CN105290613A - Vacuum welding device and method for preventing laser seam from generating pores - Google Patents
Vacuum welding device and method for preventing laser seam from generating pores Download PDFInfo
- Publication number
- CN105290613A CN105290613A CN201510730876.6A CN201510730876A CN105290613A CN 105290613 A CN105290613 A CN 105290613A CN 201510730876 A CN201510730876 A CN 201510730876A CN 105290613 A CN105290613 A CN 105290613A
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- welding
- postwelding
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Classifications
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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
- B23K26/1224—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in vacuum
-
- 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
- B23K26/24—Seam welding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to a vacuum welding method for preventing a laser seam from generating pores. A vacuum welding device for preventing the laser seam from generating the pores is designed for the method. The vacuum welding device comprises a laser, a welding chamber, a focusing head and a vacuum pump; the laser and the vacuum pump are located outside the welding chamber; one end of the focusing head is connected with the laser through a laser conducting cable; the other end of the focusing head is inserted into the welding chamber; a pre-vacuum-pumping chamber is arranged on one side of the welding chamber; a postwelding sampling chamber is arranged on the other side of the welding chamber; the welding chamber is communicated with the pre-vacuum-pumping chamber and the postwelding sampling chamber; the pre-vacuum-pumping chamber, the welding chamber and the postwelding sampling chamber are communicated with the vacuum pump. The vacuum welding device and method for preventing the laser seam from generating the pores can prevent from generating the pores when the laser seam is solidified, the process is simple, and operation is convenient.
Description
Technical field
The present invention relates to laser welding technology field, refer to a kind of vacuum welding device and the method that prevent laser welded seam generation pore particularly.
Background technology
Welding heat affected zone is little owing to having for Laser Welding, weldment distortion less, without the need to the advantage such as electrode and solder, be widely used in automobile component produce in.
But Laser Welding cooling velocity is fast, and weld seam does not have safeguard measure, easily produces pore when molten pool metal solidifies.Those skilled in the art analyze discovery, its main cause is that the nitrogen in air is when being involved in weld seam molten bath, if cooling rate is slower, gas can float and spill in air, and Laser Welding cooling velocity is very fast, the nitrogen in molten bath and other gas often have little time emersion and are set in weld seam and form pore.
Pore belongs to a kind of weld defect, and steel plate is when punching press, and pore position usually becomes the fracture origin of steel plate cracking, and steel plate is scrapped because fracture cannot use.
Summary of the invention
Object of the present invention is exactly that the laser welded seam that prevents that a kind of compact conformation, technique will be provided simple, easy to operate produces vacuum welding device and the method for pore.
For achieving the above object, the laser welded seam that prevents designed by the present invention produces the vacuum welding device of pore, comprises laser instrument, welding booth, focus head, vavuum pump; Described laser instrument and vavuum pump are all positioned at outside described welding booth, and one end of described focus head is pulled by laser conduction line and is connected with laser instrument, and the other end of described focus head inserts in welding booth; The side of described welding booth is provided with preevacuated chamber, and the opposite side of described welding booth is provided with postwelding sampling room, and described welding booth is all communicated with described postwelding sampling room with described preevacuated chamber; Described preevacuated chamber, described welding booth are communicated with described vavuum pump respectively with described postwelding sampling room.
Further, described preevacuated chamber is provided with the first hatch door, is provided with the first valve between described preevacuated chamber and described welding booth; Described postwelding sampling room is provided with the second hatch door, is provided with the second valve between described postwelding sampling room and described welding booth.
Further, described welding booth is surrounded by high-strength clear glass; The bottom of described preevacuated chamber, described welding booth and described postwelding sampling room is provided with workbench walking track.
Further, described preevacuated chamber, described welding booth are communicated with described vavuum pump respectively by pipeline with described postwelding sampling room, and described pipeline is provided with by-pass valve control, and described vavuum pump is provided with Pressure gauge.
The present invention utilizes the laser welded seam that prevents of said apparatus to produce the vacuum welding method of pore, comprises following operating procedure:
Step 1: close the second hatch door, the first valve and the second valve, starts vavuum pump and carries out forvacuum to welding booth and postwelding sampling room;
Step 2: put into by sample to be welded on the welding bench of described forvacuum indoor, close the first hatch door, after starting vacuum pump evacuation, opens the first valve, welding bench is moved to welding booth, and close the first valve;
Step 3: start laser instrument, aims at weld seam after being focused on by laser line focus head and welds, and after welding, closes laser instrument;
Step 4: open the second valve, moves to postwelding sampling room by welding bench, close the second valve, opens the second hatch door, takes out the sample welded, and closes the second hatch door.
