CN104668699B - Fast-acting fuse tinning device and fast-acting fuse tinning method - Google Patents
Fast-acting fuse tinning device and fast-acting fuse tinning method Download PDFInfo
- Publication number
- CN104668699B CN104668699B CN201510070482.2A CN201510070482A CN104668699B CN 104668699 B CN104668699 B CN 104668699B CN 201510070482 A CN201510070482 A CN 201510070482A CN 104668699 B CN104668699 B CN 104668699B
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- Prior art keywords
- fuse
- stannum
- induction coil
- cabinet
- plate
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- Expired - Fee Related
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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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/04—Heating appliances
- B23K3/047—Heating appliances electric
- B23K3/0475—Heating appliances electric using induction effects, e.g. Kelvin or skin effects
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a fast-acting fuse tinning device and a fast-acting fuse tinning method. The fast-acting fuse tinning device comprises a pneumatic press, the pneumatic press comprises a case, an air cylinder is mounted in the case, a lifting mechanism is connected with the top of the air cylinder, the upper part of the lifting mechanism extends out of the case, and the lifting mechanism can move relative to the case along the vertical direction; a press plate is connected with the top of the case through a plurality of pillars; an induction coil is arranged at the bottom of the press plate, and the press plate is located over the lifting mechanism. Because high-frequency induction heating equipment is adopted by the invention, working efficiency is greatly increased, energy is saved, and cost is reduced; moreover, because the surface oxidation of the conductive plates of a fuse is little, the surface quality is greatly increased.
Description
Technical field
The present invention relates to a kind of fastp-acting fuse stannum gasifying device and method.
Background technology
Fastp-acting fuse is applied widely in field of power electronics, is mainly used in semiconductor rectifier cell
Short-circuit protection with fairing.Fastp-acting fuse stannum refer to two pieces of conductive plates between stannum sheet
After fusing, two pieces of conductive plates are welded together tightly, to reduce electric current by electricity during conductive plate
Resistance.
Existing stannum gasifying device many employings cabinet-type electric furnace, puts into cabinet-type electric furnace by the fuse treating stannum,
Owing to furnace inner space is limited, it is impossible to once accommodate too much fuse, can only put in batches.Load molten
Disconnected device after leaving certain interval, starts heating furnace power supply, slowly heats, in order to prevent porcelain vase
Cracking, it is necessary to carry out being heated to the temperature of stannum sheet fusing stage by stage, about 200 DEG C, need 10 hours left sides
The right side, this Period Process is longer, causes work efficiency low, and energy resource consumption increases, and strengthens and produces into
This；After to be heated to 200 DEG C stannum sheet fusings, asbestos gloves need to be put on by operator and take out, take out one
Before stannum solidifies, two conductive plates are compressed with screwdriver immediately after individual, open fire door the most again and take out additionally
One, so circulation is carried out, and this operating process is careless slightly, it will scald, and burn leads to thing
Therefore；After end of operation, it is necessary to waiting heating furnace to be cooled to room temperature can put the fuse treating stannum again
Enter in cabinet-type electric furnace, cause production efficiency low.Therefore a kind of production efficiency of design is high, save the energy,
Reduce cost, safe and reliable fastp-acting fuse stannum gasifying device is particularly important.
Summary of the invention
For defect or deficiency present in above-mentioned prior art, it is an object of the invention to, it is provided that a kind of
Fastp-acting fuse stannum gasifying device and method.
For achieving the above object, the present invention is by the following technical solutions:
A kind of fastp-acting fuse stannum gasifying device, including aerostatic press, described aerostatic press includes cabinet, described
Being provided with cylinder in cabinet, described cylinder is connected above supporting mechanism, described supporting mechanism top warp
The opening that enclosure top is arranged stretches out described cabinet, and supporting mechanism vertically can be transported relative to cabinet
Dynamic；
Connected by multiple columns above described cabinet and have pressing plate；Described pressing plate bottom surface is provided with induction coil,
Pressing plate is positioned at the surface of supporting mechanism.
