CN107971634A - Method and system for laser-stirring composite deep fusion welding of thick plate - Google Patents
Method and system for laser-stirring composite deep fusion welding of thick plate Download PDFInfo
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- CN107971634A CN107971634A CN201711443958.8A CN201711443958A CN107971634A CN 107971634 A CN107971634 A CN 107971634A CN 201711443958 A CN201711443958 A CN 201711443958A CN 107971634 A CN107971634 A CN 107971634A
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- 238000003466 welding Methods 0.000 title claims abstract description 174
- 238000003756 stirring Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 230000004927 fusion Effects 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 claims description 25
- 230000035515 penetration Effects 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 22
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000002905 metal composite material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
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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 discloses a method for welding thick plates by laser-stirring composite deep melting, which comprises the following steps: step 1, providing a first workpiece and a second workpiece; step 2, accurately butting and clamping the first workpiece and the second workpiece; step 3, providing a laser-stirring composite welding system, wherein the laser welding head and the stirring pin are arranged in a front-back row along the welding direction; step 4, starting the laser-stirring composite welding system, wherein the laser beam vertically irradiates the upper surface of the workpiece, and the sizes of the focused laser spots of the laser beam are evenly distributed on the first workpiece and the second workpiece; and 5, when the temperature acquired by the temperature sensor reaches or exceeds the temperature value for melting the workpiece, screwing the stirring pin downwards into the welding pool, and synchronously moving the stirring pin and the laser beam to finish the welding process. The invention also relates to a laser-stirring composite deep fusion welding thick plate system. Compared with the prior art, the invention has the advantages of good welding effect, simple process and easy realization of automation.
Description
Technical field
The present invention relates to a kind of laser welding field, more particularly to a kind of side of the compound penetration fustion welding slab of laser-stirring
Method and system.
Background technology
Laser welding is one of most widely used advanced technologies in laser processing technology, have thermal weld stress it is small, weldering
Depth-to-width ratio is big for seam, speed is fast, seam deformation low residual stress is low, welding precision and intensity are high, without filler, be easily achieved it is automatic
Outstanding advantages of change, be applied in the important industry field of the national economy such as automobile, shipbuilding, nuclear power, pipeline.
With succeeding in developing for recent ultra high power high brightness laser so that being become using laser single track welding slab can
Energy.Laser Deep Penetration Welding is similar to electron beam welding, and there are keyhole effect, weld keyhole is constantly elapsed along welding direction, melts
The molten metal for changing forward position flows downward along aperture antetheca, and is flowed backward around small holes, so as to obtain the weldering of big depth-to-width ratio
Seam.But laser, from the big thickness downhand welding connector of fusion welding, welding condition scope is extremely narrow, easily formed collapse with bottom overlap,
The problem of i.e. so-called " then leaking thoroughly "！Its basic reason is the aperture self-energy coupling of aperture inner wall gauffer/step induction
The molten metal flow at high speed of local evaporation steam kickback pressure driving caused by uneven.“PA position full
penetration high power laserbeam welding of up to 30 mm thick AlMg3plates
Using electromagnetic weld poolsupport ", science and technology of welding and
Joining 2012 (17),（" 30 mm thickness AlMg3 of weld horizontal position is penetrated using electromagnetism molten bath auxiliary system high power laser light
Plate ",《Welding is with being connected science and technology》2012（17））The article pointed out and electromagnetic field is set below downhand welding slab test specimen, produce to
On Lorentz force overcome gravity, and then suppress to fall under the molten bath under gravity.But molten bath gravity molten bath is collapsed and
Under fall a simply minor impact factor.
Disclosed in 13 days June in 2012, Publication No. " CN102489830A ", entitled " large tank single side
The patent of invention of welding double-faced forming method and appearance of weld pad " discloses a kind of large tank pad soldering method and pad,
The problem of which solving large tank single-side welding double-side forming, but the technical solution is still there are problems with, in order to obtain
Obtain and preferably shape, it is necessary to start sufficiently large appearance of weld groove on pad, so that bottom welding seam is very wide.
