CN206981938U - Split type induction brazing device - Google Patents
Split type induction brazing device Download PDFInfo
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- CN206981938U CN206981938U CN201720842605.4U CN201720842605U CN206981938U CN 206981938 U CN206981938 U CN 206981938U CN 201720842605 U CN201720842605 U CN 201720842605U CN 206981938 U CN206981938 U CN 206981938U
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- 230000006698 induction Effects 0.000 title claims abstract description 165
- 238000005219 brazing Methods 0.000 title claims abstract description 44
- 238000003466 welding Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims 1
- 238000005476 soldering Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 210000001503 joint Anatomy 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000028882 split hand Diseases 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- General Induction Heating (AREA)
Abstract
Split type induction brazing device provided by the utility model, using the split type inductor for including the first induction coil and the second induction coil, by moving parts control the first induction coil and the second induction coil away from when, a larger space can be formed for joint to be welded to pass through, after joint to be welded is positioned, first induction coil is moved using moving parts and the second induction coil is close to each other but do not contact, the i.e. available structure similar to circular inductor, the structure for being close to round inductor surrounds joint to be welded, welding point is treated afterwards carries out soldering.Inductor split in the program, two induction coils do not contact therefore do not influence the stability of its output.It is additionally, since two induction coils finally to may make up such as the structure of circular inductor, joint to be welded is surrounded, therefore can reach the effect very close with circular inductor, has that heating uniformity is good, efficiency high, the high advantage of welding quality.
Description
Technical field
It the utility model is related to induction brazing technical field, and in particular to a kind of split type induction brazing device.
Background technology
Induction brazing is that the metal works for needing to weld are placed in induction coil, leads to high-frequency alternating current for induction coil,
Induction field is produced, generation induced electromotive force is coupled in surface of workpiece and forms inductive loop, sent out by inductive loop
Heat, solder is provided about in welding position, until heating temp welds when reaching brazing filler metal melts temperature, induction brazing is mesh
The heating welding manner of most clean environment firendly on former world.
At present, the induction brazing mode having been known, all it is to use fork-shaped induction coil 11 as shown in Figure 1a, will be to be welded
The joint 12 connect is placed in fork-shaped inductor 11.Obviously, there is larger opening in fork-shaped inductor, can there is leakage near opening
Magnetic phenomenon, cause to heat uneven and less efficient, poor welding quality to metal joint in welding process.Another induction brazing
Mode is to use circular inductor, and as shown in Figure 1 b, joint 12 is located inside circular inductor 13, and circular inductor will can connect
Head all surrounds, and heating uniformity is good.Circular inductor is typically all attached using Hafu-type connected mode, this connection side
Contact surface 14 as shown in Figure 1 b occurs in formula, and contact surface position may produce loose contact, exports unstable ask
Topic.Moreover, generally weld does not allow inductor to be penetrated from two, cause circular inductor in application
There are many limitations.
The content of the invention
The technical problems to be solved in the utility model is to weld matter present in induction brazing device of the prior art
Measure the problem of poor or poor for applicability.
Therefore, the utility model provides a kind of split type induction brazing device, including：
Installs fixture；
The output end of transformer, its input and heating power supply is connected to receive input energy, and its output includes first
Road and the second branch road；
Split type inductor, including the first induction coil and the second induction coil, first induction coil and described
Circular inductor is can obtain after the splicing of two induction coils；The input of first induction coil and the output of the tie point
End connection；The input of second induction coil is connected with the output end of second branch road；
One or two moving parts, the fixing end of the moving parts are fixedly connected with the installs fixture, mobile terminal
It is connected with first induction coil or second induction coil, the mobile terminal movement makes first induction coil and institute
It is remote or close to state the second induction coil.
Alternatively, in above-mentioned split type induction brazing device, the installs fixture includes first with first through hole
Supporting part and the second supporting part with the second through hole；
First induction coil is fixed in the installs fixture, the tie point run through the first through hole after with
The input connection of first induction coil；
Described device includes a moving parts, and the fixing end of the moving parts is arranged at the interior of second through hole
On wall, mobile terminal is connected with second induction coil, and second branch road is felt after running through second through hole with described second
The input of coil is answered to connect.
Alternatively, in above-mentioned split type induction brazing device, the installs fixture includes first with first through hole
Supporting part and the second supporting part with the second through hole；
Described device includes two moving parts, wherein：
The fixing end of one moving parts is arranged on the inwall of the first through hole, mobile terminal and first line of induction
Circle connection, the tie point are connected after running through the first through hole with the input of first induction coil；
The fixing end of another moving parts is arranged on the inwall of second through hole, mobile terminal and the described second sensing
Coil is connected, and second branch road is connected after running through second through hole with the input of second induction coil.
