CN107262929B - A kind of welding alignment device and the welding method based on the device - Google Patents
A kind of welding alignment device and the welding method based on the device Download PDFInfo
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- CN107262929B CN107262929B CN201710632566.XA CN201710632566A CN107262929B CN 107262929 B CN107262929 B CN 107262929B CN 201710632566 A CN201710632566 A CN 201710632566A CN 107262929 B CN107262929 B CN 107262929B
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- 238000003466 welding Methods 0.000 title claims abstract description 181
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000010169 landfilling Methods 0.000 description 6
- 238000002679 ablation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/244—Overlap seam welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
-
- 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
- B23K5/00—Gas flame welding
- B23K5/02—Seam welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K5/00—Gas flame welding
- B23K5/22—Auxiliary equipment, e.g. backings, guides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention relates to a kind of welding alignment device and based on the welding method of the device, welding alignment device includes component A, component B and driving unit B, and component B is mobile by driving unit B driving, opposed member A；Component A has an a contraposition area a and boot section c, component B has an a contraposition area b and boot section d, contraposition area a is plane, positioned at the right side of component A, contraposition area b is plane, positioned at the left side of component B, boot section c is located at the upper surface of component A, boot section d is located at the lower surface of component B, and boot section c is parallel to boot section d；The welding alignment device provides for welded workpiece to plane, guarantees that workpiece is welded according to the relative tertiary location after contraposition, aligning accuracy is high；It is pre-adjusted relative spacing, before welding to adapt to different welding procedures；The relative distance in two contraposition areas can be finely tuned in welding process, in real time with the adverse effect for overcoming workpiece shapes tolerance and/or workpiece to be thermally deformed.
Description
Technical field
The welding alignment device and welding method that the present invention relates to a kind of for metal or nonmetallic coiled sheet material welds,
Belong to welding technology field.
Background technique
The application of laser welding is more and more wider, and due to stainless sheet steel coiled strip thinner thickness, when welding is easily deformed bending,
And there is also form tolerances in cutting for coiled strip, and the welded gaps size of different location (spell by corresponding landfilling area, filler weldering
Weldering) or width (corresponding stitch welding) difference of weldment lap-joint it is larger, partial region weld failure, needs the later period to mend when causing welding
Welding is filled, finished product manufacturing schedule and processing quality are seriously affected.
The contraposition and positioning of plate sheet welding weld seam are main at present or rely on the experience of operator, with eyes differentiation pair
Standard is fixed thin plate to adjust welding position, then with clamp system by movement by hand, the disadvantage is that: 1, arbitrariness is also big, welding
Position difficulty is looked for, and positioning accuracy is poor, influences welding quality；2, the relative position between the clamp system of grabbing thin plates and the thin plate face of weld is not
It determines, causes weld seam when batch production inconsistent；3, the clamp system Edge Distance plate sheet welding back gauge of grabbing thin plates is big,
Since the thickness of plate is very thin, the temperature distortion of plate sheet welding position can not ensure the high quality and consistency of weld whole weld seam.
In addition, existing welding equipment is only applicable to single welding procedure, and often wrapped in the entire processing technology of part
Containing a variety of welding sequences, it is therefore desirable to which manufacturer purchases multiple devices, and running water line operates, and higher cost input is further
The slim profit for compressing manufacturer, is unfavorable for industry development.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and provide a kind of adjustable welded gaps size or weldment
The welding alignment device and corresponding welding method of the width of lap-joint adjust welded gaps size before welding or weldment are taken
The width at the place of connecing is to adapt to different welding procedures, and fine tuning welding alignment device, can make up because of coiled strip own form in welding process
Weld failure caused by tolerance.
Realize that technical solution used by the object of the invention is a kind of welding alignment device, including component A, component B and drive
Moving cell B, component B are located above component A, and component B is mobile by driving unit B driving, the upper and lower, left and right opposed member A；Institute
Stating component A has an a contraposition area b and boot section d with a contraposition area a and a boot section c, component B, described right
Position area a is plane, positioned at the right side of component A, and the contraposition area b is plane, positioned at the left side of component B, the boot section c
It is located at the lower surface of component B positioned at the upper surface of component A, boot section d, boot section c is parallel to boot section d.
Driving unit A is installed, driving unit A is located at the right side of component A, and contraposition area a passes through driving in the component A
Unit A driving.
It further include control unit, control unit controls the driving element in driving unit A and driving unit B.
