CN115383237A - Welding device and welding method - Google Patents
Welding device and welding method Download PDFInfo
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- CN115383237A CN115383237A CN202211242562.8A CN202211242562A CN115383237A CN 115383237 A CN115383237 A CN 115383237A CN 202211242562 A CN202211242562 A CN 202211242562A CN 115383237 A CN115383237 A CN 115383237A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 91
- 229910000679 solder Inorganic materials 0.000 claims abstract description 47
- 238000001125 extrusion Methods 0.000 claims abstract description 45
- 230000008569 process Effects 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims description 41
- 238000003825 pressing Methods 0.000 claims description 37
- 230000006698 induction Effects 0.000 claims description 25
- 238000005476 soldering Methods 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 10
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- 238000009434 installation Methods 0.000 claims description 9
- 239000000112 cooling gas Substances 0.000 claims description 8
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- 239000004020 conductor Substances 0.000 description 6
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- 230000008023 solidification Effects 0.000 description 5
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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
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Brazing of electronic components
-
- 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
- B23K1/002—Soldering by means of induction heating
-
- 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
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
-
- 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
- B23K2101/38—Conductors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention provides a welding device and a welding method. This welding set includes: a mounting seat having a heating region, the mounting seat configured to mount a component to be welded, the component to be welded including at least two superconductive cable tapes with solder disposed between adjacent superconductive cable tapes; the heating assembly is positioned in the heating area and can heat the assembly to be welded to melt the solder so as to weld at least two superconducting cable belts together; the driving part can drive the component to be welded to move along the length extension direction of the mounting seat; and the extrusion assembly can apply extrusion acting force to the component to be welded on the mounting seat in the process of moving the component to be welded. The welding device adopting the technical scheme can solve the problem that the production efficiency is low because the whole production line needs to be stopped and can continue to operate after the welding is finished in the existing welding mode.
Description
Technical Field
The invention relates to the technical field of superconducting application, in particular to a welding device and a welding method.
Background
The high-temperature superconducting material has the characteristics of direct current, no resistance and high current carrying, has the electromagnetic characteristics which are not possessed by a conventional conductor under certain conditions, plays an important role in various fields such as electric power, energy, information and the like, and is used for manufacturing various high-efficiency energy storage magnets, power generation and electric equipment. Superconducting equipment represented by superconducting energy storage, superconducting cables, superconducting current limiters and superconducting phase modulators has a remarkable energy-saving effect in the whole power system. The preparation process of the high-temperature superconducting tape is divided into a first-generation high-temperature superconducting tape and a second-generation high-temperature superconducting tape, wherein the first-generation high-temperature superconducting tape is of a multi-core structure and is prepared by adopting a PIT (particle image transfer) process, and the second-generation high-temperature superconducting tape belongs to a coated conductor and mainly comprises a metal base band material, a transition layer, a superconducting layer and various coatings.
At present, the high-temperature superconducting cable is mainly fixed by means of static tin soldering of a production line, in the process of the static tin soldering, a conductor needs to be heated, welded and cooled in stages, in the process of the static tin soldering, the production line of the whole lead needs to be stopped, the high-temperature superconducting cable can continue to run after the end of welding, and production efficiency is low.
Disclosure of Invention
The invention mainly aims to provide a welding device and a welding method, which can solve the problem that the production efficiency is low because the whole production line is stopped in the welding process and can continue to operate after the welding is finished by adopting the conventional welding mode.
In order to achieve the above object, according to an aspect of the present invention, there is provided a welding apparatus including: a mount having a heating region, the mount configured to mount a component to be welded, the component to be welded including at least two superconducting cables with solder disposed between adjacent two superconducting cables; the heating assembly is positioned in the heating area and can heat the assembly to be welded to melt the solder so as to weld at least two superconducting cable belts together; the driving part can drive the component to be welded to move along the length extension direction of the mounting seat; and the extrusion assembly can apply extrusion acting force to the component to be welded on the mounting seat in the process of moving the component to be welded.
Further, the extrusion subassembly includes guide structure and extruded piece, and the extruded piece is installed on the guide structure, and the position of extruded piece for the mount pad is adjustable, and the one end that the extruded piece is close to the mount pad with wait to weld the subassembly butt.
Further, the extrusion assembly further comprises an installation part and a connecting part, the installation part is installed on the guide structure, the extrusion piece is connected with the installation part through the connecting part, and the extrusion piece can move along the guide direction of the guide structure under the driving of the installation part.
