CN207255443U - A kind of welding gun - Google Patents
A kind of welding gun Download PDFInfo
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- CN207255443U CN207255443U CN201720973501.7U CN201720973501U CN207255443U CN 207255443 U CN207255443 U CN 207255443U CN 201720973501 U CN201720973501 U CN 201720973501U CN 207255443 U CN207255443 U CN 207255443U
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- pipette tips
- welding gun
- baffle
- conservancy diversion
- water conservancy
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Abstract
This application discloses a kind of welding gun, including pipette tips and cable, pipette tips include pipette tips body (11), baffle (12), tungsten electrode folder (13), nozzle (14), water conservancy diversion housing (15) and seal wire elbow (16)；Pipette tips body (11) is internally provided with one or more first air flues (11A), water conservancy diversion housing (15) is internally provided with one or more second air flues (15A), and baffle (12) is provided with one or more stomatas (12A)；Nozzle (14) is engaged with baffle (12), and baffle (12) is engaged with water conservancy diversion housing (15), and water conservancy diversion housing (15) is engaged with pipette tips body (11)；Tungsten electrode folder (13) is connected with baffle (12), and nozzle (14) surrounds at least a portion of tungsten electrode folder (13) and baffle (12)；Seal wire elbow (16) is hollow and is engaged with pipette tips body (11).The automatic TIG welding that the welding gun of the application is suitable for the long tube socket outside fillet (weld) of intensive small tube socket and top tape elbow connects.
Description
Technical field
This application involves welding field, more particularly to a kind of welding gun.
Background technology
Being welded on for small tube socket outside fillet (weld) has high generality in actual production, such as boiler, pressure vessel, oil
The industries such as work, shipbuilding, and other industrial circles.
For the less intensive small tube socket workpiece of pitch and length be longer or the long tube socket of top tape elbow, such as boiler
The welding of small tube socket in header, it is always a problem to realize small tube socket automatic welding.With boiler product parameter not
Disconnected lifting, boiler header is also continuously improved with material grade, for high parameter boiler, 12Cr1MoVG and above material such as P91,
P92 etc. has become the main material selection of header product.Since the small tube socket quantity of header product is big and dense distribution, small tube socket are axial
Spacing all very littles between radial direction, welding operating space is narrow, and accessibility is poor.Quality of parent material grade and welding structure complexity
Welding difficulty is added, the guarantee of welding quality proposes higher requirement.At present, small tube socket fillet welding in domestic boiler industry
The seam overwhelming majority uses manual welding, and welding job amount is big, and labor intensity is big, and welding quality is had a great influence by human factor,
Quality is not easy to ensure, production efficiency is relatively low.In addition, the major influence factors in boiler header service life are exactly the intensity of small Nozzle joint
It is difficult to ensure that.Due to being limited be subject to header tube socket product structure, it is difficult to which the good complete penetraction and fusion in welding of and stress condition big using intensity connects
Capitiform formula (complete penetraction and fusion in welding connector backing welding can only use TIG weld), the instead joint form of non-through welding and by increasing small tube socket
Pipe wall thickness meets the requirement of the use intensity and life-span of boiler product with foot welding height is increased.This both produced huge material and
Manually waste again there are great hidden danger of quality, become the key for restricting boiler for producing and service life.
At present, in the production of the products such as the header with similar welding point, pipeline, container, it is desirable to using complete penetraction and fusion in welding
The overwhelming majority of joint form is welded using manual TIG bottoming, remaining is all to use non-through welding joint form.With the epoch
Development and the progress of technology, certainly will put forward higher requirements the welding of similar tube socket with being welded as the relevant industries of means, with
Improve product quality and service life.
The pact that the existing exterior silk filling formula TIG automatic welding guns of in the market are subject to own vol larger and welding zone position is narrow
Beam, can not realize that intensive tubule seat is located at the welding operation of operator rear surface regions.Even the larger non-dense set type of pitch
The welding of long tube socket product, due to most of high temperature for needing 100-200 DEG C of preheating, and operator needs very close workpiece
Manual TIG welding gun can be used to reach small tube socket back side welding region, and need to fill silk manually, operation difficulty is very big.Cause
This is, it is necessary to the welding gun of a kind of automatic bottoming of achievable TIG, filling and cover welding.
