CN106735903A - A kind of finned tube welding method and system - Google Patents
A kind of finned tube welding method and system Download PDFInfo
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- CN106735903A CN106735903A CN201611135587.2A CN201611135587A CN106735903A CN 106735903 A CN106735903 A CN 106735903A CN 201611135587 A CN201611135587 A CN 201611135587A CN 106735903 A CN106735903 A CN 106735903A
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- welded
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- tubing
- finned tube
- welding
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Classifications
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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
- B23K26/24—Seam welding
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- 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
- B23K26/60—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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention provides a kind of finned tube welding method, and methods described includes：The impurity of fin and tube surfaces to be welded is removed, and the fin and tubing to be welded are arranged on clamping device；Plumb joint is connected to the fiber-optic output of fiber coupled laser diode, and adjusts the position to be welded of the fin and tubing to be welded the distance between to the plumb joint；Launch class Gauss multi-mode laser light beam using the fiber coupled laser diode, and the laser beam is converged at into the fin and welded with the position to be welded of tubing to be welded.The present invention also provides a kind of finned tube welding system, based on finned tube welding method and system that the present invention is provided, welding efficiency can be greatly improved while welding penetration between fin surface welding quality and fin and tubing to be welded is ensured, reduce manufacturing cost.
Description
Technical field
The present invention relates to finned tube welding field, more particularly to a kind of finned tube welding method and system.
Background technology
Finned tube is widely used in the heat exchanging pipe pipeline in industrial each field such as electric power, cement, metallurgy, chemical industry, passes through
In the method that pipe outer surface increases fin, the contact area of thermal medium is greatly improved, improve heat exchanger effectiveness.With for wing
The raising of piece pipe performance requirement, welding performance requirement (weld strength, fusion penetration, surface defect, efficiency) for fin is also but come
It is higher.The manufacturing process of finned tube mainly includes：Roll forming finned tube, high frequency welded fin-tube, casting finned tube, tension force winding
Finned tube, empiecement pipe, YAG laser welding finned tubes.The scheme being wherein most widely used at present be roll forming finned tube and
High frequency welded fin-tube.
Tubing is directly formed to finned tube by roll forming finned tube using the scheme of roll rolling.Due to tubing and outward
The integraty of portion's fin, this method has the bond strength of good fin.But because it uses roll compression in tubing
On plastic deformation be molded, therefore its finned tube that can be produced spacing of fin can not too small, fin height can not mistake
Height, production efficiency is too low, particularly with the fin tube material of high intensity, difficult forming.
The electric current that high frequency welded fin-tube passes through the applying high frequency between tubing and fin, using the kelvin effect of electric current in pipe
The nearly outer surface of material and the root of fin produce high-temperature soldering shaping, with efficiency (welding linear velocity) very high, but for
The finned tube of high request, due to the shallow poor bonding strength of the welding penetration of the method, (austenitic stainless steel welding tensile strength exists
170Mpa or so), while used as a kind of method of Contact welding, face of weld is of poor quality, impurity is more, easily produce weld defect to enter
And influence heat exchanger effectiveness.
In recent years during the technical study of high-quality welding finned tube, occur in that direct using pulsed YAG laser
The finned tube welding scheme of (hard light path) is exported, the welding quality of fin is substantially increased, with very outstanding solder bond
Intensity, but there is a problem of that YAG laser photoelectric transformation efficiency is low (＜ 15%), cause unit weld length energy consumption to be brought
Cost increase, speed of welding be limited.Hard light path is used simultaneously, and the flexibility of welding equipment is poor, it is impossible to meet various structure and specifications
Finned tube welding.
Therefore, how to provide it is a kind of be capable of efficient stable, be adapted to the high welding quality of major part finned tube dimensions
Finned tube fin welding method be always technical barrier that the field is paid close attention to the most.
