CN114083072A - Welding method for welding conductor of switch cabinet power transformer - Google Patents
Welding method for welding conductor of switch cabinet power transformer Download PDFInfo
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- CN114083072A CN114083072A CN202111384635.2A CN202111384635A CN114083072A CN 114083072 A CN114083072 A CN 114083072A CN 202111384635 A CN202111384635 A CN 202111384635A CN 114083072 A CN114083072 A CN 114083072A
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- 238000003466 welding Methods 0.000 title claims abstract description 225
- 239000004020 conductor Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 37
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 83
- 229910052709 silver Inorganic materials 0.000 claims abstract description 66
- 239000004332 silver Substances 0.000 claims abstract description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 238000009736 wetting Methods 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 17
- 229910000679 solder Inorganic materials 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000005219 brazing Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000005476 soldering Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- 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
- 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
- B23K3/085—Cooling, heat sink or heat shielding means
-
- 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
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a welding method of a welding conductor of a power transformer of a switch cabinet, which relates to the technical field of welding methods and aims at solving the problems that the traditional welding mode is high in welding heat, non-concentrated in welding heat, large in welding heat radiation, easy to damage the welding conductor of the power transformer during welding and the like. The structure of the laser beam and the like is adopted, the welding material of the welding conductor is quickly heated, the heating is concentrated, the heat radiation is small, the damage to the power transformer cannot be caused, the adopted silver welding wire can enable the contact and the joint to be fully contacted during welding, the adopted protection air nozzle during welding can protect the conductor of the power transformer from being oxidized or generating oxide skin during welding, and the wetting of the surface of the welding conductor of the power transformer is improved to promote the flowing of the silver welding wire.
Description
Technical Field
The invention relates to the technical field of welding methods, in particular to a welding method for a welding conductor of a power transformer of a switch cabinet.
Background
The transformer is also called as instrument transformer, which is a general name of current transformer and voltage transformer, can change high voltage into low voltage, and large current into small current, and is used for measuring or protecting system, its function is mainly to convert high voltage or large current into standard low voltage (100V) or standard small current (5A or 1A, both referring to rated value) in proportion, so as to realize standardization and miniaturization of measuring instrument, protecting equipment and automatic control equipment, and the transformer can also be used to separate high voltage system, so as to ensure the safety of human body and equipment.
And current power transformer welded conductor, what generally adopted is the welding methods of traditional type, and traditional welding methods, and the welding heat is high, and the welding heat is not concentrated, and the welding heat radiation is great, produces the damage to power transformer welded conductor easily when the welding, simultaneously, when welding power transformer conductor, produces bubble and welding residue easily to make contact and joint often can not reach the welding standard when the welding, and then influence work your efficiency.
Disclosure of Invention
Objects of the invention
The invention provides a welding method of a welding conductor of a switch cabinet power transformer, which solves the technical problems in the background art, adopts a novel welding method and adopts structures such as a laser beam, a focusing head and the like, when in welding, the welding material of the welding conductor is quickly heated, the heating is concentrated, the heat radiation is small, and the welding material can not damage the power transformer, the adopted silver welding wire is a silver-based brazing filler metal, the silver welding wire is placed in a gap between a contact and a joint, when in welding, the contact and the joint can be fully contacted when in welding, so that the welding standard can be reached when in welding, the adopted protective air nozzle is used for melting and welding the silver welding wire, the silver welding wire is quickly cooled, the welding of the power transformer conductor can not be oxidized or generate oxide skin, and the wetting of the surface of the welding conductor of the power transformer is improved to promote the flowing of the silver welding wire, the device is convenient to use, strong in practicability and convenient to popularize.
(II) technical scheme
The invention provides a welding method of a welding conductor of a power transformer of a switch cabinet, which comprises an iron core, a silver welding wire, a protective air nozzle and a laser beam, wherein a secondary winding is arranged at the top of the iron core, a primary winding is arranged on the outer ring of the iron core, a first contact and a second contact are arranged at the bottoms of two sides of the iron core, the first contact is welded with a first joint, the second contact is welded with a second joint, the first contact and the first joint are welded through a brazing welding technology, the protective air nozzle is used for rapidly cooling the silver welding wire when the silver welding wire is melted and welded, the conductor of the power transformer is protected from being oxidized or generating oxide scale during welding, and the flowing of the silver welding wire is promoted by improving the wetting of the surface of the welding conductor of the power transformer.