Disclosed in 8 days July in 2015, Publication No. " 103418917 B of CN ", entitled " a kind of laser is with melting
Melt the method for metal composite welded blank " patent of invention disclose the side of laser and molten metal composite welding plate a kind of
Method, which solve laser welding slab downhand welding connector Welding bead subsidence and under the problem of falling, but the technical solution still exist with
The technological measure that molten metal is synchronously sprayed in weld seam bottom that lower problem, this method propose so that the knot of whole welder
Structure and control become complicated, and the equipment debugging time is longer before weldering.
The content of the invention
The present invention welds slab thoroughly for high power laser light from burn through（>16 mm）In downhand welding connector forming process, easily occur
The problems such as collapsing with bottom overlap, there is provided a kind of method and system of the compound penetration fustion welding slab of laser-stirring, has well
Welding effect, and technique is simple, easy to automate.
The present invention provides a kind of method and system of the compound penetration fustion welding slab of laser-stirring, includes the following steps.
Step 1, provide the first workpiece and second workpiece for needing to weld, and the first workpiece and second workpiece are stainless steel
Plate.
Step 2, accurately docking and clamp the first workpiece and second workpiece.
Step 3, provide laser-stirring composite welding system, laser-stirring composite welding system have laser welding head,
Mixing needle, laser welding head, mixing needle are along arranged in rows before and after welding direction.
Step 4, start laser-stirring composite welding system, laser beam vertical radiation workpiece surface, laser beam focus light
Spot size is evenly distributed on the first workpiece and second workpiece.
Step 5, gather back of work temperature by temperature sensor in real time, when the temperature collected meets or exceeds workpiece
During the temperature value of fusing, start electric rotating machine driving mixing needle rotation, linear motor driving mixing needle moves down, mixing needle rotation
Enter welding pool, mixing needle and laser beam synchronizing moving, continue welding.
Step 6, reach welding distal point when, close laser generator, linear motor driving mixing needle move up, close
Motor, completes welding process.
In a wherein embodiment, in step 3, laser-stirring composite welding system further includes to be moved down on driving mixing needle
Dynamic linear motor, linear motor are fixed on laser welding head.
In a wherein embodiment, in step 3, laser-stirring composite welding system further includes driving mixing needle rotation fortune
Dynamic electric rotating machine, electric rotating machine are fixed on linear motor with mixing needle by connecting plate.
In a wherein embodiment, in step 3, laser-stirring composite welding system further includes corresponding with laser welding head
The protection gas jets of setting, the region of protective gas nozzle alignment laser welding head welding, and protect gas jets, laser welding head
It is fixed together.
In a wherein embodiment, in step 3, laser-stirring composite welding system, which further includes, to be placed under welding starting point
The temperature sensor of side, for gathering back of work temperature in real time.
In a wherein embodiment, in step 3, mixing needle is in cylindrical structure, and surface is recessed equipped with V-arrangement Archimedian screw
Slot structure and circular annular form groove structure.
In a wherein embodiment, laser can be accelerated from fusion welding area aperture antetheca by circular annular form groove structure
Molten metal flows backward around small holes, and by V-arrangement Archimedian screw groove structure can laser from fusion welding area
The molten metal of molten bath bottom is flowed up along V-arrangement Archimedian screw groove.
In a wherein embodiment, mixing needle diameter D is 2~6 mm.
In a wherein embodiment, stirring wire surface V-arrangement Archimedian screw groove structure pitch p is 2~5 mm.
In a wherein embodiment, wire surface V-arrangement Archimedian screw groove structure and circular annular form groove structure are stirred
Section depth h be 0.5~3 mm.In a wherein embodiment, in step 3, laser welding head focuses on the laser beam to be formed
Distance δ is 3 ~ 7mm between center line and stirring needle axis.
In a wherein embodiment, in step 3, laser-stirring composite welding system is further included and is connected with temperature sensor
Temperature acquisition system, the processing system that is connected with temperature acquisition system and manipulator control system, in step 5, temperature sensing
After device collects back of work temperature in real time, temperature acquisition system is transmitted a signal to, temperature acquisition system is by temperature sensor
The picture signal of acquisition is converted into video electrical signal, and is transferred to processing system, and whether processing system judges back of work temperature
The temperature value of workpiece fusing is met or exceeded, when temperature meets or exceeds the temperature value of workpiece fusing, processing system is to machinery
Hand control system sends the signal for starting electric rotating machine and linear motor, manipulator control system control electric rotating machine driving stirring
Pin rotates, and control linear motor driving mixing needle moves down, and mixing needle screws in welding pool, and mixing needle is synchronous with laser beam to be moved
It is dynamic.