Further, described supporting mechanism includes that supporting plate, described supporting plate are arranged on above cabinet, supporting plate
Lower section is provided with supporting plate seat, and supporting plate seat is positioned at cabinet inside and connects the piston of described cylinder below
Bar.
Further, below described supporting plate seat, limiting plate is installed；Described supporting plate seat is internally provided with sky
Chamber, is provided with spherical surface body in described cavity, the sphere of described spherical surface body contacts with described cavity inner wall
And can relatively slide；
Described spherical surface body is fixedly connected below piston rod head, and described piston rod head lower end is by limiting plate center
The through hole arranged stretches out described limiting plate, and is connected with the piston rod in described cylinder；Described piston
Space is left between head and limiting plate.
Further, described pressing plate bottom surface is provided with groove, and described induction coil is positioned at described groove.
Further, described induction coil uses monomer plane induction coil or binary plane induction coil.
Further, the casing of described cabinet is additionally provided with control valve, purifying pressure regulator, flow speed control valve
And one-way throttle valve.
Further, all fixed by nut between the plurality of column and pressing plate.
A kind of method applying above-mentioned fastp-acting fuse stannum gasifying device to carry out fastp-acting fuse stannum, including
Following steps:
1) will treat that the fuse of stannum is neatly placed on the side of HF induction heating apparatus；
2) device is checked, specific as follows:
Ventilation no-load running for several times, checks whether each joint of aerostatic press leaks gas, and piston the most normally works；
The specification of the fuse according to required stannum, selects the specification of induction coil；Guarantee the line of induction coil
Between circle and coil, short circuit does not occurs；
Start the cooling circulating water machine in HF induction heating apparatus, observe whole water circulation system with or without
Seepage, adjusting water outlet pressure so that it is be maintained at 0.2 0.3MPa, water temperature is between 5 DEG C 25 DEG C；
Connect source of the gas, adjust the aperture of one-way throttle valve so that it is be positioned at the centre position of adjusting range；
Gradually regulate the output pressure of purifying pressure regulator to the operating pressure needed for cylinder；Regulation flow speed control valve, makes
The speed of cylinder reaches perfect condition.
3) fuse treating stannum is placed on supporting plate center, opening controlling valve, makes fuse rise to
Contact with induction coil, make both central alignments, start the heat button of HF induction heating apparatus, for
Induction coil is energized, by ascending for the output desirable value that is adjusted to, during induction coil electrified regulation one section
Heating is stopped after between；Temperature retention time is 55s～65s, heats complete；
Stannum effect is observed by the aperture on fuse conducting plate；If scolding tin melts the most completely, then continue
Continuous heating, until scolding tin just melts.
4) closing control valve, makes fuse away from pressing plate；Fuse is taken out, treats scolding tin ot-yet-hardened
Time tighten rapidly the screw on lower conducting plate, be placed on dividing plate cooling.
5), after stannum terminates, the on and off switch of HF induction heating apparatus, recirculated water machine to be cooled are closed
Outlet water temperature cool off after, turn off cooling circulating water electromechanical source, and close source of the gas.
Compared with prior art, the present invention has following technical effect that
1, use HF induction heating apparatus, shorten the stannum time, one fuse of original stannumization need
Want 10 hours, the most only need 1 minute, substantially increase work efficiency, save the energy, reduce into
This；Can be melted by stannum sheet in a short period of time so that porcelain vase breakage reduces, yield rate increases；
And fuse conducting plate surface oxidation is few, surface quality increases substantially.
2, use aerostatic press, alleviate the labor intensity of workman.
3, the stannum gasifying device of the present invention is in use, and the upper guide electroplax of fuse is heated, remaining
Position is room temperature, it is to avoid the generation of industrial accident.
