CN2659621Y - Gas protector for laser welding angle and welding joint - Google Patents
Gas protector for laser welding angle and welding joint Download PDFInfo
- Publication number
- CN2659621Y CN2659621Y CN 200320127752 CN200320127752U CN2659621Y CN 2659621 Y CN2659621 Y CN 2659621Y CN 200320127752 CN200320127752 CN 200320127752 CN 200320127752 U CN200320127752 U CN 200320127752U CN 2659621 Y CN2659621 Y CN 2659621Y
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- CN
- China
- Prior art keywords
- welding
- gas
- cover
- pulling cover
- laser
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- 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
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Abstract
The utility model relates to a gas protector for laser welding angles and welding joints. The upper part of a welding nozzle (4) is connected with a welding joint, and the middle part of the welding nozzle (4) is respectively connected with a front pulling cover (2) and a rear pulling cover (6) through a connecting plate (3). A front gas screen (1) is arranged in the front pulling cover (2), and a rear gas screen (5) is arranged in the rear pulling cover (6). An annular gas passage (7) is arranged under the front pulling cover (2), and a rear gas pulling passage (9) is arranged under the rear pulling cover (6); the rear pulling cover (6) is provided with a side gas-blowing passage (8) on one side near the welding nozzle. As the utility model uses three gas passages in the front pulling cover, gas protection is effectively carried out for the rear pulling cover and the nozzle, high-temperature regions of a welding pool, welding bead surfaces and the backside of welding beads; in addition, the shielding action of laser produced plasmas for laser energy is reduced, the heat input of weldments is improved, and the stability of the welding bead quality is ensured.
Description
Technical field: the utility model relates to a kind of titanium alloy laser welding fillet-welded joint gas shield device.
Background technology: titanium alloy CO
2In the laser beam welding; on the one hand because the chemism of titanium alloy is very high; very easily be subjected to the pollution of surrounding environment; therefore must carry out strict gas shield 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, reduces laser effective energy utilization; the stability of influence welding keyhole; and, cause the protection deleterious to each protection gas circuit generation serious disturbance, therefore must control effectively to it.Existing titanium alloy angle joint CO
2The Laser Welding gas shield is to utilize the protection of general downhand welding joint gas shield device realization to the welding high-temperature region, but needs cooperate with the long-focus plumb joint, and the protection effect is bad; Or in laser welding system, utilize fastening clips install width little, the bottom has the downhand welding of sieve aperture to drag cover, this method has certain protection to the welding high-temperature region, but is dragging the gap that has gas-protection-free between cover and the plumb joint.Because do not have the gas shield special device of angle joint welding, the protection effect of these methods of being taked is all undesirable, and does not all consider the control to the laser photo plasma.Existing processes studies show that the existence of laser photo plasma, and not only the transmission to laser energy has severe bad influence, and respectively protects gas circuit to produce serious disturbance to other.
Summary of the invention: the purpose of this utility model is that providing a kind of can control the laser photo plasma, can guarantee the special-purpose Laser Welding fillet-welded joint gas shield device of the protection effect of titanium alloy angle joint laser welding processes simultaneously.Technical solution of the present utility model is, welding tip 4 tops are connected with plumb joint, welding tip 4 middle parts by connecting plate 3 respectively with preceding drag cover 2 and after drag and cover 6 and be connected, before being installed in, drags in the cover 2 by preceding air sifter 1, after being installed in, drags by back air sifter 5 in the cover 6, before drag cover 2 below that hoop gas passage 7 is set, after drag gas passage 9 after dragging the below of cover 6 to be provided with, on one side after drag cover 6 to have side-blown gas passage 8 near welding tips.The utility model preceding drag cover, after drag the cover and the nozzle place adopted three gas passages, wherein before drag the place ahead that covers on welding pool to form gas hood, but the coaxial protection gas of expansion of laser light plumb joint is to the protection domain of welding pool, can prevent well that welding process hollow gas cut from going into welding pool; After drag cover mainly to