CN2683306Y - Gas protection device for YAG laser welding flat welding joint - Google Patents
Gas protection device for YAG laser welding flat welding joint Download PDFInfo
- Publication number
- CN2683306Y CN2683306Y CN 200420004368 CN200420004368U CN2683306Y CN 2683306 Y CN2683306 Y CN 2683306Y CN 200420004368 CN200420004368 CN 200420004368 CN 200420004368 U CN200420004368 U CN 200420004368U CN 2683306 Y CN2683306 Y CN 2683306Y
- Authority
- CN
- China
- Prior art keywords
- mouth
- welding
- yag laser
- laser
- inner ring
- 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.)
- Expired - Lifetime
Links
- 238000003466 welding Methods 0.000 title claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract description 4
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 229910001148 Al-Li alloy Inorganic materials 0.000 abstract description 5
- 239000001989 lithium alloy Substances 0.000 abstract description 5
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 23
- FCVHBUFELUXTLR-UHFFFAOYSA-N [Li].[AlH3] Chemical compound [Li].[AlH3] FCVHBUFELUXTLR-UHFFFAOYSA-N 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- Laser Beam Processing (AREA)
Abstract
The utility model relates to a gas protection device for YAG laser welding flat welded joint, it is installed in the below of processing head, its structural design characterized in that, at the lower extreme installation conical nozzle outer loop of processing head, the top of conical nozzle outer loop is an opening, install a toper equally in the inboard of conical nozzle outer loop, hollow nozzle inner ring and its laminating, the top of nozzle inner ring be an annular spout and with the opening parallel and level, a cavity intercommunication on the upper portion of nozzle inner ring passes the breather pipe of nozzle outer loop, the diameter L of the inner ring spout of nozzle is 4 ~ 10 mm. The utility model discloses the advantage of device is, can realize carrying out effectual all-round protection to welding high temperature area through cooperation welding jig and laser welder head, improves the stability of the effective utilization ratio of laser energy and welding process. Is especially suitable for YAG laser flat welding of high-strength aluminum alloy, aluminum lithium alloy and titanium alloy.
Description
The utility model is a kind of gas shield device of the YAG of being used for Laser Welding downhand welding joint, and it relates to the raising on structural improvement of existing apparatus and the performance.
At high strength alumin ium alloy, aluminium lithium alloy and titanium alloy Nd
3+: in the YAG laser beam welding, the welding of stable aperture be obtained, aperture must be induced, the in addition suitable control of article on plasma body simultaneously, this concerns very big with the protective gas flow regime.Flowing of protective gas should maintain laminar condition.The evaporation of Mg is a subject matter in the aluminium alloy laser weld.In order to induce and keep aperture, reduce the loss of Mg, mainly to consider geometry, the nozzle diameter of protective device, the pressure and the flow rate of gas.This stability to welding process has a significant impact.On the one hand because the chemism height of non-ferrous metal; very easily be subjected to the pollution of surrounding environment; therefore must carry out strict protection to the welding high-temperature region; the existence of laser-induced plasma not only has severe bad influence to the transmission of laser energy on the other hand; reduce laser effective energy utilization, the stability of influence welding keyhole, and to each protection gas circuit generation serious disturbance; cause the protection deleterious, therefore must control effectively it.
Say that to a certain extent welding titanium alloy is to higher than welding aluminum alloy of the requirement of gas shield, because titanium or titanium alloy has stronger GAS ABSORPTION ability, pure titanium begins to inhale hydrogen about 250 ℃, and 600 ℃ begin to inhale nitrogen.Because the temperature of joint area is higher than 600 ℃ far away during Titanium Laser Welding, so do not having under the situation of safeguard measure, airborne noxious pollutant is just very easily invaded the weld zone, thereby causes the joint embrittlement, produces pore, and reduces toughness of material significantly.Therefore, the laser weld of titanium alloy adopts the inert gas shielding method usually.During the titanium alloy plate laser weld, should carry out gas shield to welding region from three aspects, i.e. LASER HEATING place, high-temperature region, weld seam rear portion and back of weld.In the robot laser welding system; usually adopt the method in side-blown inert gas shielding molten bath; the scope of side-blown gas shiled is less; because existing gas shield device does not have the axial or hoop protective gas device on the vertical direction; width along the vertical weld direction is not enough; and after the laser scanning, the not yet cooling part in molten bath can not get protection, and is oxidized easily.
