CN106001921A - Follow-up gas protection device for thick plate ultra-narrow-gap laser welding with filler wire - Google Patents
Follow-up gas protection device for thick plate ultra-narrow-gap laser welding with filler wire Download PDFInfo
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- CN106001921A CN106001921A CN201610443515.8A CN201610443515A CN106001921A CN 106001921 A CN106001921 A CN 106001921A CN 201610443515 A CN201610443515 A CN 201610443515A CN 106001921 A CN106001921 A CN 106001921A
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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
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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
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- 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
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Laser Beam Processing (AREA)
Abstract
一种厚板超窄间隙激光填丝焊接用随动气保护装置，解决现有厚板超窄间隙激光填丝焊接气保焊装置保护效果不稳定且无法满足全自动焊接的不足，提出了一种将高度传感器和高度调节运动机构相结合的气保焊装置高度自适应性调节装置，用于厚板结构超窄间隙激光填丝焊接熔池及焊缝气保护。
A follower gas protection device for ultra-narrow gap laser wire-filled welding of thick plates, which solves the shortcomings of the existing ultra-narrow gap laser wire-filled welding gas-shielded welding devices for thick plates that have unstable protection effects and cannot meet the needs of fully automatic welding. The height adaptive adjustment device of the gas shielded welding device that combines the height sensor and the height adjustment motion mechanism is used for the ultra-narrow gap laser welding molten pool and weld gas protection of the thick plate structure.
Description
Technical field
The present invention relates to technical field of laser processing, belong to laser filling wire welding molten bath and weld metal gas shielded device, particularly relate to a kind of servo-actuated gas shielded device of slab ultra-narrow gap laser filling wire welding.
Background technology
Thick plates structure has a wide range of applications in fields such as shipbuilding, ocean engineering, nuclear power generating equipments, during for the thick plates of conventional 30mm left and right thickness, groove gap be 8mm～below 10mm be narrow gap welding, below 5mm is ultra-narrow gap welding.Ultra-narrow gap laser filling wire welding refers to that using laser is thermal source, and welding wire is a kind of ultra-narrow gap multi-layer multi-pass welding method of packing material, has the advantages such as heat input is low, welding deformation is little.Owing to groove is deep and narrow, welding gas shield welding device cannot stretch into inside groove, high to protection air-flow stiffness requirement, and requires during multi-layer multi-pass welding that gas shield welding device keeps consistent with surface of the work height, and existing common gas shield welding device cannot meet requirement.Although researcher has successively invented laterally the supply gas servo-actuated guard method of weld seam with air-breathing and the narrow gap welding gas shield welding device of device (CN201410608433) and scalable spray nozzle device (CN201310501123.9) both at home and abroad, but all there is respective limitation: laterally supply gas and the weld seam follow-up protector (CN201410608433) of air-breathing is combined by side blowing and inspiratory phase, although weld fumes can be moved apart weld groove, and suppress the plasma shielding action to laser, but it is easily caused welding region protective gas and produces turbulent flow, affect weld seam protection effect, and device is complicated, means are needed to regulate, it is difficult to popularization and application in industry actual production；Scalable spray nozzle device (CN201310501123.9) is although can be adjusted protection gas jets casing length, but effectively range of accommodation is limited, need to manually regulate.
The multichannel laterally mode of supplying gas is used to suppress laser metal steam plumage and protect welding pool and high temperature welded seam area; and the height adaptive control of circulation of qi promoting guarantor's welder it is incorporated into by height sensor, servo motor and Programmable Logic Controller; the demand of slab ultra-narrow gap laser filling wire welding gas shield welding servo-actuated to automatization device can be met, currently there is not yet relevant report.
Summary of the invention
It is an object of the invention to as heavy wall component full-automatic ultra-narrow gap laser filling wire welding equipment self adaptation altitude mixture control gas shield welding device; solve existing slab ultra-narrow gap laser filling wire welding gas shield welding unit protection effect instability and the deficiency of Full-automatic welding cannot be met; propose a kind of gas shield welding device height adaptive adjusting means height sensor and altitude mixture control motion combined, for thick plate structure ultra-narrow gap laser filling wire welding molten bath and weld seam gas shielded.