The content of the invention
In view of this, it is an object of the invention to provide a kind of finned tube welding based on fiber coupled laser diode
Method, makes full use of the advantage of semiconductor laser photoelectric transformation efficiency (about 50%) high, by contactless welding method
And system, while welding penetration between fin surface welding quality and fin and tubing to be welded is ensured, greatly improve
Welding efficiency, reduces manufacturing cost.Also, the present invention is using fiber coupled laser diode as light source, i.e. soft light road
Mode, can significantly improve the flexibility of welding, can complete the welding process of various complicated shapes, before wide market
Scape.
Technical scheme is as follows：
The present invention provides a kind of finned tube welding method, and methods described includes：Remove fin and tube surfaces to be welded
Impurity, and the fin and tubing to be welded are arranged on clamping device；Plumb joint is connected into fiber coupling semiconductor to swash
The fiber-optic output of light device, sets the position to be welded of the fin and tubing to be welded the distance between to the plumb joint；
Launch class Gauss multi-mode laser light beam using the fiber coupled laser diode, the laser beam is converged at into the wing
Piece is welded with the position to be welded of tubing to be welded.
In such scheme, the distance between position to be welded of the fin and tubing to be welded to the plumb joint is
10mm-80mm。
It is described laser beam is converged at into the fin to be welded with the position to be welded of tubing to be welded in such scheme
Connect, specifically include：The plumb joint is set to no more than 88 ° with the axial angle of tubing to be welded, according to the fin with
The thickness regulation spot diameter of the tubing to be welded is 0.6mm-2.0mm and welding linear velocity is 20mm/s-120mm/s,
The class Gauss multi-mode laser light beam that the fiber coupled laser diode is launched is converged at into the fin with tubing to be welded
Position to be welded welded.
In such scheme, the power output of the fiber coupled laser diode is 600W-1400W, the optical fiber coupling
The wavelength for closing semiconductor laser is 800nm-1100nm.
In such scheme, methods described also includes：When being welded, in fin and the position to be welded of tubing to be welded
Inert gas is blown into be protected.
The present invention also provides a kind of finned tube welding system, and the system includes：Fiber coupled laser diode, clamping
Device, plumb joint；Wherein, the fiber coupled laser diode, for launching class Gauss multi-mode laser light beam as light source；
The clamping device, the fin and tubing to be welded of surface impurity have been removed for fixation；The optical-fiber coupling semiconductor laser
Utensil has fiber-optic output, and the plumb joint is connected to the fiber-optic output, for welding finned tube.
In such scheme, the plumb joint, specifically for the class Gauss for launching the fiber coupled laser diode
Multi-mode laser light beam converges at the fin and the position to be welded of tubing to be welded is welded.
In such scheme, the power output of the fiber coupled laser diode is 600W-1400W, the optical fiber coupling
The wavelength for closing semiconductor laser is 800nm-1100nm.
In such scheme, the distance between position to be welded of the fin and tubing to be welded to the plumb joint is
10mm-80mm, the plumb joint is not more than 88 °, the fiber coupled laser diode with the axial angle of tubing to be welded
The spot diameter for launching laser beam is 0.6mm-2.0mm, and welding linear velocity is 20mm/s-120mm/s.
In such scheme, the system also includes blowning installation, arrangements for speed regulation；The blowning installation, for being welded
When connecing, it is blown into inert gas in the position to be welded of finned tube and tubing to be welded and is protected；The arrangements for speed regulation and fin
Pipe is connected, for by adjusting adjustment of the rotating speed realization of itself to sealing wire speed.
Based on the finned tube welding method that the present invention is provided, following Advantageous Effects can be at least up to：
1) non-contact welding method based on semiconductor laser, substantially increases welding quality；The guarantor of inert gas
Shield effectively promotes the lasting weld seam that uniform and non-oxidation layer is formed in face of weld；
2) semiconductor laser photoelectric transformation efficiency is (about 50%) high, and power is big, the welding efficiency in the case where continuously optical mode is gone out
Height, substantially increases speed of production, reduces cost；
3) fiber coupled laser diode of the present invention goes out optical mode, energy density collection using class Gauss multimode
In, fusion penetration is larger in metal welding, and the maximum fusion penetration that the present invention provides technical scheme can reach tube wall thickness to be welded
80%；
4) fiber coupling formula semiconductor laser, with technique applicability higher, can realize most winglet as light source
The finned tube welding of piece spacing 1.5mm, promotion prospect is than broader.
