CN106425090A - Laser welding gas protective device used for aluminum alloy parts - Google Patents
Laser welding gas protective device used for aluminum alloy parts Download PDFInfo
- Publication number
- CN106425090A CN106425090A CN201610907471.XA CN201610907471A CN106425090A CN 106425090 A CN106425090 A CN 106425090A CN 201610907471 A CN201610907471 A CN 201610907471A CN 106425090 A CN106425090 A CN 106425090A
- Authority
- CN
- China
- Prior art keywords
- gas
- pipe
- protective device
- protection
- weld seam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- B23K26/12—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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
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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 invention provides a laser welding gas protective device used for aluminum alloy parts. The laser welding gas protective device comprises a front gas protective device and a back gas protective device, wherein the front gas protective device is a group of L-shaped exhaust tubes which are fixed together; high-purity argon gas is introduced into the exhaust tubes; after certain pressure and concentration are formed in a pipeline, high-purity argon gas passes through the exhaust tubes and acts on a welding seam molten pool and the front surface of a welding seam, so that protection, under a high-temperature state, of the welding seam is finally achieved; the back gas protective device comprises a tool pedestal, a gas spray tube and a gasket; and during welding, argon gas enters a sealed space above the gas spray tube through the gas spray tube, and air on the back surface of the welding seam is diffused by argon gas in a mode of continuously introducing gas, so that welded parts are protected.
Description
Technical field
The application is related to Titanium Alloy Aircraft part laser welding technology field, and particularly one kind is used for titanium alloy component laser
Welding gas protection device.
Background technology
Laser welding is carried out in an atmosphere, so the gas shield most important link that is Titanium Laser Welding.Titanium is one
Kind very active metal, because surface forms the oxide-film of densification so as to highly stable at normal temperatures, but at high temperature then
There are strong oxygen uptake, the ability inhaled nitrogen and inhale hydrogen, have a strong impact on mechanical property and the decay resistance of welding point.Will during welding
Ask and inert gas shielding is carried out to the region that weld zone and temperature are higher than 200 DEG C.In titanium alloy welding occur oxidation, pore and
The problems such as crackle, brings certain difficulty to welding again, also limit it and is more widely applied, by analyzing and consulting phase
Pass data, it is understood that titanium alloy starts to absorb hydrogen from 250 DEG C, starts to absorb oxygen from 500 DEG C, starts absorbed nitrogen from 600 DEG C,
Improve with temperature, the ability that titanium absorbs gas is higher, only the oxygen of in the air, hydrogen, nitrogen etc. and titanium is had extremely strong affinity
Gas and weld seam carry out isolation and could reduce its oxidation to weld seam, and then the generation of minimizing weld defect, and what satisfaction designed will
Ask.
How to solve protection (the weld seam front torch neck that Titanium Alloy Welds reverse side and front temperature are more than 200 DEG C of regions
Argon gas protection be mobile with molten bath, with the movement in molten bath, formed weld seam temperature can not possibly be down to immediately 200 DEG C with
Under) it is the key solving titanium alloy component laser welding, it is also the problem that we have to solve.
Content of the invention
In order to solve the above problems, this application provides one kind can be protected to weld seam during titanium alloy component laser welding
The device of shield.
One kind is used for titanium alloy component laser welding gas shield device, including front gas shield device and backside gas
Protection device, front gas shield device is one group of L-type comb being fixed together, including a molten bath coaxial gas protection pipe
The synchronous gas-shielded pipe with four root bead seams, all combs are demountable structure, and top half pipeline diameter is in charge of less than lower half
Road diameter, comb bottom is provided with gas filter, and comb side is provided with the clamping device being connected with laser head；High-purity argon gas are passed through row
Pipe, after forming certain pressure and concentration, filters through gas filter in pipeline, then by coaxial molten bath gas-shielded pipe and
Weld seam synchronization gas-shielded pipe simultaneously acts on weld seam molten bath and weld seam front, is finally reached weld seam protection at high operating temperatures；
Backside gas protection device includes tool pedestal, gas spray pipe and backing plate, and pedestal is had the notch being matched with gas spray pipe,
Gas spray pipe is embedded in notch, and tube wall is evenly equipped with multiple passages, and during welding, argon gas enters gas spray by gas spray pipe
Sealing space above pipe, Continuous aeration makes the air of back of weld be arranged by argon gas, so that soldering part is protected.