Described control unit includes master controller, visual sensor and signal processor, and visual sensor passes through at signal
Reason device is connected to master controller.
The present invention also correspondence provides the welding method based on above-mentioned welding alignment device, includes the following steps:
(1) before welding, according to the relative position of the welding procedure adjustment means A of setting and component B, adjust contraposition area a and
The relative distance of area b is aligned, which is welded gaps width or weldment lap width；
(2) by workpiece C and workpiece D to be welded by welding alignment device contraposition, wherein the welding edge of workpiece C is adjacent to pair
Position area a, workpiece D welding edge be adjacent to contraposition area b, after contraposition use clamp workpiece C and workpiece D；
(3) workpiece C and workpiece D are welded according to scheduled welding procedure, particular content is to adjust the tip of welding gun to be located at
The front of alignment device is welded, workpiece C and workpiece D are persistently fed forward, by changing component A's and component B in welding process
The width of welded gaps size or weldment lap-joint is finely tuned in relative position in real time, until welding terminates.
The form tolerance of the welding edge of detection workpiece C and workpiece D in advance before welding in step (1), according to weldering in step (3)
The relative position of the form tolerance adjustment member A and component B of edge fit, so that the width of welded gaps size or weldment lap-joint begins
It is maintained in the setting range of setting welding procedure eventually.
The welded gaps size or weldment lap width for acquiring current place to be welded in step (3) in real time, according to the letter of acquisition
The relative position for ceasing adjustment member A and component B, so that the width of welded gaps size or weldment lap-joint remains at setting
In the setting range of welding procedure.
Welding gun is fixed by the installation of welding gun freedom degree regulating device, keep in welding process in step (3) welding gun relative to
Weld alignment device position it is constant, by welding gun freedom degree regulating device adjust tip soldering angle and/or tip with to
Spacing between welding workpiece.
As shown from the above technical solution, welding alignment device provided by the invention has a fixed component A and a position
Adjustable component B, component A and component B are set in welding respectively to two workpiece, that is, workpiece C to be welded and workpiece D offer pair
Plane (contraposition area is necessary for plane), so that the face of weld (or side) of workpiece C and workpiece D is adjacent to, therefore aligns area a and contraposition area b
Relative distance be welded gaps width or weldment lap width；Component B is driven by driving unit B, can opposed member A
Upper and lower, left and right are mobile, so as to adjust the relative position of the two according to the welding procedure of setting, by welded gaps width or weldering
Part lap width is adjusted to OK range, or makes two workpiece to be welded spatially single-contact or Multi-contact, because
This present invention is suitable for various melting welding and landfilling area welding procedure.
The adjusting of the relative distance relative position of contraposition area a and contraposition area b can also be fixed by aligning area b, adjust contraposition
The mode of area a is realized, in the present invention, driving unit A is installed in the right side of component A, and contraposition area a is driven by driving unit A,
Relative to the right side convex or concave of component A, to change contraposition area a and align the relative distance of area b.
Welding method provided by the invention adjusts welded gaps width or weldment lap width before welding, was welding
Welded gaps width or weldment lap width, i.e. contraposition area a and the relative distance for aligning area b are finely tuned in journey, wherein contraposition area a with
The adjusting before welding of contraposition area b relative distance is for example to use landfilling area according to specific welding procedure, then adjustment means A
It is separated from each other on upright projection direction with component B, contraposition area a and contraposition area b forward direction are formed and be spaced, and interval can accommodate centainly
Quantity fills silk；For another example stitch welding, then adjustment means A and component B partially overlaps on upright projection direction, contraposition area a and contraposition
Area b reversely forms interval, and interval meets the lap width requirement of stitch welding.
It aligns area a and aligns there are two types of the fine-tuning mode of area b relative distance in the welding process, one is pre- before welding
The form tolerance for first detecting the welding edge of workpiece C and workpiece D, according to the phase of the form tolerance adjustment member A and component B of welding edge
To position, the plate welding larger suitable for thickness, welding deformation is small, the second is passing through the video or figure that acquire place to be welded
Picture, the information acquired by signal processor processes, extracts the width of real-time welded gaps size or weldment lap-joint, by controlling
Device controls driving unit A or driving unit B, and the relative position of adjustment means A and component B can not only be overcome using the method
There are form tolerance unfavorable factors for workpiece, can also eliminate the influence of workpiece thermal deformation welding quality.
