EP2480358A1 - Method for producing a composite part - Google Patents

Method for producing a composite part

Info

Publication number
EP2480358A1
EP2480358A1 EP10759809A EP10759809A EP2480358A1 EP 2480358 A1 EP2480358 A1 EP 2480358A1 EP 10759809 A EP10759809 A EP 10759809A EP 10759809 A EP10759809 A EP 10759809A EP 2480358 A1 EP2480358 A1 EP 2480358A1
Authority
EP
European Patent Office
Prior art keywords
solid part
press
working space
composite component
powder metallurgical
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.)
Granted
Application number
EP10759809A
Other languages
German (de)
French (fr)
Other versions
EP2480358B1 (en
Inventor
Rainer Schmitt
Frank Sablotny
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.)
GKN Sinter Metals Holding GmbH
Original Assignee
GKN Sinter Metals Holding GmbH
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 GKN Sinter Metals Holding GmbH filed Critical GKN Sinter Metals Holding GmbH
Publication of EP2480358A1 publication Critical patent/EP2480358A1/en
Application granted granted Critical
Publication of EP2480358B1 publication Critical patent/EP2480358B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/025—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is transferred into the press chamber by relative movement between a ram and the press chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/027—Particular press methods or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/34—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses for coating articles, e.g. tablets
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Definitions

  • the invention relates to a production of a composite component.
  • Japanese Patent Publication No. 2000-144212 teaches a method wherein a cam is molded and sintered from a green compact. A coupling element is installed in the green body prior to sintering and sintered in order to connect it to the sintered part.
  • the object of the present invention is to provide a method by means of which a composite component is produced quickly and inexpensively.
  • the object is achieved by means of a method according to claim 1, a press according to claim 9, a use of a press according to claim 14, a computer program product according to claim 15 and a composite green compact according to claim 21.
  • a method for producing a composite component is proposed, wherein the composite component has at least one powdered metallic part and at least one solid part, wherein within a working space of a press, in particular a tool of a press, the pulverulent material becomes a powder metallurgical part is pressed and in the same operation, in particular in the same stroke of the press, the solid part is at least partially supplied to the working space, so that the composite component is produced within a single operation.
  • a powdery substance is to be understood in particular a powder metal.
  • a solid part may comprise a metal or ceramic material.
  • a solid part of a cast, drawn, sintered, rolled, forged and / or extruded - in particular pultruded material are examples of a solid part of a cast, drawn, sintered, rolled, forged and / or extruded - in particular pultruded material.
  • One operation of the press comprises a working stroke and a return stroke, during which the press collapses during the working stroke and opens again on the return stroke.
  • the operation may also include a downtime, wherein the press or the tool of the press between work and return stroke stops for a defined time in one position.
  • the solid part in a first step of the operation, the solid part is supplied to the powdery substance in the working space and in a second step, the powdery substance to a powder metallurgical part relate As a green compact is pressed.
  • the powdery material is pressed in the working space to a green compact and in a second step, the solid part is supplied to the green compact in the working space.
  • an embodiment is provided in which the solid part is supplied to the working space, while the powdery material is pressed into a green compact.
  • green compact is used for a non-sintered powder-metallurgical part pressed from a pulverulent substance.
  • a powder metallurgy see part is generally a green compact, a sintered body and / or a sintered part to understand.
  • the solid part and the powdery substance may have the same alloy.
  • the powdery substance and the solid part have different alloys.
  • the powdery substance comprises a metal powder and the solid part comprises a non-metallic material, for example ceramic.
  • the powdery substance has a ceramic powder and the solid part a ceramic or non-ceramic material.
  • a powder metallurgical part can also be understood to mean a component which has a non-metallic material, in particular does not comprise any metallic material. It is also provided in one embodiment that the solid part and the powdery substance have different metal or ceramic alloys. Alloys here can be understood to mean metal alloys or ceramic mixtures as well as pure metals or ceramics.
  • the solid part is transferred into the working space such that the solid part protrudes after the operation of a surface of the green body or the powder metallurgical part.
  • the solid part terminates with at least one surface of the powder metallurgical part.
