CN111014954B - Laser filler wire welding wire feeding and all-dimensional gas protection composite mechanism - Google Patents
Laser filler wire welding wire feeding and all-dimensional gas protection composite mechanism Download PDFInfo
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- CN111014954B CN111014954B CN201911337972.9A CN201911337972A CN111014954B CN 111014954 B CN111014954 B CN 111014954B CN 201911337972 A CN201911337972 A CN 201911337972A CN 111014954 B CN111014954 B CN 111014954B
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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
- B23K26/211—Bonding by welding with interposition of special material to facilitate connection of the parts
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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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
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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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/703—Cooling arrangements
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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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
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Abstract
The invention provides a wire feeding and all-dimensional gas protection composite mechanism for laser filler wire welding, which relates to the technical field of laser welding and comprises an outer cover body, an inner shell, a wire feeding mechanism, a supporting beam and a connecting flange; wherein the outer cover body comprises an arched outer cover and an outer cavity light-transmitting window; the inner shell comprises a spherical inner shell and an inner cavity light-transmitting window; the outer cover body is assembled and connected with the inner shell through the supporting cross beam to form a double-cavity structure; the wire feeding mechanism and the connecting flange are arranged on the outer cover body; the outer cover body is connected with the laser working head through the connecting flange. The invention can input different protective gases into the inner cavity and the outer cavity, carry out gas protection on the welding part, inhibit laser welding plasma and improve the utilization rate of welding energy; argon is used for filling the outer cavity, and gas protection is carried out on the welding high-temperature position, so that the welding quality is improved.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a wire feeding and all-dimensional gas protection composite mechanism for laser filler wire welding.
Background
Welding is an important material processing method and is also a main mode for connecting metal materials. In the production and manufacturing process of equipment in various fields of petrochemical industry, vehicles and ships, aerospace and the like, components are required to be connected through welding. The traditional electric arc welding is a welding method widely applied to the current engineering, and has the defects of large heat input quantity, large deformation, wide heat affected zone and the like. When a medium plate is welded, a groove is required to be formed in the traditional arc welding, the plate is welded through a multi-layer and multi-channel process mode, and the efficiency is low. Laser welding is a high-energy beam welding method developed on the basis of the traditional fusion welding process, and welding is carried out by introducing a laser heat source with high energy density. The laser welding has the advantages of small heat input, small deformation, narrow heat affected zone and the like, and is an advanced high-efficiency welding method. Therefore, the laser welding is beneficial to overcoming the defects of large heat input amount, large stress and the like of the traditional arc welding, and the welding quality and efficiency are improved. However, in the actual laser welding process, there are some problems, such as that the laser welding is performed in an open operation space, and the molten metal and the post-welding metal at a high temperature stage are easily oxidized, which is not favorable for the quality of the welded joint. When the laser welding method using the enclosed space for inert gas shielding is adopted to overcome the above problems, feeding of the welding wire material and synchronous movement with the heat source are difficult, especially in the narrow local enclosed space. In addition, the laser beam has high energy density and high heating efficiency, welding plasma is easily generated in the laser welding process, the welding effect and the welding stability are influenced, and reasonable control is needed.
At present, a follow-up cover supporting or supporting mode is mostly adopted for a gas protection device for laser welding, the protection range is limited, the space is open, oxygen in the air cannot be completely isolated, the protection effect is poor due to mixed oxygen, and the quality of a laser welding head is affected. And a few local inert gases or vacuum protection cavities do not have the wire feeding function, so that the application of laser welding on engineering is limited by the problems.
Therefore, those skilled in the art are devoted to developing a welding device capable of achieving an accurate wire feeding function and an all-directional gas shielding function of a laser wire filling welding closed space.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problems to be solved by the present invention are: the omnibearing gas protection is realized in the laser welding process; secondly, in the laser welding process, the welding wire in the closed space is accurately fed and moves synchronously with a heat source; and thirdly, reasonably inhibiting and controlling the laser welding plasma.