Alternatively, in above-mentioned split type induction brazing device, in addition to：
Hand-held ring, the hand-held ring top are provided with hanging part；
First supporting part and second supporting part are individually fixed on the inside of the hand-held ring.
Alternatively, in above-mentioned split type induction brazing device, the hanging part is the annulus passed through suitable for steel wire；
Along the circumferential direction it is molded fluted on the hand-held ring outer wall, the annulus is embedded in the groove can be along described
Groove slides.
Alternatively, in above-mentioned split type induction brazing device, in addition to：
Wire feeding head, it is arranged above first induction coil in induction range, is fixedly connected with the installs fixture, led to
The filament mouth for crossing wire leading pipe and automatic wire feeder connects.
Alternatively, in above-mentioned split type induction brazing device, the wire feeding head is by ceramic material or silicon nitride material system
It is standby to obtain.
Alternatively, in above-mentioned split type induction brazing device, in addition to：
Cylindrical type encoder, first supporting part or the second supporting part inwall are arranged at, welding wire is through the automatic feeding
The cylinder of the cylindrical type encoder is wound after the filament mouth of machine, is extended to afterwards in the wire leading pipe.
Alternatively, in above-mentioned split type induction brazing device, the moving parts is drive cylinder.
Alternatively, in above-mentioned split type induction brazing device, first induction coil and second induction coil
It is semicircle induction coil.
Such scheme provided by the utility model, compared with prior art, at least have the advantages that：
(1) in split type induction brazing device provided by the utility model, split type inductor is employed, therein
One induction coil and the second induction coil can be formed and circular inductor identical structure when docking.Controlled by moving parts
First induction coil and the second induction coil away from when, a larger space can be formed for joint to be welded by that will treat
After welding point positioning, the first induction coil is moved using moving parts and the second induction coil is close to each other but do not contact, i.e.,
The available structure similar to circular inductor, the structure surround joint to be welded, treat welding point afterwards and carry out soldering.
Inductor split in the program, two induction coils do not contact therefore do not influence the stability of its output.It is additionally, since two senses
Answer coil finally to may make up such as the structure of circular inductor, joint to be welded is surrounded, therefore can reach non-with circular inductor
Very close to effect, have heating uniformity it is good, efficiency high, the high advantage of welding quality.
(2), can due to using split type inductor in split type induction brazing device provided by the utility model
Concrete structure and size according to joint to be welded carry out adaptability design to the size of inductor, adapt it to various solderings
Application scenarios, variously-shaped, various sizes joints to be welded are welded.
Brief description of the drawings
Fig. 1 a are the schematic diagram welded in the prior art using fork-shaped inductor butt joint；
Fig. 1 b are the schematic diagram welded in the prior art using circular inductor butt joint；
Fig. 2 a are the second induction coil in split type induction brazing device in the utility model one embodiment away from first
The schematic diagram of induction coil；
Fig. 2 b are the second induction coil in split type induction brazing device in the utility model one embodiment close to first
The schematic diagram of induction coil；
Fig. 2 c are the schematic diagram that split type induction brazing device butt joint is welded in the utility model one embodiment；
Fig. 2 d are the second induction coil in split type induction brazing device in the utility model one embodiment away from first
The schematic diagram of induction coil；
Fig. 3 is the diagrammatic cross-section of installs fixture described in the utility model one embodiment；
Fig. 4 a are the schematic diagram of split type induction brazing device in the utility model another embodiment；
Fig. 4 b are the left view of split type induction brazing device shown in Fig. 3.
Embodiment
The technical solution of the utility model described further below, in the following description, embodiment is defined in more detail
Different aspect.The various aspects so limited can combine with any other one side or many aspects, unless clearly referring to
Go out and not can be combined.It can be considered as excellent with other one or more to be especially considered as preferable or favourable any feature
Select or favourable feature is combined.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the following description
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two component internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
In the following description, term " first ", " second ", " the 3rd " etc. are used between similar key element carry out
Difference, and be not necessarily and describe specific order or order temporally.It is appreciated that these terms so used are suitable
It is interchangeable in the environment of so that the implementation of theme described here is, for example, can be different with the order illustrated from those
Order or operated with other order described here.