Preferably, the secondary winding is spirally wound on the outer surface of the iron core by using a solid copper bar or a copper strip, the first contact on the primary winding is welded on the first joint after being welded on the first joint, the first contact penetrates through the interior of the secondary winding and then is welded on the first joint, and the outer surface of the iron core is provided with an insulating layer.
Preferably, when the first contact is welded with the first joint, a groove is formed in the first joint, and the diameter of the groove is larger than that of the first contact by about 0.1mm, so that a silver welding wire can be embedded into a gap between the first joint and the first contact conveniently, the first contact and the first joint are in full contact during welding, and the welding standard can be met during welding.
Preferably, the first contact is placed in a groove formed in the first joint, and at this time, a silver welding wire is placed in a gap between the first contact and the first joint, and the silver welding wire is a silver-based solder.
Preferably, when the first contact and the first joint are welded, the silver welding wire can be made into a ring shape or a sheet shape and filled in a gap between the first contact and the first joint, so that the loss of the silver welding wire can be reduced, and the welding quality of a welding conductor of the power transformer can be ensured.
Preferably, the output end of the laser beam is provided with a focusing head, the laser beam can achieve the effects of fast heating, concentrated heating and small heat radiation, damage to the power transformer cannot be caused, the silver welding wire is placed in the first contact and the first joint, then is heated through the laser beam, and then is aligned to the silver welding wire through the focusing head to be heated, so that the silver welding wire is melted and flows into a gap between the first contact and the first joint.
Preferably, the protection nozzle rapidly cools the melted silver welding wire entering a gap between the first contact and the first joint, so as to protect the conductor of the power transformer from oxidation or scaling during welding, and promote the flow of the silver welding wire by improving the wetting of the surface of the welding conductor of the power transformer.
Preferably, the laser beam is through using the welding technique that the laser comes the connection metal, the focus head that the output of laser beam set up simultaneously can provide concentrated heat source, can carry out narrow and dark welding and high welding rate, through the focus head of the output installation at the laser beam, and then realizes the concentrated effect of heating to when welding cubical switchboard power transformer welding conductor, avoid producing the harm to power transformer welding conductor, can improve its work efficiency moreover, reduce power transformer welding conductor's damage.
Preferably, the welding method for the welding conductor of the switch cabinet power transformer comprises the following steps:
s1, firstly, a groove can be formed in the first connector, the diameter of the groove is about 1mm larger than that of the first contact, at the moment, the first contact can be placed in the groove formed in the first connector, at the moment, a gap can appear when the first contact is placed in the first connector, at the moment, a silver welding wire can be placed in the gap between the first contact and the first connector, the silver welding wire is a silver-based brazing filler metal, and because the first contact and the first connector are irregular, at the moment, the silver welding wire can be made into a circular ring shape or a sheet shape and is embedded in the gap between the first contact and the first connector in advance, so that the loss of the silver welding wire is reduced;
s2, after the silver welding wire is buried in the gap between the first contact and the first joint, the silver welding wire buried in the gap between the first contact and the first joint is melted at high temperature by using a laser beam and the focusing head, when the laser beam works, the focusing head provides a concentrated heat source, so that a heating block can be realized, the heating is concentrated, the heat radiation is small, the high-temperature damage to the welding conductor of the power transformer when the silver welding wire is heated and welded by using the laser beam through the focusing head is avoided, the silver welding wire flows into the gap between the first contact and the first joint after being melted, then the melted silver welding wire can be cooled by a protective air nozzle, and the protective air nozzle also has the advantages of improving the wetting of the surface of the welding conductor of the power transformer to promote the flowing of the silver welding wire, and further improving the welding quality of the welding conductor of the power transformer, and further improve its work efficiency, likewise, second joint and second contact are welded according to above method.
Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
1. through the laser beam of installation and focusing head isotructure, when the welding, through starting the laser beam for the laser beam begins work, and accessible focusing head heats the silver-colored welding wire, makes the silver-colored welding wire melt, makes the silver-colored welding wire can get into the contact and connect the gap in, can make contact and joint fully contact when the welding, thereby can reach welding standard when the welding.
2. Through the laser beam of installation and focus first isotructure, the laser beam has the heating piece, and the heat radiation is little moreover, through the focus head of the output installation at the laser beam, and then realizes the concentrated effect of heating to when welding cubical switchboard power transformer welded conductor, avoid producing the harm to power transformer welded conductor, can improve its work efficiency moreover, reduce power transformer welded conductor's damage.