In order to achieve the aim, the invention provides a laser filler wire welding wire feeding and omnibearing gas protection composite mechanism, which comprises an outer cover body, an inner shell, a wire feeding mechanism, a supporting beam and a connecting flange, wherein the outer cover body is provided with a first opening and a second opening; wherein the outer cover body comprises an arched outer cover and an outer cavity light-transmitting window; the inner shell comprises a spherical inner shell and an inner cavity light-transmitting window; the outer cover body is assembled and connected with the inner shell through the supporting cross beam to form a double-cavity structure; the wire feeding mechanism and the connecting flange are arranged on the outer cover body; the outer cover body is connected with the laser working head through the connecting flange.
Further, the outer cavity light-transmitting window is arranged at the center of the top of the arched outer cover; the inner cavity light-transmitting window is arranged at the central position on the top of the spherical inner shell; the outer cavity light-transmitting window and the inner cavity light-transmitting window are positioned on the same central line.
Furthermore, a cooling liquid channel is formed in the supporting cross beam, and a cooling liquid inlet and a cooling liquid outlet are respectively arranged at two ends of the supporting cross beam.
Furthermore, a plurality of inner cavity air holes are uniformly distributed on the inner side of the spherical inner shell.
Furthermore, the supporting beam is also provided with an inner cavity air inlet.
Further, an outer cover passing weld opening is formed in the bottom of the right side of the outer cover body; an inner shell over-welding opening is formed in the bottom of the right side of the inner shell; the outer cover over weld joint is aligned with the inner shell over weld joint and is on the same center line.
Furthermore, an air curtain air passage is formed in the arched outer cover above the cross welding opening, the inlet of the air curtain air passage is formed in the right side of the arched outer cover, and the outlet of the air curtain air passage is downward at the top of the cross welding opening of the outer cover.
Furthermore, the outer cover body is also provided with 2 outer cavity air inlets which are respectively arranged at two sides of the arched outer cover.
Furthermore, a plurality of outer cavity air holes are uniformly distributed on the inner side of the arched outer cover opposite to the 2 outer cavity air inlets.
Further, the wire feeding mechanism comprises a wire feeding wheel and a wire feeding guide pipe, and the wire feeding guide pipe penetrates through the outer cover body and the inner shell body
Compared with the prior art, the invention has the following beneficial effects:
(1) the inner cavity of the composite mechanism can realize the suppression and control of welding plasma, the laser energy utilization rate can be improved through the space constraint of the inner cavity and the plasma suppression mechanism of helium, and the laser welding with high efficiency, stability, low stress and low deformation can be realized under the low-power condition.
(2) The unique design of the double-layer cavity structure enables a transition area to be arranged between the welding position in the inner cavity and the air outside the outer cover body, reduces the air entering the welding area, achieves a better protection effect, can use different protective gases in the inner cavity and the outer cavity, saves the cost and realizes a good protection effect.
(3) The all-round protection to the laser welding process is realized, including the welding position leading edge (get rid of the air in advance) that is about to be heated, the welding position and the high temperature region after welding.