For realizing above-mentioned technical purpose, be the technical scheme is that a kind of servo-actuated gas shielded device of slab ultra-narrow gap laser filling wire welding, it is provided with and is arranged on the gas shielded above welded piece and drags cover, gas shielded drags and connects the altitude mixture control motion having regulation gas shielded to drag cover and the spacing of welded piece upper surface on cover, the Programmable Logic Controller having control altitude mixture control motion to move height is connected on altitude mixture control motion, the height sensor having monitoring gas shielded to drag cover and the spacing of welded piece upper surface is connected on Programmable Logic Controller, height sensor is arranged on gas shielded and drags on cover.
Altitude mixture control motion of the present invention includes that servomotor, servomotor are connected with Programmable Logic Controller.
Gas shielded of the present invention drags cover to include main protection gas interface, secondary protection gas interface, air-flow calmness sieve (multiple layer of copper silk screen), main protection gas flow tube and secondary protection gas flow tube; main protection air-flow is blown into welded piece welding region through main protection gas interface, air-flow calmness sieve and main protection gas flow tube, and the flow of main protection air-flow is 20 L/min～50L/min；Secondary protection air-flow protects gas interface, air-flow calmness sieve and secondary protection gas flow tube to be blown into welded piece groove through pair, and the flow of secondary protection air-flow is 15 L/min～40L/min.
The flow of main protection air-flow of the present invention is more than the flow of pair protection air-flow.
Main protection air-flow of the present invention and secondary protection air-flow tilt to blow to welded piece.
Main protection air-flow of the present invention is identical with the angle of inclination of secondary protection air-flow.
Main protection air-flow of the present invention and secondary protection air-flow tilt to welding direction.
The sensitive surface of height sensor of the present invention drags the air blowing face of cover concordant with gas shielded.
Gas shielded of the present invention drags the air blowing face of cover concordant with the upper surface of welded piece.
The present invention is when welding, and described gas shielded drags the distance between the air blowing face of cover and the upper surface of welded piece to be 3mm-10mm.
The invention has the beneficial effects as follows:
1, use height sensor to monitor gas shielded in real time and drag the distance between cover and welded piece upper surface; realize the height adaptive of gas shielded device during slab ultra-narrow gap welding is regulated by servo motor and Programmable Logic Controller; instead of the means regulative mode of existing multi-pass welding interlayer gas shielded device, improve welding production efficiency and welding process stability.
2, protection gas can effectively reduce turbulent flow through air-flow calmness sieve and air-flow copper pipe in short distance, improves protection air-flow deflection, can realize the effective protection to molten bath；Gas shielded drags cover to use major and minor protection airflow design scheme, and main protection air-flow is for suppressing the metal vapors plumage at laser aperture and protection welding pool, and secondary protection air-flow is used for protecting overheated weld metal, improves welding protection effect.
3, main protection air-flow and secondary protection air-flow tilt to blow to welded piece welding region, and this kind of air-flow is internally formed laminar flow at welded piece groove, further increases protected effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation that gas shielded of the present invention drags cover；
Fig. 3 be Fig. 2 look up structural representation；
Fig. 4 is the structural representation of altitude mixture control motion of the present invention；
Fig. 5 is altitude mixture control motion type of drive schematic diagram of the present invention；
In figure: 1 is welded piece；2 is filler pass；3 is laser beam；4 is ignition tip；5 is filler wire；6 is flange；7 drag cover for gas shielded；701 is air blowing face；8 is electronic controlled height adjustment；9 is height regulating rod；10 is servo motor；11 is height sensor；12 is sensor cable；13 is Programmable Logic Controller；14 is external control cable；15 control cable for servo motor；16 is main protection gas interface；17 is secondary protection gas interface；18 sieve for air-flow calmness；19 is main protection gas flow tube；20 is main protection air-flow；21 is secondary protection gas flow tube；22 is secondary protection air-flow, and 23 is height adjuster pedestal；24 is slide rail bearing；25 is connecting bolt；26, altitude mixture control motion.
Detailed description of the invention
BROAD SUMMARY:
(1) a kind of slab ultra-narrow gap laser filling wire welding is with servo-actuated gas shielded device (as shown in Figure 1); monitoring gas shielded by height sensor 11 and drag the distance between cover 7 and welded piece 1 upper surface, Monitoring Data inputs Programmable Logic Controller 13 by sensor cable 12；Programmable Logic Controller 13 controls servo motor 10 and drives gas shielded to drag cover to move up and down, it is achieved gas shielded drags the height adaptive of cover regulate.
