CN103801831B - Pulse laser welding connection device and pulse laser welding method - Google Patents
Pulse laser welding connection device and pulse laser welding method Download PDFInfo
- Publication number
- CN103801831B CN103801831B CN201310629142.XA CN201310629142A CN103801831B CN 103801831 B CN103801831 B CN 103801831B CN 201310629142 A CN201310629142 A CN 201310629142A CN 103801831 B CN103801831 B CN 103801831B
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- Prior art keywords
- pulse
- laser
- pulsewidth
- adjusting circuit
- stage
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- 238000003466 welding Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 abstract description 14
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 230000008025 crystallization Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/707—Auxiliary equipment for monitoring laser beam transmission optics
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a kind of pulse laser welding connection device and pulse laser welding method, described pulse laser welding connection device comprises control unit, seed laser unit, pulse adjusting circuit and laser emission element, described seed laser unit and described control unit, pulse adjusting circuit connects, described seed laser unit launches seed laser to described pulse adjusting circuit, described pulse adjusting circuit is connected with described control unit with the pulse of seed laser according to the Signal Regulation of described control unit, described laser emission element be connected with described pulse adjusting circuit with by the Laser emission after regulating to welding position.Pulse laser welding connection device provided by the present invention and pulse laser welding method, can enable the crystallization more fully of weld molten metal, thus make the intensity of weld seam higher.<pb pnum="1" />
Description
Technical field
The present invention relates to laser weld field, be specifically related to a kind of pulse laser welding connection device and pulse laser welding method.
Background technology
In recent years, laser is widely used in manufacturing industry, particularly welds, cuts and the field such as surface treatment.Because precision is high, speed is fast, and thermal strain on workpiece is less, and therefore laser welding technology has more and more consequence at welding field.When the welding of some metalworks, prior art continues the laser of transmitting certain hour length by metal molten to weld often, then stops Emission Lasers, metal is cooled, thus completes welding.But due to the metal suddenly cold and hot of weld, therefore during cooling, crystallization is bad, causes the intensity of weld seam not high, have impact on welding quality.
Summary of the invention
In view of this, the present invention aims to provide the higher pulse laser welding connection device of a kind of welding quality and pulse laser welding method.
One aspect of the present invention provides a kind of pulse laser welding connection device, it comprises control unit, seed laser unit, pulse adjusting circuit and laser emission element, described seed laser unit is connected with described control unit, pulse adjusting circuit, described seed laser unit launches seed laser to described pulse adjusting circuit, described pulse adjusting circuit is connected with described control unit with the pulse of seed laser according to the Signal Regulation of described control unit, described laser emission element be connected with described pulse adjusting circuit with by the Laser emission after regulating to welding position.
Preferably, laser after described adjustment has pulsewidth T1 and the pulse spacing is T2 in the first stage, in second stage, there is pulsewidth T3 and pulse spacing T2, in the phase III, there is pulsewidth T3 and pulse spacing T4, described pulsewidth T3 is less than described pulsewidth T1, and described pulse spacing T4 is greater than described pulse spacing T2.
Preferably, the time span of described first stage, second stage, phase III increases progressively.
Preferably, described pulse adjusting circuit comprises laserresonator, and the chamber of described pulse adjusting circuit laserresonator according to the Signal Regulation of described control unit is long.
Preferably, also comprise collimation unit, described collimation unit is connected with described laser emission element to make described laser emission element aim at welding position.
The present invention also provides a kind of pulse laser welding method on the other hand, and it comprises the steps:
Produce seed laser;
The pulse of described seed laser is regulated;
Laser emission after regulating is welded to welding position.
Preferably, laser after described adjustment has pulsewidth T1 and the pulse spacing is T2 in the first stage, in second stage, there is pulsewidth T3 and pulse spacing T2, in the phase III, there is pulsewidth T3 and pulse spacing T4, described pulsewidth T3 is less than described pulsewidth T1, and described pulse spacing T4 is greater than described pulse spacing T2.
Preferably, the time span of described first stage, second stage, phase III increases progressively.
Pulse laser welding connection device provided by the present invention and pulse laser welding method, can enable the crystallization more fully of weld molten metal, thus make the intensity of weld seam higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pulse laser welding connection device of the embodiment of the present invention.
Fig. 2 is the pulse schematic diagram of the laser that the embodiment of the present invention is launched when welding.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Please refer to Fig. 1, the embodiment of the present invention provides a kind of pulse laser welding connection device 10, and it comprises control unit 10, seed laser unit 12, pulse adjusting circuit 13 and laser emission element 14.
Seed laser unit 12 is connected with control unit 11, pulse adjusting circuit 13.When starting to weld, seed laser unit 12 launches seed laser according to the control instruction of control unit 11 to pulse adjusting circuit 13, and seed laser is pulse laser, has fixing pulsewidth and pulse spacing.