(4) The function of accurately feeding wires in a closed area and synchronously moving the welding wires along with the laser working head is realized, and the laser welding head can be used for laser wire filling welding.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a front three-dimensional schematic view of a wire feeding and all-directional gas-shielded hybrid mechanism for laser filler wire welding according to a preferred embodiment of the present invention;
FIG. 2 is a bottom view of the composite laser filler wire feed and omni-directional gas shield mechanism of the present invention;
FIG. 3 is a schematic diagram of a wire feeding and all-directional gas-shielded hybrid mechanism for wire-filling laser welding according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a wire feeding and all-directional gas-shielded hybrid mechanism for wire-filling laser welding according to a second embodiment of the present invention;
the welding method comprises the following steps of 1-laser beam, 2-connecting flange, 3-outer cover body, 4-outer cavity air inlet, 5-air curtain air passage inlet, 6-metal test plate to be welded, 7-outer cavity light-transmitting window, 8-welding wire, 9-wire feeding guide pipe, 10-wire feeding wheel, 11-inner cavity air inlet, 12-cooling liquid inlet, 13-inner shell, 14-inner cavity air hole, 15-inner cavity light-transmitting window, 16-supporting beam, 17-cooling liquid outlet, 18-outer cavity air hole, 19-air curtain air passage outlet, 20-welded metal, 21-molten pool, 22-plasma, 23-molten drop, 24-inner cavity, 25-outer cavity, 26-outer cover welding opening and 27-inner shell welding opening.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1 and fig. 2, the present invention provides a wire feeding and all-directional gas protection composite mechanism for laser wire filling welding, which comprises an outer cover body 3, an inner shell body 13, a wire feeding mechanism, a supporting beam 16 and a connecting flange 2; the outer cover body 3 is assembled and connected with the inner shell 13 through a supporting beam 16 to form a double-cavity structure; the wire feeding mechanism and the connecting flange 2 are arranged on the outer cover body 3; the outer cover body 3 is connected with the laser working head through the connecting flange 2, and the effect of synchronous movement along with a welding heat source is achieved.
The outer cover body 3 comprises an arched outer cover and an outer cavity light-transmitting window 7; the outer cavity light-transmitting window 7 is arranged at the center of the top of the arched outer cover; there is a breach to make the dustcoat and crosses weld bond 26 the 3 right sides bottom of the dustcoat body, there is the gas curtain air flue in the dustcoat body 3 on the weld bond 26 is crossed to the dustcoat, gas curtain air flue entry 5 is seted up in the 3 right sides of the dustcoat body, gas curtain air flue export 19 passes weld bond 26 top at the dustcoat downwards, inert protective gas advances from gas curtain air flue entry 5, it spouts downwards to come out from gas curtain air flue export 19, form one gas curtain and seal the dustcoat and cross weld bond 26, in order to obstruct outside air entering the dustcoat body 3 and weld back metal 20. The two sides of the arched outer cover are respectively provided with an outer cavity air inlet 4, a plurality of outer cavity air holes 18 are uniformly distributed at the positions of the inner side of the arched outer cover corresponding to the two outer cavity air inlets 4, and inert protective gas enters from the two outer cavity air inlets 4 and enters into the outer cavity 25 through the plurality of outer cavity air holes 18 in a speed reducing and dispersing manner.
The inner housing 13 comprises a spherical inner housing and an inner cavity light transmission window 15; the inner cavity light-transmitting window 15 is arranged at the top center position of the spherical inner shell and is positioned on the same central line with the outer cavity light-transmitting window 7. The bottom of the right side of the inner shell 13 is notched as an inner shell pass-weld 27, aligned with the outer shell pass-weld 26, on the same centerline, for the passage of excess post-weld metal 20 on the post-weld surface. The spherical inner shell is a hollow hemisphere, a plurality of inner cavity air holes 14 are uniformly distributed on the inner side of the spherical inner shell, and inert protective gas enters from the inner cavity air inlet 11 and is decelerated and dispersed through the plurality of inner cavity air holes 14 to enter the inner cavity 24.
The supporting beam 16 is internally provided with a cooling liquid channel, a cooling liquid inlet 12 and a cooling liquid outlet 17 are arranged at two ends of the supporting beam 16, and the cooling liquid is used for cooling the whole device. The support beam 16 also has an internal cavity air inlet 11.
The wire feeding mechanism is arranged at the upper left part of the outer cover body 3 and comprises a wire feeding wheel 10 and a wire feeding guide pipe 9, the wire feeding guide pipe 9 penetrates through the outer cover body 3 and the inner shell body 13, and a welding wire 8 is guided into a welding position through the wire feeding mechanism during use.