Further, in described step 2, by described welding bench along workbench walking rail moving to described welding booth; In described step 4, by described welding bench along workbench walking rail moving to described postwelding sampling room.
Further, described vavuum pump monitors house vacuum state by Pressure gauge, after described vavuum pump quits work, and the by-pass valve control in closing duct.
Beneficial effect of the present invention is: welding is placed in vacuum environment and carries out by the present invention, avoid air and bead contact, being involved in of the gases such as nitrogen is not had when weld seam solidifies, the a small amount of gas simultaneously produced during welding can overflow rapidly because of the low pressure under vacuum environment, avoid weld seam and form pore because cooling fast, thus reach the object preventing weld seam from producing gas; The present invention is respectively equipped with reserved vacuum chamber and postwelding sampling room as transition chamber in both sides, welding booth, only close the valve of the both sides of welding booth, then welding booth can be kept always to be in vacuum state, reduce the pumpdown time when sample introduction and sampling; Welding is in be carried out close under vacuum state, and weld seam molten bath is not easily oxidized, and weldquality is better; Welding booth is surrounded by high-strength clear glass, can Real Time Observation regulate laser weld position.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation preventing laser welded seam from producing the vacuum welding device of pore;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
In figure: laser instrument 1, welding booth 2, focus head 3, pipeline 4, sample to be welded 5, preevacuated chamber 6, welding bench 7, weld seam 8, workbench walking track 9, postwelding sampling room 10, vavuum pump 11, first hatch door 12, second hatch door 13, first valve 14, second valve 15, by-pass valve control 16, Pressure gauge 17.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
A kind of vacuum welding device preventing laser welded seam from producing pore as shown in Figures 1 and 2, comprises laser instrument 1, welding booth 2, focus head 3, vavuum pump 11; Described laser instrument 1 and vavuum pump 11 are all positioned at outside described welding booth 2, and one end of described focus head 3 is pulled by laser conduction line and is connected with laser instrument 1, and the other end of described focus head 3 inserts in welding booth 2; The side of described welding booth 2 is provided with preevacuated chamber 6, and the opposite side of described welding booth 2 is provided with postwelding sampling room 10, and described welding booth 2 is all communicated with described postwelding sampling room 10 with described preevacuated chamber 6; Described preevacuated chamber 6, described welding booth 2 are communicated with described vavuum pump 11 respectively with described postwelding sampling room 10.Described vavuum pump 11 vacuumizes whole device, make in whole device, to be in a kind of environment close to vacuum, sample 5 to be welded welds under vacuo, air is avoided to contact with weld seam 8, being involved in of the gases such as nitrogen is not had when weld seam solidifies, the a small amount of gas simultaneously produced during welding can overflow rapidly because of the low pressure under vacuum environment, avoids weld seam 8 and forms pore because cooling fast.
In technique scheme, described preevacuated chamber 6 is provided with the first hatch door 12, is provided with the first valve 14 between described preevacuated chamber 6 and described welding booth 2; Described postwelding sampling room 10 is provided with the second hatch door 13, is provided with the second valve 15 between described postwelding sampling room 10 and described welding booth 2.When vacuumizing welding, under hatch door and valve co-operate, when sample introduction and sampling, welding booth 2 all can be in the state of vacuum.
In technique scheme, described welding booth 2 is surrounded by high-strength clear glass, can Real Time Observation regulate laser weld position; The bottom of described preevacuated chamber 6, described welding booth 2 and described postwelding sampling room 10 is provided with workbench walking track 9, welding bench 7, under the manipulation of workbench walking track 9, can conveniently move around in preevacuated chamber 6, welding booth 2 and postwelding sampling room 10.
In technique scheme, described preevacuated chamber 6, described welding booth 2 are communicated with described vavuum pump 11 respectively by pipeline 4 with described postwelding sampling room 10, and described pipeline 4 is provided with by-pass valve control 16, and described vavuum pump 11 is provided with Pressure gauge 17.When described vavuum pump 11 quits work, closing control valve 16, can prevent air from entering from vavuum pump 11 in welding booth 2; Described Pressure gauge 17 can to monitor in vavuum pump 11 pressure to observe each house vacuum state.
