CN106735901A - A kind of method for laser welding of method for laser welding and multilayer weld - Google Patents
A kind of method for laser welding of method for laser welding and multilayer weld Download PDFInfo
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- CN106735901A CN106735901A CN201611088687.4A CN201611088687A CN106735901A CN 106735901 A CN106735901 A CN 106735901A CN 201611088687 A CN201611088687 A CN 201611088687A CN 106735901 A CN106735901 A CN 106735901A
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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 discloses a kind of method for laser welding and the method for laser welding of multilayer weld.The method for laser welding includes：Step 1：The welded seam area of pipe fitting to be welded is carried out into block division, the first welding block includes multiple welding sections, and the second welding block includes multiple welding sections；Step 2：The middle part for selecting welded seam area is starting point, welding section in the middle part of with welded seam area carries out skip welding as starting point, block is welded with the welding section identical in skip welding path for welding, and it is welded by the way of spiral welded from the welding section, until being soldered to the welding block of last block welding block；Step 3：The adjacent welding section of the welding section as starting point using in step 2 carries out skip welding as starting point, block is welded with the welding section identical in skip welding path for welding, and it is welded by the way of spiral welded from the welding section, until being soldered to the welding block of last block welding block.The method for laser welding of the application is beneficial to reduction thermal stress, Reducing distortion.
Description
Technical field
The present invention relates to aero-manufacturing technology field, the laser of more particularly to a kind of method for laser welding and multilayer weld
Welding method.
Background technology
Common welding, as energy input, because the conductive capability of metal is strong, causes weldering typically using low-voltage, high-current
The heat affected area that connects electric current is big, stress is big, deformation is big.Except straight line and circular arc can be welded using automation in common welding process
Connect outer, complicated path of welding will use human weld, and labour intensity is big, work under bad environment.For the weldering of electric current+welding rod
Mode is connect to want to realize that full-automatic welding acquires a certain degree of difficulty.And using laser as energy source, can by the way of coaxial powder-feeding
To realize continuous connection, cladding, forming operation.Laser action is on the surface of weld zone, and the influence to other positions is small,
Heat affected area is small, stress, should diminish, and by the way of the part of the connection of laser, typically part is placed in protective atmosphere,
Or carry out local atmosphere protection to bonding pad, therefore dust and cigarette in laser beam welding is less, environmental pollution is small.
Full-automatic welding can be realized using the welding manner of laser coaxial powder feeding, different parts is spliced to one
Rise.Can be controlled using NC codes or robot language using machine tool or using robot as motion,
Therefore path reasonably planning before part is spliced just with carrying out.The quality of path planning is spliced to the quality of laser welding
The weld affected zone of part, mechanical property have considerable influence.
Thus, it is desirable to have a kind of technical scheme come overcome or at least mitigate prior art at least one drawbacks described above.
The content of the invention
Overcome it is an object of the invention to provide a kind of method for laser welding or at least mitigate prior art in extremely
A few drawbacks described above.
To achieve the above object, the present invention provides a kind of method for laser welding, for welding pipe fitting to be welded, the laser
Welding method includes：Step 1：The welded seam area of pipe fitting to be welded is carried out into block division, first is formed and is welded block and the
Two welding blocks, the first welding block includes multiple welding sections, and the second welding block includes multiple welding sections, described
Welding section of the two ends of the welding section of the first welding block with the second welding block is adjacent, the welding of the second welding block
Welding section of the two ends of section with the first welding block is adjacent；Step 2：The middle part for selecting welded seam area is starting point, to be located at
The welding section of the first welding block at the middle part of the welded seam area or the second welding block carries out skip welding, skip welding path for starting point
For welding welds block with the welding section identical, and it is welded by the way of spiral welded from the welding section, until
It is soldered to the welding block of last block welding block；Step 3：It is adjacent using the welding section as starting point in the step 2
Welding section carries out skip welding for starting point, and block is welded in skip welding path for welding with the welding section identical, and it is adopted from the welding section
Welded with the mode of spiral welded, until being soldered to the welding block of last block welding block.
Preferably, the mode of the spiral welded is specially：With one in the first welding block or the second welding block
Welding section is starting point, the welding section of skip welding to the same weld block nearest with one end of the welding section, the end of the welding section
Referred to as first end, the other end of the welding section is referred to as the second end；Again skip welding to the nearest same weld block in the second end welding
Section；And with the nearest unwelded same weld in the end of welding section-the second of the nearest unwelded same weld block of first end
The order of the welding section of block carries out skip welding.
Preferably, every section of length of the welding section is less than or equal to 12CM.
It is to be welded with multilayer weld for welding present invention also provides a kind of method for laser welding of multilayer weld
Material, every layer of weld seam of material to be welded uses method for laser welding as described above.
Preferably, the side of the welding section subregion is pressed between every layer of the material to be welded by the way of staggeredly
Formula is carried out.
Preferably, the region of the welding section 1/3rd is pressed every time..
