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WO2023052034A1 - Procédé de fabrication d'un élément de contact d'un interrupteur à vide, élément de contact pour un interrupteur à vide et interrupteur à vide comportant un tel élément de contact - Google Patents

Procédé de fabrication d'un élément de contact d'un interrupteur à vide, élément de contact pour un interrupteur à vide et interrupteur à vide comportant un tel élément de contact Download PDF

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Publication number
WO2023052034A1
WO2023052034A1 PCT/EP2022/074457 EP2022074457W WO2023052034A1 WO 2023052034 A1 WO2023052034 A1 WO 2023052034A1 EP 2022074457 W EP2022074457 W EP 2022074457W WO 2023052034 A1 WO2023052034 A1 WO 2023052034A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact body
net
processed
shape
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2022/074457
Other languages
German (de)
English (en)
Inventor
Thomas Brauner
Hermann BÖDINGER
Karsten Freundt
Frank Graskowski
Daniel Kupka
Carsten Schuh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to CN202280065028.6A priority Critical patent/CN118043927A/zh
Priority to EP22773184.1A priority patent/EP4385051A1/fr
Publication of WO2023052034A1 publication Critical patent/WO2023052034A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B22F2003/1051—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by electric discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil

Definitions

  • the present disclosure relates to a manufacturing method for a contact body for a vacuum interrupter, a contact body for a vacuum interrupter and a vacuum interrupter with such a contact body.
  • EP0731478A2 describes the possibility of sintering contact materials.
  • the object of the invention is to eliminate the existing disadvantages of the prior art.
  • a first embodiment relates to a manufacturing method for a contact body of a vacuum interrupter, wherein the contact body is designed to carry out switching operations for low, medium and/or high voltage applications in the vacuum interrupter, and the contact body is formed from a near-net-shape, pre-processed contact body, wherein the The contact body and the near-net-shape, pre-processed contact body have a radial expansion and an axial extent, with the near-net-shape, pre-processed contact body being finalized by means of an SPS method—spark plasma sintering method—whereby during the finalizing by means of SPS the pre-processed contact body is densified in an axial direction Direction in a matrix made of one or more materials from the material classes of
  • powder or sintered bodies are sintered and compacted by applying pressure to the object, introducing heat into the object and conducting current through the object.
  • the pressure is preferably exerted uniaxially.
  • the object here is the near-net-shape, pre-processed contact body that is post-compacted.
  • finalizing is to be understood as post-processing by means of a SPS process, in which in particular a post-compacting of the near-net-shape, pre-processed contact body takes place in the axial direction of the near-net-shape, pre-processed contact body.
  • TZM is a mixed-crystal hardened and particle-reinforced molybdenum-based alloy. TZM also has good strength properties at temperatures above 1400° C., especially at temperatures above 2000° C., which is advantageous for the SPS process.
  • the near-net-shape, pre-processed contact body is to be understood in particular as a prefabricated blank of a contact body, which already has the contour of the finished contact body, ie, the near-net-shape, pre-processed contact body after post-processing using a SPS process.
  • the inner contour of the matrix thus forms at least the peripheral contour of the near-net-shape pre-processed contact body, so that in the radial direction of the near-net-shape pre-processed contact body there is no change in shape or only a minimal change in shape, i.e. a change in shape is largely prevented.
  • a minimal change in shape is to be understood as meaning a change in length of less than 5%, preferably less than 2%, particularly preferably less than 1%, in a radial direction.
  • the contact body can preferably be a contact disk, a contact carrier or a complete contact.
  • Post-compacting in the axial direction means increasing the density of the contact body from, for example, 95% to 98% of the density of the contact body in relation to the theoretical density of a solid body, i.e. a body made of solid material, i.e. a non-porous body that is not produced by sintering but was produced by, for example, casting or forming.
  • Such post-compacted, near-net-shape, pre-processed contact bodies are particularly inexpensive to manufacture, have little or no need for reworking, show less wear and are less prone to errors, with a simultaneous high degree of freedom in shaping and material composition and the associated mechanical, electrical and thermal properties .
  • the near-net-shape pre-processed contact body has been produced by sintering, in particular by pressureless sintering.
