CN104625402B - The side-blown protection device of laser welded seam, welding equipment and welding method - Google Patents
The side-blown protection device of laser welded seam, welding equipment and welding method Download PDFInfo
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- CN104625402B CN104625402B CN201310566183.9A CN201310566183A CN104625402B CN 104625402 B CN104625402 B CN 104625402B CN 201310566183 A CN201310566183 A CN 201310566183A CN 104625402 B CN104625402 B CN 104625402B
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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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
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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
- B23K26/24—Seam welding
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to welding technology field, disclose the side-blown protection device of laser welded seam, welding equipment and welding method.This protection device includes device body, described device body is additionally provided with and drags cover and side-blown for be passed through welding protection gas, and blow for being passed through the horizontal of compressed gas；And described side-blown there is an incident angle, the described horizontal airflow direction blown is with to drag cover parallel.The present invention has and drags cover, side-blown and horizontal blow three defencive functions, has good protection to laser weld, laser welded seam molding can be made more uniform, surface non-oxidation or without substantially oxidation.
Description
Technical field
The present invention relates to welding technology field, in particular, side-blown particularly to a kind of laser welded seam
Protection device, welding equipment and welding method.
Background technology
Gas shield is an important factor in order of laser welding, and laser welding typically uses side to blow
Gas shielded, especially in the case of high power welds, side-blown one side can dispel part plasma
Body, on the other hand can cover inert protective gas above molten bath, reduce the oxidation of weld seam, with
Time, the kind of side-blown gas and uninterrupted butt welded seam molding and internal soundness have material impact.With
The increase of laser power, plasma and flue dust substantially to increase, produce in laser light incident direction higher
Flame and flue dust, have shielding and interference effect to laser beam, affects the degree of depth of welding and the steady of welding
Qualitative, make appearance of weld not good enough, in order to preferably dispel plasma and flue dust, then need to increase side-blown gas
Flow, but the flow of side-blown gas can not increase to the highest, the most easily causes weld seam to stay and flies
Spatter, so, in the case of higher-wattage welds, single tube is side-blown cannot meet above-mentioned both sides merit
Can, two-way gas need to be used to carry out respectively dispelling plasma smoke and protection molten bath.
When face of weld prescription is higher, such as appearance member etc., it is desirable to face of weld is without bright
Aobvious oxidation is the brightest, and single tube is side-blown cannot protect weld seam not oxidized comprehensively, thus causes weld seam table
Face presents black.In the case of the side-blown protection of single tube, face of weld oxidizing blackening main reason is that weldering
Connect heat input bigger time, still in high temperature or red heat state when solidification weld seam leaves side-blown protection domain,
Now, if not continuing to impose inert gas shielding until weld seam is cooled to lower temperature, weld seam will oxygen
Change, so a protection gas must be placed drag cover at rear, molten bath, drag cover to have certain width and length,
It is passed through inert protective gas, when high temperature weld seam can be made to continue one section under the protection gas dragging cover to blow out covers
Between until being cooled to lower temperature, the existing mode dragging the many employings of cover to drag cover to punch, such go out
Gas surface pressure skewness, the mass flow discrepancy that causes giving vent to anger is even.
So, when High Power Laser Welding, high-quality weld seam to be obtained, it is necessary to use multi-functional
Side-blown protection device, have and side-blown, horizontal blow and drag cover defencive function.
Summary of the invention
Present invention aims to technical problem present in prior art, it is provided that a kind of Laser Welding
Stitch side-blown protection device, welding equipment and welding method.
In order to solve posed problems above, the technical solution used in the present invention is:
The side-blown protection device of laser welded seam, including device body, it is characterised in that: described device body
On be additionally provided with and drag cover and side-blown for be passed through welding protection gas, and for being passed through the horizontal stroke of compressed gas
Blow；And described side-blown there is an incident angle, the described horizontal airflow direction blown is with to drag cover parallel.
According to a preferred embodiment of the invention: described in drag cover be porous medium.
According to a preferred embodiment of the invention: described in drag the length and width of cover to be slightly less than described device
The length and width of body.
According to a preferred embodiment of the invention: the rear portion of described device body is provided with and is connected with dragging cover
The first air inlet, the upper forequarter of described device body be provided with described side-blown be connected second enter
QI KOU, and the upper middle side part of described device body is provided with and horizontal the 3rd air inlet blowing and being connected.
According to a preferred embodiment of the invention: the upside of described device body is provided with a groove, described
Being provided with cover plate on groove, the inner side of described cover plate is provided with the first cavity, described horizontal blows for being located at cover plate
Side the opening connected with the first cavity, and described first cavity and the 3rd air inlet be connected.
According to a preferred embodiment of the invention: the downside of described device body is provided with and the first air inlet
The second cavity being connected, described in drag cover cap together in the downside of described second cavity, described second cavity
The device body of side is provided with projection, described side-blown is connected through projection is internal with the second air inlet.
According to a preferred embodiment of the invention: described in drag the side of cover to be provided with the gap coordinated with projection,
And face of giving vent to anger, the side dragging cover to be adjacent to gap is coplanar with the side of projection.
According to a preferred embodiment of the invention: described horizontal to blow be passed through compressed gas be compressed air,
Described welding protection gas that is side-blown and that drag cover to be passed through is argon.
The present invention also provides for a kind of welding equipment, including connecting support and laser welding system, and also wraps
Include the side-blown protection device of above-mentioned laser welded seam, and described laser welding system and the side-blown protection of laser welded seam
Device is the most movably installed on connection support.
The present invention also provides for a kind of welding method based on above-mentioned welding equipment, comprises the following steps:
Step S110, installs side-blown for described laser welded seam protection device, plumb joint, connection support
It is placed on the surface of workpiece to be welded；
Step S120, adjusts the height of described plumb joint, and adjusts described laser welded seam side-blown protection dress
Put the relativeness between workpiece to be welded and laser beam；
Step S130, is passed through corresponding to the first to the 3rd air inlet of the side-blown protection device of described laser
Welding gas, and regulate the gas flow size of the first to the 3rd air inlet；
Step S140, opens welding laser, and makes plumb joint with pre-set velocity along presetting before welding direction
Entering, the side-blown protection device of described laser welded seam is positioned at the rear side of welding direction；
Step S150, observes stability and the protected effect of postwelding weld seam of welding process；
Step S160, readjusts each air inlet implication according to welding process stability and weld seam protection effect
The position of body flow and the side-blown protection device of described laser welded seam is welded again, until obtaining good
Weld seam protection effect.
Compared with prior art, the beneficial effects of the present invention is: the present invention have drag cover, side-blown and
Horizontal blow three defencive functions, laser weld is had good protection, laser welded seam molding can be made
More uniform, the substantially oxidation of surface non-oxidation or nothing；Wherein, drag cover can to leave molten bath but still in
The solidification weld seam of the condition of high temperature proceeds protection against oxidation, makes weld seam light；Side-blown one side is permissible
Dispel the plasma produced in part molten bath, improve uniformity and the smoothness of appearance of weld, another
Aspect can carry out protection against oxidation to molten bath；And horizontal blowing has higher gas flow rate, it is positioned at Laser Welding
Connecing above molten bath more nearby, the plasma producing laser welding and flue dust have and significantly suppress to make
With, reduce the interference to incident laser and shielding, improve stability and the depth of weld of welding, simultaneously
Horizontal function of blowing can shield the splashing produced in welding process above molten bath, has laser welding system eyeglass
There is significant protective effect.
Accompanying drawing explanation
Fig. 1 is the side structure chart of the side-blown protection device of laser welded seam of the present invention.
Fig. 2 is the side explosive view of the side-blown protection device of laser welded seam of the present invention.
Fig. 3 is the opposite side explosive view of the side-blown protection device of laser welded seam of the present invention.
Fig. 4 is the opposite side structure chart of the side-blown protection device of laser welded seam of the present invention.
Fig. 5 is the structure chart of the welding equipment of the laser welded seam side-blown protection device composition of the present invention.
Fig. 6 is the welding method stream of the welding equipment of the laser welded seam side-blown protection device composition of the present invention
Cheng Tu.
Fig. 7 be the present invention Fig. 6 in the particular flow sheet of step S120.
Description of reference numerals: 100, device body, 110, the side-blown protection device of laser welded seam, 111,
Drag cover, 112, side-blown, 113, horizontal blow, the 114, second air inlet, the 115, the 3rd air inlet, 116,
First air inlet, 117, installing hole, 118, groove, 119, cover plate, 120, connect support, 121,
First cavity, the 122, second cavity, 123, projection, 124, gap, 130, plumb joint, 1110,
Main face of giving vent to anger, 1112, side gives vent to anger face.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is more fully retouched
State.Accompanying drawing gives presently preferred embodiments of the present invention.But, the present invention can be different with many
Form realizes, however it is not limited to embodiment described herein.On the contrary, provide these embodiments
Purpose is to make the understanding to the disclosure more thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, and it can directly exist
On another element or element placed in the middle can also be there is.When an element is considered as " connection "
Another element, it can be directly to another element or may be simultaneously present centering elements.
Unless otherwise defined, all of technology used herein and scientific terminology with belong to the present invention's
The implication that those skilled in the art are generally understood that is identical.Institute the most in the description of the invention
The term used is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting the present invention.
Term as used herein " and/or " include the arbitrary of one or more relevant Listed Items and
All of combination.
Refering to shown in Fig. 1～Fig. 4, the side-blown protection device of laser welded seam 110 that the present invention provides, including
Device body 100, described device body 100 is additionally provided with and drags cover for be passed through welding protection gas
111 and side-blown 112, and blow 113 for being passed through the horizontal of compressed gas.Further, described device body
The rear portion of 100 is provided with and the first air inlet 116 dragging cover 111 to be connected, described device body 100
Upper forequarter is provided with the second air inlet 114 being connected with described side-blown 112, and described device is originally
The upper middle side part of body is provided with and blows 113 the 3rd air inlets 115 being connected with horizontal；Can be from the first air inlet 116
It is passed through welding protection gas, and protective gas can drag cover 111 to spray from described；Can be from the second air inlet 114
It is passed through welding protection gas, and protective gas can be from described side-blown 112 ejections；Can be from the 3rd air inlet 115
Being passed through compressed gas, compressed gas horizontal can blow 113 ejections from described.
Concrete, the upside of device body 100 is provided with a groove 118, and described groove 118 is provided with
Cover plate 119, the inner side of described cover plate 119 is provided with the first cavity 121, described horizontal blows 113 for being located at lid
Plate 119 side the opening connected with the first cavity 121, and the first cavity 121 is to enter with the 3rd
QI KOU 115 is connected；The downside of described device body 100 is provided with and is connected with the first air inlet 116
The second cavity 122, described in drag cover 111 to be covered on the downside of described second cavity 122, in this enforcement
In mode, described in drag the length and width of cover 111 to be slightly less than the length and width of described device body 100,
Cover is dragged to give vent to anger in order to fully realization.The device body 100 of described second cavity 122 side is provided with
Projection 123, described side-blown 112 is through the internal hole being connected with the second air inlet 114 of projection 123
Road；The described side dragging cover 111 is provided with the gap 124 coordinated with projection 123, and drags cover 111 neighbouring
Face 1112 of giving vent to anger in the side of gap 124 is coplanar with the side of projection 123, so drags the side of cover 111
Also can give vent to anger, therefore drag cover 110 to include main giving vent to anger face 1110 and give vent to anger face 1112 in side, in order to join
Close and there is side-blown the 112 of incident angle, further enhance the effect of side-blown 112.
Above-mentioned drags cover 111, and the gas being passed through is welding protection gas, connects with the first air inlet 116.
Described drag cover 111 to have certain length and width, and difformity can be processed into, such as arc etc., because of
Face of giving vent to anger is relatively big, can be to leaving molten bath but solidification weld seam still in the condition of high temperature proceeds anti-oxidation
Protection, makes weld seam light.Drag cover 111 give vent to anger face use material be porous medium, porous medium have
Having certain air penetrability, can bear certain gas pressure, welding protection gas is from the first air inlet 116
After being passed through, in dragging the second cavity 122 within cover 111, form certain pressure, drag cover 111
The gas pressure that the face of giving vent to anger is born is evenly distributed, and gives vent to anger uniform flow in whole face.In the present embodiment,
Dragging cover 111 is square panel, and length and width is respectively 80mm and 40mm, drags cover concrete dynamic modulus
Medium uses copper filter disc.
Above-mentioned side-blown 112, the gas being passed through is welding protection gas, connects with the second air inlet 114.
And described side-blown 112 have certain incident angle, during welding, alignment welding pool is blown into guarantor
Protect gas, on the one hand can dispel the plasma produced in part molten bath, improve the uniform of appearance of weld
Property and smoothness, on the other hand molten bath can be carried out protection against oxidation, the gas flow being passed through is moderate,
In this experimental example, side blowout throughput scalable is 10～30L/min, and the gas being passed through is argon.
Above-mentioned horizontal blowing 113, the gas being passed through is compressed gas, connects with the 3rd air inlet 115.Institute
That states horizontal blow 113 and has higher gas flow rate, is positioned at above laser weld pools more nearby, to swashing
Plasma and flue dust that photocoagulation produces have obvious inhibitory action, reduce and do incident laser
Disturb and shield, improve stability and the depth of weld of welding；Can shield above molten bath simultaneously and weld
The splashing produced in journey, refers to Fig. 5 to laser welding system 130() eyeglass has and significantly protects work
With.In the present embodiment, compressed gas is compressed air, has stronger pressure.
Above-described three road gases, i.e. drag cover 111, side-blown 112, horizontal blowing must have between 113
Preferably matching relationship.That is: side-blown 112 have certain incident angle, front end with drag cover 111 front end
It is close, it is to avoid between two strands of air-flows, be involved in air, affect protected effect, in the present embodiment,
Side-blown angle can be 20-60 degree, preferably 45 degree；Horizontal blow 113 airflow directions with drag cover 111 put down
OK, face 1110 of i.e. giving vent to anger with the master dragging cover is parallel, horizontal blow 113 and is mainly used in dispelling in welding process product
Raw plasma, flue dust and splashing, it is to avoid it and is done the shielding of laser beam in light beam incident direction
Disturbing effect, the most horizontal height blowing 113 should ensure that at lower position, i.e. less with the distance dragging cover 111,
In the present embodiment, this distance can be 10mm-50mm, preferably 35mm.
Refering to shown in Fig. 4, owing to the side-blown protection device of this laser welded seam 110 is first with laser welding
Rise and use, so being additionally provided with installing hole 117 on device body 100, in order to assemble.
Refering to shown in Fig. 5, additionally, the present invention also provides for a kind of according to the above-mentioned side-blown guarantor of laser welded seam
The welding equipment of protection unit 110 composition, including connecting support 120 and laser welding system 130, and also
Including the above-mentioned side-blown protection device of laser welded seam 110, and described laser welding system 130 and laser welded seam
Side-blown protection device 110 is respectively arranged on connection support 120.
Refering to shown in Fig. 6, on the basis of above-mentioned welding equipment, its welding method is specific as follows:
Step S110, by side-blown for described laser welded seam protection device 110, plumb joint 130, connects support
120 install the surface being placed on workpiece to be welded；Particularly as follows: the one end that support 120 will be connected
It is connected with the installing hole 117 of the described side-blown protection device of laser welded seam 110, connects support 120
The other end be connected with plumb joint 130；After workpiece to be welded places, by side-blown for laser welded seam guarantor
Protection unit 110 is placed in the surface of workpiece to be welded；And, make plumb joint 130 laser beam be directed at
The welding line joint of workpiece to be welded.
In the present embodiment, before above-mentioned steps S110, above-mentioned welding method also includes: to be welded
The surface connecing workpiece is cleaned processing.There may be some other impurity such as dust due to surface of the work,
Weld seam may be made during welding to occur splashing and pore etc..Therefore, welding workpiece is treated before welding
Surface is cleaned improving welding effect.
Step S120, adjusts the height of described plumb joint 130, and the laser welded seam described in adjustment is side-blown
Relativeness between protection device 110 and workpiece to be welded and laser beam.
Refering to shown in Fig. 7, specifically include following steps: step S1210, adjust plumb joint 130 and treat
The spaced surface predeterminable range of welding workpiece, i.e. has a default defocusing amount in welding process, and out of focus
Amount is exactly focus distance between working substance, and the impact of defocusing amount welding quality is the biggest.
Step S1220, the height adjustment of plumb joint 130 well after, then it is side-blown to be adjusted laser welded seam
Relativeness between protection device 110 and workpiece to be welded and plumb joint 130.First adjust laser welded seam
Position relationship between side-blown protection device 110 and workpiece to be welded, i.e. with the relation of weld seam, by adjusting
Joint mounting bracket 120, makes the cover that drags of the side-blown protection device of laser welded seam 110 put down with surface of the work to be welded
Going and reach predeterminable range, the side-blown protection device of laser welded seam 110 is critically important with the predeterminable range in plate face,
If apart from excessive, then easily at the side-blown protection device of laser welded seam 110 and workpiece in welding process
It is involved in air between weld seam, causes weld seam to aoxidize；Apart from too small, then in welding process, laser welded seam
Side-blown protection device 110 is easily collided with workpiece to be welded, in the present embodiment, and the side-blown guarantor of laser welded seam
Distance between protection unit 110 and workpiece to be welded can be set to 1mm-20mm, is preferably set to 10mm.
After the regulation side-blown protection device of laser welded seam 110 reaches predeterminable range, in addition it is also necessary to adjust laser welded seam
Side-blown protection device 110 is symmetrical in welding direction, so that dragging the air-flow that of cover can preferably
Cover weld seam.
Step S1230, adjusts the position between the side-blown protection device of laser welded seam 110 and workpiece to be welded and closes
After system, then adjust the position relationship between plumb joint 130 laser beam, particularly as follows: pacified by regulation
Dress support 120, by side-blown for laser welded seam protection device 110 to laser beam anterior-posterior translation, until side-blown 112
Alignment laser molten pool position.Side-blown 112 alignment molten baths can dispel plasma above part molten bath and
Flue dust, the smoothness of butt welded seam surface forming has a major impact.
Step S130, to the described each air inlet of the side-blown protection device of laser welded seam 110, i.e. first to
3rd air inlet (116,114,115) is passed through corresponding welding gas, and regulates first to
The gas flow size of three air inlets (116,114,115)；Particularly as follows: the first air inlet 116 leads to
Entering welding protection gas and regulate out throughput, in the present embodiment, the first air inlet 116 is passed through argon
Gas, flow set can be 5-100L/min, preferably 30L/min；Second air inlet 114 is passed through welding
Protection gas also regulates out throughput, and in the present embodiment, the second air inlet 114 is passed through argon, stream
Amount setting can be 5-50L/min, preferably 20L/min；3rd air inlet 115 is passed through compressed gas also
Setting outlet pressure, in the present embodiment, the 3rd air inlet 115 is passed through compressed air, and pressure sets
Putting can be 0.1-2MPa, preferably 0.5MPa.
Step S140, opens welding laser, and makes plumb joint 130 with pre-set velocity along presetting welding side
Marching forward, the side-blown protection device of laser welded seam 110 is positioned on rear side of welding direction；Particularly as follows: it is described
The side-blown protection device of laser welded seam 110 is installed on motion lathe or robot, can make laser
The side-blown protection device of weld seam 110 carries out photocoagulation, at the present embodiment along bead direction with pre-set velocity
In, speed of welding and laser power can carry out corresponding setting according to the thickness of slab of welding workpiece.
Step S150, observes stability and the protected effect of postwelding weld seam of welding process；Particularly as follows:
In welding process, observing spatter and molten bath is the most stable, the protected effect of postwelding weld seam is the best
Good, face of weld molding is the most uniform.
Step S160, readjusts each air inlet implication according to welding process stability and weld seam protection effect
The position of body flow and side-blown protection device is welded again, until obtaining good weld seam protection effect
Really；Particularly as follows: the welding process stability arrived according to the observation and appearance of weld and protected effect, regulation
Position between the flow of each air inlet and the side-blown protection device of laser welded seam 110 and workpiece and laser beam
Put relation, need to repeat repeatedly, until obtaining good welding effect.
Present invention employs drag cover 111, side-blown 112 and horizontal blow 113 3 defencive functions, to Laser Welding
Sewer has good protection, and laser welded seam molding can be made more uniform, and surface non-oxidation or nothing are substantially
Oxidation；Further, drag the cover 111 can be to leaving molten bath but solidification weld seam still in the condition of high temperature proceeds
Protection against oxidation, makes weld seam light；And side-blown 112 1 aspects can dispel and produce in part molten bath
Plasma, improves uniformity and the smoothness of appearance of weld, on the other hand molten bath can be carried out oxygen
Change protection；Meanwhile, horizontal blow 113 there is higher gas flow rate, be positioned at above laser weld pools relatively
Nearby, the plasma producing laser welding and flue dust have obvious inhibitory action, reduce entering
Penetrating interference and the shielding of laser, improve stability and the depth of weld of welding, the most horizontal function of blowing can be
Shield the splashing produced in welding process above molten bath, laser welding system eyeglass is had significantly protection
Effect.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by upper
Stating the restriction of embodiment, that is made under other any spirit without departing from the present invention and principle changes
Become, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, be included in the present invention
Protection domain within.
Claims (8)
1. the side-blown protection device of laser welded seam, including device body, it is characterised in that: described device is originally
It is additionally provided with on body and drags cover (111) and side-blown (112) for be passed through welding protection gas, and be used for leading to
Enter the horizontal of compressed gas and blow (113)；And described side-blown (112) have an incident angle, described horizontal blow
(113) airflow direction is parallel with dragging cover (111) face；The rear portion of described device body is provided with and drags cover
(111) the first air inlet (116) being connected, the upper forequarter of described device body is provided with described
The second air inlet (114) that side-blown (112) are connected, and the upper middle side part of described device body sets
Have and blow the 3rd air inlet (115) that (113) are connected with horizontal；
The upside of described device body is provided with a groove (118), and described groove is provided with lid on (118)
Plate (119), the inner side of described cover plate (119) is provided with the first cavity (121), described horizontal blows (113)
For being located at cover plate (119) side the opening connected with the first cavity (121), and described first cavity
(121) it is connected with the 3rd air inlet (115).
The side-blown protection device of laser welded seam the most according to claim 1, it is characterised in that: described
Dragging cover (111) is porous medium.
The side-blown protection device of laser welded seam the most according to claim 2, it is characterised in that: described
The length and width dragging cover (111) is slightly less than the length and width of described device body (100).
The side-blown protection device of laser welded seam the most according to claim 1, it is characterised in that: described
The downside of device body (100) is provided with the second cavity (122) that is connected with the first air inlet (116),
The described downside dragging cover (111) to be covered on described second cavity (122), described second cavity (122)
The device body (100) of side is provided with projection (123), and described side-blown (112) pass projection (123)
Inside is connected with the second air inlet (114).