Utility model content
An object of the application is to provide a kind of new TIG welding guns, it can realize the automatic bottoming of TIG, filling and cosmetic welding
Connect, weld, increase substantially suitable for the automatic complete penetraction and fusion in welding of the long tube socket outside fillet (weld) of intensive small tube socket and top tape elbow
The degree of automation, production efficiency and product manufacturing quality.
On the one hand, an object of the application is realized by a kind of welding gun, which includes pipette tips and cable, and the pipette tips include rifle
Head body, baffle, tungsten electrode folder, nozzle, water conservancy diversion housing and seal wire elbow；The pipette tips body interior is provided with one or more
First air flue, the water conservancy diversion housing are internally provided with one or more second air flues, and the baffle is provided with one or more
Stomata；The nozzle is engaged with the baffle, and the baffle and the baffle seated connection close, the water conservancy diversion housing with it is described
Pipette tips body engagement so that the gas come out from first air flue enters the nozzle through second air flue and the stomata
Intracavitary；The tungsten electrode folder is connected with the baffle, and the nozzle surrounds at least the one of the tungsten electrode folder and the baffle
Part；The seal wire elbow it is hollow and with the pipette tips body engagement.
According to the one side of the application welding gun, the anterior of the pipette tips body is engaged with the seal wire elbow, the pipette tips
The bottom of body is closed with the baffle seated connection, baffle, the nozzle and the water conservancy diversion described in the seal wire elbow semi-surrounding
Housing.
According to the one side of the application welding gun, the front end of the seal wire elbow is provided with wire guiding nipple, and the pipette tips are also wrapped
Wire guiding nipple stent is included, the wire guiding nipple stent is connected with the wire guiding nipple and the water conservancy diversion housing respectively.
According to the one side of the application welding gun, the cable includes wire leading pipe, casing, cable and cable jacket, the set
Pipe surrounds the wire leading pipe, and the cable jacket surrounds described sleeve pipe, and the cable is arranged on outside described sleeve pipe and the cable
Between set, there is gap between the wire leading pipe and described sleeve pipe, be additionally provided with out between described sleeve pipe and the cable jacket
Water pipe.
According to the one side of the application welding gun, the wire leading pipe includes the first seal wire pipeline section and the second seal wire being connected to each other
Pipeline section, wherein the diameter of the first seal wire pipeline section is less than the diameter of the second seal wire pipeline section.
According to the one side of the application welding gun, the cable is connected by swing component with the pipette tips, the swing component bag
Include and swing mandrel and swing mandrel overcoat, the swing mandrel is rotatably inserted into the swing mandrel overcoat, the pendulum
The perforate of the endoporus of moving mandrel and the swing mandrel overcoat forms the passage for being used for wire leading pipe and passing through, the swing mandrel overcoat
With the pipette tips body engagement, the cable jacket is sleeved on the protuberance of the swing mandrel.
According to the another aspect of the application welding gun, the fixation with through hole is additionally provided with the endoporus for swinging mandrel
Silk seat, the end sleeve of described sleeve pipe is on the fixed silk seat.
According to the one side of the application welding gun, the pipette tips body is provided with external splines, and the swing mandrel overcoat is set
There is spline, the external splines coordinates with the spline.
According to the one side of the application welding gun, the pipette tips body and it is described swing mandrel overcoat composition surface be provided with it is close
Groove is sealed, seal washer is provided with the sealed groove.
According to the one side of the application welding gun, the swing mandrel overcoat, the pipette tips body, the water conservancy diversion housing, institute
State baffle and tungsten electrode folder is electrically connected each other.
On the other hand, the utility model provides a kind of pipette tips, and the pipette tips include pipette tips body, baffle, tungsten electrode folder, spray
Mouth, water conservancy diversion housing and seal wire elbow；The pipette tips body interior is provided with one or more first air flues, in the water conservancy diversion housing
Portion is provided with one or more second air flues, and the baffle is provided with one or more stomatas；The nozzle and the water conservancy diversion
Body engages, and the baffle and the baffle seated connection close, the water conservancy diversion housing and the pipette tips body engagement so that from described
The gas that first air flue comes out enters the intracavitary of the nozzle through second air flue and the stomata；Tungsten electrode folder with it is described
Baffle connects, and the nozzle surrounds at least a portion of the tungsten electrode folder and the baffle；The seal wire elbow is hollow simultaneously
With the pipette tips body engagement.