  • Pressureless sintering is to be understood as meaning both sintering processes that do not require additional pressure being exerted on the sintered body, here the contact body, or else the pressure exerted on the sintered body is less than 5 MPa, in particular less than 2 MPa.
  • the near-net-shape, pre-processed contact body has been produced by pressureless sintering and has one or more recesses, the recesses in the radial extension of the near-net-shape, pre-processed contact body being completely filled in each case with one or more placeholder elements and in the axial direction with one or not be fully populated by the multiple placeholder elements.
  • the missing filling is as far away as possible from the arc running surface, ie in particular the arc running surface of the contact disk.
  • the lack of filling is arranged on the side opposite the arc running surface.
  • the lack of filling can also be arranged on the side of the arc running surface and on the side opposite the arc running surface.
  • the missing filling can be arranged on the side of the arc running surface.
  • the one or more recesses are one or more of:
  • Slits are in particular slits in the arc running surface, i.e. in particular the contact disc, and/or slits in the lateral surface of the contact body. pers to magnetic field generation .
  • Indentations are preferably, for example, indentations in the center of the arc running surface, ie in particular the contact disk, and/or in other areas of the arc running surface, ie in particular the contact disk.
  • One or more through openings are particularly preferred for holding and mounting the contact body.
  • the one or more placeholder elements are formed with metal or with metal alloys.
  • the metal or the metal alloys of the placeholder elements are formed from or with high-strength steels or refractory metals, in particular molybdenum, TZM and/or tungsten, or the oxides, carbides or nitrides of refractory metals.
  • Refractory metals include, in particular, the high-melting base metals of FIG. subgroup (titanium, zirconium and hafnium), the 5th subgroup (vanadium, niobium and tantalum) and the 6th . Subgroup (chromium, molybdenum and tungsten) to understand.
  • refractory metals can be seen in particular in their high melting point, high conductivity for heat and electricity and low coefficient of thermal expansion. This greatly reduces or eliminates the risk of a material connection between the contact body and the matrix or the contact body, and a high level of reusability is achieved. Additionally, and optionally, the use of separating agents made of graphite, boron nitride and/or titanium diboride prevents sintering of the placeholder elements with the contact body and/or the matrix. A coating of the placeholder elements with graphite, Borni- trid and/or titanium diboride to prevent the sintering of the placeholder elements with the contact body and/or the matrix.
  • the one or more placeholder elements consist of preformed bodies that are introduced into the one or more recesses before the SPS process.
  • Such preformed bodies reproduce the inner contour of a recess to be filled alone or in their majority and thus enable a method that is less labor-intensive and not prone to errors.
  • the one or more placeholder elements consist of powder or powders that are introduced into the one or more recesses before the SPS process. In this way, a wide variety of geometries can be filled without having to produce a separate form for the placeholder elements for each geometry. It is particularly advantageous to coat the powder forming the placeholder elements with graphite, boron nitride and/or titanium diboride in order to prevent the placeholder elements from sintering with the contact body and/or the die.
  • the powder or powders are post-compacted after being introduced and before the SPS process.
  • the post-compacting achieves a high packing density and thus low compressibility of the placeholder element(s) formed from powder.
  • the introduction of the powder or powders and the post-compacting of the powder or powders introduced are repeated several times. In this way the packing density is further increased and a low compressibility of the placeholder element or elements formed from powder is achieved. It is also preferred that the maximum temperature of the near-net-contour pre-processed contact body in the SPS process does not exceed 99%, preferably 80%, particularly preferably 60%, of the melting temperature of the material of the near-net-contour pre-processed contact body. In the case of alloys or mixtures of materials, the melting point of the material is to be understood as meaning the melting point of the material with the lowest melting point.
  • the maximum temperature of the near-net shape pre-processed contact body is maintained during the SPS process for 30 s to 15 min, preferably for 1 min to 5 min.
  • the heating rate and/or the cooling rate to or from the maximum temperature of the near-net shape preprocessed contact body in the SPS process is from 50K/min to 500K/min, preferably 150K/min ⁇ 10K/min.