The composite mechanism is placed on a metal test plate 6 to be welded, an inner cavity 24 is defined by the inner shell 13 and the metal test plate 6 to be welded, an outer cavity 25 is defined by the outer cover body 3, the inner shell 13 and the metal test plate 6 to be welded, namely, the space between the inner side of the outer cover body 3 and the outer side of the inner shell 13 is the outer cavity 25.
As shown in fig. 1, 2 and 3, during welding, the composite mechanism of the present invention is placed on a metal test plate 6 to be welded, the left direction of the present embodiment is the welding direction, and the wire feeding mechanism is placed along the direction of the weld seam. The entire arrangement is connected to the laser working head via the connecting flange 2, and the welding wire 8 is fed from the wire feed conduit 9 into the interior 24 to the welding position. The laser beam 1 is emitted to the welding position through the outer cavity light-transmitting window 7 and the inner cavity light-transmitting window 15, the welding wire 8 is melted by the energy and the heat provided by the laser beam 1, a molten drop 23 is generated, a molten pool 21 is formed, and the metal test plates 6 to be welded are welded evenly. When the device works, inert protective gas such as argon is introduced into the outer cavity air inlet 4, the argon is decelerated and dispersed through the outer cavity air holes 18 and enters the outer cavity 25 to form an inert gas protective gas hood, and gas protection can be carried out on the welding high-temperature position. Inert protective gas such as helium is introduced into the inner cavity air inlet 11, the helium enters the inner shell 13 through the protective gas pipeline in the supporting beam 16 and then enters the inner cavity 24 through the inner cavity air holes 14 in a speed reducing and dispersing mode, the space constraint of the inner cavity 13 and the filled helium form a plasma inhibition gas hood in the protective inner cavity, the expansion and the expansion of the plasma 22 are effectively inhibited, the welding energy utilization rate is favorably improved, the laser energy is saved, and the welding process is stabilized. In addition, circulating cooling water is connected to the inner cavity cooling liquid inlet 12, flows out from the inner cavity cooling liquid outlet 17, cools the whole device through the cooling channel, and controls the welding temperature to avoid overheating. In the whole welding process, the composite mechanism moves synchronously with the welding heat source, and the welded metal 20 passes through the inner shell through the crater 27 and the outer cover through the crater 26.
The first embodiment is as follows:
as shown in fig. 3 and fig. 1, in this embodiment, a steel material with a thickness of 8mm is selected as a metal test plate 6 to be welded, and laser filler wire welding is performed, and the wire feeding and all-directional gas shielding composite mechanism for laser filler wire welding realizes the functions of laser welding wire feeding and all-directional gas shielding, and the specific implementation steps are as follows:
(1) preparing a metal test plate 6 to be welded: polishing the side surface of a steel plate with the thickness of 8mm to be flat, removing surface oxides and stains, and then installing the steel plate on a clamp to form a butt joint;
(2) the whole composite mechanism is placed on a metal test plate 6 to be welded, the whole mechanism is symmetrical about a welding line, and meanwhile, the wire feeding mechanism is placed along the direction of the welding line and is arranged on the left side of the outer cover body 3;
(3) the whole mechanism is connected with a laser working head through a connecting flange 2, the defocusing amount is set, and after the height is adjusted, a welding wire 8 is loaded, so that the welding wire 8 is led into an inner cavity 24 through a wire feeding guide pipe 9 and reaches a welding position;
(4) setting technological parameters: the laser power is set to be 7kW, the welding speed is set to be 1.2m/min, and the wire feeding speed is set to be 5 m/min;
(5) introducing inert protective gas argon into the two outer cavity air inlets 4 and the air curtain air passage inlet 5, wherein the flow of the argon gas at the outer cavity air inlet 4 is set to be 20L/min, and the flow of the argon gas at the air curtain air passage inlet 5 is set to be 10L/min;
(6) introducing helium into the inner cavity air inlet 11, wherein the gas flow is set to be 15L/min;
(7) circulating cooling water is introduced into the cooling liquid inlet 12, and the flow rate of the cooling liquid is set to be 5L/min;
(8) and starting welding, wherein the welding direction is towards the left, the inner cavity 24, the outer cavity 25 and the gas curtain are ensured to be continuously filled with inert gas in the welding process, and the cooling channel is filled with circulating cooling water.