The welding gun of the utility model can coordinate with automatic rotary bonding machine, be connect for small tube socket outside fillet (weld) automatic TIG welding,
Under the drive of bonding machine, welding gun can do circumgyration campaign around small tube socket, carry out small R windings so that be welded in small Space Rotating
TIG filler wire weldings can be realized when connecing operating mode, overcome the limitation of the prior art, its main beneficial effect and advantage are as follows：
1) use the lance body structure of special designing, collection wire feed, supply gas, three big major function of power transmission it is compact whole into one
Body；
2) spline/spline slot structure that welding gun pipette tips use, had not only facilitated the adjustment of welding torch position, but also easy disassembly and weldering
Silk, the replacement of tungsten electrode, it is highly practical；
3) since gage of wire is smaller, poor rigidity, fed distance are limited, the welding gun of the utility model is even in cable winds
At >=400 °, can still realize welding wire (being included in cable) stablizes conveying；
4) it is suitable for outside diameter 0.9-1.2mm solid core welding wires；
5) welding gun pipette tips position-adjustable, to adapt to different welding positions.
Brief description of the drawings
The utility model will more completely be illustrated below with reference to attached drawing and with reference to preferred embodiment.
Fig. 1 is the sectional view according to the welding gun of one embodiment of the utility model.
Fig. 2A and Fig. 2 B are respectively the pipette tips body of welding gun shown in Fig. 1 and the front view and sectional view of water conservancy diversion housing.
Fig. 3 A and Fig. 3 B are respectively the sectional view and top view of the nozzle of welding gun shown in Fig. 1.
Fig. 4 A and Fig. 4 B are respectively the front view and sectional view of the tungsten electrode folder of welding gun shown in Fig. 1.
Fig. 5 A and Fig. 5 B are respectively the top view and sectional view of the baffle of welding gun shown in Fig. 1.
Fig. 6 A and Fig. 6 B are respectively the front view and sectional view of the swing mandrel of welding gun shown in Fig. 1.
Fig. 7 A and Fig. 7 B are respectively the sectional view and left view of the swing mandrel overcoat of welding gun shown in Fig. 1.
Fig. 8 A and Fig. 8 B are respectively the pipette tips body of welding gun shown in Fig. 1 and swing the schematic cross-sectional that mandrel overcoat coordinates
Figure.
For clarity, these attached drawings are figure that is schematic and simplifying, they are only gived for understanding that this practicality is new
Details necessary to type, and omit other details.
Embodiment
By detailed description given below, the scope of application of the utility model will be evident.It will be appreciated, however, that
While being described in detail and specific example shows the preferred embodiment in the utility model, they are provided only for illustration purpose.
Fig. 1 shows the schematic diagram of the welding gun according to one embodiment of the utility model.The welding gun includes pipette tips and cable, rifle
Head is connected by swing component with cable.Pipette tips include pipette tips body 11, baffle 12, tungsten electrode folder 13, nozzle 14, water conservancy diversion housing
15th, seal wire elbow 16 and wire guiding nipple 18.Pipette tips body 11 is internally provided with the first air flue 11A of one or more, water conservancy diversion housing 15
The second air flue 15A of one or more is internally provided with, as shown in Figure 2A and 2B.Baffle 12 is circle and is provided with multiple gas
Hole 12A, as shown in Figure 5A and 5B.Tungsten electrode folder 13 is circular hollow shape, and one end has multiple flutings and top is wedge surface shape,
As shown in Figure 4A and 4B.Tungsten electrode folder 13 is used to clamp tungsten electrode 13A.Nozzle 14 is circular hollow shape, such as institute in Fig. 3 A and 3B
Show.The bottom of pipette tips body 11 is engaged with water conservancy diversion housing 15, and water conservancy diversion housing 15 is engaged with baffle 12, baffle 12 and nozzle 14
Engagement so that enter the intracavitary of nozzle 14, pipette tips by the second air flue 15A and stomata 12A from the gas that the first air flue 11A comes out
Body 11, water conservancy diversion housing 15, baffle 12 and tungsten electrode folder 13 are electrically connected each other.Tungsten electrode folder 13 and 12 grafting of baffle, nozzle 14
Surround tungsten electrode folder 13 and baffle 12.Seal wire elbow 16 has the passage for allowing welding wire to pass through, one end of seal wire elbow 16 and rifle
Front portion (end that direction is sent into away from welding wire) engagement of head body 11, wire guiding nipple 18 are arranged on the other end of seal wire elbow 16
(front end), 16 semi-surrounding baffle 12 of seal wire elbow, nozzle 14 and water conservancy diversion housing 15 so that the welding wire sent out from cable passes through
Pipette tips body 11, seal wire elbow 16 enter wire guiding nipple 18 and stretch out, and finally send to the welding region below tungsten electrode 13A.