4, working environment is greatly improved, and does not has noise and dust, environmental protection during operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of aerostatic press；
Fig. 3 is the installation diagram of cylinder；
Fig. 4 is the structural representation of supporting mechanism；
Fig. 5 is that monomer plane sense answers coil structures schematic diagram；
Fig. 6 is that binary plane sense answers coil structures schematic diagram；
In figure, label represents: 1 pressing plate, 2 induction coils, 3 columns, 4 fuses, 5 supporting plates,
6 supporting plate seats, 7 cylinders, 8 cabinets, 9 control valves, 10 purifying pressure regulators, 11 speed governing
Valve, 12 one-way throttle valves, 13 limiting plates, 14 piston rod heads, 15 nuts, 16 countersunk heads
Screw, 17 piston rods, 18 bolts, 19 spherical surface body.
Below in conjunction with the accompanying drawings with detailed description of the invention the technical solution of the present invention is further explained and
Explanation.
Detailed description of the invention
Defer to technique scheme, see Fig. 1 and 2, the fastp-acting fuse stannum gasifying device of the present invention, bag
Including aerostatic press, described aerostatic press includes cabinet 8, is provided with cylinder 7, described cylinder in described cabinet 8
7 are connected above supporting mechanism, and the opening that described supporting mechanism top is arranged through cabinet 8 top stretches out institute
Stating cabinet 8, supporting mechanism can be vertically moving relative to cabinet 8；
Connected by multiple columns 3 above described cabinet 8 and have pressing plate 1；Described pressing plate 1 bottom surface is provided with
Induction coil 2, pressing plate 1 is positioned at the surface of supporting mechanism.
Fuse is placed on described supporting mechanism, near pressing plate 1 under the drive of supporting mechanism.This is real
Executing in example, described column 3 is provided with 4, and its height is more than the maximum height of fuse, it is ensured that molten
Disconnected device can be placed at the top of described supporting mechanism.
Alternatively, seeing Fig. 3 and 4, described supporting mechanism includes that supporting plate 5, described supporting plate 5 are arranged on
Above cabinet 8, being provided with supporting plate seat 6 below supporting plate 5, supporting plate seat 6 is positioned at inside cabinet 8 and under it
Side connects the piston rod 17 in described cylinder 7, and the up and down motion of piston rod 17 drives supporting mechanism along perpendicular
Nogata is to up and down motion.
Alternatively, below described supporting plate seat 6, limiting plate 13 is installed；Described supporting plate seat 6 is internal to be arranged
There is cavity, be provided with in described cavity in spherical surface body 19, the sphere of described spherical surface body 19 and described cavity
Wall contacts and can relatively slide；Described spherical surface body 19 is fixedly connected below piston rod head 14, described work
The through hole that stopper rod head 14 lower end is arranged by limiting plate 13 center stretches out described limiting plate 13, and with institute
The piston rod 17 stated in cylinder 7 is connected.Limiting plate 13 is in order to limit the range of movement of spherical surface body 19.
The length of described supporting plate 5 is more than the Breadth Maximum of the fuse of different size, thus conveniently picks and places
Fuse.
The stroke of the piston of described cylinder 7 is more than the fuse end face maximum to pressing plate 1 of different size
Distance, prevents fuse from cannot contact with pressing plate 1 bottom surface.
Space is left so that piston rod head 14 top is even between described piston rod head 14 and limiting plate 13
The spherical surface body 19 connect can be slided relative to cavity inner wall in the cavity within supporting plate seat 6；And described sky
Gap is unsuitable excessive, typically leaves 5mm space, for limiting the range of movement of piston rod head 14, prevents
The movement angle of spherical surface body 19 is excessive.Make between supporting plate 5 and piston rod head 14, only to make low-angle micro-
Adjust, solve piston rod head 14 axis and pressing plate 1 bottom surface off plumb caused because of factors such as assemblings
Problem, it is ensured that fuse stannum plane is parallel with pressing plate 1 bottom surface.In actual production, this design
It is possible not only to extend piston rod head 14 and the service life of cylinder 7, also can promote the stannum matter of fuse
Amount.