The method for laser welding of the application is welded by the way of spiral welded, and the thermal uniformity of each welding section is more
It is good, advantageously reduce thermal stress, reduce thermal deformation.Adjacent welding section is more bad at a distance of more remote thermal uniformity, can be made with this
To evaluate the foundation of thermal uniformity, and thermal uniformity is better, more favourable to reducing thermal stress.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of method for laser welding according to a first embodiment of the present invention.
Fig. 2 is the structural representation of the welded seam area of the method for laser welding shown in Fig. 1.
Fig. 3 is the structure of the multilayer welding region of the method for laser welding of multilayer weld according to a first embodiment of the present invention
Schematic diagram.
Reference
1st, welding section
Specific embodiment
To make the purpose, technical scheme and advantage of present invention implementation clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
A part of embodiment, rather than whole embodiments.Embodiment below with reference to Description of Drawings is exemplary, it is intended to used
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under
Face is described in detail with reference to accompanying drawing to embodiments of the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " are based on accompanying drawing institute
The orientation or position relationship for showing, are for only for ease of the description present invention and simplify description, rather than the dress for indicating or implying meaning
Put or element with specific orientation, with specific azimuth configuration and operation, therefore it is not intended that must be protected to the present invention
The limitation of scope.
Fig. 1 is the schematic flow sheet of method for laser welding according to a first embodiment of the present invention.Fig. 2 is swashing shown in Fig. 1
The structural representation of the welded seam area of photocoagulation method.Fig. 3 is the Laser Welding of multilayer weld according to a first embodiment of the present invention
Connect the structural representation of the multilayer welding region of method.
Method for laser welding as shown in Figure 1, for welding pipe fitting to be welded, the method for laser welding includes：
Step 1：The welded seam area of pipe fitting to be welded is carried out into block division, first is formed and is welded block and the second welding
Block, the first welding block includes multiple welding sections, and the second welding block includes multiple welding sections, the welding of the first welding block
Section two ends with second welding block welding section it is adjacent, second welding block welding section two ends with the first weld zone
The welding section of block is adjacent；
Step 2：Select welded seam area middle part be starting point, with positioned at the middle part of welded seam area first welding block or
The welding section of the second welding block carries out skip welding for starting point, and block is welded in skip welding path for welding and the welding section identical, and
From the welding section, it is welded by the way of spiral welded, until being soldered to the welding block of last block welding block；
Step 3：The adjacent welding section of the welding section as starting point using in step 2 carries out skip welding, skip welding path as starting point
For welding welds block with the welding section identical, and it is welded by the way of spiral welded from the welding section, until
It is soldered to the welding block of last block welding block.
The method for laser welding of the application is welded by the way of spiral welded, and the thermal uniformity of each welding section is more
It is good, advantageously reduce thermal stress, reduce thermal deformation.Adjacent welding section is more bad at a distance of more remote thermal uniformity, can be made with this
To evaluate the foundation of thermal uniformity, and thermal uniformity is better, more favourable to reducing thermal stress.
It is understood that when welding section is divided, you can to divide odd number welding section, it is also possible to weld even number weldering
Section is connect, when welding section is odd number, a welding section at middle part is starting point.When welding section is even number, two welderings at middle part
Connect optional one in section.
In the present embodiment, the mode of spiral welded is specially：With in the first welding block or the second welding block
Individual welding section be starting point, skip welding to the same weld block nearest with one end of the welding section welding section, the welding section should
End is referred to as first end, and the other end of the welding section is referred to as the second end；Again skip welding to the nearest same weld block in the second end weldering
Connect section；And with the nearest unwelded identical weldering in the end of welding section-the second of the nearest unwelded same weld block of first end
The order for connecing the welding section of block carries out skip welding.
In the present embodiment, every section of length of welding section is less than or equal to 12CM.
The application is further elaborated by way of example below.It is understood that this is illustrated do not constitute to this
Any limitation of application.
Referring to Fig. 2, Fig. 2 is an exemplary welded seam area, and the welded seam area is carried out into block division, forms first and welds
Block and the second welding block, the first welding block include multiple welding sections, and the second welding block includes multiple welding sections, the
Welding section of the two ends of the welding section of one welding block with the second welding block is adjacent, and the two of the welding section of the second welding block
Welding section of the end with the first welding block is adjacent；
Step 2：Select welded seam area middle part be starting point, with positioned at the middle part of welded seam area first welding block or
The welding section of the second welding block carries out skip welding for starting point, and block is welded in skip welding path for welding and the welding section identical, and
From the welding section, it is welded by the way of spiral welded, until being soldered to the welding block of last block welding block；
Step 3：The adjacent welding section of the welding section as starting point using in step 2 carries out skip welding, skip welding path as starting point
For welding welds block with the welding section identical, and it is welded by the way of spiral welded from the welding section, until
It is soldered to the welding block of last block welding block.
Referring to Fig. 2, specifically, spiral welded mode is with a welding in the first welding block or the second welding block
Section be starting point, skip welding to the same weld block nearest with one end of the welding section welding section, the end of the welding section is referred to as
First end, the other end of the welding section is referred to as the second end；Again skip welding to the nearest same weld block in the second end welding section；And
With the nearest unwelded same weld block in the end of welding section-the second of the nearest unwelded same weld block of first end
The order of welding section carries out skip welding.
