CN206139998U - A protection gas hood for laser welding - Google Patents
A protection gas hood for laser welding Download PDFInfo
- Publication number
- CN206139998U CN206139998U CN201621096514.2U CN201621096514U CN206139998U CN 206139998 U CN206139998 U CN 206139998U CN 201621096514 U CN201621096514 U CN 201621096514U CN 206139998 U CN206139998 U CN 206139998U
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- China
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- gas
- protection
- cover
- laser welding
- gas nozzle
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Abstract
The utility model provides a protection gas hood for laser welding, includes the gas nozzle and drags the cover with the certain contained angle of gas nozzle one -tenth is connected, the downside that drags the cover has the opening, just it is provided with the protection trachea in the cover to drag, protect the tracheal lateral wall of going up to be provided with a plurality of venthole. The utility model discloses owing to has adopted and seted up the upwards structure of jet -propelled venthole of a plurality of on dragging the protection trachea in covering, after the air guide, gas forms through the recoil in dragging the cover and protects gas by a large scale, thereby be favorable to forming the protection of welding seam, and through the gas nozzle spun protection gas with dragging the cover cooperation to use to the molten bath top, front end and surface are protected, thereby the all -round protection to the laser welding process has been realized effectively, make the welding seam can not expose by the oxidation in the air, the qualities of the welding seam are greatly improved. The utility model has the advantages of simple structure, easy, with low costs, excellent in use effect is made, multiple metal material's laser welding gas shiled can be satisfied.
Description
Technical field
The utility model is related to a kind of welding protection device, is specifically related to a kind of protection gas hood for laser welding.
Background technology
Laser welding has the advantages that speed of welding is fast, it is little to deform little, heat affected area, is widely used in the industrial production,
Efficient welding can be carried out to materials such as carbon steel, stainless steel, titanium alloy, aluminium alloys.In laser beam welding, high power density
Light beam acts on surface of the work so that material local melting is easily aoxidized into liquid, and under high energy density beam effect
Metallic vapour is formed, plasma is easily formed above molten bath, can be absorbed or scattering laser, so as to get swashing up to surface of the work
Light energy significantly weakens, and affects the stability of welding process.And, in laser beam welding, the weld seam temperature of formation according to
So higher, if be not protected by, easily exposure is oxidized in atmosphere weld seam.Therefore, in laser beam welding, need to adopt
Take measure to protect molten bath and weld seam.
The content of the invention
The purpose of this utility model is for above-mentioned existing problems and deficiency, there is provided a kind of simple structure, it is easy to manufacture,
The good protection gas hood that effectively laser beam welding can be protected of low cost, using effect.
What the technical solution of the utility model was realized in：
Protection gas hood for laser welding described in the utility model, is characterized in：Including gas nozzle and and gas
Nozzle forms an angle the cover that drags of connection, described to drag the downside of cover to have opening, and described dragging be provided with cover protection tracheae, institute
The upper side wall for stating protection tracheae is provided with several ventholes.
In order that the gas for importing uniformly and stably blows out, it is beneficial to above molten bath and surface forms protection air-flow, institute
State and be provided with gas nozzle current stabilization piece.
In order to realize preferably protection to welding process, the outlet side of the gas nozzle is provided with for laser beam transparent
Semicircular indentations.
In order that gas nozzle and being dragged preferably be used in conjunction with each other between cover, the gas nozzle and the folder between cover is dragged
Angle θ is 30 °～60 °.
In order to form more preferable protection air-flow, each venthole is circular venthole, each circular venthole it is straight
Footpath is 1mm.And, the centre-to-centre spacing of adjacent two ventholes is 5mm.
In order to reduce protecting the difficulty of processing of gas hood, and the air-flow between two components not to interfere, the gas
Nozzle with drag cover be process respectively after again weld or rivet by way of link together.
For the ease of being respectively provided with gas flow, the gas nozzle and cover is dragged respectively to be connected with a gas supply device.