Alternatively, the sphere top of described spherical surface body 19 is plane, and the purpose of this design is processing side
Just.
Alternatively, it is connected by sunk screw 16 between described supporting plate 5 and supporting plate seat 6；Described supporting plate
Seat 6 and limiting plate 13 are fixed by bolt 18.
Alternatively, described pressing plate 1 bottom surface is provided with groove, and described induction coil 2 is positioned at described groove.
Concrete, in order to protect the insulating barrier of induction coil 2 will not lose efficacy because of abrasion, by pressing plate 1 according to sensing
The shape milling of circle 2 goes out a groove, in induction coil 2 is placed in this groove during installation so that induction coil 2
Bottom surface and the bottom surface of pressing plate 1 be in same level, effectively prevent fuse stannumization in the face of induction coil 2
Build-up of pressure, avoids induction coil 2 to deform because of pressure and encloses the abrasion of external insulation layer.In process of production,
The induction coil 2 matched with it only in accordance with different size change of fuse to be processed and pressing plate 1.
Alternatively, as shown in Figure 4 and Figure 5, described induction coil 2 uses monomer plane induction coil or double
Body plane induction coil, is respectively used to monomer or the double and stannum of fuse.Maximum according to required stannum
The fuse of specification, selects GP-50 type HF induction heating apparatus, and the rated voltage of this equipment is
380V/50Hz, input power 5-50KVA, input concussion frequency 30-90KHz, cyclic duration factor 100%.
Alternatively, the casing of described cabinet 8 is additionally provided with control valve 9, purifying pressure regulator 10, adjusts
Speed valve 11 and one-way throttle valve 12.Wherein, control valve 9 connects cylinder 7, and control valve 9 is used for passing through
Cylinder 7 controls the raising and lowering of supporting mechanism；Purifying pressure regulator 10 is for regulating the pressure in cylinder 7
Power；Flow speed control valve 11 is for regulating the speed of cylinder 7 inner carrier；One-way throttle valve 12 is used for controlling gas
The flow in source.
Alternatively, all fixed by nut 15 between described column 3 and pressing plate 1.Described nut 15
And it is provided with plain washer and spring washer between pressing plate 1, for disperseing the nut 15 pressure to pressing plate 1,
Thus protect pressing plate 1.
The fastp-acting fuse stannum gasifying device of the application present invention, the method carrying out fastp-acting fuse stannum, tool
Body comprises the following steps:
1) will treat that the fuse of stannum is neatly placed on the side of HF induction heating apparatus.
2) device is checked, specific as follows:
Ventilation no-load running 2-3 time, checks whether each joint of aerostatic press leaks gas, the most normal work of piston
Make；
The specification of the fuse according to required stannum, selects the specification of induction coil 2；Guarantee induction coil 2
Coil and coil between short circuit does not occurs；
Start the cooling circulating water machine in HF induction heating apparatus, observe whole water circulation system with or without
Seepage, adjusting water outlet pressure so that it is be maintained at 0.2 0.3MPa, water temperature is between 5 DEG C 25 DEG C；
Connect source of the gas, adjust the aperture of one-way throttle valve 12 so that it is be positioned at the centre position of adjusting range；
Gradually the output pressure of regulation purifying pressure regulator 10 is to the operating pressure needed for cylinder 7, and about 0.2
0.3MPa；Regulation flow speed control valve 11, makes the speed of cylinder 7 reach 50mm/s at the uniform velocity perfect condition.
3) fuse treating stannum is placed on supporting plate 5 center, opening controlling valve 9, makes on fuse
Rising to contact with induction coil 2, make both central alignments, the heating starting HF induction heating apparatus is pressed
Button, is energized for induction coil 2, is adjusted to desirable value by ascending for output, fuses for monomer
Device may select between 30～40KVA, then takes its output upper limit 50KVA for double and fuse, sense
Stop heating after should enclosing for 2 electrified regulation a period of times, be incubated；Temperature retention time and the rule of fuse
The factor such as lattice and heating power is relevant, and temperature retention time is 55s～65s, heats complete；
Stannum effect is observed by the aperture on fuse conducting plate；If scolding tin melts the most completely, then continue
Continuous heating, until scolding tin just melts.
