EP3824534A1 - Method for sintering a multicomponent object to be sintered, electric machine, and electric vehicle - Google Patents

Method for sintering a multicomponent object to be sintered, electric machine, and electric vehicle

Info

Publication number
EP3824534A1
EP3824534A1 EP19778798.9A EP19778798A EP3824534A1 EP 3824534 A1 EP3824534 A1 EP 3824534A1 EP 19778798 A EP19778798 A EP 19778798A EP 3824534 A1 EP3824534 A1 EP 3824534A1
Authority
EP
European Patent Office
Prior art keywords
component
sintering
sintered
sheet
magnetic
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.)
Pending
Application number
EP19778798.9A
Other languages
German (de)
French (fr)
Inventor
Carsten Schuh
Thomas Soller
Rolf Vollmer
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Publication of EP3824534A1 publication Critical patent/EP3824534A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • 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
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • 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
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H02K3/487—Slot-closing devices
    • H02K3/493—Slot-closing devices magnetic
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/005—Article surface comprising protrusions
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the invention relates to a method for sintering a multi-component sintered product, an electrical machine and an electrical vehicle.
  • a new process for the production of magnetic sheets for electrical machines uses stencil printing.
  • a printing paste is first produced, which is then processed using a stencil printing technique to form a green body in the form of a thick layer.
  • This green body is then subjected to thermal treatment, i.e. by means of debinding and sintering, converted into a metallic, structured sheet in the form of a magnetic sheet.
  • a first component formed with a first material is provided with at least one recess, i.e. with one or more recesses, printed for a second component and a second component formed with a second material is inserted into the recess or recesses of the first component and the first and second components are shrunk together by means of sintering.
  • Shrking means that due to different sintering shrinkage with a corresponding geometry of the first and second components, a firm connection of the first and second components is achieved.
  • materials with significantly different sintering shrinkages can be sintered together to form a distortion-free and dense sintered product with high mechanical strength, in particular at the limits of the first component and the second component.
  • materials which are difficult to sinter or which are difficult to obtain in powder form can also advantageously form components in multicomponent sintered materials.
  • Magnetic materials that are particularly difficult to sinter can be easily sintered to a multi-component sintered product by the method according to the invention.
  • the sintered product expediently forms a layer, in particular a magnetic sheet, ie the method according to the invention is a method for sintering such a layer.
  • the magnetic sheet is preferably a rotor sheet or a stator sheet.
  • Magnetic sheets can expediently be produced, which comprise pre-manufactured laminates and / or fiber composite materials.
  • the second component is preferably a stamped component and / or a presintered structure.
  • flux-guiding areas of magnetic sheets are expediently formed by means of the second component.
  • the first component is preferably printed with at least one such recess which surrounds or frames the second component.
  • the first component is particularly preferably formed with at least one toothed and / or stepped recess.
  • the connection of the first component and the second component can be additionally improved by positive locking as a result of the at least one toothed and / or stepped recess.
  • a first component with a more pronounced sintering shrinkage than the second component is advantageously used.
  • the first component shrinks during sintering the second component inserted in recesses of the first components.
  • the second component is expediently printed before the first and second components are sintered. In this way, geometries of the first and second components, which are also difficult to implement conventionally, can be produced.
  • the second component in particular made of sheet metal and / or by means of a laser, is punched or cut before the first and second components are sintered together.
  • stamped parts can be easily manufactured as second components and processed into a multi-component sinter.
  • the first component is preferably non-magnetic.
  • the second component is suitable in the method according to the invention in a soft magnetic and / or electrically conductive and / or permanent magnetic manner. In this way, magnetic flux-conducting or field-generating components of a magnetic sheet can be manufactured using the method according to the invention.
  • the first and second components are advantageously pressed together and / or laminated.
  • a further improved connection of the first and second components can be achieved and the positive and / or frictional connection of the first and second components can be increased.
  • the sin terzeug is a layer, ideally a magnetic sheet, such as a rotor and / or stator sheet.
  • sintering is particularly advantageously carried out by means of a sintering tool which has a sintering surface for contacting the sintered product, in which case Process the surface of the sintered product is vibrated during sintering, for example by means of surface acoustic waves.
  • a sintering tool which has a sintering surface for contacting the sintered product, in which case Process the surface of the sintered product is vibrated during sintering, for example by means of surface acoustic waves.
  • the electrical machine according to the invention has a rotor, formed with rotor laminations and / or a stator, formed with stator laminations, which are manufactured by means of a method according to the invention as described above.
  • the electric vehicle according to the invention is in particular a hybrid electric plane and has such OF INVENTION ⁇ dung correct electrical machine.
  • Fig. 1 a according to the invention manufactured magnet sheet comprising a first and a second Components ⁇ te schematically in a plan view,
  • Fig. 2 like a detail of the magnetic sheet produced according to the invention. 1 schematically in a plan view,
  • Fig. 3 like a longitudinal section of the detail.
  • Fig. 1 schematically in a schematic representation ⁇ ,
  • Fig. 4 like an edge of a recess of the first component of the magnetic sheet.
  • Fig. 1 matically in a perspective representation to 3 cal ⁇ ,
  • Fig. 5 shows a further exemplary embodiment of an edge of a recess of the first component of the Magnet sheet like. 1 to 3 schematically in a perspective view
  • Fig. 6 likes to show a further exemplary embodiment of an edge of a recess in the first component of the magnetic sheet. 1 to 3 schematically in a perspective view, and
  • Fig. 7 shows an inventive hybrid electric flight ⁇ convincing with an inventive electric motor with magnetic sheets like.
  • Fig. 1 to 3 schematic table in a schematic diagram.
  • the magnetic sheet 10 produced according to the invention shown in FIG. 1 is a magnetic sheet 10 for forming a rotor egg ner electrical machine in the form of an electric motor.
  • the magnetic sheet 10 is in a manner known per se in essence, ie, unless otherwise described below, is designed as a circular-cylindrical disk which, at least unless otherwise described below, is formed with a magnetically non-flux-conducting material 20.
  • the magnetic ⁇ plate is provided for rotating the rotor about a rotation axis R and is formed, the center of the circular-shaped outer contour ⁇ that of the magnetic sheet 10 is located on the Rota ⁇ tion axis R.
  • the magnetic plate 40 has circumferentially distributed feedthroughs 30 which extend along a section in the circumferential direction which is longer than the dimension of the recess in the radial direction, in the illustrated exemplary embodiment three times as long.