Furthermore, the extrusion assembly further comprises an elastic piece and a first adjusting piece, the elastic piece and the first adjusting piece are both installed on the guide structure, the elastic piece is located between the first adjusting piece and the installation portion, one end of the elastic piece is abutted to one end, far away from the installation seat, of the installation portion, the other end of the elastic piece is abutted to the first adjusting piece, and the position of the first adjusting piece relative to the elastic piece is adjustable so as to change the length of the elastic piece.
Further, welding set still includes the second regulating part, and the mount pad includes the mounting groove, treats that welding set and second regulating part are all installed in the mounting groove, and the second regulating part all can form spacing space with the arbitrary one lateral wall in two lateral walls of mounting groove between, and the second regulating part can be followed the width direction removal of mounting groove to change the width in spacing space, and make spacing space with treat welding set looks adaptation.
Furthermore, welding set still includes the support frame, and mount pad and extrusion component all install on the support frame, and extrusion component's quantity is a plurality of, and a plurality of extrusion component set up along the length extending direction interval of mounting groove.
Further, the heating assembly comprises an induction coil and a controller, the induction coil is electrically connected with the controller and can generate a variable magnetic field under the control of the controller, the induction coil is installed on the support frame, and the induction coil is located in the heating area so that the temperature of the assembly to be welded located in the heating area is gradually increased.
Furthermore, the mounting seat, the extrusion piece and the second adjusting piece are made of high-temperature-resistant non-metallic materials.
Furthermore, the welding device also comprises a temperature detection piece, wherein the temperature detection piece is arranged on one side of the mounting seat close to the component to be welded so as to detect the temperature of the heating area; and/or the welding device also comprises a fixing piece, and the mounting seat is fixedly connected with the support frame through the fixing piece.
Further, welding set still includes cooling module, and the mount pad still includes the cooling zone, and cooling module includes air feed portion and exhaust portion, and the exhaust end and the cooling zone of exhaust portion are linked together.
Further, the soldering apparatus further includes a material removing portion provided at a starting end of the cooling area to remove the solder overflowing from the components to be soldered after being melted.
According to another aspect of the present invention, there is provided a welding method for welding by the welding apparatus described above, including: placing a component to be welded on the mounting seat; adjusting the position of the extrusion piece to enable the extrusion piece to be pressed on the component to be welded; adjusting the position of the adjusting piece to enable the pressure of the extrusion piece on the component to be welded to reach a preset value; moving the component to be welded at a preset speed; heating the components to be welded which move into the heating area; and when the to-be-welded assembly reaches a first preset temperature T1, cooling the to-be-welded assembly, wherein the value range of T1 is that a is not less than T1 and not more than b, a is the melting point of the solder, and b is the melting point of the superconducting cable band.
Further, the step of placing the component to be welded on the mounting base further comprises the following steps: placing a test welding part on the mounting seat; acquiring the temperature of a test welding part in a heating area in real time; adjusting the power of the heating assembly according to the obtained temperature until the temperature of the test welding part reaches a first preset temperature; the test solder is removed.
Further, the step of heating the to-be-welded component moved into the heating area includes: and adjusting the output frequency and current of the controller according to the obtained temperature to enable the induction coil to generate a corresponding alternating magnetic field, and further enable the component to be welded to generate heat through induction under the alternating magnetic field until the temperature of the component to be welded reaches a first preset temperature.
Further, after the to-be-welded assembly reaches the first preset temperature, stopping heating, and cooling the to-be-welded assembly, wherein the step of cooling the to-be-welded assembly comprises the following steps: acquiring a temperature value of a component to be welded at an outlet end; comparing the temperature value with a second preset temperature value; if the temperature value is higher than the second preset temperature T2, increasing the ventilation volume of the cooling gas; and if the temperature value is equal to or less than a second preset temperature T2, performing wire rewinding operation on the assembly to be welded, wherein the value range of the second preset temperature T2 is that T2 is not more than c, and c is the solidification point of the solder.