4) closing control valve 9, makes fuse away from pressing plate 1.Put on asbestos gloves to be taken out by fuse,
When scolding tin ot-yet-hardened, tighten rapidly the screw on upper lower conducting plate, fuse is placed on dividing plate
Cooling.
5), after stannum terminates, the on and off switch of HF induction heating apparatus, recirculated water machine to be cooled are closed
Outlet water temperature cool off after, turn off cooling circulating water electromechanical source, and close source of the gas.
Claims (5)
1. a fastp-acting fuse stannum gasifying device, including aerostatic press, described aerostatic press includes cabinet (8), described cabinet
(8) cylinder (7) is installed in, it is characterised in that described cylinder (7) is connected above supporting mechanism, described picking-up
The opening that mechanism top is arranged through cabinet (8) top stretches out described cabinet (8), and supporting mechanism can be relative to cabinet (8)
Vertically moving；
Described cabinet (8) top is connected by multiple columns (3) pressing plate (1)；Described pressing plate (1) bottom surface is arranged
Induction coil (2), pressing plate (1) is had to be positioned at the surface of supporting mechanism；
Described supporting mechanism includes that supporting plate (5), described supporting plate (5) are arranged on cabinet (8) top, under supporting plate (5)
Side is provided with supporting plate seat (6), and supporting plate seat (6) is positioned at cabinet (8) inside and connects described cylinder (7) below
Piston rod (17)；
Described supporting plate seat (6) lower section is provided with limiting plate (13)；Described supporting plate seat (6) is internally provided with cavity, institute
Being provided with spherical surface body (19) in stating cavity, the sphere of described spherical surface body (19) contacts with described cavity inner wall and can
Relatively slide；
Described spherical surface body (19) is fixedly connected below piston rod head (14), and described piston rod head (14) lower end is by limiting plate
(13) through hole that center is arranged stretches out described limiting plate (13), and with the piston rod (17) in described cylinder (7)
It is connected；Space is left between described piston rod head (14) and limiting plate (13)；
Described pressing plate (1) bottom surface is provided with groove, and described induction coil (2) is positioned at described groove.
2. fastp-acting fuse stannum gasifying device as claimed in claim 1, it is characterised in that described induction coil (2) is adopted
With monomer plane induction coil or binary plane induction coil.
3. fastp-acting fuse stannum gasifying device as claimed in claim 1, it is characterised in that the case of described cabinet (8)
Control valve (9), purifying pressure regulator (10), flow speed control valve (11) and one-way throttle valve (12) it is additionally provided with on body.
4. fastp-acting fuse stannum gasifying device as claimed in claim 1, it is characterised in that the plurality of column (3)
And all fixed by nut (15) between pressing plate (1).