The utility model is as a result of the venthole that several jets upwards are offered on the protection tracheae dragged in cover
Structure, after air guide, gas is dragging Jing in cover to recoil to form large area shielding gas, so as to be conducive to forming the guarantor of weld seam
Shield, and with the formation of weld seam, drags and covers on face of weld movement, can the weld seam higher to temperature protect, while logical
Cross the shielding gas sprayed with the gas nozzle for dragging cover to use cooperatively to protect molten bath top, front end and surface, so as to effective
Realize the omnibearing protection to laser beam welding, make weld seam be not exposed in air be oxidized, substantially increase weldering
Seam quality.And, current stabilization piece is provided with gas nozzle, by current stabilization piece the gas of importing can be made uniformly and stably to blow
Go out, be beneficial to above molten bath and surface forms protection air-flow, and the shielding gas by blowing out and the plasma above molten bath
Body phase interaction, reduces plasma, reduces scattering and absorption of the welding process plasma to laser.This practicality is new
The simple structure of type, easy to manufacture, low cost, using effect are good, disclosure satisfy that the laser welding gas shielded of various metals material.
The utility model is further described below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
As shown in figure 1, the protection gas hood for laser welding described in the utility model, including gas nozzle 2 and with gas
What body nozzle 2 formed an angle connection drags cover 6, the gas nozzle 2 and drags the angle theta between cover 6 to be 30 °～60 °, described to drag
The downside of cover 6 has opening 61, and drags one end that cover 6 is connected with gas nozzle 2 to realize envelope by the side wall of gas nozzle 2
Close, while protection tracheae 7 is provided with cover 6 in described dragging, the upper side wall of the protection tracheae 7 is provided with several ventholes 8,
And protect tracheae 7 to arrange near one end closing of gas nozzle 2, both can be directly to arrange baffle plate at the end to realize closing,
Can be that the side wall for passing through gas nozzle 2 by being connected with gas nozzle 2 realizes closing.As illustrated, dragging cover 6 to be that level sets
Put, protection tracheae 7 is also to be horizontally set on to drag in cover 6, therefore protect the venthole 8 that the upper side wall of tracheae 7 is opened up to be to import
Gas be ejected to drag in cover 6 upwards, and the gas for spraying is flowed downward out in the case where the recoil for dragging the upper side wall of cover 6 is acted on, so as to
Large-area protection gas curtain is formed at the opening 61 for dragging cover 6.Wherein, current stabilization piece 3 is provided with the gas nozzle 2, is passed through
Current stabilization piece 3 can be such that the gas of importing uniformly and stably blows out, and be beneficial to above molten bath and surface forms protection air-flow, and
By the Plasma Interaction above the shielding gas and the molten bath that blow out, reduce plasma, reduce welding process it is medium from
Scattering and absorption of the daughter to laser.And, the outlet side of the gas nozzle 2 is provided with the semicircle for laser beam transparent
V notch v 4, in welding process, focuses on laser beam transparent semicircular indentations 4 and reaches surface of the work, while the blowout of gas nozzle 2
Gas is in the angle of any with plane, enables to shielding gas and is also carried out protection to molten bath front.And, each venthole 8
For circular venthole, a diameter of 1mm of each circular venthole, and the centre-to-centre spacing of adjacent two ventholes 8 are 5mm.This
Outward, each venthole 8 can also arrange the venthole of squarely venthole or oval venthole or other geometries.And,
The gas nozzle 2 with drag cover 6 be process respectively after again weld or rivet by way of link together, so can drop
Air-flow between the difficulty of processing of minimum living tyre protecting shield, and two components will not be interfered, and improve gas shield effect.In order to
It is easy to be respectively provided with gas flow, the gas nozzle 2 and drags cover 6 to be respectively connected with a gas supply device.As illustrated,
The inlet end of gas nozzle 2 is connected with nozzle waveguide pipe 1, and nozzle waveguide pipe 1 is connected with gas supply device.Meanwhile, dragging cover 6
On be connected with and drag cover wireway 5, the one end for dragging cover wireway 5 connects with gas supply device, and its other end connects with protection tracheae 7
It is logical.During welding, by nozzle waveguide pipe 1 and dragging cover wireway 5 to be directed respectively into gas, gas can be with identical type, it is also possible to no
Same species；For example：Can simultaneously use argon gas, or nozzle waveguide pipe 1 to import helium, drag cover wireway 5 to import argon gas.