  • a uniaxial mechanical pressure along the axial direction of the near-net-contour pre-processed contact body of 5 MPa to 60 MPa, preferably 20 MPa ⁇ 5 MPa, acts on the near-net-shape, pre-processed contact body.
  • a current density of 0.5 A/mm 2 to 5.0 A/mm 2 preferably 1.0 A/mm 2 to 3.0 A/mm 2 , in which the near-net-shape pre-processed contact body is effected.
  • a second embodiment relates to a contact body for a vacuum interrupter, the contact body being produced according to one or more of the above embodiments.
  • Contact bodies produced in this way have various advantageous properties.
  • the density increases from typically 95% TD - theoretical density - for pressureless sintered molded bodies to > 98% TD, i.e. greater than 98% TD, for SPS finalized contact bodies, i.e. also post-compacted contact bodies, which leads to increased mechanical stability and leads to an improvement in electrical conductivity and thermal conductivity.
  • the flexural strength of test elements and contact bodies that have been post-compacted using SPS is also increased by at least 15% compared to pressure-free sintered shaped bodies.
  • an increased tensile strength - in tearing tests - is achieved for post-compacted test elements and contact bodies by at least 15%.
  • a change in the fracture pattern is preferably achieved at the same time, in particular in relation to CuCr, ie copper-chromium, in which there are no or only a few, less than 5%, chromium particles that have been torn out of the copper matrix or are protruding. Instead, it is more preferred that there be a high number of ruptured chromium particles.
  • a reduced contact disk thickness can be or is being achieved.
  • contact bodies produced according to the above statements there is a lower residual porosity compared to shaped bodies sintered without pressure, a recrystallization of a copper material matrix or a silver material matrix and an improvement in the connection between the embedded particles, for example one or more of chromium, carbon, tungsten or other and the material matrix available.
  • the matrix referred to in this paragraph as copper material matrix, silver material matrix or material matrix refers to the material structure of the contact body and not to the matrix in which the contact body is sintered or finalized using SPS - in particular post-compacted.
  • the above changes compared to pressureless sintered shaped bodies result in an improvement in the dielectric properties of the contact bodies, in particular a reduction in the probability of breakdown or a reduction in the restriking rate, since after a closing process of the switch, which has led to at least partial welding of the two contact surfaces of the contact elements - due to the effect of arcing and/or fusible bridges on melted - contact surfaces of the contact elements, when the switch is then opened and thus of separating the two contact elements leads to brittle fracture behavior at the interfaces with inter- , i.e. along the grain boundaries, or . intra-, i.e. in the grains themselves, granular cracking occurs and less ductile deformation of the material matrix and a pulling out of the embedded particles takes place.
  • the SPS finalization enables a reorientation of the textures of these particles, in particular hard particles, in the material matrix, e.g. B. by a “rotation” of platelet-shaped particles, in particular hard material particles, more parallel to the contact surfaces. This also favors the dielectric stability of the contact body during switching processes according to the mechanism described above.
  • the above methods are also suitable in particular for joining a plurality of pre-processed parts of a contact body made of different or identical material compositions to form a monolithic shaped body in order to achieve a type of gradation in the body.
  • combinations of areas with high mechanical resilience, with targeted thermo-mechanical properties, against distortion in the event of a temperature change, good solderability, high electrical current carrying capacity or other things are possible.
  • Contact bodies produced according to the above methods can be identified in particular in cuts, by structural analysis and by chemical analysis--in particular with regard to the presence of doping elements or auxiliary materials from the sintering method.
  • a third embodiment relates to a vacuum interrupter, the vacuum interrupter having one, two or more of the contact bodies according to one or more of the above guides made contains .
  • the contact bodies have the advantages listed above.
  • FIG. 1 Schematic representation of an elevation of a vacuum switching tube
  • FIG. 2 Schematic representation of a contact body
  • FIG. 3 Schematic representation of a contact body in a die for the SPS process
  • FIG. 4 Schematic sectional view of a contact body in a device for a PLC process
  • FIG. 5 Flow chart of a production method according to the invention.
  • FIG. 1 shows a schematic representation of an outline of a vacuum interrupter 10 .