Pulse adjusting circuit 13 is connected with control unit 11 with the pulse of the Signal Regulation seed laser according to control unit 11.Specifically, control unit 11 can store predetermined control strategy, and sends control signal according to this control strategy to pulse adjusting circuit 13.Pulse adjusting circuit 13 regulates pulsewidth and the pulse spacing of seed laser according to control signal, and by the Laser emission after adjustment to laser emission element 14.
Laser emission element 14 is connected with pulse adjusting circuit 13, the laser that received pulse regulon 13 launches, and the welding position being emitted to weldment 20, weld.
The pulse laser welding connection device 10 that the embodiment of the present invention provides, by arranging pulse adjusting circuit 13, therefore when welding metalwork, can by regulating the pulse of laser, make metal rapid melting in the starting stage of welding, then progressively cooling makes it cool, and the metallic crystal of cooling can be made abundant, and weld strength is higher.
Please refer to Fig. 2, in a preferred embodiment, laser after adjustment has pulsewidth T1 and the pulse spacing is T2 in the first stage, in second stage, there is pulsewidth T3 and pulse spacing T2, in the phase III, there is pulsewidth T3 and pulse spacing T4, pulsewidth T3 is less than pulsewidth T1, and pulse spacing T4 is greater than pulse spacing T2.In the first stage, laser pulse width is wider, makes metal rapid melting; In second stage, laser pulse width narrows, and commissure temperature reduces; Phase III, the pulse spacing becomes large, and commissure temperature reduces further, finally stops Emission Lasers, after metalwork cools completely, complete welding.Owing to progressively being lowered the temperature by second stage and phase III, make molten metal can sufficient crystallising, therefore the intensity of weld seam be higher.
In a preferred embodiment, the time span of first stage, second stage, phase III increases progressively, and also namely the Fast Heating time is short, the temperature-fall period time is long, can make molten metal sufficient crystallising.
In a preferred embodiment, pulse adjusting circuit 13 comprises laserresonator, and pulse adjusting circuit 13 is long according to the chamber of the Signal Regulation laserresonator of control unit 11.Laserresonator is generally be made up of two laser cavity sheets kept at a certain distance away, and the chamber of laserresonator can be regulated long by regulating the distance between two laser cavity sheets.
In a preferred embodiment, this pulse laser welding connection device 10 also comprises collimation unit 15, and collimation unit 15 is connected with laser emission element 14 to make laser emission element 14 aim at welding position.
The embodiment of the present invention also provides a kind of pulse laser welding method, and it comprises the steps:
Produce seed laser, seed laser is pulse laser, has fixing pulsewidth and pulse spacing;
The pulse of seed laser is regulated;
Laser emission after regulating is welded to welding position.
The pulse laser welding method that the embodiment of the present invention provides, when welding metalwork, can by regulating the pulse of laser, make metal rapid melting in the starting stage of welding, then progressively cooling makes it cool, and the metallic crystal of cooling can be made abundant, and weld strength is higher.
In a preferred embodiment, laser after adjustment has pulsewidth T1 and the pulse spacing is T2 in the first stage, has pulsewidth T3 and pulse spacing T2, have pulsewidth T3 and pulse spacing T4 in the phase III in second stage, pulsewidth T3 is less than pulsewidth T1, and pulse spacing T4 is greater than pulse spacing T2.In the first stage, laser pulse width is wider, makes metal rapid melting; In second stage, laser pulse width narrows, and commissure temperature reduces; Phase III, the pulse spacing becomes large, and commissure temperature reduces further, finally stops Emission Lasers, after metalwork cools completely, complete welding.Owing to progressively being lowered the temperature by second stage and phase III, make molten metal can sufficient crystallising, therefore the intensity of weld seam be higher.
In a preferred embodiment, the time span of first stage, second stage, phase III increases progressively, and also namely the Fast Heating time is short, the temperature-fall period time is long, can make molten metal sufficient crystallising.
As mentioned above, the pulse laser welding connection device that the embodiment of the present invention provides and pulse laser welding method, can enable the crystallization more fully of weld molten metal, thus make the intensity of weld seam higher.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a pulse laser welding connection device, it is characterized in that, comprise control unit, seed laser unit, pulse adjusting circuit and laser emission element, described seed laser unit and described control unit, pulse adjusting circuit connects, described seed laser unit launches seed laser to described pulse adjusting circuit, described pulse adjusting circuit is connected with described control unit with the pulse of seed laser according to the Signal Regulation of described control unit, described laser emission element be connected with described pulse adjusting circuit with by the Laser emission after regulating to welding position, laser after described adjustment has pulsewidth T1 and the pulse spacing is T2 in the first stage, in second stage, there is pulsewidth T3 and pulse spacing T2, in the phase III, there is pulsewidth T3 and pulse spacing T4, described pulsewidth T3 is less than described pulsewidth T1, described pulse spacing T4 is greater than described pulse spacing T2.