  • the passages 30 of the Mag ⁇ netblechs 10 serve to accommodate permanent magnets or coils for operation of the rotor of the electric motor.
  • the magnet sheet 10 has such in detail E in Fig. 2 Darge ⁇ provides to the circumferential locations of the bushings 30, according but radially outside of these passages 30, each wells a range from 50pound investigatingdem metal on which extends from the bushings 30 to the radial edge of the magnetic plate 10.
  • the area 50 is framed by the non-flux-conducting material 20 in such a way that the area 50 lying radially outside of the bushings 30 does not assume the shape of a circular sector, but instead the non-flux-conducting material projects from the radial outer edge of the magnetic sheet 10 20 with two projections 55 pointing towards one another in the circumferential direction around the region 50.
  • the projections 55 do not meet circumferentially, but leave a free space for the area 50, so that an area 50 extending from the bushings 30 to the radial edge of the magnetic plate 10 of the magnetic plate 10 is free of non-flux-conducting material 20. In this way, the efficiency of the rotor thus trained is not impaired.
  • the non-flux-conducting material 20 clasps the area 50.
  • the regions 50 are formed at their edge regions, which do not adjoin the bushings 30 or directly on the radial edge of the magnetic plate 10, with a profile stepped in the axial direction R.
  • Fig. 3 ent along a section of the rotor like.
  • Fig. 2 shows ver the edge 40 of the areas 50 along a first axial section of the magnetic plate 10 in the axial direction R and at a subsequent to the first section second axial section of the magnetic plate 10 also in the axial direction R, however, the edge 40 in the second axial section from the edge 40 in the first axial section offset in a direction perpendicular to the extension directions of the edge 40 in the first axial section.
  • non-flux-conducting material 20 and region 50 are toothed in the axial direction R in addition to the circumferential interlocking due to the projections 55.
  • the edge 40 can be serrated in a plane perpendicular to the axial direction R (FIG. 4) or comb-like (FIG. 5) or in the manner of a clamping block (FIG. 6).
  • the edge can also be designed to be wavy.
  • like. 4 to 6 are non-flux-conducting material 20 and the areas 50 are clamped or interlocked with one another and thus positively connected to one another.
  • the edge 40 can also be flanged or provided with a flattening, for example for receiving a projection or collar corresponding to such a flattening.
  • the magnetic sheet willingly. 1 manufactured as follows:
  • the first component is debindered and presintered in a manner known per se.
  • this second step of debinding and presintering of the first component can be omitted.
  • a third method step further areas 50 are made with the flow-guiding material as a further component. prints.
  • the printing of the further areas 50 with the flow-guiding material can also take place in a further, not separately illustrated embodiment, which otherwise corresponds to the embodiment described above, parallel to the printing of the first component with the non-flow-guiding material 20.
  • the third method step therefore does not necessarily have to be carried out after the first method step, but can in principle also take place parallel to the first method step.
  • the printing of the other components with the areas 50 of flux-conducting material takes place spatially separately from the first component with the non-flux-conducting material 20.
  • the other areas 50 can alternatively also be printed directly into the recesses of the first component .
  • a fourth process step the further components are debinded and pre-sintered in a manner known per se.
  • this fourth step of debinding and presintering of the other components can be omitted.
  • the first components of the non-flux-conducting material 20 and the further regions 50 of flux-conducting material are sintered together.
  • the sintering shrinkage of the first component of non-flux-conducting material 20 is greater than the sintering shrinkage of the further regions 50 of flux-conducting material. Therefore, the first component of non-flux-conducting materials 20 shrinks onto the further areas 50 of flux-conducting materials.
  • the further areas 50 of flow-conducting material do not necessarily have to be present as sintered parts.
  • the further areas 50 of flow-guiding material can be Ren, not specifically shown embodiments are available as stamped parts, which are inserted into the recesses of the first component.
  • the first component of non-flux-conducting materials 20 can be shrunk around the stamped parts by means of sintering.
  • the magnetic plates 10 form a rotor of an electrical machine 710 of a hybrid-electric aircraft 720.
  • the magnetic plates 10 can also form a stator of the electrical machine 710.
  • the electric machine 710 forms an electric motor of the hybrid-electric aircraft 720 and is connected to a propeller 730 of the hybrid-electric aircraft 720 in order to drive it.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Composite Materials (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The invention relates to a method for sintering a multicomponent object to be sintered. A first component made of a first material is printed with recesses for a second component, and the second component made of a second material is inserted into the recesses of the first component. The first and second component are shrunk fit onto each other by means of sintering. The electric machine has a rotor, which is made of rotor laminations produced using a method according to one of the aforementioned claims, and the electric vehicle is a hybrid electric airplane in particular and has such an electric machine.

Description

Beschreibung description
Verfahren zum Sintern eines mehrkomponentigen Sinterzeugs, elektrische Maschine und elektrisches Fahrzeug Method for sintering a multi-component sintered product, electric machine and electric vehicle
Die Erfindung betrifft ein Verfahren zum Sintern eines mehr komponentigen Sinterzeugs, eine elektrische Maschine und ein elektrisches Fahrzeug. The invention relates to a method for sintering a multi-component sintered product, an electrical machine and an electrical vehicle.
Ein neues Verfahren zur Herstellung von Magnetblechen für elektrische Maschinen nutzt den Schablonendruck. Bei diesem Verfahren wird ausgehend von Metallpulvern zunächst eine Druckpaste erzeugt, welche dann mittels einer Schablonen drucktechnik zu einem Grünkörper in Gestalt einer Dickschicht verarbeitet wird. Anschließend wird dieser Grünkörper durch thermische Behandlung, d.h. mittels Entbinderung und Sinte rung, in ein metallisches, strukturiertes Blech in Gestalt eines Magnetblechs überführt. A new process for the production of magnetic sheets for electrical machines uses stencil printing. In this method, starting from metal powders, a printing paste is first produced, which is then processed using a stencil printing technique to form a green body in the form of a thick layer. This green body is then subjected to thermal treatment, i.e. by means of debinding and sintering, converted into a metallic, structured sheet in the form of a magnetic sheet.
Es ist bekannt, auch mehrkomponentige Magnetbleche auf solche Weise herzustellen. Dazu werden die verschiedenen Komponenten eines Magnetblechs sequentiell hintereinander auf eine Trä gerplatte gedruckt und danach gemeinsam thermisch behandelt. It is known to also produce multi-component magnetic sheets in this way. For this purpose, the various components of a magnetic sheet are sequentially printed on a carrier plate and then thermally treated together.