In one embodiment, pipette tips further include wire guiding nipple stent 17, wire guiding nipple stent 17 respectively with wire guiding nipple 18 and water conservancy diversion
Housing 15 connects, for adjusting the position of wire guiding nipple 18 and wire guiding nipple 18 being fixed on certain position.
In one embodiment, cable includes wire leading pipe 21, casing 22, cable 23 and cable jacket 24, and casing 22 is surrounded and led
Fiber tube 21, cable jacket 24 surround casing 22, and cable 23 is arranged between casing 22 and cable jacket 24, wire leading pipe 21 and casing
There is gap between 22, outlet pipe 25 is additionally provided between casing 22 and cable jacket 24.Wire leading pipe 21 is thin by what is be connected to each other
Engineering plastics pipeline section 21A and unskilled workman's engineering plastics pipeline section 21B is formed.
Cable is connected by swing component with pipette tips.Specifically, one end of cable and swing component connects, the other end of swing component
Engaged with the rear portion of pipette tips body 11.In one embodiment, swing component includes swinging mandrel 31 and swings mandrel overcoat 32.Figure
6A-7B respectively illustrates the illustrative examples for swinging mandrel 31 and swinging mandrel overcoat 32.Mandrel 31 is swung rotationally to insert
Enter and swinging three conductive realization in mandrel overcoat 32, swing, air seal functions, swing endoporus 31A and the swing of mandrel 31
The perforate 32A of mandrel overcoat 32, which is formed, is used for the passage that wire leading pipe 21 passes through.Swing mandrel overcoat 32 and be provided with spline 32B,
Pipette tips body 11 is provided with external splines 11B, as shown in figs. 8 a and 8b.External splines 11B and spline 32B coordinates so that swinging mandrel
Overcoat 32 is engaged with pipette tips body 11, and pipette tips body 11 is provided with sealed groove 11C with swinging the composition surface of mandrel overcoat 32, close
Seal washer is provided with envelope groove 11C, so that pipette tips are connected in a manner of inserting soon with swing component, convenient disassembly and realization
Conductive and contact surface hermetic seal, by adjusting the swing angle for swinging mandrel overcoat 32, it can be achieved that welding wire is directed toward the adjusting of position.
When above-mentioned cable is connected with swinging mandrel, cable jacket 24 is tightly sleeved on the protuberance for swinging mandrel 31, electricity
Cable 23 is welded on the protuberance for swinging mandrel 31.Swing in the endoporus of mandrel 31 and be provided with the fixation silk seat with through hole
31B, the end sleeve of casing 22 is on fixed silk seat 31B so that the space between cable jacket 24 and casing 22 is with swinging mandrel
Water-stop is formed between 31, water can not enter swing mandrel overcoat 32 and pipette tips by swinging mandrel 31.