By applying the technical scheme of the invention, the mounting seat, the heating assembly, the extruding assembly and the driving part are arranged, the assembly to be welded is mounted on the mounting seat and can move along the length extending direction of the mounting seat under the driving of the driving part, when the assembly to be welded moves to a heating area, the heating assembly in the heating area heats the assembly to be welded, so that the welding flux between two adjacent superconducting cable belts is melted, in the process of moving the assembly to be welded on the mounting seat, the extruding acting force is always applied to the assembly to be welded, the structural stability of the assembly to be welded in the moving process is ensured, and when the welding flux between two adjacent superconducting cable belts is melted, the two adjacent superconducting cable belts in the assembly to be welded can be tightly attached under the extruding acting force of the extruding assembly. And after the to-be-welded assembly leaves the heating area, entering a cooling link, wherein in the cooling process, the extrusion assembly still applies extrusion acting force to the to-be-welded assembly, at the moment, the molten solder is gradually solidified, and two adjacent superconducting cable belts are welded together to finally obtain the high-temperature superconducting cable. In addition, when the welding device is used for welding, the components to be welded are always moved, the whole welding process is continuous and uninterrupted, the production line does not need to stop and the like, and then the components are continuously operated after welding is finished, so that the production efficiency can be greatly improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows an overall configuration diagram of a welding apparatus of an embodiment of the present invention;
FIG. 2 is a schematic view of another angle of the welding device of the embodiment of the present invention;
FIG. 3 shows a schematic view of a part of a welding apparatus according to an embodiment of the present invention;
FIG. 4 shows a cross-sectional view of a welding device of an embodiment of the present invention;
FIG. 5 shows a flow chart of a welding method of an embodiment of the present invention;
FIG. 6 shows a flow chart of the steps of a soldering method of an embodiment of the present invention before placing a component to be soldered on a mount; and
fig. 7 shows a flowchart of steps of cooling down after the components to be welded reach the first preset temperature in the welding method according to the embodiment of the invention.
Wherein the figures include the following reference numerals:
10. a mounting seat; 11. mounting grooves; 12. a heating zone; 13. a cooling zone; 20. a component to be welded; 30. a heating assembly; 31. an induction coil; 32. a controller; 40. an extrusion assembly; 41. a guide structure; 42. an extrusion; 43. an installation part; 44. a connecting portion; 45. an elastic member; 46. a first adjustment member; 50. a second adjustment member; 60. a support frame; 70. a fixing member; 80. a cooling assembly; 81. an air supply part; 82. an exhaust section; 90. a temperature detection member; 100. a material removing part.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 4 in combination, the present invention provides a welding apparatus including: a mounting seat 10, the mounting seat 10 having a heating region 12, the mounting seat 10 being configured to mount a component 20 to be welded, the component 20 to be welded including at least two superconducting cable tapes, a solder being disposed between two adjacent superconducting cable tapes; the heating assembly 30 is positioned in the heating area 12, and the heating assembly 30 can heat the assembly to be welded 20 to melt the solder so as to weld at least two superconducting cable belts together; a driving part capable of driving the component to be welded 20 to move along the length extension direction of the mounting seat 10; and a pressing assembly 40, wherein the pressing assembly 40 can apply a pressing force to the assembly 20 to be welded positioned on the mounting base 10 during the movement of the assembly 20 to be welded.
In this embodiment, the component 20 to be welded is a high-temperature superconducting cable, the component 20 to be welded is mounted on the mounting base 10 and can move along the length extending direction of the mounting base 10 under the driving of the driving portion, when the component 20 to be welded moves to the heating region 12, the heating component 30 in the heating region 12 heats the component 20 to be welded, so that the solder between two adjacent superconducting cable strips melts, the extruding component 40 is located above the component 20 to be welded, and in the process of moving the component 20 to be welded on the mounting base 10, an extruding acting force is always applied to the component 20 to be welded, so that the structural stability of the component 20 to be welded in the moving process can be ensured. And when the solder between two adjacent superconducting cable belts is melted, under the extrusion force of the extrusion assembly 40, the two adjacent superconducting cable belts in the assembly to be welded 20 can be kept in close fit. And after the component 20 to be welded leaves the heating area 12, entering a cooling link, wherein in the cooling process, the molten solder is gradually solidified, and welding two adjacent superconducting cable belts together to finally obtain the high-temperature superconducting cable. In addition, in the process of gradually solidifying the solder, the extrusion assembly 40 still applies extrusion acting force to the assembly to be welded 20, so that a welding seam between two adjacent superconducting cable belts can be ensured, and the welding quality is improved. Compared with a conventional static tin soldering mode, the assembly 20 to be soldered in the technical scheme is always moved, the whole soldering process is continuous and uninterrupted, and the high-temperature superconducting cable production line does not need to be stopped and then continuously operates after soldering is finished, so that the production efficiency can be greatly improved.
In one embodiment of the present invention, the solder may be a liquid solder or may be a solder sheet. When the solder is the soldering tin piece, the soldering tin piece and the superconducting cable belt are arranged at intervals, namely the soldering tin piece is arranged between two adjacent superconducting cable belts, so that the problem that liquid soldering tin is not uniform in smearing can be avoided, and the design difficulty of equipment can be reduced.
Referring to fig. 1 to 4 in combination, in one embodiment of the present invention, the pressing member 40 includes a guide structure 41 and a pressing member 42, the pressing member 42 is mounted on the guide structure 41, the position of the pressing member 42 relative to the mounting base 10 is adjustable, and one end of the pressing member 42 close to the mounting base 10 abuts against the component 20 to be welded.