Brief description of the drawings
Fig. 1 is the basic structure of finned tube.
Fig. 2 is that finned tube welding system of the present invention constitutes structural representation.
Description of reference numerals：1 is finned tube, and 2 is fiber coupled laser diode, and 3 is optical fiber, and 4 is plumb joint, and 5 are
Laser beam, 6 is welding pool.
Specific embodiment
Principle of the invention is：Flexible welding is realized as light source based on fiber coupled laser diode, with noncontact
The welding method of formula, realizes the high-quality welding of fin and tubing to be welded.
Finned tube welding method provided by the present invention and system can adapt in materials such as iron, copper, aluminium, titanium and its alloys
Finned tube welding.
Technical scheme is described further below by way of specific embodiment.
Embodiment one
Fin material selects 316L stainless steels, thickness 0.5mm, height 10mm；Pipe material selection 316L to be welded is stainless
Steel, specification 20 × 1.2mm of φ, welding process is comprised the following steps：
(1) impurity such as greasy dirt of fin and tube surfaces to be welded are removed, makes the fin and the tube surfaces to be welded be in
Existing uniform metallic luster.
(2) tubing to be welded for treating step (1) is installed on clamping device with fin, in the fiber coupling half
The fiber-optic output connecting welding head of conductor laser light source, by the position to be welded of the fin and tubing to be welded described in
The distance between plumb joint is set to 25mm.
(3) according to the fin and the thickness of the tubing to be welded, adjust fiber coupled laser diode and send light
The parameters such as the diameter and welding linear velocity of spot.
In the present embodiment, the spot diameter is 0.8mm, and the plumb joint is 80 ° with the axial angle of tubing to be welded；
The power output for selecting fiber coupled laser diode is 600W, and it is 35mm/s, the fiber coupling to set welding linear velocity
Semiconductor laser output wavelength is 808nm, and laser beam is class Gauss multimode.
The finned tube can realize that finned tube is moved by device and motor connections such as chucks by the rotating speed for changing motor
The change of speed, and then change the welding linear velocity of finned tube.
(4) according to the above-mentioned parameter for setting, hot spot is converged at the position to be welded of the fin and tubing to be welded
Welded, and in welding, nitrogen protection is blown into position to be welded.
The class Gauss multi-mode laser light beam that fiber coupled laser diode sends acts on fin and tubing to be welded
Position to be welded, the energy of laser beam forms uniform laser weld pools and completes welding in this position.
Embodiment two
Fin material selects 444 stainless steels, thickness 0.5mm, height 5mm；Pipe material to be welded selects 316L stainless steels,
Specification 20 × 1.2mm of φ, welding process is comprised the following steps：
(1) impurity such as greasy dirt of fin and tube surfaces to be welded are removed, makes the fin and the tube surfaces to be welded be in
Existing uniform metallic luster.
(2) tubing to be welded for treating step (1) is installed on clamping device with fin, in the fiber coupling half
The fiber-optic output connecting welding head of conductor laser light source, by the position to be welded of the fin and tubing to be welded described in
The distance between plumb joint is set to 15mm.
(3) according to the fin and the thickness of the tubing to be welded, adjust fiber coupled laser diode and send light
The parameters such as the diameter and welding linear velocity of spot.
In the present embodiment, the spot diameter is 0.6mm, and the plumb joint is 85 ° with the axial angle of tubing to be welded；
The power output for selecting fiber coupled laser diode is 1200W, and it is 100mm/s, the optical fiber coupling to set welding linear velocity
It is 1055nm to close semiconductor laser output wavelength, and laser beam is class Gauss multimode.
The finned tube can realize that finned tube is moved by device and motor connections such as chucks by the rotating speed for changing motor
The change of speed, and then change the welding linear velocity of finned tube.