Utilize the laser welded seam that prevents of said apparatus to produce the vacuum welding method of pore, comprise following operating procedure:
Step 1: close the second hatch door 13, first valve 14 and the second valve 15, starts vavuum pump 11 pairs of welding booths 2 and postwelding sampling room 10 and carries out forvacuum, pumpdown time when can reduce welding;
Step 2: sample 5 to be welded is put on the welding bench 7 of preevacuated chamber 6, close the first hatch door 12, after startup vavuum pump 11 pairs of preevacuated chambers 6 vacuumize, open the first valve 14, make preevacuated chamber 6 equal with welding booth 2 air pressure, welding bench 7 is moved to welding booth 2, and close the first valve 14, now close the first valve 14, when can ensure to open the first hatch door 12 sample introduction in next preevacuated chamber 6, welding booth 2 is still in vacuum state;
Step 3: start laser instrument 1, welding aiming at weld seam 8 after laser line focus 3 focusing, after welding, closing laser instrument 1;
Step 4: open the second valve 15, make welding booth 2 equal with postwelding sampling room 10 air pressure, welding bench 7 is moved to postwelding sampling room 10, close the second valve 15, now close the second valve 15, can ensure to open in postwelding sampling room 10 welding booth 2 when second hatch door 13 samples and still be in vacuum state; Open the second hatch door 13, take out the sample welded.
In technique scheme, in described step 2, described welding bench 7 is moved to described welding booth 2 along workbench walking track 9 under the manipulation of outside; In described step 4, described welding bench 7 is moved to described postwelding sampling room 10 along workbench walking track 9 under the manipulation of outside.
In technique scheme, described vavuum pump 11 monitors house vacuum state by Pressure gauge 17, after described vavuum pump 11 quits work, and the by-pass valve control 16 in closing duct 4.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also design some changes and retouching, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. prevent laser welded seam from producing a vacuum welding device for pore, it is characterized in that: comprise laser instrument (1), welding booth (2), focus head (3), vavuum pump (11); Described laser instrument (1) and vavuum pump (11) are all positioned at described welding booth (2) outward, one end of described focus head (3) is connected with laser instrument (1) by laser conduction cable, and the other end of described focus head (3) inserts in welding booth (2); The side of described welding booth (2) is provided with preevacuated chamber (6), the opposite side of described welding booth (2) is provided with postwelding sampling room (10), and described welding booth (2) are all communicated with described postwelding sampling room (10) with described preevacuated chamber (6); Described preevacuated chamber (6), described welding booth (2) are communicated with described vavuum pump (11) respectively with described postwelding sampling room (10).
2. the vacuum welding device preventing laser welded seam from producing pore according to claim 1, it is characterized in that: described preevacuated chamber (6) are provided with the first hatch door (12), between described preevacuated chamber (6) and described welding booth (2), be provided with the first valve (14); Described postwelding sampling room (10) is provided with the second hatch door (13), is provided with the second valve (15) between described postwelding sampling room (10) and described welding booth (2).
3. the vacuum welding device preventing laser welded seam from producing pore according to claim 2, is characterized in that: described welding booth (2) are surrounded by high-strength clear glass; The bottom of described preevacuated chamber (6), described welding booth (2) and described postwelding sampling room (10) is provided with workbench walking track (9).
4. the vacuum welding device preventing laser welded seam from producing pore according to claim 3, it is characterized in that: described preevacuated chamber (6), described welding booth (2) are communicated with described vavuum pump (11) respectively by pipeline (4) with described postwelding sampling room (10), described pipeline (4) is provided with by-pass valve control (16), and described vavuum pump (11) is provided with Pressure gauge (17).
5. prevent laser welded seam from producing a vacuum welding method for pore, it is characterized in that: the method adopts device according to claim 4, comprise following operating procedure:
Step 1: close the second hatch door (13), the first valve (14) and the second valve (15), starts vavuum pump (11) and carries out forvacuum to welding booth (2) and postwelding sampling room (10);
Step 2: sample to be welded (5) is put on the welding bench (7) of described preevacuated chamber (6), close the first hatch door (12), after startup vavuum pump (11) vacuumizes, open the first valve (14), welding bench (7) is moved to welding booth (2), and closes the first valve (14);
Step 3: start laser instrument (1), aims at weld seam (8) after being focused on by laser line focus head (3) and welds, and after welding, closes laser instrument (1);
Step 4: open the second valve (15), welding bench (7) is moved to postwelding sampling room (10), close the second valve (15), open the second hatch door (13), take out the sample welded, and close the second hatch door (13).
6. the vacuum welding method preventing laser welded seam from producing pore according to claim 5, it is characterized in that: in described step 2, described welding bench (7) is moved to described welding booth (2) along workbench walking track (9); In described step 4, described welding bench (7) is moved to described postwelding sampling room (10) along workbench walking track (9).