In a wherein embodiment, processing system includes being used to judge whether back of work temperature meets or exceeds workpiece and melt
The processing module of the temperature value of change, the image pick-up card of connection temperature sensor and processing module, connection processing module and machinery
The I/O units of hand control system, in step 5, vision signal is converted into digital signal and is sent to processing module by image pick-up card,
When processing module judges that temperature meets or exceeds the temperature value of workpiece fusing, processing module is manual to machinery by I/O units
System processed sends the signal for starting electric rotating machine and linear motor.
In a wherein embodiment, in step 4, screw in molten bath mixing needle it is most advanced with the distance d of workpiece lower surface be 1
~3 mm.
The present invention also provides a kind of compound penetration fustion welding slab system of laser-stirring, including laser generator is through transmission light
Fibre is connected to the laser welding head for being installed on welding manipulator, and linear motor is fixed on laser welding head, and electric rotating machine passes through
Shaft coupling is connected with mixing needle, then is fixed on by connecting plate on linear motor, and laser welding head, mixing needle are along before welding direction
It is arranged in rows afterwards；Protection gas jets are fixed on laser welding head, the region of alignment laser welding head welding, and temperature sensor is solid
Fixation is connected, for gathering back of work temperature in real time in workpiece bottom part down with computer；The compound deep penetration welding of laser-stirring
Connect slab system and further include manipulator control system, manipulator control system can control linear motor and electric rotating machine so that stir
Mix pin to move up and down and rotate, mixing needle is connected with protective gas jet pipe with laser welding head.
In a wherein embodiment, the temperature acquisition system and temperature acquisition system being connected with temperature sensor are further included
And the processing system that manipulator control system is connected, after temperature sensor collects back of work temperature in real time, by signal transmission
To temperature acquisition system, the picture signal that temperature sensor obtains is converted into video electrical signal by temperature acquisition system, and is transmitted
To processing system, processing system judges whether back of work temperature meets or exceeds the temperature value of workpiece fusing, when temperature reaches
Or more than workpiece fusing temperature value when, processing system sends the signal for starting electric rotating machine and linear motor to control system,
Manipulator control system can control linear motor and electric rotating machine so that mixing needle is moved up and down and rotated.
The beneficial effects of the invention are as follows.
1）The present invention is set in aperture rear wall rear molten bath of the laser from fusion welding has circular annular form groove structure and V
The mixing needle of shape Archimedian screw groove structure, high-speed rotating mixing needle cause laser from the molten of fusion welding area aperture antetheca
Melt metal to accelerate to flow backward around small holes, aperture antetheca molten metal layer thickness is thinning, greatly reduces the wrinkle of aperture antetheca
Pleat/step, effectively prevent the bottom melting that the molten metal of aperture antetheca local evaporation driving flows downward and produces at a high speed
Metal collection, so weld seam bottom formed bottom overlap the problem of.
2）The present invention is set in aperture rear wall rear molten bath of the laser from fusion welding has circular annular form groove structure and V
The mixing needle of shape Archimedian screw groove structure, high-speed rotating mixing needle cause laser from the molten of fusion welding area molten bath bottom
Melt metal to flow up along V-arrangement Archimedian screw groove, significantly enhance laser and melted from fusion welding area aperture rear wall rear
The upward flowing of bottom of pond portion molten metal, effectively prevent laser and is formed from molten metal in fusion welding molten bath in congregate
The problem of bottom overlap.
3）The method and system of the compound penetration fustion welding slab of laser-stirring provided by the invention, can promote the use of thickness
It is adaptable during plate horizontal position welding, vertical position welding and all-position welding etc..
Brief description of the drawings
Fig. 1 is the equipment involved by a kind of compound penetration fustion welding slab method and system of laser-stirring of the embodiment of the present invention
Schematic diagram is arranged with mother metal.