It is to be welded with multilayer weld for welding present invention also provides a kind of method for laser welding of multilayer weld
Material, in the method for laser welding of the multilayer weld, every layer of weld seam of material to be welded uses Laser Welding as described above
Connect method.So, every layer is formed multiple welding sections.
Referring to Fig. 3, in the present embodiment, welding section part area is pressed by the way of staggeredly between every layer of material to be welded
The mode in domain is carried out.
In the present embodiment, the region of welding section 1/3rd is pressed every time.So, often by three layers, the 4th layer is recovered
To a complete welding section.Adopt in this way, by three circulations, path will be returned to the order and state of ground floor.
It is last it is to be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Pipe has been described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, do not make the essence of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution
God and scope.
Claims (6)
1. a kind of method for laser welding, for welding pipe fitting to be welded, it is characterised in that the method for laser welding includes：
Step 1：The welded seam area of pipe fitting to be welded is carried out into block division, first is formed and is welded block and the second weld zone
Block, the first welding block includes multiple welding sections, and the second welding block includes multiple welding sections, first welding
Welding section of the two ends of the welding section of block with the second welding block is adjacent, the two ends of the welding section of the second welding block
Welding section with the first welding block is adjacent；
Step 2：Select welded seam area middle part be starting point, with positioned at the middle part of the welded seam area first welding block or
The welding section of the second welding block carries out skip welding for starting point, and block is welded in skip welding path for welding and the welding section identical, and
From the welding section, it is welded by the way of spiral welded, until being soldered to the welding block of last block welding block；
Step 3：Skip welding, skip welding path are carried out by starting point of the adjacent welding section of the welding section as starting point in the step 2
For welding welds block with the welding section identical, and it is welded by the way of spiral welded from the welding section, until
It is soldered to the welding block of last block welding block.
2. method for laser welding as claimed in claim 1, it is characterised in that the mode of the spiral welded is specially：
It is starting point with a welding section in the first welding block or the second welding block, skip welding to the one end with the welding section is most
The welding section of near same weld block, end of the welding section is referred to as first end, and the other end of the welding section is referred to as the second end；
Again skip welding to the nearest same weld block in the second end welding section；And with the nearest unwelded same weld block of first end
The order of welding section of the nearest unwelded same weld block in the end of welding section-the second carry out skip welding.
3. method for laser welding as claimed in claim 2, it is characterised in that the length of every section of welding section is less than or equal to
12CM。
4. a kind of method for laser welding of multilayer weld, has the material to be welded of multilayer weld for welding, it is characterised in that
Every layer of weld seam of material to be welded is using the method for laser welding as described in any one in claims 1 to 3.
5. the method for laser welding of multilayer weld as claimed in claim 4, it is characterised in that every layer of the material to be welded
Between press the mode of the welding section subregion to carry out by the way of staggeredly.
6. the method for laser welding of multilayer weld as claimed in claim 5, it is characterised in that press three points of the welding section every time
One of region.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088687.4A CN106735901B (en) | 2016-11-30 | 2016-11-30 | A kind of method for laser welding of method for laser welding and multilayer weld |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088687.4A CN106735901B (en) | 2016-11-30 | 2016-11-30 | A kind of method for laser welding of method for laser welding and multilayer weld |
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| CN106735901A true CN106735901A (en) | 2017-05-31 |
| CN106735901B CN106735901B (en) | 2018-11-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108326419A (en) * | 2017-12-27 | 2018-07-27 | 大族激光科技产业集团股份有限公司 | A kind of high-speed welding method of sheet metal |
| CN112290341A (en) * | 2020-10-20 | 2021-01-29 | 南通德晋昌光电科技有限公司 | Environment-friendly processing method of bus bar |
| CN114824672A (en) * | 2022-03-30 | 2022-07-29 | 北京海博思创科技股份有限公司 | Preparation method of battery module and battery module |
| CN115008010A (en) * | 2022-06-30 | 2022-09-06 | 东莞市中麒光电技术有限公司 | Chip welding method and display module |
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| JP2014004619A (en) * | 2012-06-27 | 2014-01-16 | Panasonic Corp | Laser joining method and joining component |
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| JP5505369B2 (en) * | 2011-05-19 | 2014-05-28 | 新日鐵住金株式会社 | Laser welded joint with excellent joint strength and manufacturing method thereof |
| JP2014004619A (en) * | 2012-06-27 | 2014-01-16 | Panasonic Corp | Laser joining method and joining component |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326419A (en) * | 2017-12-27 | 2018-07-27 | 大族激光科技产业集团股份有限公司 | A kind of high-speed welding method of sheet metal |
| CN112290341A (en) * | 2020-10-20 | 2021-01-29 | 南通德晋昌光电科技有限公司 | Environment-friendly processing method of bus bar |
| CN114824672A (en) * | 2022-03-30 | 2022-07-29 | 北京海博思创科技股份有限公司 | Preparation method of battery module and battery module |
| CN115008010A (en) * | 2022-06-30 | 2022-09-06 | 东莞市中麒光电技术有限公司 | Chip welding method and display module |
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| CN106735901B (en) | 2018-11-13 |
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