7. the vacuum welding method preventing laser welded seam from producing pore according to claim 5, it is characterized in that: described vavuum pump (11) is by Pressure gauge (17) monitoring house vacuum state, after described vavuum pump (11) quits work, the by-pass valve control (16) in closing duct (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730876.6A CN105290613B (en) | 2015-10-30 | 2015-10-30 | Vacuum welding device and method for preventing laser seam from generating pores |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730876.6A CN105290613B (en) | 2015-10-30 | 2015-10-30 | Vacuum welding device and method for preventing laser seam from generating pores |
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| Publication Number | Publication Date |
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| CN105290613A true CN105290613A (en) | 2016-02-03 |
| CN105290613B CN105290613B (en) | 2017-05-17 |
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| CN201510730876.6A Expired - Fee Related CN105290613B (en) | 2015-10-30 | 2015-10-30 | Vacuum welding device and method for preventing laser seam from generating pores |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271056A (en) * | 2016-09-12 | 2017-01-04 | 中山市镭通激光科技有限公司 | Microelectronic device packaging and welding machine |
| CN106695120A (en) * | 2016-12-23 | 2017-05-24 | 西北工业大学（张家港）智能装备技术产业化研究院有限公司 | Vacuum laser processing device |
| CN107283047A (en) * | 2017-08-07 | 2017-10-24 | 南方科技大学 | One kind prepares non-crystaline amorphous metal device, method and application using pulse laser |
| CN109014574A (en) * | 2018-08-24 | 2018-12-18 | 温州大学 | Intelligent Laser welder |
| CN109317822A (en) * | 2018-11-13 | 2019-02-12 | 北京中科恒晟科技有限公司 | Vacuum welding system |
| CN109382584A (en) * | 2017-08-04 | 2019-02-26 | 大族激光科技产业集团股份有限公司 | A kind of laser welding system and method for battery cover board |
| CN109570722A (en) * | 2018-11-21 | 2019-04-05 | 广西南宁胜祺安科技开发有限公司 | A kind of vacuum welding equipment and its application method |
| CN110411629A (en) * | 2019-07-05 | 2019-11-05 | 东莞材料基因高等理工研究院 | A kind of multi-functional welding in-situ testing device |
| CN111266747A (en) * | 2020-03-27 | 2020-06-12 | 芜湖职业技术学院 | Sealed casing for desktop level laser cutting |
| CN112108783A (en) * | 2019-06-21 | 2020-12-22 | 南京航空航天大学 | Vacuum device for double-laser-beam bilateral synchronous welding of skin-stringer T-shaped structure |
| CN113385817A (en) * | 2021-08-17 | 2021-09-14 | 国宏激光科技(江苏)有限公司 | Vacuum laser welding device |
| CN113894420A (en) * | 2021-10-27 | 2022-01-07 | 西安交通大学 | Local vacuum laser welding method for tungsten/molybdenum and alloy component thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106695120A (en) * | 2016-12-23 | 2017-05-24 | 西北工业大学（张家港）智能装备技术产业化研究院有限公司 | Vacuum laser processing device |
| CN109382584B (en) * | 2017-08-04 | 2020-09-11 | 大族激光科技产业集团股份有限公司 | Laser welding system and method for battery cover plate |
| CN109382584A (en) * | 2017-08-04 | 2019-02-26 | 大族激光科技产业集团股份有限公司 | A kind of laser welding system and method for battery cover board |
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| CN109014574A (en) * | 2018-08-24 | 2018-12-18 | 温州大学 | Intelligent Laser welder |
| CN109317822A (en) * | 2018-11-13 | 2019-02-12 | 北京中科恒晟科技有限公司 | Vacuum welding system |
| CN109570722A (en) * | 2018-11-21 | 2019-04-05 | 广西南宁胜祺安科技开发有限公司 | A kind of vacuum welding equipment and its application method |
| CN112108783A (en) * | 2019-06-21 | 2020-12-22 | 南京航空航天大学 | Vacuum device for double-laser-beam bilateral synchronous welding of skin-stringer T-shaped structure |
| CN110411629A (en) * | 2019-07-05 | 2019-11-05 | 东莞材料基因高等理工研究院 | A kind of multi-functional welding in-situ testing device |
| CN111266747A (en) * | 2020-03-27 | 2020-06-12 | 芜湖职业技术学院 | Sealed casing for desktop level laser cutting |
| CN113385817A (en) * | 2021-08-17 | 2021-09-14 | 国宏激光科技(江苏)有限公司 | Vacuum laser welding device |
| CN113385817B (en) * | 2021-08-17 | 2021-12-10 | 国宏激光科技(江苏)有限公司 | Vacuum laser welding device |
| CN113894420A (en) * | 2021-10-27 | 2022-01-07 | 西安交通大学 | Local vacuum laser welding method for tungsten/molybdenum and alloy component thereof |
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