In the embodiment, one end of the extruding component 42 abuts against the component 20 to be welded, and the extruding component 42 can apply an extruding acting force to the component 20 to be welded, so that the two adjacent superconducting cable belts can still be kept tight in the moving process of the component 20 to be welded. In addition, since the position of the pressing member 42 on the guide structure 41 is adjustable, it is possible to accommodate components 20 to be welded of various thicknesses, so that the applicability of the welding apparatus can be improved.
In one embodiment of the invention, the guide structure 41 may be a guide bar and the extrusion 42 may be an extrusion wheel. The guide rod can position and guide the extrusion wheel in the vertical direction.
Referring to fig. 1 to 4 in combination, in an embodiment of the present invention, the pressing assembly 40 further includes a mounting portion 43 and a connecting portion 44, the mounting portion 43 is mounted on the guiding structure 41, and the pressing member 42 is connected to the mounting portion 43 through the connecting portion 44 and can move along the guiding direction of the guiding structure 41 under the driving of the mounting portion 43.
In this embodiment, the mounting portion 43 is mounted on the guide structure 41 and can move along the length extension direction of the guide structure 41, and the extruding member 42 is connected with the mounting portion 43 through the connecting portion 44, so that when the mounting portion 43 moves along the guide structure 41, the connecting portion 44 can be driven to move, and the extruding member 42 is driven to move along the length extension direction of the guide structure 41, thereby realizing the position adjustment of the extruding member 42 relative to the mounting base 10.
In an embodiment of the present invention, the guiding structure 41 is a plurality of guiding rods arranged at intervals, the mounting portion 43 can be a mounting plate whose two ends can be sleeved on the guiding rods, the connecting portion 44 can be a connecting rod, and two sides of the extrusion piece 42 are respectively fixedly connected with the mounting plate located at the side thereof through the connecting rod.
Referring to fig. 1 to 4 in combination, in an embodiment of the present invention, the pressing assembly 40 further includes an elastic member 45 and a first adjusting member 46, the elastic member 45 and the first adjusting member 46 are both mounted on the guide structure 41, the elastic member 45 is located between the first adjusting member 46 and the mounting portion 43, one end of the elastic member 45 abuts against one end of the mounting portion 43 far away from the mounting base 10, the other end of the elastic member 45 abuts against the first adjusting member 46, and a position of the first adjusting member 46 relative to the elastic member 45 is adjustable to change a length of the elastic member 45.
In this embodiment, by adjusting the position of the first adjusting member 46 relative to the elastic member 45, the length of the elastic member 45 can be changed, and thus the elastic force of the elastic member 45 can be changed. The pressure applied by the pressing member 42 to the assembly to be welded 20 can be adjusted by adjusting the elastic force of the elastic member 45. In the practical application process, the worker can correspondingly adjust the pressure according to the thickness of the component 20 to be welded and the width of the superconducting cable, so that the pressure adaptation of the component 20 to be welded is ensured, and the problem that the superconducting cable in the component 20 to be welded is damaged due to overlarge friction force between the extrusion part 42 and the component 20 to be welded is avoided.
In one embodiment of the present invention, the elastic member 45 may be a spring.
Referring to fig. 1 to 4 in combination, in an embodiment of the present invention, the welding device further includes a second adjusting part 50, the mounting seat 10 includes a mounting groove 11, the component to be welded 20 and the second adjusting part 50 are both mounted in the mounting groove 11, a limiting space can be formed between the second adjusting part 50 and any one of two side walls of the mounting groove 11, and the second adjusting part 50 can move along the width direction of the mounting groove 11 to change the width of the limiting space and make the limiting space fit with the component to be welded 20.
Through the setting, can make and treat welding set 20 and spacing space looks adaptation, and then can guarantee to treat welding set 20 under the extrusion of extruded piece 42, still can keep original stacked state, can not take place the sideslip. In addition, because the second adjusting part 50 can move along the width direction of the mounting groove 11, the width of the limiting space is adjusted, the limiting requirements of the assemblies to be welded 20 with different width sizes and thickness sizes can be met, and the applicability of the welding device can be improved.
Referring to fig. 1 to 4 in combination, in one embodiment of the present invention, the welding device further includes a cooling assembly 80, the mounting base 10 further includes a cooling area 13, the cooling assembly 80 includes a gas supply portion 81 and a gas discharge portion 82, and a gas discharge end of the gas discharge portion 82 is communicated with the cooling area 13.
In the present embodiment, the gas supply part 81 supplies cooling gas to the gas exhaust part 82, the gas supply part 81 is connected to the gas exhaust part 82 through a gas supply pipe, not shown in the figure, and the cooling gas is introduced into the cooling area 13 through the gas exhaust part 82 to cool the to-be-welded assembly 20 moving to the cooling area 13, so that the melted solder is solidified, and finally, two adjacent superconducting cable tapes are welded together.