Compared with prior art, the present invention is provided for welded workpiece to plane by setting welding alignment device, so that
Workpiece can be welded according to the relative tertiary location after contraposition, and aligning accuracy is high；Two contraposition one, area fixations, another position
It sets adjustable, relative spacing can be pre-adjusted, before welding to adapt to different welding procedures；Two can be finely tuned in welding process in real time
The relative distance in a contraposition area, with the adverse effect for overcoming workpiece shapes tolerance and/or workpiece to be thermally deformed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the welding alignment device that embodiment 1 provides.
Fig. 2 is the structural schematic diagram for the welding alignment device that embodiment 2 provides.
Fig. 3 is the main view usage state diagram that welding alignment device provided by the invention is used for stitch welding.
Fig. 4 is the vertical view usage state diagram that welding alignment device provided by the invention is used for stitch welding.
Fig. 5 is the main view usage state diagram that welding alignment device provided by the invention is used for welding.
Fig. 6 is the vertical view usage state diagram that welding alignment device provided by the invention is used for welding.
Fig. 7 is the main view usage state diagram that welding alignment device provided by the invention is used for landfilling area.
Fig. 8 is the vertical view usage state diagram that welding alignment device provided by the invention is used for landfilling area.
Wherein, 1- component A, 11- align area a, and the boot section 12- c, 2- component B, 21- align area b, and the boot section 22- d, 3- drive
Moving cell A, 4- driving unit B, 5- workpiece C, 6- workpiece D.
Specific embodiment
The present invention is illustrated in detail with reference to the accompanying drawings and examples, the contents of the present invention are not limited to following
Embodiment.
Embodiment 1:
A kind of welding alignment device, structure is as shown in Figure 1, include component A1, component B2 and driving unit B4, component B2
Above component A1, component B2 is mobile by driving unit B4 driving, the upper and lower, left and right opposed member A1；Component A1 has
One contraposition area a11 and a boot section c12, component B2 have a contraposition area b21 and a boot section d22, boot section c12
Positioned at the upper surface of component A1, boot section d22 is located at the lower surface of component B2, and in the present embodiment, component A1 and component B2 are in
Cuboid, contraposition area a11 are plane, i.e., the entire right side of component A1 is contraposition area a11, and contraposition area b21 is similarly plane,
It is similarly horizontal plane that i.e. the entire left side of component B2, which is contraposition area b21, boot section c12 and boot section d22, and the two is mutual
In parallel, component B2 can be smoothly close to component A1.
Referring to Fig. 1, a kind of welding method based on above-mentioned welding alignment device includes the following steps:
(1) form tolerance for detecting the welding edge of workpiece C5 and workpiece D6 before welding first, according to the welding procedure of setting
The relative position of adjustment means A1 and component B2 adjust contraposition area a11 and align the relative distance of area b21, which is to weld
Connect gap width or weldment lap width, boot section c12 is adjacent to boot section d22 when adjusting, guarantees the stability of adjustment process；
(2) by workpiece C5 and workpiece D6 to be welded by welding alignment device contraposition, wherein the welding edge of workpiece C5 is pasted
Tight contraposition area a11, workpiece D6 welding edge be adjacent to contraposition area b21, clamp workpiece C5 and workpiece D6, fixture are used after contraposition
Using two groups of rotatable clip wheels, every group of clip wheel includes two, and two clip wheels are in a certain angle, and clip wheel clamps workpiece C5 and workpiece
D6, while the component being close to alignment device is applied to workpiece C5 and workpiece D6；
(3) workpiece C5 and workpiece D6 is welded according to scheduled welding procedure, particular content is the tip position for adjusting welding gun
In the front of welding alignment device, interval will not align welding with welding flame or laser between tip and welding alignment device
Device, which generates ablation, to be advisable, and passes through the soldering angle and/or tip of welding gun freedom degree regulating device adjusting tip and work to be welded
Spacing between part keeps in welding process welding gun constant relative to the position of welding alignment device, and workpiece C5 and workpiece D6 are held
It is continuous to feed, position of the component B2 relative to component A1 is changed according to the form tolerance of welding edge in welding process, adjusts weldering in real time
The width of gap size or weldment lap-joint is connect, so that the width of welded gaps size or weldment lap-joint remains at setting
In the setting range of welding procedure, until welding terminates.