(4) according to the above-mentioned parameter for setting, hot spot is converged at into fin is carried out with the position to be welded of tubing to be welded
Welding, and in welding, argon gas protection is blown into position to be welded.
The class Gauss multi-mode laser light beam that fiber coupled laser diode sends acts on fin and tubing to be welded
Position to be welded, the energy of laser beam forms uniform laser weld pools and completes welding in this position.
Embodiment three
Fin material selects biphase titanium alloy TC4, thickness 0.5mm, height 10mm；Pipe material to be welded selects TC4, rule
Lattice 25 × 1.5mm of φ, welding process is comprised the following steps：
(1) impurity such as greasy dirt of fin and tube surfaces to be welded are removed, makes the fin and the tube surfaces to be welded be in
Existing uniform metallic luster.
(2) tubing to be welded for treating step (1) is installed on clamping device with fin, in the fiber coupling half
The fiber-optic output connecting welding head of conductor laser light source, by the position to be welded of the fin and tubing to be welded described in
The distance between plumb joint sets 35mm.
(3) according to the fin and the thickness of the tubing to be welded, adjust fiber coupled laser diode and send light
The parameters such as the diameter and welding linear velocity of spot.
In the present embodiment, the spot diameter is 0.8mm, and the plumb joint is 78 ° with the axial angle of tubing to be welded；
The power output for selecting fiber coupled laser diode is 1100W, and it is 85mm/s, the fiber coupling to set welding linear velocity
Semiconductor laser output wavelength is 1064nm, and laser beam is class Gauss multimode.
The finned tube can realize that finned tube is moved by device and motor connections such as chucks by the rotating speed for changing motor
The change of speed, and then change the welding linear velocity of finned tube.
(4) according to the above-mentioned parameter for setting, hot spot is converged at into fin is carried out with the position to be welded of tubing to be welded
Welding, and in welding, Ar is blown into position to be welded：He=80:20vol%'s is mixed gas protected.
The class Gauss multi-mode laser light beam that fiber coupled laser diode sends acts on fin and tubing to be welded
Position to be welded, the energy of laser beam forms uniform laser weld pools and completes welding in this position.
The comparative example of two groups of other welding methods given below：
Comparative example one
Fin material selects 316L stainless steels, thickness 0.5mm, height 10mm；Pipe material selection 316L to be welded is stainless
Steel, specification 20 × 1.2mm of φ, using high frequency soldering method.
Welding performance test result is shown in Table 1.
Comparative example two
Fin material selects 316L stainless steels, thickness 0.5mm, height 10mm；Pipe material selection 316L to be welded is stainless
Steel, specification 20 × 1.2mm of φ, using YAG pulse laser methods.
Welding performance test result is shown in Table 1.
The welding comparing result of each embodiment of table 1 and comparative example
By table 1, it is apparent that being used as based on fiber coupled laser diode by provided in an embodiment of the present invention
The finned tube welding method of light source, can reach the welding effect of highly significant, and with welding quality higher, (rate of deposition exists
More than 94%, the weld seam tensile strength of embodiment three is about 2 times of comparative example two).
Further, by the data in observation table 1, we can draw：It is equal in fin material and pipe material to be welded
In the case of for 316L, existing welding side is substantially better than according to the various welding indexs that welding method of the present invention test is obtained
Method.
The present invention also provides a kind of finned tube welding system, and the system includes：Fiber coupled laser diode 2, folder
Hold device, plumb joint 4；Wherein, the fiber coupled laser diode 2, for launching class Gauss multi-mode laser as light source
Light beam 5；The clamping device, for the fixed fin and tubing to be welded for removing surface impurity；The fiber coupling semiconductor
Laser 2 has the output end of optical fiber 3, and the plumb joint 4 is connected to the output end of the optical fiber 3, for welding finned tube.
The fiber coupled laser diode has power control system and circulating water cooling system.
Further, the plumb joint 4, specifically for the class Gauss for launching the fiber coupled laser diode 2
Multi-mode laser light beam 5 converges at the fin and the position to be welded of tubing to be welded is welded, and sees welding pool 6.