When in use, water is full of between cable jacket 24 and casing 22, water cooling is carried out to cable 23, recirculated water passes through water outlet
Pipe 25 is flowed out from cable.The embodiment of the utility model uses water-cooling pattern, can also use in other embodiments other cold
But mode.The conveying protection gas between casing 22 and wire leading pipe 21, through hole, swing core of the protection gas by fixed silk seat 31B
The perforate of outer shaft sleeve 32 is entered in the air flue 11A of pipette tips body 11 and the air flue 15A of water conservancy diversion housing 15, is then fed into baffle
The cavity that 12 stomata 12A eventually passes through nozzle 14 wraps the effect that tungsten electrode 13A reaches protection electric arc.Swing mandrel overcoat
32nd, pipette tips body 11, water conservancy diversion housing 15, baffle 12 and tungsten electrode folder 13 are ferromagnetism steel plate, and electric current is by swinging outside mandrel
Set 32, pipette tips body 11, water conservancy diversion housing 15, baffle 12, tungsten electrode folder 13 produce electric arc eventually through tungsten electrode 13A.Wire leading pipe 21
Passed through from fixed silk seat 31B, swing mandrel 31 and swing mandrel overcoat 32 at pipette tips.Welding wire from wire leading pipe 21 pass through into
Enter (such as straight hole) channel of welding wire on pipette tips body 11, subsequently into seal wire elbow 16, through seal wire elbow 16 and wire guiding nipple 18
Stretched out from wire guiding nipple 18 and be bent downwardly more than the 90 ° arc zones being delivered to below tungsten electrode 13A, carry out silk filling TIG weld.Welding gun
Under such as drive of bonding machine disclosed in Chinese patent ZL 201620948214.6, circumgyration campaign can be done around small tube socket,
So as to realize automatic TIG complete penetraction and fusion in weldings welding in small tube socket outside fillet (weld) circumference, production efficiency can be not only improved, but also product matter can be improved
Amount and service life.
Material, intensity and the diameter of bore of wire leading pipe 21 can make choice as needed.In embodiment, it is thin using leading portion
The combining form of engineering plastics pipe 21A and the thick engineering plastics pipe 21B of back segment, the internal diameter of engineering plastics pipe are bigger 0.2- than welding wire outside diameter
The scope of 0.3mm, to reduce bending of the welding wire in seal wire pipe orifice, so as to increase the rigidity for overcoming transporting resistance.Engineering plastic
The outside diameter of expects pipe section 21A can be more than or equal to 4mm, and the outside diameter of engineering plastics pipeline section 21B can be more than or equal to 5mm, its tensile strength is big
In the unstability intensity of welding wire, ensure that welding wire conveying strength is sufficiently large and plastic tube will not be stretched.
Unless explicitly stated otherwise, singulative as used herein " one ", "the", which include plural reference, (has " at least one "
The meaning).It will be further understood that terminology used herein " having ", " comprising " and/or "comprising" show in the presence of described
Feature, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, step, behaviour
Work, element, component and/or its combination.Term "and/or" as used in this includes one or more relevant items enumerated
Any and all combination.
Some preferred embodiments are in explanation made above, it should be emphasized, however, that the utility model does not limit to
In these embodiments, but it can realize that other embodiment is not with the other embodiment in the utility model subject area
Necessarily include all component parts of the embodiment.
Claims (10)
1. a kind of welding gun, including pipette tips and cable, it is characterised in that the pipette tips include pipette tips body (11), baffle (12),
Tungsten electrode folder (13), nozzle (14), water conservancy diversion housing (15) and seal wire elbow (16)；The pipette tips body (11) is internally provided with one
Or multiple first air flues (11A), the water conservancy diversion housing (15) is internally provided with one or more second air flues (15A), described to lead
Fluid (12) is provided with one or more stomatas (12A)；The nozzle (14) engages with the baffle (12), the baffle
(12) engaged with the water conservancy diversion housing (15), the water conservancy diversion housing (15) engages with the pipette tips body (11) so that from described
The gas that first air flue (11A) comes out enters the chamber of the nozzle (14) through second air flue (15A) and the stomata (12A)
It is interior；Tungsten electrode folder (13) be connected with the baffle (12), and nozzle (14) encirclement tungsten electrode presss from both sides (13) and described leads
At least a portion of fluid (12)；The seal wire elbow (16) is hollow and is engaged with the pipette tips body (11).
2. welding gun according to claim 1, it is characterised in that the anterior and seal wire elbow of the pipette tips body (11)
(16) engage, the bottom of the pipette tips body (11) is engaged with the water conservancy diversion housing (15), seal wire elbow (16) semi-surrounding
The baffle (12), the nozzle (14) and the water conservancy diversion housing (15).
3. welding gun according to claim 1, it is characterised in that the front end of the seal wire elbow (16) is provided with wire guiding nipple
(18), and the pipette tips further include wire guiding nipple stent (17), the wire guiding nipple stent (17) respectively with the wire guiding nipple (18) and
Water conservancy diversion housing (15) connection.