form gas hood on the angle welding surface that has welded, its length can be protected the weld metal zone more than 200 ℃ after setting according to speed of welding effectively; The purpose of the side-blown gas passage that the nozzle place is provided with is the plasma of control laser welding processes, to improve the thermal efficiency of laser.Because the effect of three air flues; this device cooperates with the coaxial air-flow of laser welding system and the air-flow on the weld jig; in laser beam welding; not only effectively to the high-temperature region of welding pool and face of weld; and the high-temperature region of back of weld implements gas shield, and cooperates with the reasonable of coaxial protection throughput by the lateral airflow amount, also can reduce the shielding action of photo plasma to laser energy; improve the heat input of weldment, guarantee the stability of weldquality.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Welding tip 4 tops are connected with plumb joint, welding tip 4 middle parts by connecting plate 3 respectively with preceding drag cover 2 and after drag and cover 6 and be connected, before being installed in, drags in the cover 2 by preceding air sifter 1, after being installed in, drags by back air sifter 5 in the cover 6, before drag cover 2 below that hoop gas passage 7 is set, after drag gas passage 9 after dragging cover 6 below to be provided with, on one side after drag cover 6 to have side-blown gas passage 8 near welding tips.Axial gas in the plumb joint flows out downwards by welding tip 4, and the zone, molten bath is protected; Hoop gas flows out by hoop gas passage 7, forms the hoop gas hood high ambient temperatures zone, molten bath is protected, and has enlarged the gas shield scope; By the side-blown gas that side-blown gas passage 8 is introduced, drive away the laser-induced plasma of top, molten bath.After drag the gas of cover in 6 from after drag under the cover 6 after drag gas passage 9 to flow out, the high-temperature area at the positive rear portion of butt welded seam is protected.
Claims (1)
1. Laser Welding fillet-welded joint gas shield device; it is characterized in that; welding tip (4) top is connected with plumb joint; welding tip (4) middle part by connecting plate (3) respectively with preceding drag cover (2) with after drag cover (6) to be connected; before being installed in, drags in the cover (2) by preceding air sifter (1); after being installed in, drags by back air sifter (5) in the cover (6); before drag the below of cover (2) that hoop gas passage (7) is set; after drag gas passage (9) after dragging the below of cover (6) to be provided with, after drag cover (6) on one side have side-blown gas passage (8) near welding tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320127752 CN2659621Y (en) | 2003-12-16 | 2003-12-16 | Gas protector for laser welding angle and welding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320127752 CN2659621Y (en) | 2003-12-16 | 2003-12-16 | Gas protector for laser welding angle and welding joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2659621Y true CN2659621Y (en) | 2004-12-01 |
Family
ID=34349708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320127752 Expired - Lifetime CN2659621Y (en) | 2003-12-16 | 2003-12-16 | Gas protector for laser welding angle and welding joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2659621Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581491A (en) * | 2012-03-01 | 2012-07-18 | 江苏科技大学 | Laser welding method for injection molding of Al-Zn-Mg-Cu aluminum alloy |
| CN103240521A (en) * | 2013-05-24 | 2013-08-14 | 西安石油大学 | Device for providing protective gas for to-be-welded surface of high-frequency resistance weld pipe |
| CN106112230A (en) * | 2016-06-29 | 2016-11-16 | 北京动力机械研究所 | A kind of titanium alloy material weld seam front gas shield device |
| CN115055698A (en) * | 2022-06-20 | 2022-09-16 | 昆明理工大学 | Additive manufacturing device and method for removing smoke dust and splashing and preventing oxidation |
-
2003
- 2003-12-16 CN CN 200320127752 patent/CN2659621Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581491A (en) * | 2012-03-01 | 2012-07-18 | 江苏科技大学 | Laser welding method for injection molding of Al-Zn-Mg-Cu aluminum alloy |
| CN103240521A (en) * | 2013-05-24 | 2013-08-14 | 西安石油大学 | Device for providing protective gas for to-be-welded surface of high-frequency resistance weld pipe |
| CN106112230A (en) * | 2016-06-29 | 2016-11-16 | 北京动力机械研究所 | A kind of titanium alloy material weld seam front gas shield device |
| CN115055698A (en) * | 2022-06-20 | 2022-09-16 | 昆明理工大学 | Additive manufacturing device and method for removing smoke dust and splashing and preventing oxidation |
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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: 20131216 Granted publication date: 20041201 |