Jedoch können nicht sämtliche Werkstoffe auf diese Weise zur Sinterung herangezogen werden. Insbesondere das Sintern von verzugfreiem und dichtem Sinterzeug ist auf diese Weise bis weilen nur schwer zu realisieren. However, not all materials can be used for sintering in this way. In particular, the sintering of warp-free and dense sintered products is sometimes difficult to achieve in this way.
Es ist daher Aufgabe der Erfindung, ein Verfahren zum Sintern eines mehrkomponentigen Sinterzeugs anzugeben, welches die eingangs erwähnten Nachteile überwindet. Ferner ist es Aufga be der Erfindung, eine verbesserte elektrische Maschine und ein verbessertes elektrisches Fahrzeug anzugeben. It is therefore an object of the invention to provide a method for sintering a multi-component sintered product which overcomes the disadvantages mentioned at the outset. It is also an object of the invention to provide an improved electric machine and an improved electric vehicle.
Diese Aufgabe der Erfindung wird mit einem Verfahren zum Sin tern eines mehrkomponentigen Sinterzeugs mit den in Anspruch 1 angegebenen Merkmalen sowie mit einer elektrischen Maschine mit den in Anspruch 12 angegebenen Merkmalen sowie mit einem elektrischen Fahrzeug mit den in Anspruch 13 angegebenen Merkmalen gelöst. Bevorzugte Weiterbildungen der Erfindung sind in den zugehörigen Unteransprüchen, der nachfolgenden Beschreibung und der Zeichnung angegeben. This object of the invention is achieved with a method for sintering a multi-component sintered product with the features specified in claim 1 and with an electrical machine solved with the features specified in claim 12 and with an electric vehicle with the features specified in claim 13. Preferred developments of the invention are specified in the associated subclaims, the following description and the drawing.
Bei dem erfindungsgemäßen Verfahren zum Sintern eines mehr- komponentigen Sinterzeugs wird eine mit einem ersten Material gebildete erste Komponente mit mindestens einer Ausnehmung, d.h. mit einer oder mehreren Ausnehmungen, für eine zweite Komponente gedruckt und es wird eine mit einem zweiten Mate rial gebildete zweite Komponente in die Ausnehmung oder Aus nehmungen der ersten Komponente eingelegt und es werden erste und zweite Komponente mittels Sinterns aneinander ange schrumpft. Anschrumpfen meint dabei, dass aufgrund unter schiedlichen Sinterschwunds bei entsprechender Geometrie von erster und zweiter Komponente eine feste Verbindung von ers ter und zweiter Komponente erreicht wird. In the method according to the invention for sintering a multi-component sintered product, a first component formed with a first material is provided with at least one recess, i.e. with one or more recesses, printed for a second component and a second component formed with a second material is inserted into the recess or recesses of the first component and the first and second components are shrunk together by means of sintering. Shrinking means that due to different sintering shrinkage with a corresponding geometry of the first and second components, a firm connection of the first and second components is achieved.
Erfindungsgemäß können Materialien mit deutlich verschiedenen Sinterschwindungen miteinander zu einem verzugsfreien und dichten Sinterzeug mit hoher mechanischer Festigkeit, insbe sondere an Grenzen von erster Komponente und zweiter Kompo nente, gesintert werden. According to the invention, materials with significantly different sintering shrinkages can be sintered together to form a distortion-free and dense sintered product with high mechanical strength, in particular at the limits of the first component and the second component.
Mittels des erfindungsgemäßen Verfahrens können vorteilhaft auch schwer sinterbare oder nur schwer in Pulverform erhält liche Materialien Komponenten in mehrkomponentigen Sinterzeu gen bilden. Insbesondere schwer sinterbare magnetische Mate rialien können mittels des erfindungsgemäßen Verfahrens leicht zu einem mehrkomponentigen Sinterzeug gesintert wer den . By means of the method according to the invention, materials which are difficult to sinter or which are difficult to obtain in powder form can also advantageously form components in multicomponent sintered materials. Magnetic materials that are particularly difficult to sinter can be easily sintered to a multi-component sintered product by the method according to the invention.
Ferner können mittels der gemeinsamen Sinterung von erster und zweiter Komponente Prozessschritte bei der Fertigung se pariert und parallelisiert werden, sodass der Auslastungsgrad der eingesetzten Maschinen deutlich erhöht ist. Zweckmäßig bildet bei dem erfindungsgemäßen Verfahren das Sinterzeug eine Schicht, insbesondere ein Magnetblech, d.h. das erfindungsgemäße Verfahren ist ein Verfahren zum Sintern einer solchen Schicht. Vorzugsweise ist das Magnetblech ein Rotorblech oder ein Statorblech. Furthermore, by sintering the first and second components together, process steps in production can be separated and parallelized, so that the degree of utilization of the machines used is significantly increased. In the method according to the invention, the sintered product expediently forms a layer, in particular a magnetic sheet, ie the method according to the invention is a method for sintering such a layer. The magnetic sheet is preferably a rotor sheet or a stator sheet.
Mittels des erfindungsgemäßen Verfahrens lassen sich insbe sondere Magnetbleche fertigen, welche ein Rotorblech und/oder ein Statorblech bilden und welche in einer radialen Richtung strukturiert sind und insbesondere in einer radialen Richtung eine Abfolge von erster und zweiter Komponente aufweisen. Zweckmäßig lassen sich Magnetbleche fertigen, welche vorge fertigte Laminate und/oder Faserverbundwerkstoffe umfassen. By means of the method according to the invention, in particular special magnetic sheets can be produced which form a rotor sheet and / or a stator sheet and which are structured in a radial direction and in particular have a sequence of first and second components in a radial direction. Magnetic sheets can expediently be produced, which comprise pre-manufactured laminates and / or fiber composite materials.
Vorzugsweise ist die zweite Komponente eine gestanzte Kompo nente und/oder eine vorgesinterte Struktur. Zweckmäßig sind etwa flussführende Bereiche von Magnetblechen mittels der zweiten Komponente gebildet. The second component is preferably a stamped component and / or a presintered structure. For example, flux-guiding areas of magnetic sheets are expediently formed by means of the second component.
Bevorzugt wird bei dem erfindungsgemäßen Verfahren die erste Komponente mit mindestens einer solchen Ausnehmungen ge druckt, welche die zweite Komponente umgreift oder umrahmt. In the method according to the invention, the first component is preferably printed with at least one such recess which surrounds or frames the second component.