Embodiment 2:
A kind of welding alignment device, structure is as shown in Fig. 2, include component A1, component B2, driving unit A3, driving list
First B4 and control unit, component B2 are located above component A1, component B2 is driven by driving unit B4, opposed member A1 is upper and lower,
Left and right movement；There is the component A1 contraposition area a11 and a boot section c12, component B2 to have a contraposition area b21
It is located at the upper surface of component A1 with a boot section d22, boot section c12, boot section d22 is located at the lower surface of component B2, driving
Unit A3 is located at the right side of component A1；
In the present embodiment, contraposition area a11 is plane, is driven by the driving unit A3 being located in the right side component A1, with
Protrusion or indent are in the right side of component A1；Contraposition area b21 is similarly plane, and the entire left side of component B2 is contraposition area
b21；Boot section c12 and boot section d22 are all made of clinoplain, and the two is parallel to each other, and guiding function is played in inclined surface, and component B2 can
It is smoothly close to component A1；
Described control unit includes master controller, visual sensor and signal processor, and visual sensor passes through at signal
Reason device is connected to master controller, the driving element in main controller controls driving unit A3 and driving unit B4.
Referring to fig. 2, a kind of welding method based on above-mentioned welding alignment device, includes the following steps:
(1) before welding, according to the relative position of the welding procedure adjustment means A1 of setting and component B2, contraposition area is adjusted
The relative distance of a11 and contraposition area b21, the distance as welded gaps width or weldment lap width, boot section c12 when adjusting
It is adjacent to boot section d22, guarantees the stability of adjustment process；
(2) by workpiece C5 and workpiece D6 to be welded by welding alignment device contraposition, wherein the welding edge of workpiece C5 is pasted
Tight contraposition area a11, workpiece D6 welding edge be adjacent to contraposition area b21, clamp workpiece C5 and workpiece D6, fixture are used after contraposition
Using existing welding fixture；
(3) workpiece C5 and workpiece D6 is welded according to scheduled welding procedure, particular content is the tip position for adjusting welding gun
In the front of welding alignment device, interval will not align welding with welding flame or laser between tip and welding alignment device
Device, which generates ablation, to be advisable, and keeps welding gun constant relative to the position of welding alignment device in welding process, workpiece C5 and workpiece
D6 is persistently fed, and acquires the welded gaps size or weldment overlap joint at current place to be welded in welding process in real time by visual sensor
Width, and by signal processor Real-time Feedback to master controller, master controller controls driving unit A3 according to the information of acquisition
And/or the position of driving unit B4, adjustment member B2 relative to component A1, welded gaps size or weldment lap-joint are adjusted in real time
Width so that the width of welded gaps size or weldment lap-joint remain at setting welding procedure setting range in,
Master controller passes through welding gun freedom degree regulating device simultaneously and adjusts between the soldering angle and/or tip and welded workpiece of tip
Spacing, guarantee welding uniformly, until welding terminate.
The different welding procedures such as landfilling area, welding or stitch welding, the welding provided below with embodiment 1 are provided
For alignment device, the concrete operation step of above-mentioned different welding procedures is described in detail:
1, stitch welding is carried out using welding alignment device of the invention:
Referring to Fig. 3 and Fig. 4, component A1 and component B2 are in welding respectively to two workpiece, that is, workpiece C5 to be welded and work
Part D6 offer, by driving unit B4 mobile member B2, makes plane so that the face of weld (or side) of workpiece C5 and workpiece D6 is adjacent to
It obtains component B2 to be located above component A1, and the two partially overlaps on upright projection direction, overlap width l1, the coincidence is wide
Degree is l1The as lap width of workpiece C5 and workpiece D6.
2, laser assembly solder is carried out using welding alignment device of the invention:
Referring to figs. 5 and 6, component A1 and component B2 is in welding respectively to two workpiece, that is, workpiece C5 to be welded and work
Part D6 offer, by driving unit B4 mobile member B2, makes plane so that the face of weld (or side) of workpiece C5 and workpiece D6 is adjacent to
Component B2 is located at the top component A1, and the two docks plane on upright projection direction, gap l2It is no more than
1mm, gap l2The as welded gaps of workpiece C5 and workpiece D6.
3, silk filling melting welding is carried out using welding alignment device of the invention:
Referring to figs. 7 and 8, component A1 and component B2 is in welding respectively to two workpiece, that is, workpiece C5 to be welded and work
Part D6 offer, by driving unit B4 mobile member B2, makes plane so that the face of weld (or side) of workpiece C5 and workpiece D6 is adjacent to
Component B2 is located at the top component A1, and the two is spaced upwardly of it plane in upright projection side, interval l3
The silk filling gap of as workpiece C5 and workpiece D6 are spaced l3Not less than 1 times of gage of wire.