Embodiment 1
The present embodiment provides a kind of split type induction brazing device, as shown in figures 2 a and 2b, including transformer 6, installation folder
Tool 7, moving parts 8, split type inductor.Wherein, the transformer 6 is Split hand held transformer, its input and heating
The output end of power supply is connected to receive input energy, and its output includes the branch road 62 of tie point 61 and second, the heating power supply
The ABS all-in-ones of Yi Fudi sensing apparatus (Shanghai) Co., Ltd. production can be used, the heating power supply of this type can carry
Split hand held transformer is given for stable power output.The wherein branch road 62 of tie point 61 and second may pass through the installation folder
Tool 7, it is therefore an objective to provide certain support force by installs fixture 7 and make it have stability.The split type inductor, it includes
It can be justified after one induction coil 2 and the second induction coil 1, first induction coil 2 and second induction coil 1 splicing
Shape inductor.Control first induction coil 2 and first induction coil 1 close or remote by moving parts.It is real
Existing mode may include：Any one induction coil in (1) two induction coil is fixed, and another induction coil is in moving parts
It can be moved under control；(2) two induction coils can move under the control of moving parts.
Shown in Fig. 2 a and Fig. 2 b situation is planted for (1).As illustrated, first induction coil 2 is by being rigidly connected
Part 10 is fixed in the installs fixture 7, and its input is connected with the output end of the tie point 61, to receive high-frequency ac
Electric signal.Second induction coil 1, its input is connected with the output end of second branch road 62, to receive high-frequency ac
Electric signal.
The moving parts 8, its fixing end are fixedly connected with the installs fixture 7, mobile terminal and second line of induction
The connection of circle 1.The moving parts 8 can select as this kind of extensible member such as cylinder.The moving parts 8 drives second sense
Answer coil 1 remote or close to first induction coil 2.The second induction coil 1 is remote as described in being respectively illustrated Fig. 2 a and 2b
The situation of the situation of first induction coil 2 and second induction coil 1 close to first induction coil 2.From figure
As can be seen that when the second induction coil 1 is away from first induction coil 2, can be joint 9 to be welded reserve passage or
Person space, joint 9 to be welded is enabled to close to first induction coil 2, first sensing by mobile described device
Coil 2 could be arranged to clamp the shape of the joint to be welded 9, directly will be described to be welded using the first induction coil 2
Joint 9 clamps, and the joint 9 to be welded can also be fixed to (locating piece can lead to using single locating piece
Cross and realize fixation with the rigidly connected mode of the installs fixture), treat that second induction coil 8 is moved to corresponding position i.e.
As shown in Figure 2 b, the second induction coil 1 and the first induction coil 2 form the structure of circular inductor.Its welding manner is as schemed
Shown in 2c, joint 9 to be welded is enclosed in inside it by the second induction coil 1 and the first induction coil 2, afterwards can be according to routine
Mode provides solder for it, completes welding.
And in above-mentioned (2) kind mode, it can be analogized according to (1) kind mode.Rigid connector 10 is also replaced
Be changed to moving parts, as shown in Figure 2 d, the fixing end of second moving parts 81 is arranged in the installs fixture, mobile terminal with
First induction coil 2 connects.This mode can move the first induction coil 2 and the second induction coil 1, both control simultaneously
Close or remote, joint to be welded can be fixed on a certain opening position, move two induction coils respectively and connect close to be welded
Head, it is finally constituted the structure such as circular inductor and joint to be welded is surrounded into progress soldering, its soldering principle and mode in (1)
It is identical, it is not described in detail herein.
In such scheme, because two induction coils finally may make up such as the structure of circular inductor, by joint to be welded
Surround, therefore can reach the effect very close with circular inductor, efficiency high good with heating uniformity, welding quality height
Advantage.
Secondly, said apparatus can be needed under the scene using soldering suitable for various, for the size of joint to be welded
There is no any restrictions with shape, because the size of induction coil can be designed according to the structure snd size of joint to be welded.
The shape of joint to be welded can be circular or close with circle shape, such as circular, oval, or close ellipse
Deng.Product to be welded can include Tube-sheet Welding of knockout, expansion valve, four-way valve, pipe and cavity etc..
In addition, it is necessary to explanation, core point of the present utility model are：By Split type transformer by heating power supply
Power is divided into two parts, is connected respectively with two branch roads of Split type transformer using split type inductor obtains energy afterwards.
