CN111545903A - Laser welding protective gas device for titanium alloy annular welding seam - Google Patents
Laser welding protective gas device for titanium alloy annular welding seam Download PDFInfo
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- CN111545903A CN111545903A CN202010404863.0A CN202010404863A CN111545903A CN 111545903 A CN111545903 A CN 111545903A CN 202010404863 A CN202010404863 A CN 202010404863A CN 111545903 A CN111545903 A CN 111545903A
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- Prior art keywords
- protective gas
- gas device
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- titanium alloy
- shielding
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- 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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a laser welding protective gas device for a titanium alloy annular welding seam, which adopts a protective gas device with a sectional structure aiming at the laser welding of the titanium alloy annular welding seam, wherein the front protective gas device is mainly responsible for gas protection of a molten pool and partial postweld areas, and the middle and rear protective gas devices are mainly responsible for gas protection of the rest postweld areas. And rotatable connecting rods are adopted among all the sections of the shielding gas devices, so that the shielding gas devices are attached to welding seams to realize laser welding of titanium alloy annular welding seams.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a laser welding protective gas device for a titanium alloy annular welding seam.
Background
The protection condition of gas to a high-temperature welding seam area in the titanium alloy laser welding process directly influences the performance of the welded material, and becomes a key for determining the quality of the protection effect. When the titanium alloy material is welded by adopting laser deep fusion welding, plasma and metal steam can be formed due to the keyhole effect, so that the welding process is unstable, and the formed welding line is not uniform. Meanwhile, because the laser welding speed is high, the gas protection of the area which is not cooled after butt welding is very critical. Most of shielding gas devices used at present are copper exhaust pipes, but when titanium alloy laser welding is carried out, the protection effect of the copper exhaust pipes is not ideal enough, and the protection effect of the copper exhaust pipes is worse for space curve welding seams.
Disclosure of Invention
In view of the above, it is necessary to provide a laser welding shielding gas device for a titanium alloy girth weld.
The laser welding protective gas device for the circumferential weld comprises a front section protective gas device, a middle section protective gas device, a rear section protective gas device, a splitter plate, a connecting rod and a fixing rod.
The front section, the middle section and the rear section of the shielding gas device are connected with the screw through the connecting rod, and the connecting rod rotates around the screw relatively to realize the relative rotation of the front section, the middle section and the rear section of the shielding gas device so as to realize the conveying of the shielding gas along the circular welding line of the shielding gas device. The fixed rod connects the front protective gas device with the laser head, so that the protective gas device can move along with the laser head.
Two screw holes are formed in the upper portion of the front-section shielding gas device, the front-section shielding gas device is connected with a shielding gas pipe through a quick connection-disconnect joint to form two shielding gas channels which are respectively used for gas shielding of a molten pool and a welded seam.
Anterior segment protective gas device anterior segment be oblique semicircle column, its inclination is 60, and reserve one section distance with protective gas device bottom for protective gas can form the gas curtain above the molten bath, more effectual protects the molten bath.
Screw holes are formed in two sides of the front section protective gas device and used for connecting the connecting rod and the fixing rod.
The front section, the middle section and the rear section of the protective gas device are all used for carrying out gas protection on the welding seams by a shell structure.
The bottoms of the front section, the middle section and the rear section of the protective gas device are provided with notches respectively for avoiding welding seams formed by welding and reducing obstruction when the protective gas device moves.
The front section, the middle section and the rear section of the protective gas device are provided with clamping grooves for installation of the splitter plate, and the splitter plate is provided with a plurality of holes for atomization of the beam-shaped gas flow, so that the whole cavity is filled with the protective gas. The splitter plate can be paved with a copper net to further enhance the airflow atomization effect.
The fixing rod is provided with a long notch, so that the relative position of the laser and the protective gas device can be adjusted.
The invention provides a laser welding protective gas device for a titanium alloy annular welding seam, which is characterized in that a front protective gas device, a middle protective gas device and a rear protective gas device are used for carrying out gas protection on a molten pool and the welding seam formed after welding, and all the parts are connected through a connecting rod and can rotate relatively, so that the movement of the protective gas device along the annular welding seam is realized. The long notch on the fixed rod enables the protective gas device to be capable of adjusting the position relative to the laser head, and the adaptability of the protective gas device is improved. The device has solved the poor problem of ordinary protection gas bank pipe and sharp welding seam protective gas device to the annular weld protection effect, can effectively protect to the annular weld.
Drawings
FIG. 1 is an isometric view of a laser welding shielding gas apparatus of a titanium alloy girth weld in one embodiment.
FIG. 2 is an isometric view of a front section of a laser welding shielding gas apparatus of the titanium alloy girth weld in accordance with an embodiment.
FIG. 3 is an isometric view of a middle section of a laser welding shielding gas apparatus of the titanium alloy girth weld in accordance with an embodiment.
FIG. 4 is an isometric view of a back section of a laser welding shielding gas apparatus of the titanium alloy girth weld in accordance with an embodiment.