Besonders bevorzugt wird bei dem erfindungsgemäßen Verfahren die erste Komponente mit mindestens einer gezahnten und/oder gestuften Ausnehmung gebildet. Auf diese Weise lässt sich die Verbindung der ersten Komponente und der zweiten Komponente durch Formschluss infolge der mindestens einen gezahnten und/oder gestuften Ausnehmung zusätzlich verbessern. In the method according to the invention, the first component is particularly preferably formed with at least one toothed and / or stepped recess. In this way, the connection of the first component and the second component can be additionally improved by positive locking as a result of the at least one toothed and / or stepped recess.
Vorteilhaft wird bei dem Verfahren gemäß der Erfindung eine erste Komponente mit einer im Vergleich zur zweiten Komponen te ausgeprägteren Sinterschwindung herangezogen. Auf diese Weise umschrumpft die erste Komponente beim Sintern die zwei te, in Ausnehmungen der ersten Komponenten eingelegte, Kompo nente . Zweckmäßig wird bei dem erfindungsgemäßen Verfahren die zwei te Komponente gedruckt, bevor erste und zweite Komponente ge sintert werden. Auf diese Weise sind auch konventionell schwer realisierbare Geometrien von erster und zweiter Kompo nente fertigbar. In the method according to the invention, a first component with a more pronounced sintering shrinkage than the second component is advantageously used. In this way, the first component shrinks during sintering the second component inserted in recesses of the first components. In the method according to the invention, the second component is expediently printed before the first and second components are sintered. In this way, geometries of the first and second components, which are also difficult to implement conventionally, can be produced.
In einer vorteilhaften Weiterbildung des Verfahrens gemäß der Erfindung wird die zweite Komponente, insbesondere aus einem Blech und/oder mittels eines Lasers, gestanzt oder geschnit ten, bevor erste und zweite Komponente gemeinsam gesintert werden. Auf diese Weise können einfach Stanzteile als zweite Komponenten gefertigt und zu einem mehrkomponentigen Sinter zeug verarbeitet werden. In an advantageous development of the method according to the invention, the second component, in particular made of sheet metal and / or by means of a laser, is punched or cut before the first and second components are sintered together. In this way, stamped parts can be easily manufactured as second components and processed into a multi-component sinter.
Bei dem erfindungsgemäßen Verfahren ist die erste Komponente vorzugsweise amagnetisch. In the method according to the invention, the first component is preferably non-magnetic.
Geeignet ist bei dem Verfahren gemäß der Erfindung die zweite Komponente weichmagnetisch und/oder elektrisch leitend und/oder permanentmagnetisch. Auf diese Weise können magne tisch flussführende oder felderzeugende Bestandteile eines Magnetblechs mittels des erfindungsgemäßen Verfahrens gefer tigt werden. The second component is suitable in the method according to the invention in a soft magnetic and / or electrically conductive and / or permanent magnetic manner. In this way, magnetic flux-conducting or field-generating components of a magnetic sheet can be manufactured using the method according to the invention.
Vorteilhaft werden bei dem erfindungsgemäßen Verfahren erste und zweite Komponente, vorzugsweise uniaxial oder isosta tisch, aneinander gepresst und/oder laminiert. Auf diese Wei se kann eine weiter verbesserte Verbindung von erster und zweiter Komponente erreicht werden und der Form- und/oder Kraftschluss von erster und zweiter Komponente erhöht werden. In the method according to the invention, the first and second components, preferably uniaxially or isostatically, are advantageously pressed together and / or laminated. In this way, a further improved connection of the first and second components can be achieved and the positive and / or frictional connection of the first and second components can be increased.
Vorzugsweise ist bei dem erfindungsgemäßen Verfahren das Sin terzeug eine Schicht, idealerweise ein Magnetblech, etwa ein Rotor- und/oder Statorblech. Preferably, in the method according to the invention, the sin terzeug is a layer, ideally a magnetic sheet, such as a rotor and / or stator sheet.
Besonders vorteilhaft wird bei dem erfindungsgemäßen Verfah ren mittels eines Sinterwerkzeugs gesintert, das eine Sinter zeugfläche zur Anlage des Sinterzeugs aufweist, wobei bei dem Verfahren die Sinterzeugflache beim Sintern, etwa mittels akustischer Oberflächenwellen, in Vibration versetzt wird. In dieser Weiterbildung der Erfindung lässt sich das kraft- und/oder formschlüssige Anhaften von Sinterzeug an der Sin terzeugfläche mittels der Vibration leicht vermeiden. In the method according to the invention, sintering is particularly advantageously carried out by means of a sintering tool which has a sintering surface for contacting the sintered product, in which case Process the surface of the sintered product is vibrated during sintering, for example by means of surface acoustic waves. In this development of the invention, the non-positive and / or positive adhesion of sintered material to the surface of the sinter can be easily avoided by means of the vibration.
Die erfindungsgemäße elektrische Maschine weist einen Rotor, gebildet mit Rotorblechen und/oder einen Stator, gebildet mit Statorblechen auf, die mittels eines erfindungsgemäßen Ver fahrens wie vorhergehend beschrieben gefertigt sind. The electrical machine according to the invention has a rotor, formed with rotor laminations and / or a stator, formed with stator laminations, which are manufactured by means of a method according to the invention as described above.
Das erfindungsgemäße elektrische Fahrzeug ist insbesondere ein hybridelektrisches Flugzeug und weist eine solche erfin¬ dungsgemäße elektrische Maschine auf. The electric vehicle according to the invention is in particular a hybrid electric plane and has such OF INVENTION ¬ dung correct electrical machine.
Nachfolgend wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing.