5. apply the method that the fastp-acting fuse stannum gasifying device described in claim 1 carries out fastp-acting fuse stannum,
It is characterized in that, comprise the following steps:
1) will treat that the fuse of stannum is neatly placed on the side of HF induction heating apparatus；
2) device is checked, specific as follows:
Ventilation no-load running for several times, checks whether each joint of aerostatic press leaks gas, and piston the most normally works；
The specification of the fuse according to required stannum, selects the specification of induction coil (2)；Guarantee the coil of induction coil (2)
And short circuit does not occurs between coil；
Starting the cooling circulating water machine in HF induction heating apparatus, observing whole water circulation system has ne-leakage, adjusts
Water pressure so that it is be maintained at 0.2 0.3MPa, water temperature is between 5 DEG C 25 DEG C；
Connect source of the gas, adjust the aperture of one-way throttle valve (12) so that it is be positioned at the centre position of adjusting range；Gradually adjust
The output pressure of joint purifying pressure regulator (10) is to the operating pressure needed for cylinder (7)；Regulation flow speed control valve (11), makes gas
The speed of cylinder (7) reaches perfect condition；
3) fuse treating stannum is placed on supporting plate (5) center, opening controlling valve (9), make fuse rise to
Induction coil (2) contacts, and makes both central alignments, starts the heat button of HF induction heating apparatus, for induction coil (2)
Energising, by ascending for the output desirable value that is adjusted to, stops heating after induction coil (2) electrified regulation a period of time；
Temperature retention time is 55s～65s, heats complete；
Stannum effect is observed by the aperture on fuse conducting plate；If scolding tin melts the most completely, then continue heating, until
Scolding tin just melts；
4) closing control valve (9), make fuse away from pressing plate (1)；Fuse is taken out, when scolding tin ot-yet-hardened
Tighten rapidly the screw on lower conducting plate, be placed on dividing plate cooling；
5), after stannum terminates, the on and off switch of HF induction heating apparatus, the water outlet saliva of recirculated water machine to be cooled are closed
After temperature cools off, turn off cooling circulating water electromechanical source, and close source of the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070482.2A CN104668699B (en) | 2015-02-11 | 2015-02-11 | Fast-acting fuse tinning device and fast-acting fuse tinning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070482.2A CN104668699B (en) | 2015-02-11 | 2015-02-11 | Fast-acting fuse tinning device and fast-acting fuse tinning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104668699A CN104668699A (en) | 2015-06-03 |
| CN104668699B true CN104668699B (en) | 2017-01-11 |
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ID=53304569
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|---|---|---|---|
| CN201510070482.2A Expired - Fee Related CN104668699B (en) | 2015-02-11 | 2015-02-11 | Fast-acting fuse tinning device and fast-acting fuse tinning method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5779846A (en) * | 1997-03-25 | 1998-07-14 | Fan; Kan-Tsang | Machine for embedding copper nuts in a workpiece |
| JP3409679B2 (en) * | 1998-02-06 | 2003-05-26 | 神港精機株式会社 | Soldering equipment |
| CN102458744A (en) * | 2009-04-16 | 2012-05-16 | 美国合成公司 | Brazing method and apparatus therefor using induction heating |
| CN203830870U (en) * | 2014-03-28 | 2014-09-17 | 珠海格力电器股份有限公司 | Induction soldering equipment |
| CN104249202A (en) * | 2013-06-25 | 2014-12-31 | 杭州之江开关股份有限公司 | Breaker contact soft coupler medium frequency welding process |
| CN204430498U (en) * | 2015-02-11 | 2015-07-01 | 西安建筑科技大学 | A kind of fastp-acting fuse tin gasifying device |
-
2015
- 2015-02-11 CN CN201510070482.2A patent/CN104668699B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5779846A (en) * | 1997-03-25 | 1998-07-14 | Fan; Kan-Tsang | Machine for embedding copper nuts in a workpiece |
| JP3409679B2 (en) * | 1998-02-06 | 2003-05-26 | 神港精機株式会社 | Soldering equipment |
| CN102458744A (en) * | 2009-04-16 | 2012-05-16 | 美国合成公司 | Brazing method and apparatus therefor using induction heating |
| CN104249202A (en) * | 2013-06-25 | 2014-12-31 | 杭州之江开关股份有限公司 | Breaker contact soft coupler medium frequency welding process |
| CN203830870U (en) * | 2014-03-28 | 2014-09-17 | 珠海格力电器股份有限公司 | Induction soldering equipment |
| CN204430498U (en) * | 2015-02-11 | 2015-07-01 | 西安建筑科技大学 | A kind of fastp-acting fuse tin gasifying device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104668699A (en) | 2015-06-03 |
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Granted publication date: 20170111 Termination date: 20190211 |