  • the solid part protrudes with an excess of a surface of the powder metallurgical part.
  • the solid part terminates with an undersize below a surface of the powder metallurgical part. Over or under dimensions of about 0.001 millimeters to about 15 millimeters, in a further embodiment are provided to about 20 centimeters.
  • the solid part is surface-treated in a further variant, preferably before introduction into the press.
  • a roughness is defined in at least one Part of the surface increased.
  • a roughness is to be understood as a shape deviation of the third to fifth order in the case of surfaces according to DIN 4760.
  • at least part of the surface of the solid part is oxidized or coated with a conversion layer, for example, blacked or phosphated.
  • a metal oxide layer is produced on the particular metallic solid part by means of a steam treatment.
  • a steam treatment is carried out in particular at temperatures of about 500 ° C to 570 ° C.
  • the steam treatment of the solid part is carried out for at least 10 minutes, preferably at least 30 minutes.
  • an oxide layer thickness of at least 2 ⁇ m is preferably produced.
  • the surface is treated mechanically, roughened for example by grinding or roughing. Also provides a variant that the surface is smoothed, for example, polished.
  • the composite component is sintered, for example, after demolding from the press and / or pre-sintered, in order to supply these optionally further processing steps.
  • the composite component is sintered forged.
  • a further aspect of the invention comprises a press for pressing and joining a composite component, wherein the press has a working space and at least one pressing punch and at least one joining punch.
  • the press additionally has at least one transfer stamp.
  • a powdery material is supplied to the working space, wherein in the working space by means of
  • a solid part can be transferred into the working space by means of the joining punch and / or the transfer punch.
  • the solid part is at least partially supplied to the powdery substance or the green compact, for this purpose provides a further embodiment, that by means of the transfer punch in the working space a joining space is vorhaltbar, in which the solid part preferably transferring with the joining punch. bar is.
  • the joining space is at least partially defined by the powdery substance introduced into the working space.
  • the press has a control device, wherein the control device controls a transfer of the solid part into the working space.
  • a computer program product is implemented on the control device that controls the transfer punch such that it holds a joining space in the working space, which is at least partially filled with a powdery substance and into which a solid part is transferred by means of the joining punch and / or the transfer punch.
  • the pulverulent material which transports the joining space preferably adjoins at least partially exactly to the joining punch and thus to the joining space.
  • the powdery substance at least partially fills the, preferably not filled by the solid part joining space.
  • the solid part is introduced into the powdery substance by means of the joining die, wherein the solid part displaces the pulverulent substance when immersed in the powdery substance.
  • a transfer stamp to keep the Fügeraumes free is not necessary.
  • Another aspect of the invention includes use of the above-mentioned presses for a method mentioned above.
  • a further aspect of the invention comprises a computer program product for a press with a tool, wherein the tool has a working space and at least one press die and at least one joining punch, wherein in the computer program product a method is implemented with which the joining punch is controlled such that this transferred a solid part in a at least partially filled with a powdery material working space.
  • a transfer punch is controlled in such a way that it holds a joining space in the working space, which is at least partially filled with a pulverulent material to be pressed in particular, and into which a solid part is transferred by means of the joining punch.
  • the pressing punch is driven, so that the powdery material is pressed into a green compact.
  • the pressing punch is driven so that the powdered material is pressed into a green compact.
  • the computer program product preferably controls a pressing process and a joining process simultaneously.
  • controlling means both the Control by means of a controller without feedback as well as to understand the rules by means of a feedback control.
  • the joining punch and / or the transfer punch is moved by means of a travel control or a travel control.
  • the press ram is controlled such that it applies a predetermined force to the powdery substance or performs a predetermined work ah the powdery substance.
  • the specifications are determined, for example, by a user or setter of the press, preferably as a function of properties which the green body or the composite green compact is to have.
  • a ram is moved by means of a path control or path control.
  • a further concept of the invention comprises a composite component comprising at least one green compact pressed from a pulverulent substance and at least one solid part.
  • the powdery substance and the solid part have the same alloy.