Specifically, the power output of the fiber coupled laser diode 2 is 600W-1400W, the fiber coupling half
The wavelength of conductor laser 2 is 800nm-1100nm.
The position to be welded of the fin and tubing to be welded to the distance between the plumb joint 4 be 10mm-80mm, institute
State plumb joint 4 and adjusted with the axial angle of tubing to be welded and be not more than 88 °, the transmitting laser of the fiber coupled laser diode 2
The spot diameter of light beam 5 is 0.6mm-2.0mm, and welding linear velocity is 20mm/s-120mm/s.
Further, the finned tube welding system can also include blowning installation, arrangements for speed regulation, the blowning installation,
For when being welded, being blown into inert gas in the position to be welded of finned tube and tubing to be welded and being protected.The tune
Speed variator is connected with finned tube 1, for by adjusting adjustment of the rotating speed realization of itself to sealing wire speed.
Specifically, the arrangements for speed regulation can be a motor, the finned tube is led to by device and motor connections such as chucks
Crossing the rotating speed of change motor can realize the change of finned tube translational speed, and then change the welding linear velocity of finned tube 1.
The inert gas can be included but is not limited to：Nitrogen, argon gas, helium etc., and any ratio of above-mentioned any combination
The mixed gas of example.
The above, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention.For
For those skilled in the art, the present invention can have various modifications and variations.All institutes within the spirit and principles in the present invention
Any modification, equivalent substitution and improvements done etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of finned tube welding method, it is characterised in that methods described includes：Remove the miscellaneous of fin and tube surfaces to be welded
Matter, and the fin and tubing to be welded are arranged on clamping device；Plumb joint is connected to optical-fiber coupling semiconductor laser
The fiber-optic output of device, sets the position to be welded of the fin and tubing to be welded the distance between to the plumb joint；Profit
Launch class Gauss multi-mode laser light beam with the fiber coupled laser diode, the laser beam is converged at into the fin
Position to be welded with tubing to be welded is welded.
2. finned tube welding method according to claim 1, it is characterised in that the fin and tubing to be welded it is to be welded
It is 10mm-80mm that the distance between described plumb joint is arrived in socket part position.
3. finned tube welding method according to claim 1, it is characterised in that described that laser beam is converged at into the wing
Piece is welded with the position to be welded of tubing to be welded, is specifically included：The plumb joint is pressed from both sides with the axial direction of tubing to be welded
Angle is set to no more than 88 °, and it is 0.6mm- to adjust spot diameter according to the fin and the thickness of the tubing to be welded
2.0mm and welding linear velocity are 20mm/s-120mm/s, and the class Gauss that the fiber coupled laser diode is launched is more
Mould laser beam converges at the fin and is welded with the position to be welded of tubing to be welded.
4. finned tube welding method according to claim 1, it is characterised in that the fiber coupled laser diode
Power output is 600W-1400W, and the wavelength of the fiber coupled laser diode is 800nm-1100nm.
5. the finned tube welding method according to any one of Claims 1-4, it is characterised in that methods described also includes：
When being welded, it is blown into inert gas in the position to be welded of fin and tubing to be welded and is protected.
6. a kind of finned tube welding system, it is characterised in that the system includes：Fiber coupled laser diode, clamping dress
Put, plumb joint；Wherein, the fiber coupled laser diode, for launching class Gauss multi-mode laser light beam as light source；Institute
Clamping device is stated, the fin and tubing to be welded of surface impurity have been removed for fixation；The fiber coupled laser diode
With fiber-optic output, the plumb joint is connected to the fiber-optic output, for welding finned tube.
7. system according to claim 6, it is characterised in that the plumb joint, specifically for by the fiber coupling half
The class Gauss multi-mode laser light beam of conductor laser transmitting converges at the fin and the position to be welded of tubing to be welded to be carried out
Welding.
