt joint, wherein the joint thickness is 1.5mm, the profile thickness is 1.5mm, and the aluminum profile 6063-T5 material state is an annealing state.
Welding the aluminum profile butt joint by adopting 6 groups of laser beams which are continuously output and move at a constant speed, pickling oxide skins and oil stains on the surface of the 6063-T5 aluminum profile butt joint within a range of 10-20 mm away from the periphery of the center of the butt joint welding line before welding until white and bright metal bodies are exposed, and wiping and cleaning the aluminum profile butt joint by using alcohol; the laser beams are symmetrically arranged on two sides of the aluminum profile butt joint, the aluminum profile butt joint is perpendicular to the laser beams in the welding process, when the aluminum profile advances, the laser beams periodically swing relative to the aluminum profile butt joint, the swing track of each period is an infinity-shaped curve, and the swing tracks are symmetrically distributed relative to the axis; the laser power is 1000W, the welding speed is 3000mm/min, the laser incident angle is 10 degrees, the spot diameter is 0.3mm, the defocusing amount is 0mm, the laser frequency is 500Hz, the amplitude is 1.5mm, the front side blowing protection is carried out by adopting 99.99 percent high-purity argon in the welding process, and the front side gas flow is 10L/min.
Welding results surface: the surface of the welding line is well formed, does not deform, is flat and attractive, and meets the requirement of standard I-level welding line of Q/SB535-2013 technical conditions for aluminum alloy laser welding according to inspection.
EXAMPLE III
And welding a 6063-T5 aluminum profile butt joint, wherein the joint thickness is 2.5mm, the profile thickness is 2.5mm, and the aluminum profile 6063-T5 material state is an annealing state.
Welding the aluminum profile butt joint by adopting 10 groups of laser beams which are continuously output and move at a constant speed, pickling oxide skins and oil stains on the surface of the 6063-T5 aluminum profile butt joint within a range of 10-20 mm away from the periphery of the center of the butt joint welding line before welding until white and bright metal bodies are exposed, and wiping and cleaning the aluminum profile butt joint by using alcohol; the laser beams are symmetrically arranged on two sides of the aluminum profile butt joint, the aluminum profile butt joint is perpendicular to the laser beams in the welding process, when the aluminum profile advances, the laser beams periodically swing relative to the aluminum profile butt joint, the swing track of each period is an infinity-shaped curve, and the swing tracks are symmetrically distributed relative to the axis; the laser power is 1220W, the welding speed is 3800mm/min, the laser incident angle is 12 degrees, the spot diameter is 0.3mm, the defocusing amount is 2mm, the laser frequency is 600Hz, the amplitude is 2mm, the front side blowing protection is carried out by adopting 99.99 percent high-purity argon in the welding process, and the front side gas flow is 12L/min.
Welding results surface: the surface of the welding line is well formed, does not deform, is flat and attractive, and meets the requirement of standard I-level welding line of Q/SB535-2013 technical conditions for aluminum alloy laser welding according to inspection.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. Vertical many laser beams aluminium alloy butt joint laser welding process, its characterized in that includes: welding the aluminum profile butt joint by adopting 2-10 groups of laser beams which are continuously output and move at a constant speed, wherein the laser beams are symmetrically arranged at two sides of the aluminum profile butt joint, the aluminum profile butt joint is perpendicular to the laser beams in the welding process, when the aluminum profile advances, the laser beams periodically swing relative to the aluminum profile butt joint, the swing track of each period is an infinity-shaped curve, and the swing tracks are symmetrically distributed relative to the axis.
2. The vertical multi-laser beam aluminum profile butt joint laser welding process as claimed in claim 1, wherein the laser power is 800-.
3. The laser welding process of the vertical multi-laser-beam aluminum profile butt joint as claimed in claim 1, wherein the swing frequency of the laser beam is 400-600Hz, and the swing amplitude is 1-2 mm.
4. The vertical multi-laser beam aluminum profile butt joint laser welding process according to claim 1, wherein an IPG fiber laser is used for welding.
5. The vertical multi-laser beam aluminum profile butt joint laser welding process as claimed in claim 1, wherein the welding mode is self-fusion welding, and aluminum alloy with salient points is not filled with metal welding rods.
6. The laser welding process of the vertical multi-laser-beam aluminum profile butt joint according to claim 1, characterized in that oxide skin and oil dirt in a range of 10mm-20mm from the periphery of the center of the butt weld on the surface of the aluminum alloy clamping groove butt joint workpiece are pickled to expose a white and bright metal body, and then the white and bright metal body is cleaned by alcohol wiping.
7. The vertical multi-laser beam aluminum profile butt joint laser welding process according to claim 1, wherein the welding is completed within 2 hours after the pre-welding cleaning, and if the welding is not completed within 2 hours, the pre-welding cleaning is performed again.
8. The vertical multi-laser beam aluminum profile butt joint laser welding process as claimed in claim 1, wherein the front side blowing protection is performed by using inert gas during the welding process.
9. The vertical multi-laser beam aluminum profile butt joint laser welding process as claimed in claim 1, wherein 99.99% high purity argon is used for front side blowing protection during welding, and the front side blowing flow is 8-12L/min.
10. The vertical multi-laser-beam aluminum profile butt joint laser welding process as claimed in claim 1, wherein a vertical clamp is adopted to assemble and compress the aluminum profile before welding, so that butt welding seams are neat and flat.
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| CN201910709012.4A CN112296514A (en) | 2019-08-01 | 2019-08-01 | Vertical multi-laser beam aluminum profile butt joint laser welding process |
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| CN201910709012.4A CN112296514A (en) | 2019-08-01 | 2019-08-01 | Vertical multi-laser beam aluminum profile butt joint laser welding process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115958296A (en) * | 2023-03-08 | 2023-04-14 | 北京航星机器制造有限公司 | Welding forming method for AlSi10Mg aluminum alloy structural member by selective laser melting forming |
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Cited By (1)
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| CN115958296A (en) * | 2023-03-08 | 2023-04-14 | 北京航星机器制造有限公司 | Welding forming method for AlSi10Mg aluminum alloy structural member by selective laser melting forming |
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Application publication date: 20210202 |