One embodiment is a process for applying the composite structure of the present invention to laser filler wire bonding, and the operation of the process is schematically shown in fig. 3. The welding wire 8 moves along with the composite mechanism, and the composite mechanism is connected with the laser working head through the connecting flange 2, so that the welding wire 8 moves synchronously along with the welding working head; the double-layer cavity protection mechanism realizes the omnibearing protection of the front edge of the welding position, the welding position and the welded metal 20. And simultaneously effectively inhibits the expansion and the expansion of welding plasma.
Example two:
as shown in fig. 4 and fig. 1, in this embodiment, a titanium alloy with a thickness of 2mm is selected as a metal test plate 6 to be welded for laser welding, and the composite mechanism of the present invention is used for protection in the titanium alloy laser welding process, and the specific implementation steps are as follows:
(1) preparing a metal test plate 6 to be welded: polishing the side surface of a titanium alloy plate with the thickness of 2mm to be flat, removing surface oxides and stains, and then installing the titanium alloy plate on a clamp to form a butt joint;
(2) placing the whole composite mechanism on a metal test plate 6 to be welded to ensure that the whole mechanism is symmetrical about a welding line;
(3) the whole mechanism is connected with the laser working head through the connecting flange 2, the defocusing amount is set, and the height is adjusted;
(4) setting technological parameters: the laser power is set to 5kW, and the welding speed is set to 5 m/min;
(5) introducing inert protective gas argon into the two outer cavity air inlets 4 and the air curtain air passage inlet 5, wherein the flow of the argon gas at the outer cavity air inlet 4 is set to be 20L/min, and the flow of the argon gas at the air curtain air passage inlet 5 is set to be 10L/min;
(6) introducing helium into the inner cavity air inlet 11, wherein the gas flow is set to be 15L/min;
(7) circulating cooling water is introduced into the cooling liquid inlet 12, and the flow rate of the cooling liquid is set to be 5L/min;
(8) and starting welding, wherein the welding direction is towards the left, the inner cavity 24, the outer cavity 25 and the gas curtain are ensured to be continuously filled with inert gas in the welding process, and the cooling channel is filled with circulating cooling water.
The second embodiment is a process of using the composite mechanism of the invention in laser, and the working schematic diagram is shown in fig. 4. As can be seen from the temperature diagram of the post-weld metal 20 in the second embodiment, the post-weld metal in the temperature range of 200 ℃ to 1600 ℃ is protected by the inert gas from the outer cover over-weld crater 26 to the inner cover over-weld crater 27 of the post-weld metal 20 in the outer cover 3, and the post-weld oxidation of the titanium alloy is effectively prevented.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. A laser filler wire welding wire feeding and omnibearing gas protection composite mechanism is characterized by comprising an outer cover body, an inner shell, a wire feeding mechanism, a supporting beam and a connecting flange; wherein the outer cover body comprises an arched outer cover and an outer cavity light-transmitting window; the inner shell comprises a spherical inner shell and an inner cavity light-transmitting window; the outer cover body is assembled and connected with the inner shell through the supporting cross beam to form a double-cavity structure; the wire feeding mechanism and the connecting flange are arranged on the outer cover body; the outer cover body is connected with the laser working head through the connecting flange; the outer cavity light-transmitting window and the inner cavity light-transmitting window are configured to enable the laser beam to pass through and irradiate the welding position; a plurality of inner cavity air holes are uniformly distributed on the inner side of the spherical inner shell; an inner cavity air inlet is formed in the supporting beam; the outer cover body is also provided with 2 outer cavity air inlets which are respectively arranged at two sides of the arched outer cover; and a plurality of outer cavity air holes are uniformly distributed on the inner side of the arched outer cover opposite to the 2 outer cavity air inlets.