Fig. 2 is welding section Longitudinal cross section schematic in method shown in Fig. 1.
Fig. 3 is Laser Deep Penetration Welding area Longitudinal cross section schematic when bottom overlap is formed.
Fig. 4 is seam cross-section shaping schematic view in state shown in Fig. 2.
Fig. 5 is seam cross-section shaping schematic view in state shown in Fig. 3.
Fig. 6 is welding method shown in Fig. 1 and mixing needle structure diagram in system.
Fig. 7 is the spiral groove structured partial schematic diagram of V-arrangement of mixing needle shown in Fig. 6.
Fig. 8 is the circular annular form groove structure partial schematic diagram of mixing needle shown in Fig. 6.
Wherein：1-the first workpiece；2-second workpiece；3-laser beam；4-protection gas jets；5-welding manipulator.
6-fixing bracket；7-laser welding head；8-linear motor；9-electric rotating machine；10-shaft coupling.
11-connecting plate.
12-stirring needle system.
121-V-arrangement Archimedian screw groove, 122-circular annular form groove.
13-Transmission Fibers；14-laser generator；15-temperature sensor；16-computer；17-aperture antetheca；
18-aperture；19-aperture rear wall；20-welding pool；The weld seam of 21-solidification；22-welding section molten metal flowing direction.
Embodiment
Technical scheme is described in detail below with reference to attached drawing 1-8 and specific embodiment.
As shown in figures 1-8, an embodiment of the present invention provides a kind of compound penetration fustion welding slab method of laser-stirring to be included such as
Lower step.
Step 1, provide the first workpiece 1 and second workpiece 2 for needing to weld, and the first workpiece 1 and second workpiece 2 are stainless
Steel plate.
Step 2, accurately docking and clamp the first workpiece 1 and second workpiece 2.
Step 3, provide laser-stirring composite welding system, laser-stirring composite welding system have laser welding head 7,
Mixing needle 12, laser welding head 7, mixing needle 12 are along arranged in rows before and after welding direction.
Mixing needle 12 is in cylindrical structure, and surface is equipped with V-arrangement Archimedian screw groove structure 121 and circular annular form groove
Structure 122.
Optionally, melting of the laser from fusion welding area aperture antetheca 17 can be accelerated by circular annular form groove structure 122
Metal flows backward around small holes 18, and by V-arrangement Archimedian screw groove structure 121 can laser from fusion welding area
The molten metal of molten bath bottom is flowed up along V-arrangement Archimedian screw groove 121.
Optionally, 12 diameter D of mixing needle is 2~6 mm.
Optionally, 12 surface V-arrangement Archimedian screw groove structure of mixing needle, 121 pitch p is 2~5 mm.
Optionally, 12 surface V-arrangement Archimedian screw groove structure 121 of mixing needle and circular annular form groove structure 122
Section depth h1、h2It is 3 center line of laser beam and 12 axis of mixing needle that 0.5~3 mm and laser welding head 7 focus on formation
Between distance δ be 3~7 mm.
Laser-stirring composite welding system further include driving mixing needle rotary motion electric rotating machine 9, electric rotating machine 9 with
Mixing needle 12 is fixed on linear motor 8 by connecting plate 11；Then the protection gas blowout being correspondingly arranged with laser welding head 7 is included
Mouth 4, protective gas nozzle 4 is directed at the region that laser welding head 7 welds, and protects gas jets 4, laser welding head 7 to be fixed on one
Rise；The temperature sensor 15 for being additionally useful for collection back of work temperature in real time is placed in the lower section of welding starting point；In addition, also
Including the temperature acquisition system being connected with temperature sensor 15, the processing being connected with temperature acquisition system and manipulator control system
System.
Step 4, start laser-stirring composite welding system, 3 vertical radiation workpiece surface of laser beam, and laser beam 3 focuses on
Spot size is evenly distributed on the first workpiece 1 and second workpiece 2.
Optionally, screw in molten bath mixing needle 12 it is most advanced with the distance d of workpiece lower surface be 1~3 mm.