4. welding gun according to claim 1, it is characterised in that the cable includes wire leading pipe (21), casing (22), cable
(23) and cable jacket (24), described sleeve pipe (22) surround the wire leading pipe (21), and the cable jacket (24) surrounds the set
Manage (22), the cable (23) is arranged between described sleeve pipe (22) and the cable jacket (24), the wire leading pipe (21) and
There is gap between described sleeve pipe (22), outlet pipe is additionally provided between described sleeve pipe (22) and the cable jacket (24)
(25)。
5. welding gun according to claim 4, it is characterised in that the wire leading pipe (21) includes the first seal wire being connected to each other
Pipeline section (21A) and the second seal wire pipeline section (21B), wherein the diameter of the first seal wire pipeline section (21A) is less than second seal wire
The diameter of pipeline section (21B).
6. welding gun according to claim 4, it is characterised in that the cable is connected by swing component with the pipette tips, institute
Stating swing component includes swinging mandrel (31) and swings mandrel overcoat (32), and the swing mandrel (31) is rotatably inserted into described
Swing in mandrel overcoat (32), the endoporus (31A) for swinging mandrel (31) and the perforate of the swing mandrel overcoat (32)
(32A), which is formed, is used for the passage that wire leading pipe (21) passes through, and the swing mandrel overcoat (32) engages with the pipette tips body (11),
The cable jacket (24) is sleeved on the protuberance of the swing mandrel (31).
7. welding gun according to claim 6, it is characterised in that being additionally provided with the endoporus for swinging mandrel (31) has
The fixation silk seat (31B) of through hole, the end sleeve of described sleeve pipe (22) is on the fixed silk seat (31B).
8. welding gun according to claim 6, it is characterised in that the pipette tips body (11) is provided with external splines (11B), institute
State swing mandrel overcoat (32) and be provided with spline (32B), the external splines (11B) coordinates with the spline (32B).
9. welding gun according to claim 6, it is characterised in that the pipette tips body (11) and the swing mandrel overcoat
(32) composition surface is provided with sealed groove (11C), and seal washer is provided with the sealed groove (11C).
10. welding gun according to claim 6, it is characterised in that the swing mandrel overcoat (32), the pipette tips body
(11), the water conservancy diversion housing (15), the baffle (12) and tungsten electrode folder (13) are electrically connected each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720973501.7U CN207255443U (en) | 2017-08-04 | 2017-08-04 | A kind of welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720973501.7U CN207255443U (en) | 2017-08-04 | 2017-08-04 | A kind of welding gun |
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| Publication Number | Publication Date |
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| CN207255443U true CN207255443U (en) | 2018-04-20 |
Family
ID=61924580
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677125A (en) * | 2018-05-22 | 2018-10-19 | 张家港清研再制造产业研究院有限公司 | A kind of electric arc endoporus spray gun that endoporus vertically sprays |
| CN109317792A (en) * | 2018-11-20 | 2019-02-12 | 江苏科技大学 | The welding wire guider of angle adjustable and its technologic application is welded in thin plate brass |
| CN109382570A (en) * | 2017-08-04 | 2019-02-26 | 北京文源同创科技有限公司 | A kind of welding gun |
-
2017
- 2017-08-04 CN CN201720973501.7U patent/CN207255443U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382570A (en) * | 2017-08-04 | 2019-02-26 | 北京文源同创科技有限公司 | A kind of welding gun |
| CN108677125A (en) * | 2018-05-22 | 2018-10-19 | 张家港清研再制造产业研究院有限公司 | A kind of electric arc endoporus spray gun that endoporus vertically sprays |
| CN108677125B (en) * | 2018-05-22 | 2020-03-24 | 张家港清研再制造产业研究院有限公司 | Electric arc inner hole spray gun for vertically spraying inner hole |
| CN109317792A (en) * | 2018-11-20 | 2019-02-12 | 江苏科技大学 | The welding wire guider of angle adjustable and its technologic application is welded in thin plate brass |
| CN109317792B (en) * | 2018-11-20 | 2021-02-26 | 江苏科技大学 | Angle-adjustable welding wire guider and application thereof in thin plate brass welding process |
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