(2) this device is made up of components described below: flange 6, gas shielded drag cover 7, electronic controlled height adjustment 8, height regulating rod 9, servo motor 10, height sensor 11, sensor cable 12, Programmable Logic Controller 13, external control cable 14 and servo motor to control cable 15.Flange 6 is connected with welding gun or other external device (ED) for gas shielded device；Gas shielded drags the altitude mixture control motion 26 of cover to be made up of electronic controlled height adjustment 8, height regulating rod 9 and servo motor 10, and electronic controlled height adjustment 8 is motionless, and height regulating rod 9 drives gas shielded to drag cover 7 to move；Gas shielded drags cover 7 to be bolted with height regulating rod 9, and air blowing face 701 is parallel with workpiece to be welded；Height sensor 11 is bolted on gas shielded and drags the both sides of cover 7, air blowing face 701 to flush with the sensitive surface of height sensor 11, it is ensured that pin-point accuracy during sensing.
(3) Programmable Logic Controller 13 is connected respectively at height sensor 11, external control system and servo motor 10 by sensor cable 12, external control cable 14 and servo motor control cable 15.Wherein external control system (such as robot) controls startup and the closedown of Programmable Logic Controller 13 by outside electric control cable 14: when welding process starts, open Programmable Logic Controller 13, it is achieved gas shielded drags the Automatic adjusument of cover height；After welding process terminates, closing Programmable Logic Controller 13, gas shielded drags cover to return initial position (highly highest point).
(4) connection of height regulating rod 9 and electronic controlled height adjustment 8 is as shown in Figure 4.Wherein electronic controlled height adjustment 8 is consisted of connecting bolt 25 connection height adjuster pedestal 23, slide rail bearing 24.On the sheathed height regulating rod of height adjuster seat 23 9, the end face not being fastened on height regulating rod 9 is fixed on height adjuster pedestal 23 by slide rail bearing 24 by connecting bolt 25, height regulating rod 9 and slide rail bearing 24 are typical linear guide rail structure, the cross section of height regulating rod 9 is I shape, the slide rail bearing 24 matched with it is fastened on height regulating rod 9, can slide up and down along height regulating rod 9.
The connection of height regulating rod 9 and servo motor 10 is as it is shown in figure 5, be gear & rack structure.Servo motor 10 rotarily drives height regulating rod 9 slide rail bearing 24 along electronic controlled height adjustment 8 and moves up and down, thus realizes altitude mixture control.
(5) when height sensor 11 monitor value is more than zero position value, Programmable Logic Controller 13 drives servo motor 10 to drive height regulating rod 9 to move downward along electronic controlled height adjustment 8, until monitor value is equal with zero position value；Otherwise, when height sensor 11 monitor value is less than zero position value, Programmable Logic Controller 13 drives servo motor 10 to drive height regulating rod 9 to move upward along electronic controlled height adjustment 8, until monitor value is equal with zero position value.
(6) gas shielded drags cover 7 height adjustment range to be 0mm～110mm, degree of regulation 0.5mm, response time 0.1s；The response time of Programmable Logic Controller 13 is 0.1s；Certainty of measurement 0.1mm of height sensor；Gas shielded drags cover 7 to be 3mm～10mm with the distance of welded piece 1 upper surface.
(7) gas shielded drags cover structure as shown in Figure 2: dragging cover front portion is main protection air-flow, is used for suppressing metal vapors plumage and protection molten bath；Rear portion is secondary protection air-flow, is used for protecting weld seam；Main protection air-flow is blown into welded piece welding region through main protection gas interface 16, air-flow calmness sieve 18 and main protection gas flow tube 19, and flow is 30 L/min～50L/min；Secondary protection air-flow protects gas interface 17, air-flow calmness sieve 18 and secondary protection gas flow tube 21 to be blown into welded piece groove through pair, and flow is 20 L/min～40L/min, and main protection gas flow tube 19 and secondary protection gas flow tube 21 are copper pipe.
(8) gas shielded drags the major and minor air-flow of cover to blow to welded piece upper surface with the form tilted; its angle tilted is identical; and tilt (as shown in Figure 2) to welding direction simultaneously; air-flow is 30-80 ° with the angle of welded piece upper surface; the form tilted is used to carry out gas shielded; the flow of major and minor air-flow can be strengthened, even if flow is big, also will not produce turbulent flow.