This device adopts high purity argon, is divided into 3 tunnels and carries out omnibearing protection to weld seam, be i.e. the gas to welding pool
Protection, the gas shield of weld seam front and back of weld gas shield.The protective gas in molten bath is coaxial with laser beam, thus ensure that
Blow out downwards in coaxial gas protection pipe in front protecting device, about become 12 ° of angles between laser beam.The increasing of pipeline reducing diameter
The big protection domain of weld seam.This device can also control the size of argon flow amount, the uniformity, weld seam front concentration.
The red copper backing plate of weld seam both sides has good thermal conductivity, and weld seam can be allowed to cool down as early as possible, in order to avoid forming
Weld seam oxidation by air again.
Brief description
Fig. 1 protection device schematic diagram
Fig. 2 front gas shield device
Fig. 3 backside gas protection device
Fig. 4 backside gas protection device A-A view
In figure numbers explanation：1- tool pedestal；2- briquetting；3- pressing plate；4- laser beam；5- part；The gas shield of 6- front
Device；7- backing plate；8- gas spray pipe；9- weld seam；10- coaxial gas protection pipe；11- synchronization gas-shielded pipe；12- gas is filtered
Mirror；13- clamping device
Specific embodiment
As shown in figure 1, a kind of be used for titanium alloy component laser welding gas shield device, including front gas shield device
6 and backside gas protection device, front gas shield device 6 is one group of L-type comb being fixed together, including a molten bath with
Axle gas-shielded pipe 10 and the synchronous gas-shielded pipe 11 of four root beads seam, all combs are demountable structure, and top half pipeline is straight
Footpath is less than the latter half pipeline diameter, and comb bottom is provided with gas filter 12, and comb side is provided with the clamping being connected with laser head
Device 13；High-purity argon gas are passed through comb, after forming certain pressure and concentration, filter through gas filter 12 in pipeline, then
By molten bath coaxial gas protection pipe 10 and weld seam synchronization gas-shielded pipe 11 act on weld seam molten bath and weld seam front, finally
Reach weld seam 9 protection at high operating temperatures；Backside gas protection device includes tool pedestal 1, gas spray pipe 8 and backing plate 7, work
Have, on dress pedestal 1, the notch matching with gas spray pipe 8, gas spray pipe 8 is embedded in notch, tube wall is evenly equipped with multiple logical
Pore, during welding, by the sealing space above gas spray pipe 8 entrance gas spray pipe, Continuous aeration makes back of weld to argon gas
Air is arranged by argon gas, so that soldering part is protected.Gas spray pipe 8 and backing plate 7 are red copper material.
With TC4 titanium alloy, annealed state, specification illustrates as a example the banjo fixing butt jointing for 200 × 100 × δ 2；Backing plate 7 is solid
Due to tool pedestal 1, gas spray pipe 8 is placed in groove, and soldering part passes through pressing plate 3 and briquetting 2 is fixed in tool pedestal 1, adjusts
Whole welded gaps are simultaneously fixing.Front gas shield device 6, the angle of adjusting means are fixed on laser head by the position of weld seam
And the distance away from piece surface, especially it is to ensure that patency when by coaxial gas protection pipe 10 breach for the laser beam 4.
Each road shield gas flow rate adjusts according to protective cover structure and welding parameter, to arrange in cover air and head-on
The minimum discharge of moving air is defined, and the too small protection of flow is not added with, flow cross conference formed turbulent flow to weld unfavorable.Thick with 2mm
As a example degree, gas shield flow in molten bath is 7.5L/min, and the gas flow in weld seam front is 22.5L/min, the gas of back of weld
Body flow is 10L/min.
Protect flow, cooperation laser power P=4000W, speed of welding v=3200mm/min, out of focus according to above-mentioned gas
Under the parameters such as amount -2, weld seam front and back is silvery white, meets navigation mark I level level weld seam requirement through X-ray examination.
