CN110280902A - A kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint - Google Patents
A kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint Download PDFInfo
- Publication number
- CN110280902A CN110280902A CN201910574026.XA CN201910574026A CN110280902A CN 110280902 A CN110280902 A CN 110280902A CN 201910574026 A CN201910574026 A CN 201910574026A CN 110280902 A CN110280902 A CN 110280902A
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- Prior art keywords
- laser
- aluminium alloy
- welding process
- line aluminium
- cylinder longitudinal
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention discloses a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joints.The appearance of welding arc crater, crackle is avoided using robot, solder, laser etc., improves weldquality.This technique is included on the basis of lock bottom welding structure, and preseting solder, wide-angle laser welding, bilateral receive light etc..6 line aluminium alloy plate thickness 3mm, fusion length 30mm, butt-joint clearance 0.4mm-0.7mm, 4047 solder thickness 0.4-0.7mm, defocusing amount -5mm~-3mm, speed of welding 0.04m/s, Ar gas flow 10-20L/min, laser power 2.5KW-3KW, 45 ° of laser inclination angle, laser form weld seam from molten.In conjunction with the laser power rise time accurately calculated and fall time, appearance of weld uniformity is improved, crater crack is avoided, forms good weld seam.
Description
Technical field
The present invention relates to laser welding process fields, specially 6 line aluminium alloy cylinders inside longitudinal joint laser welding process.
Background technique
Aluminum alloy piping welding is frequently with welding procedures such as TIG, MIG, since aluminum alloy surface has fine and close high-melting-point aluminium oxide
Film, therefore the crusher surface aluminum oxide film by the way of cathode cleaning is needed in welding process, this mode would generally generate
Larger welding deformation, heat-affected zone softened etc..Therefore the Laser Welding of energy concentration was generallyd use in recent years to carry out aluminum alloy welding
It connects.Laser welding is a kind of high power density, and the welding method that energy is concentrated, power density is up to 106W/cm2, laser action
Vaporization can be brought it about in aluminum alloy surface, it is small that the reaction force of the eruption of plasma gas can be such that lower section liquid metal is formed
Hole, therefore narrow and deep weld seam can be formed, this process is deep penetration welding process.Laser Welding, which has, does not have to bevel, is once welded into
Type, heat affected area is narrow, deforms the advantages that small.But in the laser beam welding of aluminium alloy, aluminium is lower to the absorptivity of laser,
Therefore lesser power density is unable to satisfy welding requirements, therefore generallys use powerful laser or pulse laser progress
Welding.And 6xxx aluminium alloy, from fusion welding process, in weld seam crystallisation by cooling, low melting point eutectic substance can be assembled,
Consolidating the stage in liquid will form liquid film, and the shrinkage stress generated in solidification can bring it about cracking phenomena, forms solidification and splits
Line.Therefore shift to an earlier date preset 4047 solder inside weld seam, so that crack-sensitivity section is avoided, to form good weld seam.
Cylinder lesser for diameter, laser head cannot be introduced into inner barrel and be welded, and laser beam welding is not required to
Medium is wanted, laser head is not contacted with workpiece, therefore is welded using wide-angle laser, the limitation of narrow space can be overcome, thus into
Row remote welding.
Innovation and creation content
The purpose of the invention is to propose a kind of 6 line aluminium alloy cylinder longitudinal joint laser welding process, has appearance of weld
Uniformly, beautiful, the shortcoming such as no arc crater, crackle deforms the advantages that small.
For this purpose, the technical solution adopted by the present invention is that:
A kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint, it is excellent using the included welding structure permanently padded in lock bottom
After change be specially type I groove, groove depth 2mm, liner thickness 1mm, base material be thickness 3mm 6 line aluminium alloy cylinders, group pair between
Gap 0.5mm, solder are 4047 aluminium alloy brazing filler metals of 0.5mm thickness.Optical fiber laser, continuous laser.Power 2.5KW, speed of welding
0.04m/s, defocusing amount -5mm, Ar flow 20L/min, 45 ° of laser inclination angle, twice welding fabrication.
The beneficial effect of the invention is:
The invention has the advantages that
A kind of 6 line aluminium alloy cylinder longitudinal joint laser welding process, energy are concentrated, and power density is high, and heat input is low, heat affecting
Area is small, deforms small, speed of welding height.Weld width 2.5-3mm, weld penetration 2.2-2.5mm, flawless, undercut etc. are discontinuous,
Welding process is stablized.
Detailed description of the invention
Fig. 1 is to invent welded schematic diagram.
Fig. 2 is invention welding schematic diagram for the first time.
Fig. 3 is second of welding schematic diagram of invention.
Fig. 4 is the bonding power curve of invention.
Specific embodiment
The invention is further described in conjunction with attached drawing 1-4.
Welding process the following steps are included:
1) prefabricated type I groove, butt-joint clearance 0.5mm, groove depth 2mm, mother metal thickness 3mm are shown in attached drawing 1.
2) preset 4047 aluminium alloy brazing filler metal, solder thickness 0.5mm.