3. Through the protection of installation, the nozzle can be when welding power transformer welding conductor for the protection air cock carries out cooling treatment to the silver-colored welding wire after melting, and the protection air cock still has the wetting that improves power transformer welding conductor surface and promotes the flow of silver-colored welding wire, and then can improve power transformer welding conductor's welding quality, and further improve its work efficiency.
To sum up, the novel welding method that this welding method adopted, the laser beam and focus head isotructure that adopt, when welding, to welding conductor's welding material heating is fast, the heating is concentrated, and the little effect of heat radiation, can not produce the harm to power transformer, the silver-colored welding wire that adopts is a silver-based brazing filler metal, place the silver-colored welding wire in the gap between contact and joint, when welding, can make contact fully when welding contact and joint, thereby can reach welding standard when welding, the protection air cock that adopts, when melting welding silver-colored welding wire, carry out quick cooling, do not oxidize or not produce the cinder when protecting power transformer conductor welding, and promote the mobile this device of silver-colored welding wire through improving the wetting on power transformer welding conductor surface, put convenient to use, therefore, the practicality is strong, and the facilitate promotion.
Drawings
Fig. 1 is a schematic perspective view of a welding method for welding conductors of a power transformer of a switch cabinet according to the present invention.
Fig. 2 is a schematic diagram of a welding structure of a joint and a contact in the welding method for the welding conductor of the power transformer of the switch cabinet.
Fig. 3 is a schematic structural diagram of a welding overhead view of a joint and a contact of the welding method for the welding conductor of the power transformer of the switch cabinet.
Fig. 4 is a schematic joint structure diagram of a welding method for a welding conductor of a power transformer of a switch cabinet according to the present invention.
Fig. 5 is a schematic structural diagram of a joint, a contact and a silver welding wire of the welding method for the welding conductor of the power transformer of the switch cabinet.
Reference numerals: 1. an iron core; 2. a first joint; 3. a first contact; 4. a second joint; 5. a second contact; 6. a primary winding; 7. a secondary winding; 8. a silver wire; 9. protecting the air tap; 10. a laser beam; 11. a focusing head.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It is to be understood that these descriptions are only illustrative and are not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
First embodiment, as shown in fig. 1 to 5, the method for welding the welding conductor of the power transformer of the switch cabinet according to the present invention includes an iron core 1, a silver welding wire 8, a protective gas nozzle 9 and a laser beam 10, it is characterized in that the top of the iron core 1 is provided with a secondary winding 7, the outer ring of the iron core 1 is provided with a primary winding 6, the bottoms of the two sides of the iron core 1 are respectively provided with a first contact 3 and a second contact 5, the first contact 3 is welded with a first joint 2, the second contact 5 is welded with a second joint 4, the first contact 3 and the first joint 2 are welded by a brazing welding technology, a protection air tap 9 is adopted, when the silver welding wire 8 is melted and welded, the silver welding wire is rapidly cooled to protect the conductor of the power transformer from being oxidized or generating oxide skin when being welded, and facilitates the flow of silver solder wire by improving wetting of the surface of the power transformer welding conductor.
In the second embodiment, as shown in fig. 1 and 2, the secondary winding 7 is spirally wound on the outer surface of the iron core 1 by using a solid copper bar or a copper strip, the first contact 3 on the primary winding 6 is welded on the first joint 2, and then passes through the inside of the secondary winding 7 and is welded on the first joint 2, the outer surface of the iron core 1 is provided with an insulating layer, when the first contact 3 is welded with the first joint 2, a groove is formed in the first joint 2, the diameter of the groove is larger than that of the first contact 3 by about 0.1mm, the first contact 3 is placed in the groove formed in the first joint 2, at this time, the silver wire 8 is placed in a gap between the first contact 3 and the first joint 2, and the silver wire 8 is a silver-based solder.