In one embodiment of the present invention, the air supply part 81 may be an air compressor, and the air discharge part 82 may be a cooling pipe. The cooling gas introduced may be nitrogen.
Referring to fig. 1 to 4 in combination, in an embodiment of the present invention, the welding device further includes a supporting frame 60, the mounting base 10 and the pressing assemblies 40 are mounted on the supporting frame 60, the number of the pressing assemblies 40 is multiple, and the multiple pressing assemblies 40 are spaced apart from each other along the length extension direction of the mounting groove 11. The welding device further comprises a fixing part 70, and the mounting seat 10 is fixedly connected with the supporting frame 60 through the fixing part 70
In the present embodiment, the number of the pressing assemblies 40 is multiple, and the multiple pressing assemblies 40 are arranged at intervals along the length extension direction of the mounting groove 11, that is, the pressing assemblies 40 are arranged at intervals in the heating area 12 and the cooling area 13, so that when the assembly 20 to be welded is located in the heating area 12 and the solder in the assembly 20 to be welded is gradually melted, the pressing force of the pressing assemblies 40 on the assembly 20 to be welded can make the assembly 20 to be welded still keep the original stacking state, and the compactness of the structure of the assembly 20 to be welded can also be ensured. In addition, when the component 20 to be welded is located in the cooling area 13 and the molten solder is gradually solidified under the cooling of the cooling gas, the pressure applied by the extrusion piece 42 on the component 20 to be welded can ensure that the two adjacent superconducting cable belts are tightly attached in the process of realizing welding by the solidification of the solder, so that the obtained welding part has a more compact structure and a better welding effect. The mounting seat 10 is fixedly connected with the supporting frame 60 through the fixing member 70, and the material of the mounting seat 10 needs to be a high temperature resistant material.
Referring to fig. 1 to 4 in combination, in one embodiment of the present invention, the heating assembly 30 includes an induction coil 31 and a controller 32, the induction coil 31 is electrically connected to the controller 32 and is capable of generating a varying magnetic field under the control of the controller 32, the induction coil 31 is mounted on the support bracket 60, and the induction coil 31 is located in the heating area 12 to gradually increase the temperature of the assembly to be welded 20 located in the heating area 12.
The conventional welding mode of the high-temperature superconducting cable is completely static by a conductor and then compresses the conductor, high-temperature airflow and high-temperature radiation are adopted for heating, heat is required to be conducted from a heating element to a tool to the surface of a strip material, the heat is conducted inwards layer by layer until a welding flux layer, the heat which is transmitted to a required part is relatively less, most of the heat is wasted in the air, great heat loss exists, and when the heat is conducted to the high-temperature superconducting cable for tin welding, temperature gradient is generated from outside to inside, so that the heating is uneven, and the welding quality is influenced. And for the high-temperature superconducting tape, the stability of the internal multilayer structure is not high, the soldering tin encapsulated by the tape is melted and separated frequently in the welding process, and the soldering tin between the tapes is not completely melted, so that the problems of structural damage, performance reduction and even scrapping of the tape are caused. In addition, the conventional tin soldering adopts a tin wire, so that the surface of a high-temperature superconducting tape is easily oxidized in high-temperature coating, the welding resistance is increased, local heating is overhigh during power-on, the whole production efficiency is reduced during static welding, and the production economy is influenced.
In the present embodiment, the magnitude of the alternating magnetic field generated by the induction coil 31 located in the heating region 12 can be adjusted by adjusting the output frequency of the controller 32 and the magnitude of the current. Then, the assembly 20 to be welded is continuously heated through the induction coil 31, the heating process mainly utilizes the electromagnetic induction heating principle, alternating current is induced by the alternating magnetic field generated by the induction coil 31 in the assembly 20 to be welded positioned in the heating area 12, and the alternating current enables the metal layer in the assembly 20 to be welded, namely the superconducting cable belt, to form eddy current and generate heat.
In one embodiment of the present invention, the mounting base 10, the pressing member 42 and the second adjusting member 50 are made of high temperature resistant non-metallic materials.
Through the arrangement, the problem that in the heating process, the alternating magnetic field generated by the induction coil 31 also induces the alternating current and generates heat in the mounting seat 10, the extrusion part 42 and the second adjusting part 50, so that the temperature in the heating area 12 is uneven can be avoided, and the problem that the structural stability is influenced due to the fact that the mounting seat 10, the extrusion part 42 and the second adjusting part 50 generate heat under the action of the induction coil 31 can be avoided.