Es zeigen: Show it:
Fig. 1 ein erfindungsgemäß gefertigtes Magnetblech umfassend eine erste und eine zweite Komponen¬ te schematisch in einer Draufsicht, Fig. 1 a according to the invention manufactured magnet sheet comprising a first and a second Components ¬ te schematically in a plan view,
Fig . 2 eine Einzelheit des erfindungsgemäß gefertig¬ ten Magnetblechs gern. Fig. 1 schematisch in einer Draufsicht, Fig. 2 like a detail of the magnetic sheet produced according to the invention. 1 schematically in a plan view,
Fig . 3 einen Längsschnitt der Einzelheit gern. Fig. 2 des Magnetblechs gern. Fig. 1 in einer schema¬ tischen Darstellung, Fig. 3 like a longitudinal section of the detail. Fig. 2 of the magnetic sheet like. Fig. 1 schematically in a schematic representation ¬,
Fig. 4 einen Rand einer Ausnehmung der ersten Kompo nente des Magnetblechs gern. Fig. 1 bis 3 sche¬ matisch in einer perspektivischen Darstellung, Fig. 4 like an edge of a recess of the first component of the magnetic sheet. Fig. 1 matically in a perspective representation to 3 cal ¬,
Fig . 5 ein weiteres Ausführungsbeispiel eines Rands einer Ausnehmung der ersten Komponente des Magnetblechs gern. Fig. 1 bis 3 schematisch in einer perspektivischen Darstellung, Fig. 5 shows a further exemplary embodiment of an edge of a recess of the first component of the Magnet sheet like. 1 to 3 schematically in a perspective view,
Fig . 6 ein weiteres Ausführungsbeispiel eines Rands einer Ausnehmung der ersten Komponente des Magnetblechs gern. Fig. 1 bis 3 schematisch in einer perspektivischen Darstellung, sowie Fig. 6 likes to show a further exemplary embodiment of an edge of a recess in the first component of the magnetic sheet. 1 to 3 schematically in a perspective view, and
Fig. 7 ein erfindungsgemäßes hybridelektrisches Flug¬ zeug mit einem erfindungsgemäßen Elektromotor mit Magnetblechen gern. Fig. 1 bis 3 schema tisch in einer Prinzipskizze. Fig. 7 shows an inventive hybrid electric flight ¬ convincing with an inventive electric motor with magnetic sheets like. Fig. 1 to 3 schematic table in a schematic diagram.
Das in Fig. 1 dargestellte erfindungsgemäß gefertigte Magnet¬ blech 10 ist ein Magnetblech 10 zur Bildung eines Rotors ei ner elektrischen Maschine in Gestalt eines Elektromotors. Das Magnetblech 10 ist in an sich bekannter Weise im Wesentli chen, d.h. soweit nachfolgend nicht anders beschrieben, als kreiszylindrische Scheibe ausgebildet, die, zumindest soweit nachfolgend nicht anders beschrieben, mit einem magnetisch nicht-flussleitendem Material 20 gebildet ist. Das Magnet¬ blech ist zur Drehung des Rotors um eine Rotationsachse R vorgesehen und ausgebildet, d.h. der Mittelpunkt der kreis¬ förmigen Außenkontur des Magnetblechs 10 liegt auf der Rota¬ tionsachse R. The magnetic sheet 10 produced according to the invention shown in FIG. 1 is a magnetic sheet 10 for forming a rotor egg ner electrical machine in the form of an electric motor. The magnetic sheet 10 is in a manner known per se in essence, ie, unless otherwise described below, is designed as a circular-cylindrical disk which, at least unless otherwise described below, is formed with a magnetically non-flux-conducting material 20. The magnetic ¬ plate is provided for rotating the rotor about a rotation axis R and is formed, the center of the circular-shaped outer contour ¬ that of the magnetic sheet 10 is located on the Rota ¬ tion axis R.
Das Magnetblech 40 weist umfänglich verteilt Durchführungen 30 auf, welche sich entlang eines Abschnitts in umfänglicher Richtung erstrecken, welcher länger ist als die Abmessung der Ausnehmung in radialer Richtung, im dargestellten Ausfüh rungsbeispiel dreimal so lang. Die Durchführungen 30 des Mag¬ netblechs 10 dienen zur Aufnahme von Permanentmagneten oder von Spulen zum Betrieb des Rotors des Elektromotors. The magnetic plate 40 has circumferentially distributed feedthroughs 30 which extend along a section in the circumferential direction which is longer than the dimension of the recess in the radial direction, in the illustrated exemplary embodiment three times as long. The passages 30 of the Mag ¬ netblechs 10 serve to accommodate permanent magnets or coils for operation of the rotor of the electric motor.
Das Magnetblech 10 weist wie in Einzelheit E in Fig. 2 darge¬ stellt an den umfänglichen Orten der Durchführungen 30, je doch radial außenliegend von diesen Durchführungen 30, je weils einen Bereich 50 aus flussleitendem Metall auf, welcher sich von den Durchführungen 30 bis hin zum radialen Rand des Magnetblechs 10 erstreckt. The magnet sheet 10 has such in detail E in Fig. 2 Darge ¬ provides to the circumferential locations of the bushings 30, according but radially outside of these passages 30, each weils a range from 50 flussleitendem metal on which extends from the bushings 30 to the radial edge of the magnetic plate 10.
Der Bereich 50 ist von dem nicht-flussleitenden Material 20 derart eingerahmt, dass der Bereich 50 radial außenliegend von den Durchführungen 30 nicht etwa die Gestalt eines Kreis sektors einnimmt, sondern stattdessen ragt am radialen äuße ren Rand des Magnetblechs 10 jeweils das nicht-flussleitende Material 20 mit zwei in umfänglicher Richtung aufeinander zu weisenden Vorsprüngen 55 um den Bereich 50 herum aufeinander zu. Die Vorsprünge 55 treffen dabei umfänglich nicht zusam men, sondern lassen umfänglich einen Freiraum für den Bereich 50, sodass ein sich von den Durchführungen 30 bis zum radia len Rand des Magnetblechs 10 erstreckender Bereich 50 des Magnetblechs 10 von nicht-flussleitendem Material 20 frei bleibt. Auf diese Weise ist die Effizienz des so ausgebilde ten Rotors nicht beeinträchtigt. Infolge der Vorsprünge 55 umklammert das nicht-flussleitende Material 20 den Bereich 50. The area 50 is framed by the non-flux-conducting material 20 in such a way that the area 50 lying radially outside of the bushings 30 does not assume the shape of a circular sector, but instead the non-flux-conducting material projects from the radial outer edge of the magnetic sheet 10 20 with two projections 55 pointing towards one another in the circumferential direction around the region 50. The projections 55 do not meet circumferentially, but leave a free space for the area 50, so that an area 50 extending from the bushings 30 to the radial edge of the magnetic plate 10 of the magnetic plate 10 is free of non-flux-conducting material 20. In this way, the efficiency of the rotor thus trained is not impaired. As a result of the projections 55, the non-flux-conducting material 20 clasps the area 50.