8. system according to claim 6, it is characterised in that the power output of the fiber coupled laser diode is
600W-1400W, the wavelength of the fiber coupled laser diode is 800nm-1100nm.
9. system according to claim 6, it is characterised in that the position to be welded of the fin and tubing to be welded to institute
The distance between plumb joint is stated for 10mm-80mm, the plumb joint and the axial angle of tubing to be welded are not more than 88 °, described
The spot diameter of fiber coupled laser diode transmitting laser beam is 0.6mm-2.0mm, and welding linear velocity is 20mm/s-
120mm/s。
10. the system according to any one of claim 6 to 9, it is characterised in that the system also includes blowning installation, adjusts
Speed variator；The blowning installation, for when being welded, inertia being blown into the position to be welded of finned tube and tubing to be welded
Gas is protected；The arrangements for speed regulation are connected with finned tube, for being realized to sealing wire speed by adjusting the rotating speed of itself
The adjustment of degree.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611135587.2A CN106735903B (en) | 2016-12-12 | 2016-12-12 | A kind of finned tube welding method and system |
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| CN201611135587.2A CN106735903B (en) | 2016-12-12 | 2016-12-12 | A kind of finned tube welding method and system |
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| CN106735903A true CN106735903A (en) | 2017-05-31 |
| CN106735903B CN106735903B (en) | 2018-07-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792473A (en) * | 2021-01-29 | 2021-05-14 | 邢美华 | Manufacturing and processing method of boiler economizer |
| CN114178340A (en) * | 2021-12-06 | 2022-03-15 | 江阴博圣热能科技有限公司 | Laser welding aluminum finned tube and processing technology thereof |
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| US4969255A (en) * | 1987-08-11 | 1990-11-13 | KM-Schmole GmbH | Apparatus for producing heat exchanger tubes |
| JPH10166047A (en) * | 1996-12-04 | 1998-06-23 | Matsushita Refrig Co Ltd | Fixing device of spiral fin |
| US6300591B1 (en) * | 2000-03-23 | 2001-10-09 | Sandia Corporation | Method for laser welding a fin and a tube |
| CN106040778A (en) * | 2016-08-12 | 2016-10-26 | 东莞市奥信激光焊接设备有限公司 | High-power continuous fiber laser-based hot-drawing, molding and welding apparatus for spiral fin coil |
| CN206351299U (en) * | 2016-12-12 | 2017-07-25 | 镭蒙（苏州）微光学科技有限公司 | A kind of finned tube welding system |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4969255A (en) * | 1987-08-11 | 1990-11-13 | KM-Schmole GmbH | Apparatus for producing heat exchanger tubes |
| JPH10166047A (en) * | 1996-12-04 | 1998-06-23 | Matsushita Refrig Co Ltd | Fixing device of spiral fin |
| US6300591B1 (en) * | 2000-03-23 | 2001-10-09 | Sandia Corporation | Method for laser welding a fin and a tube |
| CN106040778A (en) * | 2016-08-12 | 2016-10-26 | 东莞市奥信激光焊接设备有限公司 | High-power continuous fiber laser-based hot-drawing, molding and welding apparatus for spiral fin coil |
| CN206351299U (en) * | 2016-12-12 | 2017-07-25 | 镭蒙（苏州）微光学科技有限公司 | A kind of finned tube welding system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792473A (en) * | 2021-01-29 | 2021-05-14 | 邢美华 | Manufacturing and processing method of boiler economizer |
| CN112792473B (en) * | 2021-01-29 | 2022-09-06 | 哈尔滨团结锅炉集团有限公司 | Manufacturing and processing method of boiler economizer |
| CN114178340A (en) * | 2021-12-06 | 2022-03-15 | 江阴博圣热能科技有限公司 | Laser welding aluminum finned tube and processing technology thereof |
| CN114178340B (en) * | 2021-12-06 | 2024-02-06 | 江阴博圣热能科技有限公司 | Laser welding aluminum finned tube and processing technology thereof |
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| Publication number | Publication date |
|---|---|
| CN106735903B (en) | 2018-07-17 |
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