Claims (8)
1. a kind of welding alignment device, it is characterised in that: including component A, component B and driving unit B, component B is located on component A
Side, component B are mobile by driving unit B driving, the upper and lower, left and right opposed member A；The component A have contraposition area a with
It is plane, positioned at the right side of component A that one boot section c, component B, which have an a contraposition area b and boot section d, the contraposition area a,
Side, the contraposition area b are plane, positioned at the left side of component B, and the boot section c is located at the upper surface of component A, boot section d
Positioned at the lower surface of component B, boot section c is parallel to boot section d.
2. welding alignment device according to claim 1, it is characterised in that: driving unit A is installed in the component A,
Driving unit A is located at the right side of component A, and contraposition area a is driven by driving unit A.
3. welding alignment device according to claim 2, it is characterised in that: further include control unit, control unit control
Driving element in driving unit A and driving unit B.
4. welding alignment device according to claim 3, it is characterised in that: described control unit includes master controller, view
Feel that sensor and signal processor, visual sensor are connected to master controller by signal processor.
5. a kind of based on the welding method for welding alignment device described in claim 1, which comprises the steps of:
(1) before welding, according to the relative position of the welding procedure adjustment means A of setting and component B, contraposition area a and contraposition are adjusted
The relative distance of area b, the distance are welded gaps width or weldment lap width；
(2) by workpiece C and workpiece D to be welded by welding alignment device contraposition, wherein the welding edge of workpiece C is adjacent to contraposition area
A, the welding edge of workpiece D is adjacent to contraposition area b, and clamp workpiece C and workpiece D is used after contraposition；
(3) workpiece C and workpiece D is welded according to scheduled welding procedure, particular content is to adjust the tip of welding gun positioned at welding
The front of alignment device, workpiece C and workpiece D are persistently fed forward, opposite with component B's by changing component A in welding process
The width of welded gaps size or weldment lap-joint is finely tuned in position in real time, until welding terminates.
6. welding method according to claim 5, it is characterised in that: detect workpiece C and work in step (1) before welding in advance
The form tolerance of the welding edge of part D, according to the opposite position of the form tolerance adjustment member A and component B of welding edge in step (3)
It sets, so that the width of welded gaps size or weldment lap-joint remains in the setting range of setting welding procedure.
7. welding method according to claim 5, it is characterised in that: acquire the weldering at current place to be welded in step (3) in real time
Gap size or weldment lap width are connect, according to the relative position of the information adjustment member A of acquisition and component B, so that between welding
The width of gap size or weldment lap-joint remains in the setting range of setting welding procedure.
8. welding method according to claim 5, it is characterised in that: welding gun is solid by the installation of welding gun freedom degree regulating device
It is fixed, it keeps welding gun constant relative to the position of welding alignment device in welding process in step (3), is adjusted by welding gun freedom degree
Device adjusts the spacing between the soldering angle and/or tip and welded workpiece of tip.
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| CN201710632566.XA CN107262929B (en) | 2017-07-28 | 2017-07-28 | A kind of welding alignment device and the welding method based on the device |
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| CN201710632566.XA CN107262929B (en) | 2017-07-28 | 2017-07-28 | A kind of welding alignment device and the welding method based on the device |
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| CN109158758A (en) * | 2018-10-11 | 2019-01-08 | 中国航空制造技术研究院 | A kind of adaptive regulation device in barrel components longitudinal joint laser welding gap and method |
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| US20060011592A1 (en) * | 2004-07-14 | 2006-01-19 | Pei-Chung Wang | Laser welding control |
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| EP1629927A1 (en) * | 2004-08-30 | 2006-03-01 | Ford Global Technologies, LLC | Method for welding a first and a second part with an hybrid welding process based on resistance seam welding followed by seam laser welding |
| CN206047310U (en) * | 2016-09-22 | 2017-03-29 | 中车长春轨道客车股份有限公司 | For ensureing that inner chamber full penetration weld keeps for the welding auxiliary mould of fixed gap value |
| CN106312316A (en) * | 2016-10-20 | 2017-01-11 | 中车长春轨道客车股份有限公司 | Single-side-welding and three-side-forming welding method for stainless steel vehicle body external wallboards |
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