Ferner sind die Bereiche 50 an ihren Randbereichen, welche nicht an die Durchführungen 30 oder direkt an den radialen Rand des Magnetblechs 10 angrenzen, mit einem in axialer Richtung R gestuften Profil ausgebildet. Wie in Fig. 3 ent lang eines Schnitts des Rotors gern. Fig. 2 dargestellt ver läuft der Rand 40 der Bereiche 50 entlang eines ersten axia len Abschnitts des Magnetblechs 10 in axialer Richtung R und an einem sich an den ersten Abschnitt anschließenden zweiten axialen Abschnitt des Magnetblechs 10 ebenfalls in axialer Richtung R, allerdings ist der Rand 40 im zweiten axialen Ab schnitt gegenüber dem Rand 40 im ersten axialen Abschnitt in einer Richtung senkrecht zu den Erstreckungsrichtungen des Randes 40 im ersten axialen Abschnitt versetzt. Aufgrund die ses gestuften Randes 40 zwischen nicht-flussleitendem Materi al 20 und Bereich 50 sind nicht-flussleitendes Material 20 und Bereich 50 neben der umfänglichen Verklammerung aufgrund der Vorsprünge 55 auch in axialer Richtung R miteinander ver zahnt . Zusätzlich kann der Rand 40 in weiteren Ausführungsbeispielen wie in den Fig. 4, 5 und 6 dargestellt in einer Ebene senk recht zur axialen Richtung R gezahnt (Fig. 4) oder kammartig (Fig. 5) oder klemmbausteinartig (Fig. 6) verlaufen. Alterna tiv oder zusätzlich kann der Rand auch wellig ausgebildet sein. In diesen weiteren Ausführungsbeispielen gern. Fig. 4 bis 6 sind nicht-flussleitendes Material 20 sowie die Berei che 50 miteinander verklammert oder verzahnt und somit form schlüssig miteinander verbunden. Furthermore, the regions 50 are formed at their edge regions, which do not adjoin the bushings 30 or directly on the radial edge of the magnetic plate 10, with a profile stepped in the axial direction R. As in Fig. 3 ent along a section of the rotor like. Fig. 2 shows ver the edge 40 of the areas 50 along a first axial section of the magnetic plate 10 in the axial direction R and at a subsequent to the first section second axial section of the magnetic plate 10 also in the axial direction R, however, the edge 40 in the second axial section from the edge 40 in the first axial section offset in a direction perpendicular to the extension directions of the edge 40 in the first axial section. Because of the stepped edge 40 between non-flux-conducting material 20 and region 50, non-flux-conducting material 20 and region 50 are toothed in the axial direction R in addition to the circumferential interlocking due to the projections 55. In addition, in further exemplary embodiments, as shown in FIGS. 4, 5 and 6, the edge 40 can be serrated in a plane perpendicular to the axial direction R (FIG. 4) or comb-like (FIG. 5) or in the manner of a clamping block (FIG. 6). Alternatively or additionally, the edge can also be designed to be wavy. In these other embodiments, like. 4 to 6 are non-flux-conducting material 20 and the areas 50 are clamped or interlocked with one another and thus positively connected to one another.
In weiteren nicht dargestellten Ausführungsbeispielen kann der Rand 40 auch gebördelt oder mit einer Abflachung, etwa zur Aufnahme eines mit einer solchen Abflachung korrespondie renden Vorsprungs oder Kragens, versehen sein. In further exemplary embodiments not shown, the edge 40 can also be flanged or provided with a flattening, for example for receiving a projection or collar corresponding to such a flattening.
Erfindungsgemäß wird das Magnetblech gern. Fig. 1 wie folgt gefertigt : According to the invention, the magnetic sheet willingly. 1 manufactured as follows:
Zunächst werden in einem ersten Verfahrensschritt zur Ferti gung des Magnetblechs 10 die Bereiche aus dem nicht First, in a first process step for the production of the magnetic sheet 10, the areas from which are not
flussleitenden Material 20 gedruckt, welche eine erste zusam menhängende Komponente aus dem nicht-flussleitenden Material 20 bilden. Anschließend wird die erste Komponente getrocknet. Dabei sind an der ersten Komponente Ausnehmungen vorgesehen, welche die Bereiche 50 mit dem flussleitenden Material bilden werden, nachdem die Bereiche 50 mit dem flussleitenden Mate rial gefüllt sind. flux-conducting material 20 printed, which form a first coherent component of the non-flux-conducting material 20. The first component is then dried. Recesses are provided on the first component, which will form the areas 50 with the flow-guiding material after the areas 50 are filled with the flow-guiding material.
In einem zweiten Verfahrensschritt des erfindungsgemäßen Ver fahrens wird die erste Komponente in an sich bekannter Weise entbindert und vorgesintert. In weiteren, nicht eigens be schriebenen Ausführungsbeispielen des erfindungsgemäßen Ver fahrens kann dieser zweite Schritt des Entbinderns und des Vorsinterns der ersten Komponente entfallen. In a second method step of the method according to the invention, the first component is debindered and presintered in a manner known per se. In further, not specifically described exemplary embodiments of the method according to the invention, this second step of debinding and presintering of the first component can be omitted.
In einem dritten Verfahrensschritt werden als weitere Kompo nente weitere Bereiche 50 mit dem flussleitenden Material ge- druckt. Der Druck der weiteren Bereiche 50 mit dem flusslei tenden Material kann in einem weiteren, nicht gesondert dar gestellten Ausführungsbeispiel, welches im Übrigen dem zuvor beschriebenen Ausführungsbeispiel entspricht, auch parallel zum Druck der ersten Komponente mit dem nicht-flussleitenden Material 20 erfolgen. Der dritte Verfahrensschritt muss also nicht zwingend zeitlich nach dem ersten Verfahrensschritt durchgeführt werden, sondern kann grundsätzlich auch zeitlich parallel zum ersten Verfahrensschritt erfolgen. In a third method step, further areas 50 are made with the flow-guiding material as a further component. prints. The printing of the further areas 50 with the flow-guiding material can also take place in a further, not separately illustrated embodiment, which otherwise corresponds to the embodiment described above, parallel to the printing of the first component with the non-flow-guiding material 20. The third method step therefore does not necessarily have to be carried out after the first method step, but can in principle also take place parallel to the first method step.