Embodiment one：
Using 304 stainless steel test materials, nozzle waveguide pipe 1, cover wireway 5 is dragged to be connected with argon bottle respectively, argon gas is pure
Degree 99.99%, flow set is respectively 15L/min, 20L/min.In welding process, laser power 10KW, speed of welding 3m/
Min, defocusing amount -3mm.Protected by protection gas hood butt welding termination process described in the utility model, aoxidize surface of the work
Phenomenon is seldom, basically identical with mother metal color, therefore has good protected effect by the utility model butt welding sewer.
The utility model is described by embodiment, but the utility model is not construed as limiting, with reference to this practicality
New description, other changes of the disclosed embodiments are such such as the professional person of this area is readily apparent that
Change should belong within the scope of the restriction of the utility model claim.
Claims (8)
1. a kind of protection gas hood for laser welding, it is characterised in that：Including gas nozzle（2）And and gas nozzle（2）Into
What certain angle connected drags cover（6）, it is described to drag cover（6）Downside there is opening（61）, and described drag cover（6）Inside it is provided with protection
Tracheae（7）, the protection tracheae（7）Upper side wall be provided with several ventholes（8）.
2. the protection gas hood for laser welding according to claim 1, it is characterised in that：The gas nozzle（2）It is interior
It is provided with current stabilization piece（3）.
3. the protection gas hood for laser welding according to claim 1, it is characterised in that：The gas nozzle（2）'s
Outlet side is provided with the semicircular indentations for laser beam transparent（4）.
4. the protection gas hood for laser welding according to claim 1, it is characterised in that：The gas nozzle（2）With
Drag cover（6）Between angle theta be 30 °～60 °.
5. the protection gas hood for laser welding according to claim 1, it is characterised in that：Each venthole（8）For
Circular venthole, a diameter of 1mm of each circular venthole.
6. the protection gas hood for laser welding according to claim 1, it is characterised in that：Adjacent two ventholes
（8）Centre-to-centre spacing be 5mm.
7. the protection gas hood for laser welding according to claim 1, it is characterised in that：The gas nozzle（2）With
Drag cover（6）Linked together by way of welding or riveting.
8. the protection gas hood for laser welding according to claim 1, it is characterised in that：The gas nozzle（2）With
Drag cover（6）Respectively it is connected with a gas supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621096514.2U CN206139998U (en) | 2016-09-30 | 2016-09-30 | A protection gas hood for laser welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621096514.2U CN206139998U (en) | 2016-09-30 | 2016-09-30 | A protection gas hood for laser welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206139998U true CN206139998U (en) | 2017-05-03 |
Family
ID=58621801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621096514.2U Active CN206139998U (en) | 2016-09-30 | 2016-09-30 | A protection gas hood for laser welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206139998U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111203640A (en) * | 2020-01-19 | 2020-05-29 | 南京航空航天大学 | Double-laser-beam bilateral synchronous welding device |
-
2016
- 2016-09-30 CN CN201621096514.2U patent/CN206139998U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111203640A (en) * | 2020-01-19 | 2020-05-29 | 南京航空航天大学 | Double-laser-beam bilateral synchronous welding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Patentee after: China Uzbekistan Welding Research Institute Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangdong Welding Institute (China-Ukraine E.O. Paton Institute of Welding) |