CN102873457A - Back face inert gas protection device for laser welding - Google Patents
Back face inert gas protection device for laser welding Download PDFInfo
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- CN102873457A CN102873457A CN 201210391108 CN201210391108A CN102873457A CN 102873457 A CN102873457 A CN 102873457A CN 201210391108 CN201210391108 CN 201210391108 CN 201210391108 A CN201210391108 A CN 201210391108A CN 102873457 A CN102873457 A CN 102873457A
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- upper cover
- gas
- back face
- inert gas
- gas storage
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Abstract
The invention discloses a back face inert gas protection device for laser welding. The back face inert gas protection device consists of two symmetric parts, wherein each part comprises a base and an upper cover board, wherein a sunken table is arranged on the base; the upper cover board is arranged on the sunken table; a gas storage slot is formed in the bottom of the sunken table; one end of the gas storage slot is provided with an inflation port, and the other end of the gas storage slot is closed; a closed gas storage bin is formed between the gas storage slot and the upper cover board; a chamfer is arranged at an edge, which is close to a welding line, on the upper cover board; and gas outlet holes communicated with the gas storage bin are uniformly formed in the chamfer surface along the full length. The back face inert gas protection device has the advantages that protection gas is uniformly sprayed out from the gas outlet holes in the side face of the device along the full length of the welding line and is used for protecting a back face of the welding line, so that a protection effect is enhanced; the gas outlet holes are formed in the side face of the device, so that damage of laser to the gas outlet holes is avoided; and a slag discharging slot is formed in the middle of the device, so that back face welding slag produced by the laser welding can be eliminated.
Description
Technical field
The invention belongs to the materials processing technology field, relate to a kind of welding procedure method and kit, particularly relate to a kind of laser weld back of weld inert gas protection device.
Background technology
In the welding process of the non-ferrous alloys such as titanium alloy, aluminium alloy, magnesium alloy and some stainless steel material, for avoiding the reason such as oxidation stain under hot conditions, generally need the butt welded seam high-temperature region to protect.Usual way is to adopt inert gas (helium or argon gas) safeguard measure or welded specimen is placed in the vacuum chamber.But the vacuum protection high cost, workpiece size also is very limited.Therefore usually adopt the butt welded seam high-temperature region to carry out inert gas shielding, the position of protection generally comprises cooling section, heat affected area and the back of weld of weld seam molten bath, weld metal.A large amount of result of the tests show that the protection of back of weld is for guaranteeing that weldquality and forming effect are very crucial.In recent years, along with the development of high-energy-density welding heat source technology, the efficient automation single face welding and double face shaping of non-ferrous metal technology becomes one of focus of paying close attention on the welding circle.Non-ferrous alloy single face welding and double face shaping technology especially requires the protection effect of sealing run and the forming effect of back of weld.Present known laser weld back protection device, venthole generally is positioned at an end or the bottom of device.Venthole is positioned at the end, and the protection effect has certain limitation; Venthole is positioned at the bottom and then is easy to block by damage from laser or by welding slag, impact protection effect.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of back side inert gas protection device for laser weld.Concrete scheme is:
A kind of laser weld back side inert gas protection device is comprised of two parts of symmetry, and every part comprises base 1, upper cover plate 2, and described base 1 is provided with concave station, and upper cover plate 2 is arranged in the described concave station; Described concave station bottom has an end with the air reservoir 5 of inflation inlet 3, other end sealing, and air reservoir 5 forms the gas storage storehouse of sealing with upper cover plate 2; Upper cover plate 2 nearly joint edge arrange chamfering 7,7 upper ventholes 4 that evenly distribute and communicate with the gas storage storehouse along total length of chamfering;
Because the density of inert gas is lower than air, exceeds loss for guaranteeing inert gas, the present invention also comprises door 20, and described door 20 is arranged on the two ends of upper cover plate 2;
For guaranteeing that inert gas covers whole welding bead better, prevent that the distribution of gas degree is inhomogeneous, the passage 21 of described venthole is helical form, so that gas flows out with rotation mode.
Described upper cover plate 2 materials are copper
Advantage of the present invention: during welding, inert protective gas is evenly sprayed along the weld seam total length by device side venthole, and protection is implemented at the butt welded seam back side, has improved the protection effect.In addition, because venthole is positioned at the device side, thereby effectively avoid the damage of laser to venthole, prolonged anchor clamps service life.Be provided with ash pit, the eliminating of back side welding slag when being conducive to laser weld in the middle of the device.The inert gas shielding of back of weld when this device can be used for laser and the welding of laser composite heat power supply.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is axonometric drawing of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing: device of the present invention is comprised of two parts of symmetry, and every part comprises base 1, upper cover plate 2, and described base 1 is provided with concave station, and upper cover plate 2 is arranged on the described concave station; Described concave station bottom has an end with the air reservoir 5 of inflation inlet 3, other end sealing, and air reservoir 5 forms the gas storage storehouse of sealing with upper cover plate 2; Upper cover plate 2 nearly joint edge arrange chamfering 7, and 7 upper ventholes 4 that evenly distribute and communicate with the gas storage storehouse along total length of chamfering are ash pits 6 in the middle of two parts device.