In one embodiment of the present invention, the fixing member 70, the mounting groove 11, the second adjusting member 50, and the pressing member 42 may be made of teflon.
In one embodiment of the present invention, the welding device further includes a temperature detecting member 90, and the temperature detecting member 90 is disposed on a side of the mounting base 10 close to the component 20 to be welded to detect the temperature of the heating region 12.
In this embodiment, the temperature detecting element 90 can obtain the temperature of the heating area 12 in real time, and the worker can obtain the temperature of the heating area 12 according to the temperature detecting element 90, and if the temperature value is lower than or higher than the melting temperature of the solder, the worker can adjust the size of the alternating magnetic field generated by the induction coil 31 through the controller 32, so that the solder in the to-be-welded component 20 located in the heating area 12 can be melted.
It should be noted that, in an embodiment of the present invention, the length of the heating region 12 should be satisfied, the heating assembly 30 is operated at a preset power, the temperature of the assembly to be welded 20 starts to gradually increase after entering the heating region 12, and when the assembly to be welded 20 moves to the boundary position between the heating region 12 and the cooling region 13, the solder in the assembly to be welded 20 just melts. Thus, heat loss can be reduced, and cost is saved.
Referring to fig. 1 to 4 in combination, in one embodiment of the present invention, the soldering apparatus further includes a material removing portion 100, and the material removing portion 100 is disposed at the starting end of the cooling region 13 to remove the solder overflowing from the component 20 to be soldered after being melted.
In the present embodiment, the material removing part 100 can remove the solder overflowing from the component to be soldered 20 after melting, so that the surface of the component to be soldered 20 is kept clean.
Referring to fig. 5 to 7 in combination, according to another aspect of the present invention, there is provided a welding method for welding using the welding apparatus described above, including: placing the component 20 to be welded on the mounting base 10; adjusting the position of the extruding member 42 to enable the extruding member 42 to be pressed on the component 20 to be welded; adjusting the position of the adjusting piece to enable the pressure of the extrusion piece 42 on the component 20 to be welded to reach a preset value; moving the to-be-welded assembly 20 at a preset speed; heating the to-be-welded component 20 moved into the heating area 12; and when the to-be-welded assembly 20 reaches a first preset temperature T1, cooling the to-be-welded assembly, wherein the value range of T1 is that a is not less than T1 and not more than b, a is the melting point of the solder, and b is the melting point of the superconducting cable band.
In the embodiment, firstly, the component 20 to be welded is placed on the mounting base 10, the position of the second adjusting part 50 is adjusted according to the width of the component 20 to be welded, the component 20 to be welded is adapted to the limiting space, the position of the extruding part 42 is adjusted, the extruding part 42 is pressed on the component 20 to be welded, the position of the first adjusting part 46 is adjusted, the pressure of the extruding part 42 on the component 20 to be welded reaches a preset value, then the driving part drives the component 20 to be welded to move, the heating part 30 heats the component 20 to be welded moving into the heating area 12, when the temperature reaches the melting temperature of the solder, the component 20 to be welded enters the cooling area 13, the cooling part 80 cools the component 20 to be welded moving into the cooling area 13, the melted solder is gradually solidified, and welding is completed. The value range of the first preset temperature is that T1 is more than or equal to a and less than or equal to b, so that the solder can be completely melted, and the problem that the superconducting cable belt is melted and damaged due to overhigh temperature can be solved.
Referring to fig. 5 to 7 in combination, in an embodiment of the present invention, the step of placing the component to be welded 20 on the mounting base 10 further includes: placing a test weldment on the mount 10; acquiring the temperature of a test welding part in the heating area 12 in real time; adjusting the power of the heating assembly 30 according to the acquired temperature until the temperature of the test welding part reaches a first preset temperature; the test solder is removed. The step of heating the to-be-welded component 20 moved into the heating region 12 includes: according to the acquired output frequency and current of the temperature adjusting controller 32, the induction coil 31 generates a corresponding alternating magnetic field, and further the component 20 to be welded generates heat by induction under the alternating magnetic field until the temperature of the component 20 to be welded reaches a first preset temperature.
In this embodiment, before the formal welding process is performed, the test welding part is placed on the mounting base 10, the heating assembly 30 is turned on, the heating assembly 30 heats the test welding part located in the heating region 12, the controller 32 is adjusted until the temperature of the test welding part reaches the first preset temperature, that is, the solder in the test welding part melts, the test welding part is removed, the heating assembly 30 is turned off, the to-be-welded component 20 is placed on the mounting base 10, at this time, the controller 32 does not need to be adjusted again, after the positions of the extrusion part 42 and the to-be-welded component 20 are adjusted, the heating assembly 30 is operated at the power before being turned off, and the to-be-welded component 20 is heated.