Using gas shield welding device of the present invention to carry out the narrow gap laser light filler wire welding of high-strength steel slab, capital equipment is robotic laser's filler wire welding system and gas shield welding device of the present invention.Detailed description of the invention is as follows:
(1) gas shielded drags cover initial position and zero position: when height adaptive adjusting means is closed, and gas shield welding drags cover to be in initial position, i.e. gas shield welding drags the extreme higher position of cover；Gas shielded drags the zero-bit dragging cover at cover and welded piece upper surface distance 5mm for gas shielded.
(2) backing run welding: robot runs pause motion to backing run starting the arc position, takes motor by external control cable to private and sends unlatching signal, height adaptive adjusting means proceeds by gas shielded and drags the monitoring of cover height and Automatic adjusument.Gas shield welding drag cover on private take to move downwardly to along electronic controlled height adjustment under the driving of motor away from welded piece upper surface 5mm(, value is set) place, Programmable Logic Controller starts welding to robot feedback signal, robot.After backing run receives arc, robot pause motion, send shutdown signal by external control cable to Programmable Logic Controller, Programmable Logic Controller drives servo motor that gas shielded drags cover move to initial position along height regulating rod and lock.
(3) filler pass welding: robot runs pause motion to filler pass starting the arc position, takes motor by external control cable to private and sends unlatching signal, height adaptive adjusting means proceeds by gas shielded and drags the monitoring of cover height and Automatic adjusument.When concrete regulation process is welded with backing run, gas shield welding drags cover altitude mixture control identical.
Claims (10)
1. a slab ultra-narrow gap laser filling wire welding is with servo-actuated gas shielded device, be provided be arranged on welded piece (1) top gas shielded drag cover (7), it is characterized in that: gas shielded drags the upper connection of cover (7) to have regulation gas shielded to drag the altitude mixture control motion (26) of cover (7) and the spacing of welded piece (1) upper surface, the upper connection of altitude mixture control motion (26) has the Programmable Logic Controller (13) controlling the mobile height of altitude mixture control motion (26), the upper connection of Programmable Logic Controller (13) has monitoring gas shielded to drag the height sensor (11) of cover (7) and the spacing of welded piece (1) upper surface, height sensor (11) is arranged on gas shielded and drags on cover (7).
2. slab ultra-narrow gap laser filling wire welding as claimed in claim 1 a kind of is with servo-actuated gas shielded device; it is characterized in that: described altitude mixture control motion (26) includes that servomotor (10), servomotor (10) are connected with Programmable Logic Controller (13).
3. slab ultra-narrow gap laser filling wire welding as claimed in claim 1 a kind of is with servo-actuated gas shielded device; it is characterized in that: described gas shielded drags cover (7) to include main protection gas interface (16), secondary protection gas interface (17), air-flow calmness sieve (18), main protection gas flow tube (19) and secondary protection gas flow tube (21); main protection air-flow (20) is blown into welded piece welding region through main protection gas interface (16), air-flow calmness sieve (18) and main protection gas flow tube (19), and the flow of main protection air-flow (20) is 20 L/min～50L/min；Secondary protection air-flow (22) is blown into welded piece groove through pair protection gas interface (17), air-flow calmness sieve (18) and secondary protection gas flow tube (21), and the flow of secondary protection air-flow (22) is 15 L/min～40L/min.
4. slab ultra-narrow gap laser filling wire welding as claimed in claim 3 a kind of is with servo-actuated gas shielded device, it is characterised in that: the flow of described main protection air-flow (20) is more than the secondary flow protecting air-flow (22).
5. slab ultra-narrow gap laser filling wire welding as claimed in claim 3 a kind of is with servo-actuated gas shielded device, it is characterised in that: described main protection air-flow (20) and secondary protect air-flow (22) inclination to blow to welded piece (1).
6. slab ultra-narrow gap laser filling wire welding as claimed in claim 5 a kind of is with servo-actuated gas shielded device, it is characterised in that: described main protection air-flow (20) and pair protect the angle of inclination of air-flow (22) identical.
7. slab ultra-narrow gap laser filling wire welding as claimed in claim 5 a kind of is with servo-actuated gas shielded device, it is characterised in that: described main protection air-flow (20) and secondary protect air-flow (22) to welding direction inclination.
8. slab ultra-narrow gap laser filling wire welding as claimed in claim 1 a kind of is with servo-actuated gas shielded device, it is characterised in that: the sensitive surface of described height sensor (11) drags the air blowing face (701) of cover (7) concordant with gas shielded.
9. slab ultra-narrow gap laser filling wire welding as claimed in claim 1 a kind of is with servo-actuated gas shielded device, it is characterised in that: described gas shielded drags the air blowing face (701) of cover (7) concordant with the upper surface of welded piece (1).