Claims (2)
1. one kind is used for titanium alloy component laser welding gas shield device, protects including front gas shield device and backside gas
Protection unit, front gas shield device is one group of L-type comb being fixed together, including a molten bath coaxial gas protection pipe and
The synchronous gas-shielded pipe of four root bead seams, all combs are demountable structure, and top half pipeline diameter is less than the latter half pipeline
Diameter, comb bottom is provided with gas filter, and comb side is provided with the clamping device being connected with laser head；High-purity argon gas are passed through row
Pipe, after forming certain pressure and concentration, filters through gas filter in pipeline, then by molten bath coaxial gas protection pipe and
Weld seam synchronization gas-shielded pipe simultaneously acts on weld seam molten bath and weld seam front, is finally reached weld seam protection at high operating temperatures；
Backside gas protection device includes tool pedestal, gas spray pipe and backing plate, tool pedestal has and matches with gas spray pipe
Notch, gas spray pipe is embedded in notch, tube wall is evenly equipped with multiple passages, during welding, argon gas enters gas by gas spray pipe
Sealing space above body jet pipe, Continuous aeration makes the air of back of weld be arranged by argon gas, so that soldering part obtains
Protection.
2. according to claim 1 a kind of for titanium alloy component laser welding gas shield device it is characterised in that gas
Body jet pipe and backing plate are red copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907471.XA CN106425090A (en) | 2016-10-19 | 2016-10-19 | Laser welding gas protective device used for aluminum alloy parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907471.XA CN106425090A (en) | 2016-10-19 | 2016-10-19 | Laser welding gas protective device used for aluminum alloy parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106425090A true CN106425090A (en) | 2017-02-22 |
Family
ID=58176112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610907471.XA Pending CN106425090A (en) | 2016-10-19 | 2016-10-19 | Laser welding gas protective device used for aluminum alloy parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106425090A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106862766A (en) * | 2017-04-21 | 2017-06-20 | 温州大学 | A kind of galvanized sheet laser welding apparatus and its technique |
| CN107081524A (en) * | 2017-06-07 | 2017-08-22 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of Titanium Laser Welding guard method |
| CN108655567A (en) * | 2018-05-16 | 2018-10-16 | 武汉锐科光纤激光技术股份有限公司 | A kind of method of 1mm Titanium boards high speed fibre laser welding |
| CN108857068A (en) * | 2018-06-27 | 2018-11-23 | 西安飞机工业（集团）有限责任公司 | A kind of method for laser welding for aircraft air inlet leading edge thin-wall member |
| CN108857055A (en) * | 2018-06-27 | 2018-11-23 | 西安飞机工业（集团）有限责任公司 | It is a kind of for the gas atomization protective device of laser welding and guard method |
| CN110744193A (en) * | 2019-10-21 | 2020-02-04 | 大族激光科技产业集团股份有限公司 | Shielding gas device and laser welding equipment |
| CN110802314A (en) * | 2019-10-21 | 2020-02-18 | 中船澄西船舶修造有限公司 | Stainless steel plate welding back protection inflation tool |
| CN110877152A (en) * | 2018-09-05 | 2020-03-13 | 中航贵州飞机有限责任公司 | Automatic laser welding device and method |
| CN111085781A (en) * | 2020-03-10 | 2020-05-01 | 长沙理工大学 | Method for laser welding thick plate with assistance of gas column |
| CN112264705A (en) * | 2020-11-30 | 2021-01-26 | 北京精密机电控制设备研究所 | Be used for medical titanium alloy material impeller laser welding frock |
| CN112975122A (en) * | 2021-03-04 | 2021-06-18 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
| CN113275715A (en) * | 2021-05-08 | 2021-08-20 | 渤海造船厂集团有限公司 | Visual, measurable and adjustable back weld forming inflation protection device and method |