Step 5, by temperature sensor 15 gather back of work temperature in real time, when the temperature collected meets or exceeds work
During the temperature value of part fusing, starting electric rotating machine 9 and drive mixing needle 12 to rotate, linear motor 8 drives mixing needle 12 to move down,
Mixing needle 12 screws in welding pool 21, mixing needle 12 and 3 synchronizing moving of laser beam, continues welding.
After temperature sensor 15 collects back of work temperature in real time, temperature acquisition system is transmitted a signal to, temperature is adopted
The picture signal that temperature sensor 15 obtains is converted into video electrical signal by collecting system, and is transferred to processing system, processing system
Including for judging whether back of work temperature meets or exceeds the processing module of the temperature value of workpiece fusing, connection temperature sensing
The I/O units of the device 15 and image pick-up card of processing module, connection processing module and manipulator control system.Scheme in this example
Processing module is sent to as vision signal is converted into digital signal by capture card, when processing module judges that temperature meets or exceeds work
During the temperature value of part fusing, processing module is sent by I/O units to manipulator control system starts electric rotating machine 9 and straight-line electric
The signal of machine 8.
Step 6, when reaching welding distal point, close laser generator 14, linear motor 8 drives mixing needle 12 to moving up
It is dynamic, electric rotating machine 9 and linear motor 8 are closed, completes welding process.
The present invention also provides a kind of compound penetration fustion welding slab system of laser-stirring, including laser generator 14 is through transmission
Optical fiber 13 is connected to the laser welding head 7 for being installed on welding manipulator 5, and linear motor 8 is fixed on laser welding head 7, rotation
Motor 9 is connected by shaft coupling 10 with mixing needle 12, then is fixed on by connecting plate 11 on linear motor 8, laser welding head 7,
Mixing needle 12 is along arranged in rows before and after welding direction；Protection gas jets 4 are fixed on laser welding head 7, are directed at laser welding head 7
The region of welding, temperature sensor 15 are fixed and are placed in workpiece bottom part down, be connected with computer 16, for gathering the workpiece back of the body in real time
Face temperature；The compound penetration fustion welding slab system of laser-stirring further includes manipulator control system, and laser welding head 7 is fixed on weldering
On welding manipulator 5, manipulator control system can control linear motor 8 and electric rotating machine 9 to move up and down and rotate respectively, mixing needle
12 are connected with protective gas jet pipe 4 with laser welding head 7.
In a wherein embodiment, the temperature acquisition system being connected with temperature sensor 15 and temperature acquisition system are further included
The processing system that system and manipulator control system are connected, after temperature sensor 15 collects back of work temperature in real time, by signal
Temperature acquisition system is transferred to, the picture signal that temperature sensor 15 obtains is converted into video electrical signal by temperature acquisition system,
And processing system is transferred to, processing system judges whether back of work temperature meets or exceeds the temperature value of workpiece fusing, works as temperature
When degree meets or exceeds the temperature value of workpiece fusing, processing system sends the signal for starting motor 8, manipulator 5 to control system
Control system can control linear motor 8 and electric rotating machine 9 so that mixing needle 12 is moved up and down and rotated.
The present invention is set in 19 rear molten bath of aperture rear wall of the laser from fusion welding has circular annular form groove structure 122
With the mixing needle of V-arrangement Archimedian screw groove structure 121, high-speed rotating mixing needle causes laser from before fusion welding area aperture
The molten metal of wall 17 accelerates to flow backward around small holes 18, and 17 molten metal layer thickness of aperture antetheca is thinning, greatly reduces
Gauffer/step of aperture antetheca 17, the molten metal that effectively prevent the driving of 17 local evaporation of aperture antetheca flow downward at a high speed
And produce bottom molten metal collect, and then weld seam bottom formed bottom overlap the problem of.
The present invention is set in 19 rear molten bath of aperture rear wall of the laser from fusion welding has circular annular form groove structure 122
With the mixing needle of V-arrangement Archimedian screw groove structure 121, high-speed rotating mixing needle causes laser from fusion welding area molten bath bottom
The molten metal in portion is flowed up along V-arrangement Archimedian screw groove 121, significantly enhances laser from after fusion welding area aperture
The upward flowing of 19 rear molten bath bottom molten metal of wall, effectively prevent laser from molten metal in fusion welding molten bath in bottom
The problem of assembling and forming bottom overlap.