The purpose of this utility model is just at the deficiency of existing apparatus, researched and developed to have hoop gas shiled molten bath: Nd:YAG laser laser downhand welding gas shield device.This device cooperates weld jig and laser welding system can realize effective comprehensive protection is carried out in the welding high-temperature region, improves the effective rate of utilization of laser energy and the stability of welding process.Be specially adapted to the YAG laser downhand welding welding of high strength alumin ium alloy, aluminium lithium alloy and titanium alloy.
The purpose of this utility model realizes by following measure:
This kind YAG Laser Welding downhand welding joint gas shield device; it is installed in the below of processing head; its structural design features is; the mouth mouth outer shroud of one taper is installed in the lower end of processing head; the top of tapered mouth mouth outer shroud is an opening; ring and its applying in the mouth mouth of same installation one taper of the inboard of tapered mouth mouth outer shroud, hollow; the spout that the interior top of encircling of mouth mouth is a ring-type is also concordant with opening; the breather pipe of mouth mouth outer shroud is passed in the cavity on the top of ring connection one in the mouth mouth, and the diameter L of the spout of ring is 4～10mm in the mouth mouth.In addition, in order to protect laser instrument, processing head top be provided with a gas curtain, be provided with a cover plate on the top of gas curtain.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the structural representation of the utility model device
Below with reference to drawings and Examples the utility model device is further described:
Shown in accompanying drawing 1; this kind YAG Laser Welding downhand welding joint gas shield device; it is installed in the below of processing head 1; its structural design features is; the mouth mouth outer shroud 2 of one taper is installed in the lower end of processing head 1; the top of tapered mouth mouth outer shroud 2 is an opening 7; inboard same installation one taper at tapered mouth mouth outer shroud 2; ring 3 and its applying in the mouth mouth of hollow; the top of ring 3 is the spout 8 of a ring-type and concordant with opening 7 in the mouth mouth; the breather pipe 4 of mouth mouth outer shroud 2 is passed in the cavity on the top of ring 3 connection one in the mouth mouth, and the diameter L of the spout 8 of ring 3 is 4 in the mouth mouth; 6 or 8mm.In addition, in order to protect laser instrument, processing head 1 top be provided with a gas curtain 5, be provided with a cover plate 6 on the top of gas curtain 5.Because link to each other with laser condensing lens on this gas shield device, focus lamp costs an arm and a leg, and in order to protect this element, thereunder is provided with a cover plate 6, is cheap consumable accessory.After cover plate damages, just change a new glass.When materials such as laser weld aluminium alloy, be easy to generate and splash and pollute cover plate, in order to alleviate the pollution of splashing to glass, below cover plate 6, designed a compressed air gas curtain 5, in welding process, blow the compressed air about 8 atmospheric pressure, the cover plate that blows off that will splash, thus reach the purpose that alleviates the pollution of glass.
Use this kind YAG Laser Welding downhand welding joint gas shield device, at high strength alumin ium alloy, aluminium lithium alloy and titanium alloy Nd
3+: in the YAG laser downhand welding process,, realized the protection of welding high-temperature region and the control of laser-induced plasma by the safeguard measure of the axial ring-type gas of this kind.Improved welding quality widely.
The advantage of the utility model device is, can be real by cooperating weld jig and laser welding system Now effective disposition is carried out in the welding high-temperature region, improve laser energy effective rate of utilization and The stability of welding process. Be specially adapted to the YAG of high strength alumin ium alloy, aluminium lithium alloy and titanium alloy Laser downhand welding welding.