2. pulse laser welding connection device according to claim 1, is characterized in that, the time span of described first stage, second stage, phase III increases progressively.
3. pulse laser welding connection device according to claim 1, is characterized in that, described pulse adjusting circuit comprises laserresonator, and the chamber of described pulse adjusting circuit laserresonator according to the Signal Regulation of described control unit is long.
4. pulse laser welding connection device according to claim 1, is characterized in that, also comprise collimation unit, and described collimation unit is connected with described laser emission element to make described laser emission element aim at welding position.
5. a pulse laser welding method, is characterized in that, comprises the steps:
Produce seed laser;
The pulse of described seed laser is regulated;
Laser emission after regulating is welded to welding position,
Laser after described adjustment has pulsewidth T1 and the pulse spacing is T2 in the first stage, in second stage, there is pulsewidth T3 and pulse spacing T2, have pulsewidth T3 and pulse spacing T4 in the phase III, described pulsewidth T3 is less than described pulsewidth T1, and described pulse spacing T4 is greater than described pulse spacing T2.
6. pulse laser welding method according to claim 5, is characterized in that, the time span of described first stage, second stage, phase III increases progressively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629142.XA CN103801831B (en) | 2013-11-29 | 2013-11-29 | Pulse laser welding connection device and pulse laser welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629142.XA CN103801831B (en) | 2013-11-29 | 2013-11-29 | Pulse laser welding connection device and pulse laser welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103801831A CN103801831A (en) | 2014-05-21 |
| CN103801831B true CN103801831B (en) | 2015-10-28 |
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| CN201310629142.XA Expired - Fee Related CN103801831B (en) | 2013-11-29 | 2013-11-29 | Pulse laser welding connection device and pulse laser welding method |
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Families Citing this family (1)
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| CN106312311B (en) * | 2016-09-23 | 2018-10-09 | 佛山市宏石激光技术有限公司 | A kind of laser welding power control apparatus and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418753A (en) * | 2002-12-17 | 2003-05-21 | 陈彦宾 | Welding method coordinately controlled by laser-electric arc compound pulsation |
| CN101043119A (en) * | 2006-03-23 | 2007-09-26 | 宫地技术株式会社 | Laser beam processing apparatus |
| CN102101209A (en) * | 2009-12-17 | 2011-06-22 | 株式会社大亨 | Pin pulse welding control device and pin pulse welding device |
| CN102892544A (en) * | 2010-05-07 | 2013-01-23 | 林肯环球股份有限公司 | Welding system and method using arc welding machines and laser beam source |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2984962B2 (en) * | 1993-01-13 | 1999-11-29 | ミヤチテクノス株式会社 | Pulse laser welding method and laser device for aluminum alloy |
| JP2003251481A (en) * | 2002-02-27 | 2003-09-09 | Sumitomo Heavy Ind Ltd | Pulsed laser welding method and equipment |
-
2013
- 2013-11-29 CN CN201310629142.XA patent/CN103801831B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418753A (en) * | 2002-12-17 | 2003-05-21 | 陈彦宾 | Welding method coordinately controlled by laser-electric arc compound pulsation |
| CN101043119A (en) * | 2006-03-23 | 2007-09-26 | 宫地技术株式会社 | Laser beam processing apparatus |
| CN102101209A (en) * | 2009-12-17 | 2011-06-22 | 株式会社大亨 | Pin pulse welding control device and pin pulse welding device |
| CN102892544A (en) * | 2010-05-07 | 2013-01-23 | 林肯环球股份有限公司 | Welding system and method using arc welding machines and laser beam source |
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| CN103801831A (en) | 2014-05-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| GR01 | Patent grant | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150925 Address after: 311800 Shaoxing Province, east of the town of Zhuji City, the town of White Lake on the new village spring water bay, No. 1209 Applicant after: Jin Hongling Address before: Jiaxing City, Zhejiang province 314050 East Gate Nanhu District Economic Park Road and junction 2, spinning room 210 Applicant before: JIAXING XINGTONG ELECTRONIC TECHNOLOGY CO., LTD. |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cao Yi Inventor before: Wu Wenyuan |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170324 Address after: 430074 Optics Valley Road, East Lake New Technology Development Zone, Hubei, China, No. 77, No. Patentee after: Wuhan unitan Intelligent Equipment Co., Ltd. Address before: 311800 Shaoxing Province, east of the town of Zhuji City, the town of White Lake on the new village spring water bay, No. 1209 Patentee before: Jin Hongling |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170420 Address after: 223800 Suqian City, Jiangsu Province Economic Development Zone Industrial Park Sucheng laser creating factory Patentee after: Jiangsu unitan Intelligent Laser Equipment Co. Ltd. Address before: 430074 Optics Valley Road, East Lake New Technology Development Zone, Hubei, China, No. 77, No. Patentee before: Wuhan unitan Intelligent Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20171129 |