Der Druck der weiteren Komponenten mit den Bereichen 50 flussleitenden Materials erfolgt im hier beschriebenen Aus führungsbeispiel räumlich separat von der ersten Komponente mit dem nicht-flussleitenden Material 20. Grundsätzlich kön nen alternativ auch die weiteren Bereiche 50 direkt in die Ausnehmungen der ersten Komponente hinein gedruckt werden. In the exemplary embodiment described here, the printing of the other components with the areas 50 of flux-conducting material takes place spatially separately from the first component with the non-flux-conducting material 20. In principle, the other areas 50 can alternatively also be printed directly into the recesses of the first component .
In einem vierten Verfahrensschritt werden die weiteren Kompo nenten in an sich bekannter Weise entbindert und vorgesin tert. In weiteren, nicht eigens beschriebenen Ausführungsbei spielen des erfindungsgemäßen Verfahrens kann dieser vierte Schritt des Entbinderns und des Vorsinterns der weiteren Kom ponenten entfallen. In a fourth process step, the further components are debinded and pre-sintered in a manner known per se. In other, not specifically described exemplary embodiments of the method according to the invention, this fourth step of debinding and presintering of the other components can be omitted.
In einem letzten Verfahrensschritt werden die erste Komponen te aus dem nicht-flussleitenden Material 20 sowie die weite ren Bereiche 50 aus flussleitendem Material gemeinsam gesin tert. Dabei ist die Sinterschwindung der ersten Komponente nicht-flussleitenden Materials 20 größer als die Sinter schwindung der weiteren Bereiche 50 flussleitenden Materials. Daher schrumpft die erste Komponte nicht-flussleitenden Mate rials 20 auf die weiteren Bereiche 50 flussleitenden Materi als auf. In a last method step, the first components of the non-flux-conducting material 20 and the further regions 50 of flux-conducting material are sintered together. The sintering shrinkage of the first component of non-flux-conducting material 20 is greater than the sintering shrinkage of the further regions 50 of flux-conducting material. Therefore, the first component of non-flux-conducting materials 20 shrinks onto the further areas 50 of flux-conducting materials.
In den zuvor beschriebenen Ausführungsbeispielen müssen die weiteren Bereiche 50 flussleitenden Materials nicht zwingend als Sinterteile vorliegen. Alternativ oder zusätzlich können die weiteren Bereiche 50 flussleitenden Materials in weite- ren, nicht eigens dargestellten Ausführungsbeispielen als Stanzteile vorliegen, welche in die Ausnehmungen der ersten Komponente eingelegt werden. Auch in diesen Ausführungsbei spielen kann die erste Komponente nicht-flussleitenden Mate- rials 20 mittels Sinterns um die Stanzteile herum geschrumpft werden . In the exemplary embodiments described above, the further areas 50 of flow-conducting material do not necessarily have to be present as sintered parts. Alternatively or additionally, the further areas 50 of flow-guiding material can be Ren, not specifically shown embodiments are available as stamped parts, which are inserted into the recesses of the first component. In these exemplary embodiments, too, the first component of non-flux-conducting materials 20 can be shrunk around the stamped parts by means of sintering.
Die Magnetbleche 10 bilden wie in Fig. 7 dargestellt einen Rotor einer elektrischen Maschine 710 eines hybridelektri- sehen Flugzeugs 720. In weiteren, nicht eigens dargestellten Ausführungsbeispielen können die Magnetbleche 10 auch einen Stator der elektrischen Maschine 710 bilden. Die elektrische Maschine 710 bildet einen Elektromotor des hybridelektrischen Flugzeugs 720 und ist mit einem Propeller 730 des hybrid- elektrischen Flugzeugs 720 zu dessen Antrieb verbunden. As shown in FIG. 7, the magnetic plates 10 form a rotor of an electrical machine 710 of a hybrid-electric aircraft 720. In further exemplary embodiments, which are not specifically shown, the magnetic plates 10 can also form a stator of the electrical machine 710. The electric machine 710 forms an electric motor of the hybrid-electric aircraft 720 and is connected to a propeller 730 of the hybrid-electric aircraft 720 in order to drive it.

Claims

Patentansprüche Claims
1. Verfahren zum Sintern eines mehrkomponentigen Sinterzeugs (10), bei welchem eine mit einem ersten Material (20) gebil dete erste Komponente mit einer oder mehreren Ausnehmungen für eine zweite Komponente (50) gedruckt wird, eine mit einem zweiten Material gebildete zweite Komponente (50) in die Aus nehmung oder Ausnehmungen der ersten Komponente eingelegt wird und erste und zweite Komponente (50) mittels Sinterns aneinander angeschrumpft werden. 1. A method for sintering a multi-component sintered product (10), in which a first component formed with a first material (20) is printed with one or more recesses for a second component (50), a second component formed with a second material ( 50) is inserted into the recess or recesses of the first component and the first and second components (50) are shrunk together by means of sintering.
2. Verfahren nach dem vorhergehenden Anspruch, bei welchem das Sinterzeug (10) eine Schicht, insbesondere ein Blech und/oder ein Magnetblech, idealerweise ein Rotorblech oder ein Statorblech, bildet. 2. The method according to the preceding claim, in which the sintered product (10) forms a layer, in particular a sheet and / or a magnetic sheet, ideally a rotor sheet or a stator sheet.
3. Verfahren nach dem vorhergehenden Anspruch, bei welchem die erste Komponente mit mindestens einer solchen Ausnehmung gedruckt wird, welche die zweite Komponente (50) umgreift o- der umrahmt. 3. The method according to the preceding claim, in which the first component is printed with at least one such recess which surrounds or frames the second component (50).
4. Verfahren nach dem vorhergehenden Anspruch, bei welchem die erste Komponente mit mindestens einer gezahnten und/oder gestuften Ausnehmung gebildet wird. 4. The method according to the preceding claim, wherein the first component is formed with at least one toothed and / or stepped recess.
5. Verfahren nach einem der vorhergehenden Ansprüche, bei welchem eine erste Komponente mit einer im Vergleich zur zweiten Komponente (50) ausgeprägteren Sinterschwindung her angezogen wird. 5. The method according to any one of the preceding claims, wherein a first component with a more pronounced sintering shrinkage compared to the second component (50) is attracted.
6. Verfahren nach einem der vorhergehenden Ansprüche, bei welchem die zweite Komponente (50) gedruckt wird, bevor erste und zweite Komponente gesintert werden. 6. The method according to any one of the preceding claims, wherein the second component (50) is printed before the first and second components are sintered.