  • the vacuum interrupter 10 has here, for example, a first wall section made of an insulating material 12 , an adjoining second wall section made of a metal 14 and a third wall section made of an insulating material 16 adjoining this.
  • other wall structures are also possible, for example consisting only of an insulating material section, to which flanges for fixed and/or moving contact are connected.
  • the vacuum interrupter 10 also has a fixed contact flange 18 and a moving contact flange 20 .
  • the fixed contact rod 24 is arranged on the fixed contact flange 18 .
  • the moving contact rod 26 is passed through the moving contact flange 20 , the moving contact rod 26 being connected gas-tight to the moving contact flange 20 via a bellows 22 , so that the moving contact rod 26 is movably arranged along the axial direction 202 .
  • one contact body 100 is arranged on the fixed contact rod 24 and on the moving contact rod 26 in the vacuum interrupter 10 .
  • the contact bodies 100 are designed as rotating bodies and have a radial extent 201 and an axial extent in an axial direction 202 .
  • the contact bodies 100 are also designed here as fixed contact bodies on the fixed contact rod 24 and as moving contact bodies on the moving contact rod 26 .
  • FIG. 2 shows a schematic representation of a contact body 100 which is formed with a contact disk 110 and a contact carrier 120 .
  • the contact disk 110 has recesses 210 and a central recess 210 in the radial direction 201 .
  • the contact carrier 120 has spiral-shaped recesses 210 .
  • the recesses 210 in the contact carrier 120 are used to generate a magnetic field in order to support an arc extinguishing process.
  • the radially aligned recesses 210 are used to influence a migration of the base points of an arc and/or the eddy current reduction tion and the centrally arranged recess 210 serves to prevent the formation of an arc in the center of the contact disk 110 .
  • FIG. 3 shows a schematic representation of a contact body 200 in a matrix 300 for the SPS process.
  • the die 300 can protrude in the axial direction 202 beyond the near-net-shape, pre-processed contact body 200, not shown here, or end flush, shown here for the sake of simplicity.
  • the die 300 delimits the near-net-shape pre-processed contact body 200 during a SPS process in the radial expansion 201, so that a change in shape in the radial directions - the radial expansion 201 - is prevented or largely prevented, i.e. in the radial expansion 201 there is no or there are only minimal changes in length.
  • placeholder elements 400 are arranged in the recesses 210 ; two recesses 210 are shown here, which are filled with placeholder elements 400 .
  • the placeholder elements 400 preferably do not extend over the entire axial extent 202 of the recesses 210 . In this way, a targeted densification of the near-net-shape, pre-processed contact body is achieved with the SPS process.
  • an optionally present central recess 210 in the contact disk 110 is also completely filled with a placeholder element 400 in the radial extent 201, with the placeholder element 400 preferably not extending over the entire axial extent 202 of the central recess 210 extends.
  • FIG. 4 shows a schematic sectional illustration of a near-net-shape pre-processed contact body 200 in a device for a PLC process.
  • the near-net-shape, pre-processed contact body 200 consists here of simplicity 2, but obviously the process can also be carried out with a contact body 200 that is constructed analogously to FIG. 2 or otherwise.
  • the device has a matrix 300 in which the near-net-shape preprocessed contact body 200 is inserted, with a placeholder element 400 optionally being inserted in the optional recess 210, with the placeholder element 400 completely covering the recess 210 of the near-net-shape preprocessed contact body 200 in the radial extent 201 and the recess is not completely filled in the axial direction 202 , ie sufficient space remains for a post-compaction of the preprocessed contact body 200 that is near the final shape.
  • a first stamp 350 and a second stamp 360 are used to apply pressure, in particular a uniaxial pressure in the axial direction 202, to the near-net-shape, pre-processed contact body 200 and also to generate a current flow through the near-net-shape, pre-processed contact body 200.
  • the current flow also serves to generate Joule heat in order to achieve the target process temperature for the SPS process. Additionally and optionally, further heating methods, not shown here, can support the process.
  • FIG. 5 shows a schematic sequence of a production process according to the invention for a contact body 100 in a flow chart.
  • the process steps 1100 , 1200 , 1300 , 1400 , 1500 listed below are a structure that indicate a sequence. A further subdivision of the process steps is possible, but not undertaken here for reasons of clarity.
  • a near-net-shape, pre-processed contact body 200 is produced, preferably by pressureless sintering from one or more powder materials.