  • the powder metallurgical part has a shrinkage in a sintering, which is greater than or equal to a shrinkage of the solid part, wherein the solid part does not shrink during sintering in the rule.
  • a shrinkage of the powder-metallurgical part during sintering is greater than that of the solid part, preferably in such a way that the powder-metallurgical part enters into an interference fit with the solid part.
  • the solid part with the powder metallurgical part undergoes a material connection during sintering and preferably sintered at the boundary surfaces.
  • the solid part with the powder metallurgical part enters into a positive connection.
  • the solid part may have a thread. This can be configured as an internal thread or external thread, thus, a finished sintered component of a composite component, for example, without a further processing step on a thread.
  • different geometries for the solid part are provided.
  • the solid part can be configured for example as a sheet metal, pin, bolt, pin, shaft, nut, threaded rod, key and / or bearing.
  • a composite component produced and sintered according to the invention has both the advantages of a solid part, which in particular special may be a favorable purchased part, as well as having the advantages of a sintered part. If the composite component is produced according to the method described above, the costs for the production are substantially lower and the bond between the solid part and the powder metallurgical part much more reliable than in the case of methods known from the prior art, in particular for subsequently introduced solid parts.
  • FIG. 1 shows a schematic sequence of introduction of a solid part into a powdery substance during a compression
  • FIG. 2 shows a schematic sequence of introduction of a solid part into a powdery substance after compression of the pulverulent substance
  • FIG. 3 microsection of a threaded insert used
  • Fig. 4 microsection of an inserted steel pin
  • FIG. 5 shows exemplary embodiments of composite components.
  • step A a solid part 1 is preferably inserted via an automatic feed 4 into the tool 5 of a press.
  • the press is simplified here, for the sake of clarity represented by the tool 5.
  • a pulverulent substance 7 is introduced into a working space 6 of the tool 5.
  • a transfer punch 8.1 keeps a joining space 9 in the working space 6 free, which is at least partially filled with the powdery substance 7.
  • step B a first press die 10.1 and a second press die 10.2 are fed in, so that the powdery material 7 is compressed.
  • the solid part 1 is transferred by means of the transfer punch 8.1 and the joining punch 8.2 into the powdery substance 7.
  • a pressure is exerted by the transfer punch 8.1 and the joining punch 8.2 on the solid part 1 to hold the solid part 1.
  • the solid part 1 is not plastically deformed by the pressure, more preferably, the solid part is elastically deformed by the pressure less than 0.5% of its extension in the direction of force.
  • step C of FIG. 1 the transfer of the solid part 1 and the compression of the powdery substance 7 to a non-sintered powder metallurgical part 2 - referred to below as green body 2 - is completed.
  • the transfer and / or the compression of the powdery material is controlled or regulated via a route control or regulation.
  • step D of FIG. 1 the finished composite component 3 is removed from the mold.
  • a processing or sintering of the composite component can now take place.
  • the sintered composite component is at least partially calibrated.
  • step B that is, in a transfer of the solid part 1 in the powdery substance 7, no or only an insignificant compression of the powdery substance 7 is made.
  • An insignificant compaction is to be understood to mean a compaction which is less than about 80%, preferably less than about 60% of the target density of the green body 2.
  • a solid part 1 of a press 5 is fed and in the working space 6 a pulverulent substance 7 is filled.
  • the pulverulent substance 7 is compacted into a green compact 2, in particular, a compaction of the substance 7 of about 60% to 100% of the targeted density of the green compact 2 in step F is undertaken.
  • the solid part 1 is transferred into the green body 2, wherein in one embodiment, the compression of the green body 2 is interrupted.
  • the supply of the solid part 1 is carried out during a compaction of the green compact 2 or after a desired compaction of the green compact 2.
  • step G a final compaction of the green body 2 is carried out, insofar as it has not yet been performed in step F. Furthermore, a transfer of the solid part 1 is finished in the green body 2. The finished composite component 3 is removed from the mold in the last step H, for example by the transfer punch 8.1 pushing the composite component out of the work space 6. In a further embodiment it is provided that the
  • a die 11 delimiting the working space 6 is displaced such that the composite component is exposed and can be removed from the press.