10. slab ultra-narrow gap laser filling wire welding as claimed in claim 1 a kind of is with servo-actuated gas shielded device; it is characterized in that: when welding, described gas shielded drags the distance between the air blowing face (701) of cover (7) and the upper surface of welded piece (1) to be 3mm-10mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610443515.8A CN106001921A (en) | 2016-06-21 | 2016-06-21 | Follow-up gas protection device for thick plate ultra-narrow-gap laser welding with filler wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610443515.8A CN106001921A (en) | 2016-06-21 | 2016-06-21 | Follow-up gas protection device for thick plate ultra-narrow-gap laser welding with filler wire |
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| CN201610443515.8A Pending CN106001921A (en) | 2016-06-21 | 2016-06-21 | Follow-up gas protection device for thick plate ultra-narrow-gap laser welding with filler wire |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106553012A (en) * | 2016-12-06 | 2017-04-05 | 南京宝色股份公司 | Protective drag cover and welding method for titanium alloy laser-MIG hybrid welding after welding |
| CN106735897A (en) * | 2016-12-28 | 2017-05-31 | 西南交通大学 | The device and method of simulation slab narrow gap laser filling wire welding and real-time monitoring |
| CN107755882A (en) * | 2017-10-17 | 2018-03-06 | 西安飞机工业（集团）有限责任公司 | A kind of large titanium alloy component laser gain material connection method |
| CN108515264A (en) * | 2018-03-30 | 2018-09-11 | 北京石油化工学院 | A method of for improving ultra-narrow gap laser welding efficiency |
| CN108581207A (en) * | 2018-07-03 | 2018-09-28 | 哈尔滨工业大学（威海） | A kind of the chevilled silk spacing real-time adaptive regulating system and adjusting method of laser-arc hybrid welding in industry |
| CN112108765A (en) * | 2020-08-25 | 2020-12-22 | 中国船舶重工集团公司第七二五研究所 | Titanium alloy narrow gap laser welding wire feeding and gas protection integrated mechanism |
| CN112108655A (en) * | 2020-08-19 | 2020-12-22 | 中国船舶重工集团公司第七二五研究所 | Titanium alloy thick plate narrow gap laser melting connection method based on pre-laid powder |
| CN112975122A (en) * | 2021-03-04 | 2021-06-18 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
| CN113996898A (en) * | 2021-11-11 | 2022-02-01 | 广东省科学院中乌焊接研究所 | Welding shielding gas hood and welding system |
| CN119839487A (en) * | 2025-03-24 | 2025-04-18 | 浙江工业大学 | Self-adaptive defect regulation and control device for collapse of electromagnetic field auxiliary laser-electric arc composite welding |
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| CN112108655A (en) * | 2020-08-19 | 2020-12-22 | 中国船舶重工集团公司第七二五研究所 | Titanium alloy thick plate narrow gap laser melting connection method based on pre-laid powder |
| CN112108655B (en) * | 2020-08-19 | 2022-07-08 | 中国船舶重工集团公司第七二五研究所 | A narrow gap laser fusion joining method for titanium alloy thick plates based on pre-powder |
| CN112108765A (en) * | 2020-08-25 | 2020-12-22 | 中国船舶重工集团公司第七二五研究所 | Titanium alloy narrow gap laser welding wire feeding and gas protection integrated mechanism |
| CN112975122A (en) * | 2021-03-04 | 2021-06-18 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
| US20220281031A1 (en) * | 2021-03-04 | 2022-09-08 | Nanchang Hangkong University | Welding gas shielding device, laser filler wire welding system and welding method |
| CN112975122B (en) * | 2021-03-04 | 2023-03-24 | 南昌航空大学 | Welding gas protection device, laser wire filling welding system and welding method |
| CN113996898A (en) * | 2021-11-11 | 2022-02-01 | 广东省科学院中乌焊接研究所 | Welding shielding gas hood and welding system |
| CN119839487A (en) * | 2025-03-24 | 2025-04-18 | 浙江工业大学 | Self-adaptive defect regulation and control device for collapse of electromagnetic field auxiliary laser-electric arc composite welding |
| CN119839487B (en) * | 2025-03-24 | 2025-07-15 | 浙江工业大学 | An electromagnetic field assisted laser-arc hybrid welding collapse defect adaptive control device |
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Application publication date: 20161012 |