FIG. 5 is an isometric view of a laser welded shielding gas apparatus securing rod and tie rod for the titanium alloy girth weld in accordance with an embodiment.
FIG. 6 is an isometric view of a laser welded shielding gas device splitter plate of the titanium alloy girth weld in accordance with an embodiment.
Detailed Description
The present invention will be described in more detail below with reference to the accompanying drawings, which are not intended to limit the invention to the specific embodiments described below. Terms such as "horizontal", "vertical", "right", and the like, as used herein, are for illustrative purposes only and are not limiting of the present invention.
Referring to fig. 1, a laser welding shielding gas apparatus for a titanium alloy girth weld in one embodiment is used for laser welding of the titanium alloy girth weld. The laser welding protective gas device for the titanium alloy circular weld joint comprises a front section protective gas device 1, a middle section protective gas device 2, a rear section protective gas device 3, a fixing rod 4, an M4 screw 5 and a connecting rod 6.
Referring to fig. 2 together, the threaded hole 10 and the threaded hole 11 are connected with two pneumatic quick-thread through connectors above the front-section protective gas device, so that the front-section protective gas device is connected with the protective gas pipe, the protective gas of the molten pool is conveyed through the threaded hole 10, and the gas forms a gas curtain through the gas passage 12 to perform gas protection on the molten pool area. Referring to fig. 6 together, realize carrying the protective gas of anterior segment protective gas device cavity 19 through screw hole 11, draw-in groove 18 installation splitter 7 can lay the copper mesh on the splitter 7, and the protective gas makes the atomizing of beam-shaped protective gas and is full of cavity 19 through splitter 7, realizes the protection to the uncooled welding seam. Referring to fig. 5, the threaded holes 16 and 17 are connected with the through holes 51 and 52 of the connecting rod 6 through the M4 screw 5 to realize connection and relative rotation with the rear-end shielding gas device. The threaded hole 15 is connected with the through hole 42 on the fixing rod 4 through the M4 screw 5 so as to realize the connection and relative rotation of the fixing rod and the front section shielding gas, the long notch 41 is connected with the laser head through the M4 screw, and the relative position of the shielding gas device and the laser head can be adjusted by adjusting the position of the M4 screw on the long notch. The bottom of the front section shielding gas device is provided with notches 13 and 14 which are used for avoiding formed welding seams and reducing the motion resistance.
Referring to fig. 3 in the lump, through middle section protective gas device top screw hole 20 with pneumatic quick screw thread through-connection connect continuous, realize that middle section protective gas device and protective gas pipe are connected, realize the gas transportation to middle section protective gas device cavity 22 through screw hole 20, draw-in groove 27, 28 department installation splitter 8, can lay the copper mesh on splitter 8, protective gas makes protective gas atomizing and be full of the cavity through splitter 8, realizes the protection to uncooled welding seam. The threaded holes 23, 24, 25 and 26 are connected with the through holes of the connecting rods through M4 screws, so that the middle section protective gas device is connected with the front section protective gas device and the rear section protective gas device and can rotate relatively. The bottom of the middle section protective gas device is provided with notches 21 and 22 for reducing the motion resistance. The middle section shielding gas device shown in the figure can be added according to actual conditions, and the length of the whole shielding gas device is adjusted.
Referring to fig. 4 together, the threaded hole 30 above the rear-section shielding gas device is connected with the pneumatic quick-threaded through joint, so that the rear-section shielding gas device is connected with the shielding gas pipe, gas transmission to the cavity 36 of the middle-section shielding gas device is realized through the threaded hole 30, the splitter plates 8 are installed at the clamping grooves 34 and 35, the splitter plates 8 can be paved with copper meshes, and the shielding gas is atomized and filled in the cavity through the splitter plates 8, so that the protection of the uncooled welding line is realized. The threaded holes 32 and 33 are connected with the through holes of the connecting rods through M4 screws, so that the rear section protective gas device and the middle section protective gas device are connected and rotate. The back section of the shielding gas device is provided with a notch 31 at the bottom to reduce the motion resistance, and the bottom back section is not provided with a notch to reduce the loss of the shielding gas.
The motion situation schematic diagram of the whole protective gas device is consistent with that of fig. 1, and the annular welding seam path can be attached to the mutual rotation of the front protective gas device 1, the middle protective gas device 2 and the rear protective gas device 3, so that the gas protection of the annular welding seam is realized.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the invention and are not to be construed as limitations of the embodiments of the present invention, but may be modified in various embodiments and applications by those skilled in the art according to the spirit of the present invention, and the content of the present description should not be construed as a limitation of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. The laser welding protective gas device for the titanium alloy annular welding seam is characterized by comprising a front section protective gas device, a middle section protective gas device, a rear section protective gas device, a connecting rod and a fixing rod.
The front section, the middle section and the rear section of the shielding gas device are connected with the screw through the connecting rod, and the connecting rod rotates around the screw relatively to realize the relative rotation of the front section, the middle section and the rear section of the shielding gas device so as to realize the conveying of the shielding gas along the circular welding line of the shielding gas device. The fixed rod connects the front protective gas device with the laser head, so that the protective gas device can move along with the laser head.