  • FIG. 3 shows an etched micrograph of a sintered composite component 3 comprising a burnished grub screw 12 about which a powder metallurgical part 2 was pressed.
  • the threaded pin 12 was not blasted before joining. It can be seen that the powdery substance 7 has penetrated into the threads of the threaded pin 12 by the pressing operation of the green body and thus a dimensionally stable connection between the threaded pin and powder metallurgical part has been made.
  • FIG. 4 shows a micrograph of a steel pin 13 pressed into a powder metallurgical part 2.
  • the composite component was sintered at 1250.degree. Although grain-spanning sintering can not be detected, this type of jointing provides excellent mechanical contact between the powder-metallurgical part 2 and the steel pin 13.
  • FIG. 5 shows various schematic embodiments of a composite component 3 which are not to be interpreted as limiting.
  • geometries of the solid part 1 and / or of the powder metallurgical part 2 may deviate from the configurations shown here.
  • the respective upper sectional view of the respective embodiment is a section through a diameter D of the composite component 3.
  • Embodiment I shows the solid part 1 on one side over the powder metallurgical part 2 projecting.
  • embodiment J it can be seen that the solid part 1 projects beyond the powder metallurgical part 2 on both sides.
  • the embodiment K shows a composite component 3 with three solid parts 1, wherein the embodiment shown here is not construed restrictively, but is provided in further variants that two solid parts 1 are provided hen.
  • Embodiment L shows a threaded pin 12 which has been pressed into a powder metallurgical part 2.
  • a mother 14 introduced into the powder metallurgical part 2 emerges.
  • any geometry of the solid part is introduced with an internal thread in the powder metallurgical part.
  • a commercially available nut for example, a hexagon nut is introduced into the powder metallurgical part.
  • Embodiment N shows a punched part 15 pressed into the powder metallurgical part 2.
  • a cast, forged or sintered solid part 1 is introduced into the powder metallurgical part 2.
  • a composite component 3 can be seen, in which a solid part 1 protrudes at a surface 16 orthogonal to a pressing direction of the green body 2.
  • Another variant P provides that two powder-metallurgical parts 2 are pressed in one operation and connected by means of at least one solid part 1.
  • the variant Q shows a composite component 3, whose solid part 1 does not completely penetrate the powder metallurgical part 2. This can be achieved, in particular, by transferring the solid part 1 into the pulverulent substance, without leaving any joining space free.
  • the solid part 1 displaces thus in the addition of the powdery substance.
  • the solid part 1 is at least partially tapered at least in an end region 17, which is inserted into the powdery material, in order to promote a displacement of the powdery substance. It is provided in particular that the exemplary configurations of the composite component 3 of FIG. 5 can be combined with one another and / or with configurations described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Forging (AREA)

Abstract

The invention relates to a method for producing a composite part, the composite part comprising at least one powder metal part compacted from a powdery material and at least one solid part. The powdery material is compacted to a powder metal part inside the working chamber of a press, especially a pressing tool of a press, and the solid part is at least partially fed to the working chamber in the same step, especially in the same working cycle of the press so that the composite part is produced within one working cycle.

Description

Verfahren zur Herstellung eines Verbundbauteils  Method for producing a composite component
Die Erfindung betrifft eine Herstellung eines Verbundbauteils. Aus der japanischen Patentschrift 2000-144212 geht ein Verfahren hervor, wobei eine Nockenscheibe aus einem Grünling geformt und gesintert wird. Ein Kupplungselement wird vor dem Sintern in den Grünling eingebaut und mitgesintert, um dieses mit dem Sinterteil zu verbinden. Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zur Verfügung zu stellen, mittels dem ein Verbundbauteil schnell und kostengünstig hergestellt wird. The invention relates to a production of a composite component. Japanese Patent Publication No. 2000-144212 teaches a method wherein a cam is molded and sintered from a green compact. A coupling element is installed in the green body prior to sintering and sintered in order to connect it to the sintered part. The object of the present invention is to provide a method by means of which a composite component is produced quickly and inexpensively.