7. Verfahren nach einem der vorhergehenden Ansprüche, bei welchem die zweite Komponente, insbesondere aus einem Blech und/oder mittels eines Lasers, gestanzt oder geschnitten wird, bevor erste und zweite Komponente (50) gemeinsam gesin tert werden. 7. The method according to any one of the preceding claims, wherein the second component, in particular from a sheet and / or by means of a laser, punched or cut is sintered together before the first and second components (50).
8. Verfahren nach einem der vorhergehenden Ansprüche, bei welchem die erste Komponente amagnetisch ist. 8. The method according to any one of the preceding claims, wherein the first component is non-magnetic.
9. Verfahren nach einem der vorhergehenden Ansprüche, bei welchem die zweite Komponente (50) weichmagnetisch und/oder elektrisch leitend und/oder permanentmagnetisch ist. 9. The method according to any one of the preceding claims, wherein the second component (50) is soft magnetic and / or electrically conductive and / or permanent magnetic.
10. Verfahren nach einem der vorhergehenden Ansprüche, bei welchem das Sinterzeug eine Schicht, vorzugsweise ein Magnet blech, ist. 10. The method according to any one of the preceding claims, wherein the sintered product is a layer, preferably a magnetic sheet.
11. Verfahren nach einem der vorhergehenden Ansprüche, bei welchem mittels eines Sinterwerkzeugs gesintert wird, welches eine Sinterzeugflache zur Anlage des Sinterzeugs (10) auf weist und bei welchem die Sinterzeugflache beim Sintern, etwa mittels akustischer Oberflächenwellen, in Vibration versetzt wird . 11. The method according to any one of the preceding claims, in which sintering is carried out by means of a sintering tool which has a sintered product surface for contacting the sintered product (10) and in which the sintered product surface is set in vibration during sintering, for example by means of surface acoustic waves.
12. Elektrische Maschine, aufweisend einen Rotor, gebildet aus nach einem Verfahren nach einem der vorhergehenden An sprüche gefertigten Rotorblechen (10). 12. Electrical machine, comprising a rotor, formed from a method according to one of the preceding claims made on rotor blades (10).
13. Elektrisches Fahrzeug, insbesondere hybridelektrisches Flugzeug, mit einer elektrischen Maschine (710) nach einem der vorhergehenden Ansprüche. 13. Electric vehicle, in particular hybrid electric aircraft, with an electric machine (710) according to one of the preceding claims.
EP19778798.9A 2018-09-27 2019-09-06 Method for sintering a multicomponent object to be sintered, electric machine, and electric vehicle Pending EP3824534A1 (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020208160A1 (en) * 2020-06-30 2021-12-30 Siemens Aktiengesellschaft Magnetic sheet, method for manufacturing a magnetic sheet, rotor and electrical machine
EP3960334A1 (en) 2020-08-31 2022-03-02 Siemens Aktiengesellschaft Method for manufacturing an electric machine and installation and vehicle
EP4268999A1 (en) 2022-04-27 2023-11-01 Siemens Aktiengesellschaft Magnetic sheet produced by means of additive manufacturing, method for producing same, stack of sheets and electrical machine
WO2023208681A1 (en) 2022-04-27 2023-11-02 Siemens Aktiengesellschaft Additively manufactured magnetic plate, laminated core and electric machine
EP4333262A1 (en) 2022-08-31 2024-03-06 Siemens Aktiengesellschaft Additively manufactured magnetic sheet, lamination stack, and method for manufacturing magnetic sheet
EP4342672A1 (en) 2022-09-23 2024-03-27 Siemens Aktiengesellschaft Additively manufactured magnetic sheet, lamination stack, and electric machine

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2337141C3 (en) * 1973-07-20 1979-11-22 Hitachi, Ltd., Tokio Method of making a composite sintered structure
JP3644080B2 (en) * 1994-08-17 2005-04-27 大同特殊鋼株式会社 Motor parts and coating method thereof
JP3229229B2 (en) * 1996-12-24 2001-11-19 東芝電子エンジニアリング株式会社 Semiconductor chip and manufacturing method thereof
JPH10195507A (en) * 1996-12-27 1998-07-28 Nissan Motor Co Ltd Method for sintering sintered parts and sintering furnace
US6889419B2 (en) * 2002-04-16 2005-05-10 Delphi Technologies, Inc. Method of making a composite electric machine component of a desired magnetic pattern
JP2006009091A (en) * 2004-06-25 2006-01-12 Aisin Aw Co Ltd Method for manufacturing stator core utilizing sintering-diffusion-joining of different kinds of members
EP1939153B1 (en) * 2006-12-27 2014-08-27 DeguDent GmbH Method for manufacturing a multipart construction and such a multipart construction
DE102008042065A1 (en) * 2008-09-12 2010-03-25 Robert Bosch Gmbh Method for producing a component from a composite material and component from a composite material
DE102010034014B4 (en) * 2010-08-11 2015-06-25 Schwäbische Hüttenwerke Automotive GmbH Sinter composite and process for its preparation
DE102010061958A1 (en) * 2010-11-25 2012-05-31 Rolls-Royce Deutschland Ltd & Co Kg Process for producing engine components with a geometrically complex structure
DE102013205442A1 (en) * 2013-03-27 2014-10-02 Robert Bosch Gmbh Pump with electric motor
FR3036300B1 (en) * 2015-05-21 2017-06-23 Snecma METHOD FOR MANUFACTURING A WORKPIECE WITH ADDITIVE FABRICATION ASSEMBLY SURFACE
US10086567B2 (en) * 2015-07-01 2018-10-02 General Electric Company Method for additively manufacturing component and component made therefrom
US20170063183A1 (en) * 2015-08-29 2017-03-02 Abb Technology Ag Electrical machines and fabrication methods therefor
EP3193431A1 (en) * 2016-01-14 2017-07-19 Siemens Aktiengesellschaft Electrical sheet having printed web
JP2019534376A (en) * 2016-08-31 2019-11-28 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ Control variation of magnetocaloric material parameters
US20180184550A1 (en) * 2016-12-28 2018-06-28 Microsoft Technology Licensing, Llc Metal additive structures on printed circuit boards
US10476358B2 (en) * 2017-01-13 2019-11-12 General Electric Company Methods for manufacturing an electric machine
DE102017208094A1 (en) * 2017-05-15 2018-07-26 AUDI HUNGARIA Zrt. Method for producing an iron core for an electrical machine and iron core for an electrical machine
CN107473725B (en) * 2017-08-15 2020-09-29 西南应用磁学研究所 Preparation method of nested matrix

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