In the third embodiment, as shown in fig. 1 and 5, when the first contact 3 is welded to the first connector 2, the silver wire 8 may be made into a ring shape or a sheet shape and filled into the gap between the first contact 3 and the first connector 2, which may reduce the loss of the silver wire 8 and ensure the welding quality of the welding conductor of the power transformer, the output end of the laser beam 10 is provided with the focusing head 11, the laser beam 10 may achieve the effects of fast heating, concentrated heating, and small heat radiation, which may not damage the power transformer, after the silver wire 8 is placed in the first contact 3 and the first connector 2, the silver wire 8 is heated by the laser beam 10, and then the focusing head 11 is aligned with the silver wire 8 to melt and flow into the gap between the first contact 3 and the first connector 2, the laser beam 10 and the focusing head 11 are used, and the welding material of the welding conductor is heated fast during welding, the heating is concentrated, and the effect that the heat radiation is little can not produce the harm to power transformer.
In the fourth embodiment, as shown in fig. 3, the protective air tap 9 is used for rapidly cooling the melted silver welding wire 8 entering the gap between the first contact 3 and the first connector 2, so as to protect the conductor of the power transformer from oxidation or scaling during welding, and promotes the flow of the silver welding wire 8 by improving the wetting of the surface of the welding conductor of the power transformer, the laser beam 10 is a welding technique for connecting metals by using laser, the focusing head 11 is simultaneously arranged at the output end of the laser beam 10, a concentrated heat source can be provided, narrow and deep welding and high welding rate can be performed, the silver wire 8 used is a silver-based solder, the silver wire 8 is placed in the gap between the first contact 3 and the first joint 2, at the time of soldering, the first contact 3 and the first tab 2 can be brought into sufficient contact at the time of soldering, so that the soldering standard can be met at the time of soldering.
According to the invention, firstly, the first connector 2 can be provided with a groove, the diameter of the groove is about 1mm larger than that of the first contact 3, at the moment, the first contact 3 can be placed in the groove formed in the first connector 2, at the moment, a gap can appear when the first contact 3 is placed in the first connector 2, at the moment, the silver welding wire 8 can be placed in the gap between the first contact 3 and the first connector 2, and the silver welding wire 8 is a silver-based brazing filler metal, because the first contact 3 and the first connector 2 are in an irregular shape, at the moment, the silver welding wire 8 can be made into a circular ring shape or a sheet shape and is pre-embedded in the gap between the first contact 3 and the first connector 2, so as to reduce the loss of the silver welding wire 8, after the silver welding wire 8 is embedded in the gap between the first contact 3 and the first connector 2, a laser beam 10 is used, and the focusing head 11 is used for heightening the silver welding wire 8 pre-embedded in the gap between the first contact 3 and the first connector 2 The temperature melts, when the laser beam 10 works, the focusing head 11 provides a concentrated heat source, so that a heating block can be realized, the heating is concentrated, the heat radiation is small, the high-temperature damage to the welding conductor of the power transformer can be avoided when the laser beam 10 is used for heating and welding the silver welding wire 8 through the focusing head 11, the silver welding wire 8 flows into a gap between the first contact 3 and the first connector 2 after being melted, then the melted silver welding wire 8 can be cooled through the protection air nozzle 9, the protection air nozzle 9 can improve the wetting of the surface of the welding conductor of the power transformer to promote the flowing of the silver welding wire 8, the welding quality of the welding conductor of the power transformer can be improved, the working efficiency of the welding conductor of the power transformer can be further improved, and similarly, the second connector 4 and the second contact 5 are also welded by the above method.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such changes and modifications that fall within the scope and bounds of the appended claims, or equivalents of such scope and bounds.
Claims (9)
1. The utility model provides a cubical switchboard power transformer welding conductor's welding method, includes iron core (1), silver-colored welding wire (8), protection air cock (9) and laser beam (10), its characterized in that, the top of iron core (1) is provided with secondary winding (7), the outer lane of iron core (1) is provided with primary winding (6), the both sides bottom of iron core (1) all is provided with first contact (3) and second contact (5), first contact (3) welding has first joint (2), second contact (5) welding has second joint (4), first contact (3) and first joint (2) weld through the welding technique of brazing.
2. The welding method for the welding conductor of the switch cabinet power transformer according to the claim 1, characterized in that the secondary winding (7) is spirally wound on the outer surface of the iron core (1) by using a solid copper bar or a copper strip, the first contact (3) on the primary winding (6) is welded on the first joint (2), then passes through the interior of the secondary winding (7) and is welded on the first joint (2), and the outer surface of the iron core (1) is provided with an insulating layer.