The method and system of the compound penetration fustion welding slab of laser-stirring provided by the invention, can promote the use of slab
It is adaptable during horizontal position welding, vertical position welding and all-position welding etc..
Claims (10)
- A kind of 1. method of the compound penetration fustion welding slab of laser-stirring, it is characterised in that include the following steps：Step 1, provide the first workpiece and second workpiece for needing to weld, and the first workpiece and second workpiece are stainless steel plate；Step 2, accurately docking and clamp the first workpiece and second workpiece；Step 3, provide laser-stirring composite welding system, and laser-stirring composite welding system has laser welding head, stirring Pin, laser welding head, mixing needle are along arranged in rows before and after welding direction；Step 4, the laser-stirring composite welding system that starts, laser beam vertical radiation workpiece surface, laser beam focus hot spot are big It is small to be evenly distributed on the first workpiece and second workpiece；Step 5, gather back of work temperature by temperature sensor in real time, when the temperature collected meets or exceeds workpiece fusing Temperature value when, start electric rotating machine driving mixing needle rotation, linear motor driving mixing needle move down, mixing needle screw in weldering Molten bath, mixing needle and laser beam synchronizing moving are connect, continues welding；Step 6, reach welding distal point when, close laser generator, linear motor driving mixing needle move up, close electricity Machine, completes welding process.
- 2. the method for the compound penetration fustion welding slab of laser-stirring according to claim 1, it is characterised in that：Swash in step 3 Light-stirring composite welding system further includes the linear motor that driving mixing needle moves up and down, and linear motor is fixed on laser welding On head.
- 3. the method for the compound penetration fustion welding slab of laser-stirring according to claim 1, it is characterised in that：Swash in step 3 Light-stirring composite welding system further includes the electric rotating machine of driving mixing needle rotary motion, and electric rotating machine passes through company with mixing needle Fishplate bar is fixed on linear motor.
- 4. the method for the compound penetration fustion welding slab of laser-stirring according to claim 1, it is characterised in that：Swash in step 3 Light-stirring composite welding system further includes the protection gas jets being correspondingly arranged with laser welding head, and protective gas nozzle alignment swashs The region of flush weld weld, and protect gas jets, laser welding head to be fixed together.
- 5. the method for the compound penetration fustion welding slab of laser-stirring according to claim 1, it is characterised in that：Swash in step 3 Light-stirring composite welding system further includes the temperature sensor being placed in below welding starting point, for gathering back of work in real time Temperature.
- 6. the method for the compound penetration fustion welding slab of laser-stirring according to claim 1, it is characterised in that：Stirred in step 3 It is in cylindrical structure to mix pin, and surface is equipped with V-arrangement Archimedian screw groove structure and circular annular form groove structure.
- 7. the method for the compound penetration fustion welding slab of laser-stirring according to claim 1, it is characterised in that：Pass through circle Annular recess structure can accelerate the molten metal of laser from fusion welding area aperture antetheca to be flowed backward around small holes, and pass through V Shape Archimedian screw groove structure can cause laser from the molten metal of fusion welding area molten bath bottom along V-arrangement Archimedes Spiral groove flows up.
- 8. the method for the compound penetration fustion welding slab of laser-stirring according to claim 1, it is characterised in that：Laser-stirring Composite welding system further includes the temperature acquisition system being connected with temperature sensor and temperature acquisition system and manipulator control system The connected processing system of system, in step 5, after temperature sensor collects back of work temperature in real time, transmits a signal to temperature The picture signal that temperature sensor obtains is converted into video electrical signal by acquisition system, temperature acquisition system, and is transferred to processing System, processing system judge whether back of work temperature meets or exceeds the temperature value of workpiece fusing, when temperature is met or exceeded During the temperature value of workpiece fusing, processing system sends the signal for starting electric rotating machine and linear motor to manipulator control system, Manipulator control system control electric rotating machine driving mixing needle rotation, control linear motor driving mixing needle are moved down, stirred Pin screws in welding pool, mixing needle and laser beam synchronizing moving.