3) laser, KUKA robot, water cooling unit, PLC control system are opened.
4) laser head moves to welding position, accurate teaching.45 ° of laser inclination angle, welding distance are defocusing amount -5mm.Distance weldering
It stitches and receives light at the position tail portion 13mm, welded respectively from both direction twice, see attached drawing 2.
5) welding parameter is arranged: speed of welding 0.4m/s, laser power 2.5KW, specific power curve are shown in attached drawing 3.
6) argon gas, flow 20L/min are opened.
7) compressed air, outlet pressure 5bar are opened.
8) operation program is welded.
Postwelding carries out VT inspection, PT Liquid penetrant testing to weld seam.
Claims (7)
1. a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joints, it is characterised in that: barrel diameter is less than φ 300mm, uses
Solder welding structure built in bottom is locked, butt-joint clearance is less than 0.5mm, and 4047 solders are higher than drum surface 0.5mm.
2. a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint according to claim 1, it is characterised in that:
Fusion length 30mm matches accurate laser power profile and goes out, receives optical position, guarantees weld size.
3. a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint according to claim 1, it is characterised in that:
It is welded twice from two sides respectively, receives light, Crack prevention inwardly.
4. a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint according to claim 1, it is characterised in that:
Selection laser power is 2.5KW, speed of welding 0.04m/s, defocusing amount -5mm, protective gas Ar, gas flow 20L/
min。
5. a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint according to claim 1, it is characterised in that:
45 ° of laser tilt angle, can small-sized cavity inner wall longitudinal joint within weld diameter 300mm, avoid laser head and workpiece
Interference.
6. a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint according to claim 1, it is characterised in that:
Optical fiber laser is selected, laser head focal length 310mm carries out remote laser weldering.
7. a kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint according to claim 1, it is characterised in that:
This technique is suitable for 6 line aluminium alloy butt welds, avoids the liquation crack occurred in welding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910574026.XA CN110280902A (en) | 2019-06-28 | 2019-06-28 | A kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910574026.XA CN110280902A (en) | 2019-06-28 | 2019-06-28 | A kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110280902A true CN110280902A (en) | 2019-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910574026.XA Pending CN110280902A (en) | 2019-06-28 | 2019-06-28 | A kind of laser welding process of 6 line aluminium alloy cylinder longitudinal joint |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719587A (en) * | 2020-12-18 | 2021-04-30 | 北京航星机器制造有限公司 | Laser pulse welding method for thin-wall aluminum alloy butt joint |
Citations (5)
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| US20130092667A1 (en) * | 2009-01-13 | 2013-04-18 | Lincoln Global, Inc. | Method and System to Start and Use Combination Filler Wire Feed and High Intensity Energy Source for Welding |
| CN104668690A (en) * | 2015-02-09 | 2015-06-03 | 北京科技大学 | Device and method for assisting fluxless brazing by ultrasonic vibrating welding wire |
| CN106363510A (en) * | 2016-11-22 | 2017-02-01 | 郑州搜趣信息技术有限公司 | Oil drill rod circumferential surface rust removing device |
| CN106984879A (en) * | 2017-02-13 | 2017-07-28 | 浙江银轮机械股份有限公司 | A kind of Controlled Atmosphere Protect solder without soldering acid method of Al-alloy heat exchanger |
| CN206667993U (en) * | 2017-05-02 | 2017-11-24 | 中车唐山机车车辆有限公司 | A kind of doorframe lock box |
-
2019
- 2019-06-28 CN CN201910574026.XA patent/CN110280902A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130092667A1 (en) * | 2009-01-13 | 2013-04-18 | Lincoln Global, Inc. | Method and System to Start and Use Combination Filler Wire Feed and High Intensity Energy Source for Welding |
| CN104668690A (en) * | 2015-02-09 | 2015-06-03 | 北京科技大学 | Device and method for assisting fluxless brazing by ultrasonic vibrating welding wire |
| CN106363510A (en) * | 2016-11-22 | 2017-02-01 | 郑州搜趣信息技术有限公司 | Oil drill rod circumferential surface rust removing device |
| CN106984879A (en) * | 2017-02-13 | 2017-07-28 | 浙江银轮机械股份有限公司 | A kind of Controlled Atmosphere Protect solder without soldering acid method of Al-alloy heat exchanger |
| CN206667993U (en) * | 2017-05-02 | 2017-11-24 | 中车唐山机车车辆有限公司 | A kind of doorframe lock box |
Non-Patent Citations (2)
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| 李雄斌: "6061-T6 铝合金薄板激光填丝钎焊工艺研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112719587A (en) * | 2020-12-18 | 2021-04-30 | 北京航星机器制造有限公司 | Laser pulse welding method for thin-wall aluminum alloy butt joint |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.18a-1, Feiyun Road, Hunnan District, Shenyang City, Liaoning Province Applicant after: Shenyang fuchuang precision equipment Co.,Ltd. Address before: No.18a-1, Feiyun Road, Dongling District, Shenyang, Liaoning Province, 110000 Applicant before: Shenyang Fortune Precision Equipment Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190927 |