It should be noted that the test weldment is identical in structure and material to the assembly 20 to be welded.
Referring to fig. 5 to 7 in combination, in an embodiment of the present invention, after the to-be-welded assembly 20 reaches the first preset temperature, the step of stopping heating and cooling includes: acquiring a temperature value of the component 20 to be welded at the outlet end; comparing the temperature value with a second preset temperature value; if the temperature value is greater than the second preset temperature T2, increasing the ventilation volume of the cooling gas; and if the temperature value is equal to or less than a second preset temperature T2, performing wire rewinding operation on the assembly to be welded 20, wherein the value range of the second preset temperature T2 is that T2 is not more than c, and c is the solidification point of the solder.
In this embodiment, the surface of the component to be welded 20 is measured at the outlet end by an infrared temperature measuring device, and if the temperature value is greater than the second preset temperature T2, it is indicated that the temperature of the component to be cooled 80 does not drop to the solidification point of the solder, so that the ventilation amount of the cooling gas needs to be increased, and the melted solder in the component to be welded 20 is solidified. If the temperature value is equal to or less than the second preset temperature T2, it indicates that the temperature of the component to be welded 20 reaches the solidification point of the solder, the solder melted in the component to be welded 20 can be solidified, the component to be welded 20 performs a wire rewinding operation, that is, the on-line welding process of the component to be welded 20 is completed, and finally, the conductor rewinding or the coil winding operation is performed.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: through setting up the mount pad, heating element, extrusion subassembly and drive division, treat that the welding assembly is installed on the mount pad, and can remove along the length extending direction of mount pad under the drive of drive division, when treating that the welding assembly moves to the heating region, the heating element in the heating region treats the welding assembly and heats, make the solder between two adjacent superconductive cable belts melt, treat the in-process that the welding assembly moved on the mount pad, treat all the time and treat the welding assembly and exert the extrusion effort, guarantee to treat the structural stability of welding assembly in the removal process, and when the solder between two adjacent superconductive cable belts melts, under the extrusion effort of extrusion subassembly, treat and can keep closely laminating between two adjacent superconductive cable belts in the welding assembly. And after the to-be-welded assembly leaves the heating area, entering a cooling link, wherein in the cooling process, the extrusion assembly still applies extrusion acting force to the to-be-welded assembly, at the moment, the molten solder is gradually solidified, and two adjacent superconducting cable belts are welded together to finally obtain the high-temperature superconducting cable. In addition, when the welding device is used for welding, the assemblies to be welded are always moved, the whole welding process is continuous and uninterrupted, the production line does not need to be stopped and then continuously run after welding is finished, and the production efficiency can be greatly improved.
The method for on-line induction soldering of the high-temperature superconducting cable can ensure the normal operation of the whole production line of the high-temperature superconducting cable, greatly improves the production efficiency, adopts an adjustable pinch roller structure in the welding process, can ensure that a plurality of superposed superconducting strips are tightly attached while the strips are conveyed and welded, and ensures quick and high-quality welding.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A welding device, comprising:
a mounting base (10), the mounting base (10) having a heating area (12), the mounting base (10) being configured to mount a component to be welded (20), the component to be welded (20) comprising at least two superconductive cables, solder being provided between two adjacent superconductive cables;
a heating assembly (30), the heating assembly (30) being located within the heating zone (12), the heating assembly (30) being capable of heating the assembly to be welded (20) to melt the solder to weld at least two of the tapes together;
the driving part can drive the component (20) to be welded to move along the length extending direction of the mounting seat (10); and
a pressing assembly (40), wherein the pressing assembly (40) can apply a pressing force to the assembly to be welded (20) on the mounting seat (10) in the process of moving the assembly to be welded (20).
2. Welding device according to claim 1, wherein the pressing assembly (40) comprises a guide structure (41) and a pressing element (42), the pressing element (42) being mounted on the guide structure (41), the position of the pressing element (42) relative to the mounting (10) being adjustable, and one end of the pressing element (42) close to the mounting (10) abutting the assembly (20) to be welded.
3. The welding device according to claim 2, characterized in that the pressing assembly (40) further comprises a mounting portion (43) and a connecting portion (44), the mounting portion (43) is mounted on the guide structure (41), and the pressing member (42) is connected with the mounting portion (43) through the connecting portion (44) and can move along the guide direction of the guide structure (41) under the driving of the mounting portion (43).
4. Welding device according to claim 3, wherein said pressing assembly (40) further comprises an elastic member (45) and a first adjustment member (46), said elastic member (45) and said first adjustment member (46) being mounted on said guide structure (41), said elastic member (45) being located between said first adjustment member (46) and said mounting portion (43), one end of said elastic member (45) being in abutment with an end of said mounting portion (43) remote from said mounting seat (10), the other end of said elastic member (45) being in abutment with said first adjustment member (46), the position of said first adjustment member (46) with respect to said elastic member (45) being adjustable so as to vary the length of said elastic member (45).