3. The welding method for the welding conductor of the switch cabinet power transformer according to claim 1, characterized in that when the first contact (3) is welded with the first joint (2), a groove is formed in the first joint (2), and the diameter of the groove is about 0.1mm larger than that of the first contact (3).
4. A method for welding conductors of a switch cabinet power transformer according to claim 1, characterized in that the first contact (3) is placed in a recess formed in the first connector (2), and a silver wire (8) is placed in the gap between the first contact (3) and the first connector (2), wherein the silver wire (8) is a silver-based solder.
5. The method for welding the welding conductor of the power transformer of the switch cabinet according to claim 1, wherein when the first contact (3) is welded with the first joint (2), the silver welding wire (8) is made into a ring shape or a sheet shape and filled in a gap between the first contact (3) and the first joint (2), so that the loss of the silver welding wire (8) can be reduced, and the welding quality of the welding conductor of the power transformer can be ensured.
6. The welding method for welding conductors of a power transformer of a switch cabinet according to claim 1, characterized in that the output end of the laser beam (10) is provided with a focusing head (11), the effects of fast heating, concentrated heating and small heat radiation can be achieved by the laser beam (10) without causing damage to the power transformer, the silver wire (8) is placed in the first contact (3) and the first joint (2), then heated by the laser beam (10), and then heated by the focusing head (11) in alignment with the silver wire (8) to melt and flow into the gap between the first contact (3) and the first joint (2).
7. The welding method of the welding conductor of the switch cabinet power transformer according to claim 1, characterized in that the protective air tap (9) cools the melted silver welding wire (8) rapidly entering the gap between the first contact (3) and the first joint (2) to protect the welding conductor of the power transformer from oxidation or scaling and promote the flow of the silver welding wire (8) by improving the wetting of the surface of the welding conductor of the power transformer.
8. The welding method for welding conductors of a power transformer of a switch cabinet according to claim 1, characterized in that the laser beam (10) is a welding technique for joining metals by using laser, and the output end of the laser beam (10) is simultaneously provided with a focusing head (11) capable of providing a concentrated heat source, and narrow and deep welding and high welding rate can be performed.
9. The welding method of the welding conductor of the switch cabinet power transformer according to claim 1,
s1, first, a groove may be formed in the first connector 2, and a diameter of the groove is about 1mm larger than a diameter of the first contact 3, at this time, the first contact 3 may be placed in the groove formed in the first connector 2, at this time, a gap may occur when the first contact 3 is placed in the first connector 2, at this time, the silver solder wire 8 may be placed in the gap between the first contact 3 and the first connector 2, and the silver solder wire 8 is a silver-based solder, because the first contact 3 and the first connector 2 may be in an irregular shape, at this time, the silver solder wire 8 may be made into a ring shape or a sheet shape and is embedded in the gap between the first contact 3 and the first connector 2 in advance, so as to reduce the loss of the silver solder wire 8;
s2, after the silver welding wire 8 is buried in the gap between the first contact 3 and the first joint 2, the laser beam 10 is used and the focusing head 11 is used for melting the silver welding wire 8 which is buried in the gap between the first contact 3 and the first joint 2 at high temperature, when the laser beam 10 works, the focusing head 11 provides a concentrated heat source, so that a heating block can be realized, the heating is concentrated, the heat radiation is small, further, the high-temperature damage to the welding conductor of the power transformer when the laser beam 10 is used for heating and welding the silver welding wire 8 through the focusing head 11 is avoided, the silver welding wire 8 flows into the gap between the first contact 3 and the first joint 2 after being melted, then the melted silver welding wire 8 can be cooled through the protection air nozzle 9, and the protection air nozzle 9 also has the function of improving the wetting of the surface of the welding conductor of the power transformer to promote the flowing of the silver welding wire 8, further, the welding quality of the welding conductor of the power transformer can be improved, and the working efficiency of the welding conductor of the power transformer can be further improved, and similarly, the second joint 4 and the second contact 5 are also welded according to the method.
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| CN202111384635.2A CN114083072A (en) | 2021-11-22 | 2021-11-22 | Welding method for welding conductor of switch cabinet power transformer |
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| CN202111384635.2A CN114083072A (en) | 2021-11-22 | 2021-11-22 | Welding method for welding conductor of switch cabinet power transformer |
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| CN109175571A (en) * | 2018-10-19 | 2019-01-11 | 广汽本田汽车有限公司 | A kind of laser welding method for copper MnZn welding wire welding of automotive part |
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