2. The wire feed and omnidirectional gas shield composite mechanism for laser filler wire welding according to claim 1, wherein said external cavity light transmissive window is disposed centrally on the dome-shaped enclosure top; the inner cavity light-transmitting window is arranged at the central position on the top of the spherical inner shell; the outer cavity light-transmitting window and the inner cavity light-transmitting window are positioned on the same central line.
3. The wire-feeding and all-directional gas-shielding combined mechanism for laser filler wire welding according to claim 1, wherein a cooling fluid channel is formed in the supporting beam, and a cooling fluid inlet and a cooling fluid outlet are respectively formed at two ends of the supporting beam.
4. The wire-feeding and all-directional gas-shielding composite mechanism for laser wire-filling welding according to claim 1, wherein a cover weld-passing opening is formed at the bottom of the right side of the outer cover body; an inner shell over-welding opening is formed in the bottom of the right side of the inner shell; the outer cover over weld joint is aligned with the inner shell over weld joint and is on the same center line.
5. The wire-feeding and all-directional gas-shielding combined mechanism for laser filler wire welding according to claim 4, wherein an air curtain air passage is formed in the arched outer cover above the outer cover over-welding opening, the inlet of the air curtain air passage is formed on the right side of the arched outer cover, and the outlet of the air curtain air passage is downward at the top of the outer cover over-welding opening.
6. The wire-feeding and all-directional gas-shielding combined mechanism for laser filler wire welding according to claim 1, wherein the wire-feeding mechanism comprises a wire-feeding wheel and a wire-feeding guide pipe; the wire feed conduit passes through the outer housing and the inner housing.
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| CN201911337972.9A CN111014954B (en) | 2019-12-23 | 2019-12-23 | Laser filler wire welding wire feeding and all-dimensional gas protection composite mechanism |
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| CN201911337972.9A CN111014954B (en) | 2019-12-23 | 2019-12-23 | Laser filler wire welding wire feeding and all-dimensional gas protection composite mechanism |
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| CN114043082A (en) * | 2021-12-03 | 2022-02-15 | 福建省富达精密科技有限公司 | Seamless laser welding process and tool for television frame |
| CN114346418B (en) * | 2022-02-28 | 2023-02-03 | 福建奥瑞斯机器人工程技术有限公司 | Multi-shaft gantry laser welding machine |
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| CN2762935Y (en) * | 2005-01-20 | 2006-03-08 | 深圳职业技术学院 | Laser welding gun |
| CN102909465A (en) * | 2012-10-24 | 2013-02-06 | 天津大学 | Titanium tube welding gas protection cover of fixed welding gun |
| CN203579012U (en) * | 2013-11-26 | 2014-05-07 | 台州学院 | Gas protection cover for laser processing |
| JP6285749B2 (en) * | 2014-02-25 | 2018-02-28 | 日新製鋼株式会社 | Manufacturing method of vacuum insulation panel |
| CN106112280B (en) * | 2016-07-11 | 2018-03-13 | 长沙理工大学 | A kind of laser perforation method |
| CN108213700A (en) * | 2016-12-09 | 2018-06-29 | 宁波方太厨具有限公司 | For the coaxial gas protective device of laser welding |
| CN207077115U (en) * | 2017-05-03 | 2018-03-09 | 华侨大学 | A kind of bicavate laser welder coaxial-type protection device |
| CN108672934A (en) * | 2018-04-25 | 2018-10-19 | 西安飞机工业（集团）有限责任公司 | A kind of gas shield device of titanium alloy conduit laser welding and guard method |
| CN108581155A (en) * | 2018-05-11 | 2018-09-28 | 江苏大学 | A kind of air-flow recompressing plasma arc welding procedure |
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