2. The laser welding shielding gas apparatus for a titanium alloy girth weld according to claim 1, wherein: two screw holes are formed in the upper portion of the front-section shielding gas device, the front-section shielding gas device is connected with the shielding gas pipe through the quick connection-disconnect fitting to form two shielding gas channels which are respectively used for gas shielding of a molten pool and a welded seam.
3. The laser welding shielding gas apparatus for a titanium alloy girth weld according to claim 1, wherein: the anterior segment protective gas device anterior segment is oblique semicircle column, and its inclination is 60, and reserves one section distance with protective gas device bottom for protective gas can form the gas curtain above the molten bath, more effectual protects the molten bath.
4. The laser welding shielding gas apparatus for a titanium alloy girth weld according to claim 1, wherein: screw holes are formed in two sides of the front section protective gas device and used for connecting the connecting rod and the fixing rod.
5. The laser welding shielding gas apparatus for a titanium alloy girth weld according to claim 1, wherein: the front section, the middle section and the rear section of the protective gas device are all used for protecting the gas of the welding seam by a shell structure.
6. The laser welding shielding gas apparatus for a titanium alloy girth weld according to claim 1, wherein: notches are formed in the bottoms of the front section protective gas device, the middle section protective gas device and the rear section protective gas device, welding seams formed by welding are avoided, and obstruction when the protective gas device moves is reduced.
7. The laser welding shielding gas apparatus for a titanium alloy girth weld according to claim 1, wherein: the clamping grooves are formed in the front section protective gas device, the middle section protective gas device and the rear section protective gas device, the splitter plate is installed, a plurality of holes are formed in the splitter plate, and the splitter plate is used for atomizing the beam-shaped gas flow, so that the whole cavity is filled with the protective gas. The splitter plate can be paved with a copper net to further enhance the airflow atomization effect.
8. The laser welding shielding gas apparatus for a titanium alloy girth weld according to claim 1, wherein: the fixing rod is provided with a long notch, so that the relative position of the laser and the protective gas device can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404863.0A CN111545903A (en) | 2020-05-13 | 2020-05-13 | Laser welding protective gas device for titanium alloy annular welding seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404863.0A CN111545903A (en) | 2020-05-13 | 2020-05-13 | Laser welding protective gas device for titanium alloy annular welding seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111545903A true CN111545903A (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010404863.0A Withdrawn CN111545903A (en) | 2020-05-13 | 2020-05-13 | Laser welding protective gas device for titanium alloy annular welding seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111545903A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620940A (en) * | 2020-12-02 | 2021-04-09 | 北京航星机器制造有限公司 | Flexible laser welding gas protection device and welding method |
| CN112719530A (en) * | 2021-01-24 | 2021-04-30 | 福州大学 | Combined gas protection device for electric arc additive manufacturing and using method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20221984U1 (en) * | 2002-11-28 | 2010-02-11 | Baeger, Holm, Dr.-Ing. | Laser arrangement for processing, in particular inscription of workpiece surfaces |
| CN106346117A (en) * | 2015-07-15 | 2017-01-25 | 空中客车运营简化股份公司 | Weld protecting device by gas diffusion |
| DE102015122783A1 (en) * | 2015-12-23 | 2017-06-29 | GL Automation GmbH | Welding device and method |
| CN107931838A (en) * | 2017-12-16 | 2018-04-20 | 洛阳鹏起实业有限公司 | Laser soldering device and its side-blown gas shielded structure, position regulating part |
| CN110064845A (en) * | 2019-05-07 | 2019-07-30 | 武汉金顿激光科技有限公司 | A kind of gas shield device of hybrid Laser-Arc Welding machine |
-
2020
- 2020-05-13 CN CN202010404863.0A patent/CN111545903A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20221984U1 (en) * | 2002-11-28 | 2010-02-11 | Baeger, Holm, Dr.-Ing. | Laser arrangement for processing, in particular inscription of workpiece surfaces |
| CN106346117A (en) * | 2015-07-15 | 2017-01-25 | 空中客车运营简化股份公司 | Weld protecting device by gas diffusion |
| DE102015122783A1 (en) * | 2015-12-23 | 2017-06-29 | GL Automation GmbH | Welding device and method |
| CN107931838A (en) * | 2017-12-16 | 2018-04-20 | 洛阳鹏起实业有限公司 | Laser soldering device and its side-blown gas shielded structure, position regulating part |
| CN110064845A (en) * | 2019-05-07 | 2019-07-30 | 武汉金顿激光科技有限公司 | A kind of gas shield device of hybrid Laser-Arc Welding machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620940A (en) * | 2020-12-02 | 2021-04-09 | 北京航星机器制造有限公司 | Flexible laser welding gas protection device and welding method |
| CN112719530A (en) * | 2021-01-24 | 2021-04-30 | 福州大学 | Combined gas protection device for electric arc additive manufacturing and using method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200818 |
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| WW01 | Invention patent application withdrawn after publication |