Situation shown in Fig. 2 a and Fig. 2 b is that second induction coil 1 and first induction coil 2 are moved up by horizontal direction
It is dynamic realize closer or far from.But its can by adjusting the direction of the second induction coil 1 and first induction coil 2,
So that it becomes moving second induction coil 1 from vertical direction makes it closer or far from first induction coil 2, or make
It is changed into making it closer or far from first induction coil 2 from moving second induction coil 1 perpendicular to the direction of paper,
All without departing from the principle for treating the progress induction brazing of welding point 9 in the present embodiment by split type inductor.
Embodiment 2
The split type induction brazing device provided in the present embodiment, as shown in figure 3, described device includes a move portion
Part 8.The installs fixture 7 includes the first supporting part 711 with first through hole 710 and second with the second through hole 720
Support part 721；First induction coil 2 is fixed on first supporting part 711, and the tie point 61 runs through described first
Input after through hole 710 with first induction coil 2 is connected；The fixing end of the moving parts 8 is arranged at described second
On the inwall of through hole 720, second branch road 62 runs through the input with second induction coil 1 after second through hole 720
End connection.
As another scheme arranged side by side, the installs fixture includes the first supporting part with first through hole and with the
Second supporting part of two through holes；Described device includes two moving parts, wherein：The fixing end of one moving parts is arranged at
On the inwall of the first through hole, mobile terminal is connected with first induction coil, and the tie point is logical through described first
The input connection of first induction coil described in Kong Houyu；The fixing end of another moving parts is arranged at second through hole
On inwall, mobile terminal is connected with second induction coil, and second branch road runs through after second through hole with described second
The input connection of induction coil.
The first supporting part 711 and the second supporting part 712 shown in Fig. 3 are semicircular structure, and correspondingly, through hole is also
Semi-circular through hole, it can also use the structures such as rectangle, rhombus, polygon.
Embodiment 3
As shown in figures 4 a and 4b, the split type induction brazing device that the present embodiment provides, in addition to hand-held ring 5, it is described
The hand-held top of ring 5 is provided with the hanging part 51 suitable for being connected with suspender；First supporting part 711 and second supporting part
712 are individually fixed on the inside of the hand-held ring.Alternatively, the suspender can be steel wire, and the hanging part 51 is suitable for steel
The annulus that passes through of silk, is along the circumferential direction molded on the hand-held ring outer wall fluted, and the annulus is embedded in can in the groove
Slided along the groove.So, the hand-held ring 5 can be hung up using suspender, but also can be with hanging part 51
On the basis of put rotating hand ring 5.Package unit can be moved to be welded connect by operating personnel by holding the hand-held ring 5
First position where 9, and by rotating the hand-held ring 5, additionally it is possible to make described device adapt to joint 9 to be welded position and
State.
Furthermore it is also possible to which some switch keys or knob are arranged on the hand-held ring 5, facilitate operating personnel to this
The operating process of device is controlled.In this scenario, the moving parts selection is drive cylinder, and the drive cylinder can band
Move second induction coil 1 and/or first induction coil 2 moves.
As illustrated, described device also includes wire feeding head 3, it is arranged in the top induction range of the first induction coil 2,
It is fixedly connected with the installs fixture 7 and (can uses and realize fixation with the rigid connector identical structure shown in Fig. 2 b), is led to
Wire leading pipe 12 to be crossed to be connected with the filament mouth of automatic wire feeder, the wire feeding head 3 is prepared by ceramic material or silicon nitride material,
, can be close to welding position with resistant to elevated temperatures characteristic.As a kind of preferable scheme, described device also includes cylindrical type and encoded
Device 4, it is fixedly installed on the inwall of the through hole 720 of first through hole 710 or second, wire vent of the welding wire through the automatic wire feeder
Mouthful extended to by being wound after wire leading pipe 12 in another section of wire leading pipe 11 after the cylinder of the cylindrical type encoder 4, from another
One section of wire leading pipe 11 accesses wire feeding head 3 after extending.The transporting velocity of welding wire can be controlled using encoder, so as to ensure stabilization
Solder is equably provided.In this programme, associated components are arranged inside the first support member and the second support member, can be had
Effect saves the space shared by whole device.And above-described automatic wire feeder can obtain from buying on the market.