Because the density of inert gas is lower than air, exceeds loss for guaranteeing inert gas, the present invention also comprises door 20, and described door 20 is arranged on the two ends of upper cover plate 2;
For guaranteeing that inert gas covers whole welding bead better, prevent that the distribution of gas degree is inhomogeneous, the passage 21 of described venthole is helical form, so that gas flows out with rotation mode.
For obtaining better technique effect, described upper cover plate 2 materials are copper.
During actual the use; utilize the supporting anchor clamps position of workpiece 8 to be welded with respect to copper cover plate 2 of having good positioning; make venthole 4 corresponding with back of weld 10; inflation inlet 3 is connected with gas cylinder; when beginning to weld; logical inertia is protected gas in advance; after inert gas is full of air reservoir 5; open laser beam 11; and make laser beam 11 treat that with respect to workpiece 8 edges welding line 9 moves, in the welding dynamic process, inertia protection gas is evenly sprayed by venthole 4; form dynamic protect gas reservoir at back of weld 10, thereby in welding process, realize the inert gas shielding to dull and stereotyped back of weld 10.When welding finishes, remove first laser beam 11, lag behind and remove inertia protection gas.The slag that forms in the welding process is discharged by ash pit 6.
Because venthole 4 is positioned at the device side, thereby has effectively avoided the damage of 11 pairs of ventholes 4 of laser, has prolonged service life.
This apparatus structure is simple, and is easy to use.Detect after welding, the protection of weld seam total length is respond well, and appearance of weld is good.
Claims (2)
1. laser weld back side inert gas protection device is comprised of two parts of symmetry, and every part comprises base, upper cover plate, and described base is provided with concave station, and upper cover plate is arranged on the described concave station; Described concave station bottom has an end with the air reservoir of inflation inlet, other end sealing, and air reservoir and upper cover plate form the gas storage storehouse of sealing; The nearly joint edge of upper cover plate arranges chamfering, the venthole that evenly distributes and communicate with the gas storage storehouse along total length on the fillet surface, and it is characterized in that: also comprise door, described door is arranged on the two ends of upper cover plate.
2. device according to claim 1, it is characterized in that: the passage of described venthole is helical form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210391108 CN102873457A (en) | 2012-10-16 | 2012-10-16 | Back face inert gas protection device for laser welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210391108 CN102873457A (en) | 2012-10-16 | 2012-10-16 | Back face inert gas protection device for laser welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102873457A true CN102873457A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210391108 Pending CN102873457A (en) | 2012-10-16 | 2012-10-16 | Back face inert gas protection device for laser welding |
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| CN (1) | CN102873457A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442933A (en) * | 2016-06-01 | 2017-12-08 | 泰科电子(上海)有限公司 | Welding system and welding method |
| CN108637550A (en) * | 2018-07-25 | 2018-10-12 | 杭州焊林科技有限公司 | A kind of welding fixture and its blowing structure |
| CN109108464A (en) * | 2018-10-30 | 2019-01-01 | 丹阳宏图激光科技有限公司 | A kind of high-speed rail aluminium alloy panel laser welding tooling and its working method |
| CN111344140A (en) * | 2017-11-14 | 2020-06-26 | 罗兰·巴克霍夫 | Device for thermally welding plastic parts and assembly comprising such a device |
| CN112025191A (en) * | 2020-08-31 | 2020-12-04 | 辽宁忠旺铝合金精深加工有限公司 | Adjustable pneumatic tool for aluminum welding type test |
-
2012
- 2012-10-16 CN CN 201210391108 patent/CN102873457A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442933A (en) * | 2016-06-01 | 2017-12-08 | 泰科电子(上海)有限公司 | Welding system and welding method |
| CN111344140A (en) * | 2017-11-14 | 2020-06-26 | 罗兰·巴克霍夫 | Device for thermally welding plastic parts and assembly comprising such a device |
| CN111344140B (en) * | 2017-11-14 | 2022-04-19 | 罗兰·巴克霍夫 | Device for thermally welding plastic parts and assembly comprising such a device |
| CN108637550A (en) * | 2018-07-25 | 2018-10-12 | 杭州焊林科技有限公司 | A kind of welding fixture and its blowing structure |
| CN109108464A (en) * | 2018-10-30 | 2019-01-01 | 丹阳宏图激光科技有限公司 | A kind of high-speed rail aluminium alloy panel laser welding tooling and its working method |
| CN112025191A (en) * | 2020-08-31 | 2020-12-04 | 辽宁忠旺铝合金精深加工有限公司 | Adjustable pneumatic tool for aluminum welding type test |
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| C06 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |