CN104625402A - Laser seam side-blown protection device, welding device and welding method - Google Patents
Laser seam side-blown protection device, welding device and welding method Download PDFInfo
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- CN104625402A CN104625402A CN201310566183.9A CN201310566183A CN104625402A CN 104625402 A CN104625402 A CN 104625402A CN 201310566183 A CN201310566183 A CN 201310566183A CN 104625402 A CN104625402 A CN 104625402A
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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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Abstract
The invention relates to the technical field of welding, and discloses a laser seam side-blown protection device, a welding device and a welding method. The protection device comprises a device body. A pull cover and a side-blown part which are used for leading in welding protection gas, and a transverse-blown part which is used for leading in compressed gas are arranged on the device body. The side-blown part has an incident angle. The air flow direction of the transverse-blown part is parallel to the face of the pull cover. The protection device has a pull cover protection function, a side-blown part protection function and a transverse-blown part protection function, can well protect a laser seam, and can make the laser seam formed more uniformly and make the laser seam free of surface oxidation or free of obvious oxidation.
Description
Technical field
The present invention relates to welding technology field, in particular, particularly a kind of laser welded seam side-blown protective device, welding equipment and welding method.
Background technology
Gas shield is an important factor in order of laser weld; laser weld generally adopts side to blow and protects; especially when high power welds; side-blown can dispel part plasma on the one hand; can inert protective gas be covered above molten bath on the other hand; reduce the oxidation of weld seam, meanwhile, the kind of side-blown gas and uninterrupted butt welded seam is shaping and internal soundness has material impact.Along with the increase of laser power, plasma and flue dust obviously increase, higher flame and flue dust is produced in laser incident direction, to laser beam, there is shielding and interference effect, the degree of depth of impact welding and the stability of welding, make appearance of weld not good enough, in order to dispel plasma and flue dust better, then need the flow increasing side-blown gas, but the flow of side-blown gas can not be increased to too high, otherwise easily cause weld seam stay and splash, so, in higher-wattage welding situation, single tube side-blown cannot meet the function of above-mentioned two aspects, two-way gas need be used to carry out respectively dispelling plasma smoke and protection molten bath.
For the situation that face of weld quality requirement is higher, as appearance member etc., require that face of weld is without obvious oxidation even light, single tube side-blown cannot general protection weld seam not oxidized, thus cause face of weld to present black.In single tube side-blown protection situation, when face of weld oxidizing blackening main cause is that thermal weld stress is larger, solidify when weld seam leaves side-blown protection domain and be still in high temperature or red heat state, now, inert gas shielding is imposed until weld seam is cooled to lower temperature if do not continue, weld seam will be oxidized, so a protection gas must be placed drag cover at rear, molten bath, cover is dragged to have certain width and length, pass into inert protective gas, high temperature weld seam can be made to continue for some time until be cooled to lower temperature under the protection gas dragging cover to blow out covers, existing mode of dragging the many employings of cover to drag cover to punch, surface pressure skewness of giving vent to anger like this, the mass flow discrepancy that causes giving vent to anger is even.
So, when High Power Laser Welding, high-quality weld seam be obtained, multi-functional side-blown protective device must be used, there is side-blown, horizontally blow and drag cover defencive function.
Summary of the invention
The object of the invention is to the technical problem for existing in prior art, the side-blown of a kind of laser welded seam protective device, welding equipment and welding method are provided.
In order to solve problem set forth above, the technical solution used in the present invention is:
Laser welded seam side-blown protective device, comprises device body, it is characterized in that: described device body is also provided with and drags cover and side-blown for what pass into welding protection gas, and blow for passing into the horizontal of Compressed Gas; And described side-blown has an incident angle, the described horizontal airflow direction blown with drag cover parallel.
According to a preferred embodiment of the invention: described in drag cover to be porous medium.
According to a preferred embodiment of the invention: described in drag the length of cover and width to be slightly less than length and the width of described device body.
According to a preferred embodiment of the invention: the rear portion of described device body is provided with and the first air inlet dragging cover to be connected, the upper forequarter of described device body is provided with the second air inlet be connected with described side-blown, and the upper middle side part of described device body is provided with and blows with horizontal the 3rd air inlet be connected.
According to a preferred embodiment of the invention: the upside of described device body is provided with a groove, described groove is provided with cover plate, the inner side of described cover plate is provided with the first cavity, describedly horizontally to blow for being located at cover plate side and the opening be communicated with the first cavity, and described first cavity is connected with the 3rd air inlet.
According to a preferred embodiment of the invention: the downside of described device body is provided with the second cavity be connected with the first air inlet, described downside of dragging cover to be covered on described second cavity, the device body of described second cavity side is provided with projection, and described side-blown is connected with the second air inlet through projection inside.
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 give vent to anger in the side of dragging cover to be adjacent to gap, the side of face and projection is coplanar.
According to a preferred embodiment of the invention: described horizontal to blow passed into Compressed Gas be compressed air, and described side-blown and the welding protection gas dragging cover to pass into are argon gas.
The present invention also provides a kind of welding equipment, comprises connection bracket and laser welding system, and also comprises above-mentioned laser welded seam side-blown protective device, and described laser welding system and laser welded seam side-blown protective device are movably installed in connection bracket respectively.
The present invention also provides a kind of welding method based on above-mentioned welding equipment, comprises the following steps:
Step S110, installs described laser welded seam side-blown protective device, plumb joint, connection bracket the surface being placed on workpiece to be welded;
Step S120, adjusts the height of described plumb joint, and adjusts described laser welded seam side-blown protective device and the relativeness between workpiece to be welded and laser beam;
Step S130, the first to the 3rd air inlet to described laser side-blown protective device passes into corresponding welding gas, and regulates the gas flow size of the first to the 3rd air inlet;
Step S140, opens welding laser, and plumb joint is advanced along presetting welding direction with pre-set velocity, and described laser welded seam side-blown protective device is positioned at the rear side of welding direction;
Step S150, observes the stability of welding process and the protected effect of postwelding weld seam;
Step S160, the position readjusting each air inlet gas flow and described laser welded seam side-blown protective device according to welding process stability and weld seam protection effect is welded, again until obtain good weld seam protection effect.
Compared with prior art, beneficial effect of the present invention is: the present invention has and drags cover, side-blown and horizontally blow three defencive functions, has good protection, laser welded seam can be made shaping more even to laser weld, surperficial non-oxidation or without obviously oxidation; Wherein, cover is dragged to leaving molten bath but still the weld seam that solidifies being in the condition of high temperature proceeds protection against oxidation, weld seam light can be made; Side-blown can dispel the plasma produced in part molten bath on the one hand, improves uniformity and the smoothness of appearance of weld, can carry out protection against oxidation on the other hand to molten bath; And horizontal blowing has higher gas flow rate; to be positioned at above laser weld pools more nearby; the plasma produce laser weld and flue dust have obvious inhibitory action; reduce the interference to incident laser and shielding; improve stability and the depth of weld of welding; horizontal function of blowing can shield the splashing produced in welding process above molten bath simultaneously, has significant protective effect to laser welding system eyeglass.
Accompanying drawing explanation
Fig. 1 is the side structure chart of laser welded seam of the present invention side-blown protective device.
Fig. 2 is the side explosive view of laser welded seam of the present invention side-blown protective device.
Fig. 3 is the opposite side explosive view of laser welded seam of the present invention side-blown protective device.
Fig. 4 is the opposite side structure chart of laser welded seam of the present invention side-blown protective device.
Fig. 5 is the structure chart of the welding equipment of laser welded seam of the present invention side-blown protective device composition.
Fig. 6 is the welding method flow chart of the welding equipment of laser welded seam of the present invention side-blown protective device composition.
Fig. 7 is the particular flow sheet of step S120 in Fig. 6 of the present invention.
Description of reference numerals: 100, device body, 110, laser welded seam side-blown protective device, 111, drag cover, 112, side-blown; 113, horizontally to blow, the 114, second air inlet, the 115, the 3rd air inlet; 116, the first air inlet, 117, installing hole, 118, groove; 119, cover plate, 120, connection bracket, the 121, first cavity; 122, the 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 described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Consult shown in Fig. 1 ~ Fig. 4; laser welded seam side-blown protective device 110 provided by the invention; comprise device body 100, described device body 100 is also provided with for passing into dragging cover 111 and blowing side 112 of welding protection gas, and blows 113 for passing into the horizontal of Compressed Gas.And, the rear portion of described device body 100 is provided with and the first air inlet 116 dragging cover 111 to be connected, the upper forequarter of described device body 100 is provided with the second air inlet 114 be connected with described side-blown 112, and the upper middle side part of described device body is provided with and blows 113 the 3rd air inlets 115 be connected with horizontal; Can pass into protection-gas welding from the first air inlet 116, and protective gas can spray from the described cover 111 that drags; Can pass into protection-gas welding from the second air inlet 114, and protective gas can spray from described side-blown 112; Can pass into Compressed Gas from the 3rd air inlet 115, Compressed Gas horizontally can blow 113 ejections from described.
Concrete, the upside of device body 100 is provided with a groove 118, described groove 118 is provided with cover plate 119, the inner side of described cover plate 119 is provided with the first cavity 121, describedly horizontally blow 113 for being located at cover plate 119 side and the opening be communicated with the first cavity 121, and the first cavity 121 is connected with the 3rd air inlet 115; The downside of described device body 100 is provided with the second cavity 122 be connected with the first air inlet 116, described downside of dragging cover 111 to be covered on described second cavity 122, in the present embodiment, described drag the length of cover 111 and width to be slightly less than described device body 100 length and width, in order to fully realize drag cover to give vent to anger.The device body 100 of described second cavity 122 side is provided with projection 123, and described side-blown 112 is the duct be connected with the second air inlet 114 through projection 123 inside; The described side of cover 111 of dragging is provided with the gap 124 coordinated with projection 123, and give vent to anger in the side of dragging cover 111 to be adjacent to gap 124, face 1112 is coplanar with the side of projection 123, drag the side of cover 111 also can give vent to anger like this, therefore drag cover 110 to comprise main give vent to anger face 1110 and side to give vent to anger face 1112, in order to coordinate the side-blown 112 with incident angle, strengthen the effect of side-blown 112 further.
Above-mentioned drags cover 111, and the gas passed into is protection-gas welding, is communicated with the first air inlet 116.The described cover 111 that drags has certain length and width, and can be processed into difformity, as arc etc., because the face of giving vent to anger is comparatively large, to leaving molten bath but still the weld seam that solidifies being in the condition of high temperature proceeds protection against oxidation, can make weld seam light.Cover 111 face of giving vent to anger is dragged to use material to be porous medium; porous medium has certain air penetrability; certain gas pressure can be born; after welding protection gas passes into from the first air inlet 116; certain pressure is formed in the second cavity 122 dragging cover 111 inside; the gas pressure dragging cover 111 face of giving vent to anger to bear is evenly distributed, and gives vent to anger uniform flow in whole face.In the present embodiment, drag cover 111 to be square panel, length and width are respectively 80mm and 40mm, drag cover porous medium to adopt copper filter disc.
Above-mentioned side-blown 112, the gas passed into is protection-gas welding, is communicated with the second air inlet 114.And described side-blown 112 has certain incident angle; during welding; aim at welding pool and be blown into protection gas; the plasma produced in part molten bath can be dispelled on the one hand, improve uniformity and the smoothness of appearance of weld, protection against oxidation can be carried out to molten bath on the other hand; the gas flow passed into is moderate; in this experimental example, side blowout throughput is adjustable at 10 ~ 30L/min, and the gas passed into is argon gas.
Above-mentioned horizontally blow 113, the gas passed into is Compressed Gas, is communicated with the 3rd air inlet 115.Described horizontally blow 113 there is higher gas flow rate, to be positioned at above laser weld pools more nearby, the plasma produce laser weld and flue dust have obvious inhibitory action, reduce the interference to incident laser and shielding, improve stability and the depth of weld of welding; Simultaneously can shield the splashing produced in welding process above molten bath, Fig. 5 is referred to laser welding system 130() eyeglass has significant protective effect.In the present embodiment, Compressed Gas is compressed air, has stronger pressure.
Above-described three road gases, namely drag cover 111, side-blown 112, horizontal blow 113 between must have good matching relationship.That is: blow side and 112 there is certain incident angle, front end with drag cover 111 front end to be close, avoid being involved in air between two strands of air-flows, affect protected effect, in the present embodiment, side-blown angle can be 20-60 degree, preferably 45 degree; It is horizontal that to blow 113 airflow directions parallel with dragging 111, cover, namely parallel with dragging the master of cover face 1110 of giving vent to anger, horizontal blow 113 be mainly used in dispelling produce in welding process plasma, flue dust and splashing, avoid it in light beam incident direction to the shielding of laser beam and interference effect, therefore the horizontal height blowing 113 should ensure at lower position, namely with drag the distance of cover 111 less, in the present embodiment, this distance can be 10mm-50mm, is preferably 35mm.
Consult shown in Fig. 4, because this laser welded seam side-blown protective device 110 uses together with laser welding system, so be also provided with installing hole 117 on device body 100, so that assembling.
Consult shown in Fig. 5; in addition; the present invention also provides a kind of welding equipment formed according to above-mentioned laser welded seam side-blown protective device 110; comprise connection bracket 120 and laser welding system 130; and also comprise above-mentioned laser welded seam side-blown protective device 110, and described laser welding system 130 and laser welded seam side-blown protective device 110 are installed in connection bracket 120 respectively.
Consult shown in Fig. 6, on the basis of above-mentioned welding equipment, its welding method is specific as follows:
Step S110, installs described laser welded seam side-blown protective device 110, plumb joint 130, connection bracket 120 surface being placed on workpiece to be welded; Be specially: the installing hole 117 of the protective device 110 that one end of connection bracket 120 and described laser welded seam blown side is connected, and the other end of connection bracket 120 is connected with plumb joint 130; After workpiece to be welded places, the protective device 110 that blown side by laser welded seam is placed in the surface of workpiece to be welded; And, make plumb joint 130 laser beam aim at the welding line joint of workpiece to be welded.
In the present embodiment, before above-mentioned steps S110, above-mentioned welding method also comprises: cleaning is carried out on the surface for the treatment of welding work pieces.Because surface of the work may exist some other impurity such as dust, weld seam during welding, may be made to occur splashing and pore etc.Therefore, the surface for the treatment of welding work pieces is before welding carried out cleaning and can be improved welding effect.
Step S120, adjusts the height of described plumb joint 130, and laser welded seam side-blown protective device 110 described in adjustment and the relativeness between workpiece to be welded and laser beam.
Consult shown in Fig. 7, specifically comprise the following steps: step S1210, adjustment plumb joint 130 and the spaced surface predeterminable range of workpiece to be welded, namely have default defocusing amount in welding process, and defocusing amount be exactly focus from the distance between working substance, the impact of defocusing amount welding quality is very large.
Step S1220, the Height Adjustment of plumb joint 130 well after, then carry out adjustment laser welded seam side-blown protective device 110 and the relativeness between workpiece to be welded and plumb joint 130.First adjust the position relationship between laser welded seam side-blown protective device 110 and workpiece to be welded, namely with the relation of weld seam, by regulating mounting bracket 120, make dragging cover parallel with surface of the work to be welded and reaching predeterminable range of laser welded seam side-blown protective device 110, laser welded seam side-blown protective device 110 is very important with the predeterminable range in plate face, if apart from excessive, then in welding process, easily between laser welded seam side-blown protective device 110 and workpiece weld seam, be involved in air, cause weld seam to be oxidized; Apart from too small, then in welding process, laser welded seam side-blown protective device 110 easily collides with workpiece to be welded, and in the present embodiment, the distance between laser welded seam side-blown protective device 110 and workpiece to be welded can be set to 1mm-20mm, is preferably set to 10mm.After adjustment laser welded seam side-blown protective device 110 reaches predeterminable range, also need adjustment laser welded seam side-blown protective device 110 symmetrical in welding direction, cover weld seam preferably to make the air flow energy that goes out dragging cover.
Step S1230; after position relationship between adjustment laser welded seam side-blown protective device 110 and workpiece to be welded; position relationship again between adjustment and plumb joint 130 laser beam; be specially: by regulating mounting bracket 120; laser welded seam is blown side protective device 110 to laser beam anterior-posterior translation, until laser molten pool position is aimed in side-blown 112.Molten baths are aimed in side-blown 112 can dispel plasma above part molten bath and flue dust, and the smoothness of butt welded seam surface forming has material impact.
Step S130, to each air inlet of described laser welded seam side-blown protective device 110, namely the first to the 3rd air inlet (116,114,115) passes into corresponding welding gas, and regulates the gas flow size of the first to the 3rd air inlet (116,114,115); Be specially: the first air inlet 116 passes into protection-gas welding and regulates out throughput, in the present embodiment, the first air inlet 116 passes into argon gas, and flow set can be 5-100L/min, is preferably 30L/min; Second air inlet 114 passes into protection-gas welding and regulates out throughput, and in the present embodiment, the second air inlet 114 passes into argon gas, and flow set can be 5-50L/min, is preferably 20L/min; 3rd air inlet 115 passes into Compressed Gas and sets outlet pressure, and in the present embodiment, the 3rd air inlet 115 passes into compressed air, and pressure arranges and can be 0.1-2MPa, is preferably 0.5MPa.
Step S140, opens welding laser, and plumb joint 130 is advanced along presetting welding direction with pre-set velocity, and laser welded seam side-blown protective device 110 is positioned on rear side of welding direction; Be specially: described laser welded seam side-blown protective device 110 is installed on motion lathe or robot; laser welded seam side-blown protective device 110 can be made to carry out photocoagulation along bead direction with pre-set velocity; in the present embodiment, speed of welding and laser power can carry out corresponding setting according to the thickness of slab of welding work pieces.
Step S150, observes the stability of welding process and the protected effect of postwelding weld seam; Whether be specially: in welding process, observe spatter and molten bath and stablize, whether the protected effect of postwelding weld seam is good, whether face of weld is shaping even etc.
Step S160, the position readjusting each air inlet gas flow and side-blown protective device according to welding process stability and weld seam protection effect is welded, again until obtain good weld seam protection effect; Be specially: the welding process stability arrived according to the observation and appearance of weld and protected effect; regulate the position relationship between the flow of each air inlet and laser welded seam side-blown protective device 110 and workpiece and laser beam; need repeat repeatedly, until obtain good welding effect.
Present invention employs and drag cover 111, side-blown 112 and horizontally blow 113 3 defencive functions, to laser welded seam, there is good protection, laser welded seam can be made shaping more even, surperficial non-oxidation or without obviously oxidation; Further, cover 111 is dragged to leaving molten bath but still the weld seam that solidifies being in the condition of high temperature proceeds protection against oxidation, weld seam light can be made; And 112 1 aspects that blow side can dispel the plasma produced in part molten bath, improve uniformity and the smoothness of appearance of weld, protection against oxidation can be carried out to molten bath on the other hand; Simultaneously; horizontally blow 113 there is higher gas flow rate; to be positioned at above laser weld pools more nearby; the plasma produce laser weld and flue dust have obvious inhibitory action; reduce the interference to incident laser and shielding; improve stability and the depth of weld of welding, horizontal function of blowing can shield the splashing produced in welding process above molten bath simultaneously, has significant protective effect to laser welding system eyeglass.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. laser welded seam side-blown protective device, comprises device body, it is characterized in that: described device body is also provided with for passing into dragging cover (111) and blowing side (112) of welding protection gas, and blows (113) for passing into the horizontal of Compressed Gas; And described side-blown (112) has an incident angle, the described horizontal airflow direction blowing (113) is parallel with dragging cover (111) face.
2. laser welded seam according to claim 1 side-blown protective device, is characterized in that: described in drag cover (111) to be porous medium.
3. laser welded seam according to claim 2 side-blown protective device, is characterized in that: described in drag the length of cover (111) and width to be slightly less than length and the width of described device body (100).
4. laser welded seam side-blown protective device according to claim 1; it is characterized in that: the rear portion of described device body is provided with and the first air inlet (116) dragging cover (111) to be connected; the upper forequarter of described device body is provided with the second air inlet (114) be connected with described side-blown (112), and the upper middle side part of described device body is provided with the 3rd air inlet (115) blowing (113) with horizontal and be connected.
5. laser welded seam side-blown protective device according to claim 4; it is characterized in that: the upside of described device body is provided with a groove (118); 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 blow (113) are for being located at cover plate (119) side and the opening be communicated with the first cavity (121), and described first cavity (121) is connected with the 3rd air inlet (115).
6. laser welded seam side-blown protective device according to claim 4; it is characterized in that: the downside of described device body (100) is provided with the second cavity (122) that to be connected with the first air inlet (116); described downside of dragging cover (111) to be covered on described second cavity (122); the device body (100) of described second cavity (122) side is provided with projection (123), and described side-blown (112) is connected with the second air inlet (114) through projection (123) inside.
7. laser welded seam side-blown protective device according to claim 6; it is characterized in that: described in drag the side of cover (111) to be provided with the gap (124) coordinated with projection (123), and give vent to anger in the side of dragging cover (111) to be adjacent to gap (124), the side of face (1112) and projection (123) is coplanar.
8. laser welded seam according to claim 1 side-blown protective device, is characterized in that: described horizontal to blow the Compressed Gas that (113) pass into be compressed air, and described side-blown (112) and the welding protection gas dragging cover (111) to pass into are argon gas.
9. a welding equipment; comprise connection bracket (120) and laser welding system (130); it is characterized in that: this welding equipment also comprises laser welded seam side-blown protective device (110) described in any one of claim 1 ~ 8, and described laser welding system (130) and laser welded seam side-blown protective device (110) are movably installed in connection bracket (120) respectively.
10. based on a welding method for welding equipment according to claim 9, it is characterized in that: the method comprises the following steps,
Step S110, installs described laser welded seam side-blown protective device (110), plumb joint (130), connection bracket (120) surface being placed on workpiece to be welded;
Step S120, adjusts the height of described plumb joint (130), and adjusts the relativeness between described laser welded seam side-blown protective device (110) and workpiece to be welded and laser beam;
Step S130, the first to the 3rd air inlet (116,114,115) to described laser side-blown protective device (110) passes into corresponding welding gas, and regulates the gas flow size of the first to the 3rd air inlet (116,114,115);
Step S140, opens welding laser, and plumb joint (130) is advanced along presetting welding direction with pre-set velocity, and described laser welded seam side-blown protective device (110) is positioned at the rear side of welding direction;
Step S150, observes the stability of welding process and the protected effect of postwelding weld seam;
Step S160, the position readjusting each air inlet gas flow and described laser welded seam side-blown protective device (110) according to welding process stability and weld seam protection effect is welded, again until obtain good weld seam protection effect.
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| CN201310566183.9A 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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| CN201310566183.9A 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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| CN104625402B CN104625402B (en) | 2016-09-14 |
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| CN107052576A (en) * | 2016-12-27 | 2017-08-18 | 大族激光科技产业集团股份有限公司 | Method and apparatus 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 |
| 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 |
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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 |
| 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 |
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| CN104625402B (en) | 2016-09-14 |
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