Claims (3)
1. YAG Laser Welding downhand welding joint gas shield device; this device is installed in the below of processing head (1); it is characterized in that: the mouth mouth outer shroud (2) that a taper is installed in the lower end of processing head (1); the top of tapered mouth mouth outer shroud (2) is an opening (7); inboard same installation one taper at tapered mouth mouth outer shroud (2); ring (3) and its applying in the mouth mouth of hollow; the spout (8) that the interior top of encircling (3) of mouth mouth is a ring-type is also concordant with opening (7); the breather pipe (4) of mouth mouth outer shroud (2) is passed in the cavity on the top of ring (3) connection one in the mouth mouth, and the diameter L of the spout (8) of ring (3) is 4～10mm in the mouth mouth.
2. YAG Laser Welding downhand welding joint gas shield device according to claim 1 is characterized in that: processing head (1) top be provided with a gas curtain (5), be provided with a cover plate (6) on the top of gas curtain (5)
3. YAG Laser Welding downhand welding joint gas shield device according to claim 1 is characterized in that: the diameter L of the spout (8) of ring (3) is 4,6 or 8mm in the mouth mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420004368 CN2683306Y (en) | 2004-02-25 | 2004-02-25 | Gas protection device for YAG laser welding flat welding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420004368 CN2683306Y (en) | 2004-02-25 | 2004-02-25 | Gas protection device for YAG laser welding flat welding joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2683306Y true CN2683306Y (en) | 2005-03-09 |
Family
ID=34605667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420004368 Expired - Lifetime CN2683306Y (en) | 2004-02-25 | 2004-02-25 | Gas protection device for YAG laser welding flat welding joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2683306Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463977C (en) * | 2006-07-31 | 2009-02-25 | 中国航天科技集团公司第五研究院第五一○研究所 | Method and device for lasing area modified gas protection in atmospheric environment |
| CN101712103A (en) * | 2008-09-30 | 2010-05-26 | 三洋电机株式会社 | Jig for laser welding, laser welding apparatus and method of manufacturing rectangular cell |
| CN102369080A (en) * | 2009-03-31 | 2012-03-07 | 丰田自动车株式会社 | Laser beam machining device |
| CN102528283A (en) * | 2010-12-30 | 2012-07-04 | 杭州中科新松光电有限公司 | Welding head of optical fiber transmission laser |
| CN102728951A (en) * | 2011-04-13 | 2012-10-17 | 普雷茨特两合公司 | Cartridge for holding an optical element in a laser machining head |
| CN102820614A (en) * | 2012-08-21 | 2012-12-12 | 山东能源机械集团大族再制造有限公司 | Semiconductor laser device |
-
2004
- 2004-02-25 CN CN 200420004368 patent/CN2683306Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463977C (en) * | 2006-07-31 | 2009-02-25 | 中国航天科技集团公司第五研究院第五一○研究所 | Method and device for lasing area modified gas protection in atmospheric environment |
| CN101712103A (en) * | 2008-09-30 | 2010-05-26 | 三洋电机株式会社 | Jig for laser welding, laser welding apparatus and method of manufacturing rectangular cell |
| CN102369080A (en) * | 2009-03-31 | 2012-03-07 | 丰田自动车株式会社 | Laser beam machining device |
| CN102528283A (en) * | 2010-12-30 | 2012-07-04 | 杭州中科新松光电有限公司 | Welding head of optical fiber transmission laser |
| CN102728951A (en) * | 2011-04-13 | 2012-10-17 | 普雷茨特两合公司 | Cartridge for holding an optical element in a laser machining head |
| CN102728951B (en) * | 2011-04-13 | 2017-03-01 | 普雷茨特两合公司 | Box for the optical element in fixed laser processing head |
| CN102820614A (en) * | 2012-08-21 | 2012-12-12 | 山东能源机械集团大族再制造有限公司 | Semiconductor laser device |
| CN102820614B (en) * | 2012-08-21 | 2015-08-05 | 山东能源重装集团大族再制造有限公司 | A kind of semiconductor laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140225 Granted publication date: 20050309 |