| CN113478078A (en) * | 2021-07-06 | 2021-10-08 | 西安远飞航空技术发展有限公司 | Device and method for laser welding clamping and back protection of three-layer structure |
| CN113547190A (en) * | 2021-08-10 | 2021-10-26 | 内蒙古第一机械集团股份有限公司 | Gas protection device and process method for welding TC4 titanium alloy plate |
| CN114131254A (en) * | 2021-12-22 | 2022-03-04 | 中南大学 | Fast positioning multi-airflow-beam coupling device for assisting welding process |
| CN114473341A (en) * | 2022-03-07 | 2022-05-13 | 南京理工大学 | Laser welding fixture with double-sided inert gas protection |
| CN115070210A (en) * | 2022-08-02 | 2022-09-20 | 南京航空航天大学 | Magnetic field auxiliary laser welding platform based on magnetic field form simulation design |
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| CN103273202A (en) * | 2013-05-29 | 2013-09-04 | 常熟理工学院 | Clamp structure for welding of magnesium alloy sheet |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106862766A (en) * | 2017-04-21 | 2017-06-20 | 温州大学 | A kind of galvanized sheet laser welding apparatus and its technique |
| CN107081524A (en) * | 2017-06-07 | 2017-08-22 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of Titanium Laser Welding guard method |
| CN108655567A (en) * | 2018-05-16 | 2018-10-16 | 武汉锐科光纤激光技术股份有限公司 | A kind of method of 1mm Titanium boards high speed fibre laser welding |
| CN108857068A (en) * | 2018-06-27 | 2018-11-23 | 西安飞机工业（集团）有限责任公司 | A kind of method for laser welding for aircraft air inlet leading edge thin-wall member |
| CN108857055A (en) * | 2018-06-27 | 2018-11-23 | 西安飞机工业（集团）有限责任公司 | It is a kind of for the gas atomization protective device of laser welding and guard method |
| CN110877152A (en) * | 2018-09-05 | 2020-03-13 | 中航贵州飞机有限责任公司 | Automatic laser welding device and method |
| CN110802314B (en) * | 2019-10-21 | 2021-05-25 | 中船澄西船舶修造有限公司 | Stainless steel plate welding back protection inflation tool |
| CN110744193B (en) * | 2019-10-21 | 2022-07-22 | 大族激光科技产业集团股份有限公司 | Shielding gas device and laser welding equipment |
| CN110744193A (en) * | 2019-10-21 | 2020-02-04 | 大族激光科技产业集团股份有限公司 | Shielding gas device and laser welding equipment |
| CN110802314A (en) * | 2019-10-21 | 2020-02-18 | 中船澄西船舶修造有限公司 | Stainless steel plate welding back protection inflation tool |
| CN111085781A (en) * | 2020-03-10 | 2020-05-01 | 长沙理工大学 | Method for laser welding thick plate with assistance of gas column |
| CN112264705A (en) * | 2020-11-30 | 2021-01-26 | 北京精密机电控制设备研究所 | Be used for medical titanium alloy material impeller laser welding frock |
| CN112975122A (en) * | 2021-03-04 | 2021-06-18 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
| CN113275715A (en) * | 2021-05-08 | 2021-08-20 | 渤海造船厂集团有限公司 | Visual, measurable and adjustable back weld forming inflation protection device and method |
| CN113478078A (en) * | 2021-07-06 | 2021-10-08 | 西安远飞航空技术发展有限公司 | Device and method for laser welding clamping and back protection of three-layer structure |
| CN113478078B (en) * | 2021-07-06 | 2024-04-26 | 西安远飞航空技术发展有限公司 | Device and method for clamping and back protection of three-layer structure laser welding |
| CN113547190A (en) * | 2021-08-10 | 2021-10-26 | 内蒙古第一机械集团股份有限公司 | Gas protection device and process method for welding TC4 titanium alloy plate |
| CN114131254A (en) * | 2021-12-22 | 2022-03-04 | 中南大学 | Fast positioning multi-airflow-beam coupling device for assisting welding process |
| CN114473341A (en) * | 2022-03-07 | 2022-05-13 | 南京理工大学 | Laser welding fixture with double-sided inert gas protection |
| CN115070210A (en) * | 2022-08-02 | 2022-09-20 | 南京航空航天大学 | Magnetic field auxiliary laser welding platform based on magnetic field form simulation design |
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Application publication date: 20170222 |
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