  • the near-net-shape, pre-processed contact body 200 produced in this way is placed in a die 300 - which is particularly suitable for withstanding the process parameters of the SPS process, without connecting to the near-net-shape, pre-processed contact body 200, in particular in a coherent manner to connect - and optionally, recesses 210 are filled with placeholder elements 400, the recesses 210 in the radial extent 201 of the near-net-shape preprocessed contact body 200 being completely filled with one or more placeholder elements 400 each and in the axial direction 202 with the one or more placeholder elements 400 cannot be filled completely.
  • the second process step 1200 can take place outside of a PLC system, in the PLC system or outside of the PLC system, but in connection with other components of the PLC system.
  • a first punch 350 and/or a second punch 360 and/or a carrier element (not shown) for the die 300 and/or the first punch 350 and/or the second punch 360 can already be arranged on the die 300 .
  • the matrix 300 with the near-net-shape, pre-processed contact body 200 and the placeholder elements 400 possibly introduced into the SPS system with the first punch 350 and/or the second punch 360 and/or the carrier element for the die 300 .
  • a third process step 1300 the PLC process is carried out in the PLC system, with one or more of the following parameters, process parameters, preferably being used:
  • the maximum temperature of the near-net-shape pre-processed contact body 200 in the SPS process is no more than 99%, preferably 80%, particularly preferably 60%, the melting temperature of the material of the near-net-shape pre-processed contact body 200, the melting temperature relates to how stated above , if necessary . to the melting temperature of the material with the lowest melting point;
  • the heating rate and/or the cooling rate to or from the maximum temperature of the near-net-shape pre-processed contact body 200 is in the SPS process from 50K/min to 500K/min, preferably 150K/min ⁇ 10K/min;
  • a uniaxial mechanical pressure along the axial direction 202 of the near-net-contour pre-processed contact body 200 of 5 MPa to 60 MPa is preferred
  • a fourth process step 1400 the contact body 100, which was formed from the near-net-shape pre-processed contact body 200 in the third process step 1300, is removed from the PLC system and from the die.
  • a fifth process step 1500 the placeholder elements 400 are removed from the contact body 100, i.e. removed, the contact body 100 is optionally checked for errors, defects and other imperfections and, if necessary, minor rework is carried out on the contact body 100, the rework being, for example, the removal of burrs and/or or other traces on surfaces of the contact body 100 from that Manufacturing process, in particular from the SPS process included.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Switches (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un élément de contact (100) d'un interrupteur à vide (10), caractérisé en ce que : l'élément de contact (100) est conçu pour effectuer des actions de commutation dans l'interrupteur à vide (10) pour des applications basse, moyenne et/ou haute tension, et l'élément de contact (100) est formé à partir d'un élément de contact prétraité (200) qui est proche de la forme finale ; l'élément de contact (100) et l'élément de contact prétraité (200) qui est proche de la forme finale ont une étendue radiale (201) et une étendue axiale (202) ; et l'élément de contact prétraité (200) qui est proche de la forme finale est finalisé à l'aide d'un procédé SPS (frittage plasma par étincelles).
PCT/EP2022/074457 2021-09-28 2022-09-02 Procédé de fabrication d'un élément de contact d'un interrupteur à vide, élément de contact pour un interrupteur à vide et interrupteur à vide comportant un tel élément de contact Ceased WO2023052034A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280065028.6A CN118043927A (zh) 2021-09-28 2022-09-02 真空开关管的触头件的制造方法、用于真空开关管的触头件和具有触头件的真空开关管
EP22773184.1A EP4385051A1 (fr) 2021-09-28 2022-09-02 Procédé de fabrication d'un élément de contact d'un interrupteur à vide, élément de contact pour un interrupteur à vide et interrupteur à vide comportant un tel élément de contact

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021210839.3A DE102021210839A1 (de) 2021-09-28 2021-09-28 Herstellungsverfahren für einen Kontaktkörper einer Vakuumschaltröhre, Kontaktkörper für eine Vakuumschaltröhre und Vakuumschaltröhre mit einem solchen Kontaktkörper
DE102021210839.3 2021-09-28

Publications (1)

Publication Number Publication Date
WO2023052034A1 true WO2023052034A1 (fr) 2023-04-06

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PCT/EP2022/074457 Ceased WO2023052034A1 (fr) 2021-09-28 2022-09-02 Procédé de fabrication d'un élément de contact d'un interrupteur à vide, élément de contact pour un interrupteur à vide et interrupteur à vide comportant un tel élément de contact

Country Status (4)

Country Link
EP (1) EP4385051A1 (fr)
CN (1) CN118043927A (fr)
DE (1) DE102021210839A1 (fr)
WO (1) WO2023052034A1 (fr)

Cited By (1)

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