The side-blown protection device of laser welded seam the most according to claim 4, it is characterised in that: described
The side dragging cover (111) is provided with the gap (124) coordinated with projection (123), and drags cover (111)
It is adjacent to face (1112) of giving vent to anger, the side of gap (124) coplanar with the side of projection (123).
The side-blown protection device of laser welded seam the most according to claim 1, it is characterised in that: described
Horizontal to blow the compressed gas that (113) be passed through be compressed air, described side-blown (112) and drag cover (111)
The welding protection gas being passed through is argon.
7. a welding equipment, including connecting support (120) and laser welding system (130), its feature
It is: this welding equipment also includes the side-blown protection device of laser welded seam described in any one of claim 1～6
, and described laser welding system (130) and the side-blown protection device of laser welded seam (110) respectively can (110)
Being installed in connection support (120) of movement.
8. a welding method based on the welding equipment described in claim 7, it is characterised in that: should
Method comprises the following steps,
Step S110, by side-blown for described laser welded seam protection device (110), plumb joint (130), connects
Support (120) installs the surface being placed on workpiece to be welded；
Step S120, adjusts the height of described plumb joint (130), and it is side-blown to adjust described laser welded seam
Relativeness between protection device (110) and workpiece to be welded and laser beam；
Step S130, to the side-blown protection device of described laser (110) the first to the 3rd air inlet (116,
114,115) be passed through corresponding welding gas, and regulate the first to the 3rd air inlet (116,114,
115) gas flow size；
Step S140, opens welding laser, and makes plumb joint (130) with pre-set velocity along presetting welding
Advancing in direction, the side-blown protection device of described laser welded seam (110) is positioned at the rear side of welding direction；
Step S150, observes stability and the protected effect of postwelding weld seam of welding process；
Step S160, readjusts each air inlet gas according to welding process stability and weld seam protection effect
The position of flow and the side-blown protection device of described laser welded seam (110) is welded again, until obtaining
Good weld seam protection effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566183.9A CN104625402B (en) | 2013-11-14 | 2013-11-14 | The side-blown protection device of laser welded seam, welding equipment and welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566183.9A CN104625402B (en) | 2013-11-14 | 2013-11-14 | The side-blown protection device of laser welded seam, welding equipment and welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104625402A CN104625402A (en) | 2015-05-20 |
| CN104625402B true CN104625402B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310566183.9A Active CN104625402B (en) | 2013-11-14 | 2013-11-14 | The side-blown protection device of laser welded seam, welding equipment and welding method |
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| CN107052576B (en) * | 2016-12-27 | 2019-01-22 | 大族激光科技产业集团股份有限公司 | Method of the runner cavity without splashing high power laser light penetration weld |
| CN110355467A (en) * | 2018-04-09 | 2019-10-22 | 上海第一机床厂有限公司 | The method of laser welding protective gas conveying device and laser welding |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60106688A (en) * | 1983-11-16 | 1985-06-12 | Hitachi Ltd | Laser working device |
| JP3484994B2 (en) * | 1998-10-12 | 2004-01-06 | スズキ株式会社 | Laser welding equipment |
| CN2659622Y (en) * | 2003-12-16 | 2004-12-01 | 中国航空工业第一集团公司北京航空制造工程研究所 | Gas protector for laser welding and flush welding joint |
| CN2683305Y (en) * | 2004-03-22 | 2005-03-09 | 中国航空工业第一集团公司北京航空制造工程研究所 | Welding wire adding and gas protection integrated device used in laser welding |
| CN2905302Y (en) * | 2006-01-18 | 2007-05-30 | 北京工业大学 | Protective nozzle for laser welding |
| CN101456099B (en) * | 2007-12-13 | 2012-01-25 | 中国科学院力学研究所 | Protection device for laser welding head |
| CN201720590U (en) * | 2010-07-06 | 2011-01-26 | 江南造船(集团)有限责任公司 | Detached manual tracking welding protective drag cover |
| CN103170744B (en) * | 2013-04-11 | 2015-10-14 | 大族激光科技产业集团股份有限公司 | Laser soldering device and welding method |
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