- A kind of 9. compound penetration fustion welding slab system of laser-stirring, it is characterised in that：Connect including laser generator through Transmission Fibers The laser welding head for being installed on welding manipulator is connected to, linear motor is fixed on laser welding head, and electric rotating machine passes through shaft coupling Device is connected with mixing needle, then is fixed on by connecting plate on linear motor, laser welding head, mixing needle along before and after welding direction into Row are set；Protection gas jets are fixed on laser welding head, and the region of alignment laser welding head welding, temperature sensor is fixed and put In workpiece bottom part down, it is connected with computer, for gathering back of work temperature in real time；The compound penetration fustion welding of laser-stirring is thick Plate system further includes manipulator control system, and manipulator control system can control linear motor and electric rotating machine so that mixing needle Move up and down and rotate, mixing needle is connected with protective gas jet pipe with laser welding head.
- 10. laser welding system according to claim 1, it is characterised in that：Further include the temperature being connected with temperature sensor Degree acquisition system, the processing system being connected with temperature acquisition system and manipulator control system, temperature sensor collect in real time After back of work temperature, temperature acquisition system is transmitted a signal to, the image that temperature acquisition system obtains temperature sensor is believed Number video electrical signal is converted into, and is transferred to processing system, processing system judges whether back of work temperature meets or exceeds work The temperature value of part fusing, when temperature meets or exceeds the temperature value of workpiece fusing, processing system sends startup to control system The signal of electric rotating machine and linear motor, manipulator control system can control linear motor and electric rotating machine so that on mixing needle Lower movement and rotation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711443958.8A CN107971634A (en) | 2017-12-27 | 2017-12-27 | Method and system for laser-stirring composite deep fusion welding of thick plate |
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| CN201711443958.8A CN107971634A (en) | 2017-12-27 | 2017-12-27 | Method and system for laser-stirring composite deep fusion welding of thick plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014560A (en) * | 2018-08-13 | 2018-12-18 | 燕山大学 | The on-line measuring device and detection method of stirring-head drafts |
| CN109604773A (en) * | 2018-11-16 | 2019-04-12 | 南京理工大学 | Inner wall temperature monitoring method and device when for non-melt pole electrical arc cylinder built-up welding |
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| CN106181022A (en) * | 2016-09-20 | 2016-12-07 | 江西理工大学 | A kind of stirring friction welding agitator head that can improve slab Base Heat input quantity |
| CN107160029A (en) * | 2017-07-12 | 2017-09-15 | 山东大学 | A kind of additional heating source auxiliary friction stir welding method and device |
| CN208374479U (en) * | 2017-12-27 | 2019-01-15 | 长沙理工大学 | Laser-stirring composite deep-fusion welding thick plate system |
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| JP2003080381A (en) * | 2001-09-10 | 2003-03-18 | Yaskawa Electric Corp | Heater of frictional stirring bonding method |
| CN103567626A (en) * | 2012-07-27 | 2014-02-12 | 苹果公司 | Friction stir welding with temperature control |
| CN202780225U (en) * | 2012-09-10 | 2013-03-13 | 昆明理工大学 | Laser-assisted stirring friction seam welding device |
| CN106181022A (en) * | 2016-09-20 | 2016-12-07 | 江西理工大学 | A kind of stirring friction welding agitator head that can improve slab Base Heat input quantity |
| CN107160029A (en) * | 2017-07-12 | 2017-09-15 | 山东大学 | A kind of additional heating source auxiliary friction stir welding method and device |
| CN208374479U (en) * | 2017-12-27 | 2019-01-15 | 长沙理工大学 | Laser-stirring composite deep-fusion welding thick plate system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109014560A (en) * | 2018-08-13 | 2018-12-18 | 燕山大学 | The on-line measuring device and detection method of stirring-head drafts |
| CN109014560B (en) * | 2018-08-13 | 2019-08-23 | 燕山大学 | The on-line measuring device and detection method of stirring-head drafts |
| CN109604773A (en) * | 2018-11-16 | 2019-04-12 | 南京理工大学 | Inner wall temperature monitoring method and device when for non-melt pole electrical arc cylinder built-up welding |
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