5. The welding device according to claim 2, characterized in that the welding device further comprises a second adjusting piece (50), the mounting seat (10) comprises a mounting groove (11), the component to be welded (20) and the second adjusting piece (50) are both mounted in the mounting groove (11), a limiting space can be formed between the second adjusting piece (50) and any one of the two side walls of the mounting groove (11), and the second adjusting piece (50) can move along the width direction of the mounting groove (11) to change the width of the limiting space and enable the limiting space to be matched with the component to be welded (20).
6. The welding device according to claim 5, characterized in that, the welding device also includes a support frame (60), the mount pad (10) and the extrusion components (40) are both installed on the support frame (60), the number of the extrusion components (40) is a plurality, and a plurality of the extrusion components (40) are arranged at intervals along the length extension direction of the installation groove (11).
7. Welding device according to claim 6, characterized in that said heating assembly (30) comprises an induction coil (31) and a controller (32), said induction coil (31) being electrically connected to said controller (32) and being able to generate a varying magnetic field under the control of said controller (32), said induction coil (31) being mounted on said support (60), said induction coil (31) being located within said heating zone (12) so as to gradually increase the temperature of said assembly to be welded (20) located within said heating zone (12).
8. Welding device according to claim 7, wherein the mounting (10), the pressing part (42) and the second adjusting part (50) are made of a high temperature resistant non-metallic material.
9. Welding device according to claim 6, characterized in that it further comprises a temperature detection member (90), said temperature detection member (90) being arranged on the side of said mounting seat (10) close to said component to be welded (20) to detect the temperature of said heating zone (12); and/or the presence of a gas in the gas,
the welding device further comprises a fixing piece (70), and the mounting seat (10) is fixedly connected with the supporting frame (60) through the fixing piece (70).
10. Welding device according to claim 1, characterized in that it further comprises a cooling assembly (80), said mounting (10) further comprising a cooling zone (13), said cooling assembly (80) comprising a gas supply (81) and a gas discharge (82), the gas discharge end of said gas discharge (82) being in communication with said cooling zone (13).
11. A soldering apparatus according to claim 10, further comprising a material removing portion (100), the material removing portion (100) being provided at a starting end of the cooling region (13) to remove the solder overflowing from the component to be soldered (20) after melting.
12. A welding method for welding by using the welding apparatus according to any one of claims 1 to 11, comprising:
placing the component (20) to be welded on the mounting seat (10);
adjusting the position of a pressing member (42) to enable the pressing member (42) to be pressed on the component (20) to be welded;
adjusting the position of a regulating piece to ensure that the pressure of the extrusion piece (42) on the component (20) to be welded reaches a preset value;
-moving the component (20) to be welded at a preset speed;
heating a component (20) to be welded that is moved into the heating zone (12);
and when the component (20) to be welded reaches a first preset temperature T1, cooling the component, wherein the value range of T1 is that a is not less than T1 and not more than b, a is the melting point of the solder, and b is the melting point of the superconducting cable belt.
13. Welding method according to claim 12, wherein the step of placing the component (20) to be welded on the mount (10) is preceded by the further step of:
placing a test weldment on the mount (10);
acquiring the temperature of the test weldment in the heating area (12) in real time;
adjusting the power of a heating assembly (30) according to the obtained temperature until the temperature of the test welding part reaches the first preset temperature;
removing the test weldment.
14. Welding method according to claim 12, wherein the step of heating the component (20) to be welded moved into the heating zone (12) comprises:
according to the acquired output frequency and current of the temperature adjusting controller (32), the induction coil (31) generates a corresponding alternating magnetic field, and the component to be welded (20) is induced to generate heat under the alternating magnetic field until the temperature of the component to be welded (20) reaches the first preset temperature.
15. Welding method according to claim 12, wherein the step of stopping heating and cooling the component (20) to be welded after it has reached a first preset temperature comprises:
acquiring a temperature value of the component (20) to be welded at an outlet end;
comparing the temperature value with a second preset temperature value;
if the temperature value is greater than the second preset temperature T2, increasing the ventilation volume of the cooling gas;
and if the temperature value is equal to or less than the second preset temperature T2, performing wire rewinding operation on the component (20) to be welded, wherein the value range of the second preset temperature T2 is that T2 is not more than c, and c is the solidifying point of the solder.
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| CN202211242562.8A CN115383237A (en) | 2022-10-11 | 2022-10-11 | Welding device and welding method |
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