In all the above scheme, first induction coil and second induction coil are semicircle sensing
Coil, the size of the semicircle induction coil can carry out adaptability design according to the concrete structure of joint to be welded, make it
It is adapted to various soldering application scenarios.Preferably, the diameter of the semicircle induction coil is between 5-200mm, so not only
It is applicable to small size joint brazing, it can also be used in soldering lathe (big pipeline) welding.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
- A kind of 1. split type induction brazing device, it is characterised in that including：Installs fixture；The output end of transformer, its input and heating power supply is connected to receive input energy, its export include tie point with Second branch road；Split type inductor, including the first induction coil and the second induction coil, first induction coil and second sense Coil is answered to can obtain circular inductor after splicing；The input of first induction coil connects with the output end of the tie point Connect；The input of second induction coil is connected with the output end of second branch road；One or two moving parts, the fixing end of the moving parts are fixedly connected with the installs fixture, mobile terminal and institute State the first induction coil or second induction coil connection, mobile terminal movement makes first induction coil and described the Two induction coils are remote or close.
- 2. split type induction brazing device according to claim 1, it is characterised in that：The installs fixture includes the first supporting part with first through hole and the second supporting part with the second through hole；First induction coil is fixed in the installs fixture, the tie point run through the first through hole after with it is described The input connection of first induction coil；Described device includes a moving parts, and the fixing end of the moving parts is arranged at the inwall of second through hole On, mobile terminal is connected with second induction coil, and second branch road senses after running through second through hole with described second The input connection of coil.
- 3. split type induction brazing device according to claim 1, it is characterised in that：The installs fixture includes the first supporting part with first through hole and the second supporting part with the second through hole；Described device includes two moving parts, wherein：The fixing end of one moving parts is arranged on the inwall of the first through hole, and mobile terminal connects with first induction coil Connect, the tie point is connected after running through the first through hole with the input of first induction coil；The fixing end of another moving parts is arranged on the inwall of second through hole, mobile terminal and second induction coil Connection, second branch road are connected after running through second through hole with the input of second induction coil.
- 4. the split type induction brazing device according to Claims 2 or 3, it is characterised in that also include：Hand-held ring, the hand-held ring top are provided with hanging part；First supporting part and second supporting part are individually fixed on the inside of the hand-held ring.
- 5. split type induction brazing device according to claim 4, it is characterised in that：The hanging part is the annulus passed through suitable for steel wire；Along the circumferential direction it is molded fluted on the hand-held ring outer wall, the annulus is embedded in the groove can be along the groove Slide.
- 6. split type induction brazing device according to claim 4, it is characterised in that also include：Wire feeding head, it is arranged above first induction coil in induction range, is fixedly connected with the installs fixture, by leading The filament mouth of fiber tube and automatic wire feeder connects.
- 7. split type induction brazing device according to claim 6, it is characterised in that：The wire feeding head is prepared by ceramic material or silicon nitride material.
- 8. split type induction brazing device according to claim 7, it is characterised in that also include：Cylindrical type encoder, first supporting part or the second supporting part inwall are arranged at, welding wire is through the automatic wire feeder The cylinder of the cylindrical type encoder is wound after filament mouth, is extended to afterwards in the wire leading pipe.
- 9. split type induction brazing device according to claim 1, it is characterised in that：The moving parts is drive cylinder.
- 10. split type induction brazing device according to claim 1, it is characterised in that：First induction coil and second induction coil are semicircle induction coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842605.4U CN206981938U (en) | 2017-07-12 | 2017-07-12 | Split type induction brazing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842605.4U CN206981938U (en) | 2017-07-12 | 2017-07-12 | Split type induction brazing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206981938U true CN206981938U (en) | 2018-02-09 |
Family
ID=61405336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720842605.4U Active CN206981938U (en) | 2017-07-12 | 2017-07-12 | Split type induction brazing device |
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| CN (1) | CN206981938U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587051A (en) * | 2019-08-07 | 2019-12-20 | 浙江帝森科技股份有限公司 | Automatic open-close type induction brazing coil |
| CN112975039A (en) * | 2021-03-04 | 2021-06-18 | 珠海格力智能装备有限公司 | Soldering device |
| CN113814505A (en) * | 2021-09-23 | 2021-12-21 | 深圳供电局有限公司 | Fusion welding device |
-
2017
- 2017-07-12 CN CN201720842605.4U patent/CN206981938U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587051A (en) * | 2019-08-07 | 2019-12-20 | 浙江帝森科技股份有限公司 | Automatic open-close type induction brazing coil |
| CN112975039A (en) * | 2021-03-04 | 2021-06-18 | 珠海格力智能装备有限公司 | Soldering device |
| CN113814505A (en) * | 2021-09-23 | 2021-12-21 | 深圳供电局有限公司 | Fusion welding device |
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