Die Aufgabe wird erfindungsgemäß gelöst mittels eines Verfahrens nach Anspruch 1 , einer Presse nach Anspruch 9, einer Verwendung einer Presse nach Anspruch 14, einem Computerprogrammprodukt nach Anspruch 15 und einem Verbundgrünling nach Anspruch 21. The object is achieved by means of a method according to claim 1, a press according to claim 9, a use of a press according to claim 14, a computer program product according to claim 15 and a composite green compact according to claim 21.
Es wird ein Verfahren zur Herstellung eines Verbundbauteils vorgeschlagen, wobei das Verbundbauteil zumindest ein aus einem pulverförmigen Stoff gepresstes pulvermetallur- gisches Teil und zumindest ein Massivteil aufweist, wobei innerhalb eines Arbeitsraumes einer Presse, insbesondere eines Werkzeugs einer Presse, der pulverförmige Stoff zu einem pulvermetallurgischen Teil gepresst wird und im gleichen Arbeitsgang, insbesondere in gleichen Arbeitshub der Presse das Massivteil zumindest teilweise dem Arbeitsraum zugeführt wird, sodass das Verbundbauteil innerhalb eines Arbeitsganges hergestellt wird. Unter einem pulverförmigen Stoff ist insbesondere ein Pulvermetall zu verstehen. Weiterhin kann ein Massivteil ein Metall- oder Keramikwerkstoff aufweisen. Beispielsweise kann ein Massivteil ein gegossenes, gezogenes, gesintertes, gewalztes, geschmiedetes und/oder extrudiertes - insbesondere stranggezogenes - Material aufweisen. Ein Arbeitsgang der Presse umfasst einen Arbeitshub und einen Rückhub, wobei die Presse wäh- rend des Arbeitshubs zusammenfährt und beim Rückhub sich wieder öffnet. Gegebenenfalls kann der Arbeitsgang auch eine Stillstandzeit umfassen, wobei die Presse beziehungsweise das Werkzeug der Presse zwischen Arbeitshub und Rückhub für eine definierte Zeit in einer Position stehenbleibt. In einer ersten Ausgestaltung ist vorgesehen, dass in einem ersten Schritt des Arbeitsganges das Massivteil dem pulverförmigen Stoff im Arbeitraum zugeführt wird und in einem zweiten Schritt der pulverförmige Stoff zu einem pulvermetallurgischen Teil bezie- hungsweise einem Grünling gepresst wird. In einer weiteren Ausgestaltung ist vorgesehen, dass in einem ersten Schritt des Arbeitsganges der pulverförmige Stoff im Arbeitsraum zu einem Grünling gepresst wird und in einem zweiten Schritt das Massivteil dem Grünling im Arbeitsraum zugeführt wird. Bevorzugt ist eine Ausgestaltung vorgesehen, bei der das Massivteil dem Arbeitsraum zugeführt wird, während der pulverförmige Stoff zu einem Grünling gepresst wird. A method for producing a composite component is proposed, wherein the composite component has at least one powdered metallic part and at least one solid part, wherein within a working space of a press, in particular a tool of a press, the pulverulent material becomes a powder metallurgical part is pressed and in the same operation, in particular in the same stroke of the press, the solid part is at least partially supplied to the working space, so that the composite component is produced within a single operation. Under a powdery substance is to be understood in particular a powder metal. Furthermore, a solid part may comprise a metal or ceramic material. For example, a solid part of a cast, drawn, sintered, rolled, forged and / or extruded - in particular pultruded material. One operation of the press comprises a working stroke and a return stroke, during which the press collapses during the working stroke and opens again on the return stroke. Optionally, the operation may also include a downtime, wherein the press or the tool of the press between work and return stroke stops for a defined time in one position. In a first embodiment, it is provided that in a first step of the operation, the solid part is supplied to the powdery substance in the working space and in a second step, the powdery substance to a powder metallurgical part relate As a green compact is pressed. In a further embodiment it is provided that in a first step of the operation, the powdery material is pressed in the working space to a green compact and in a second step, the solid part is supplied to the green compact in the working space. Preferably, an embodiment is provided in which the solid part is supplied to the working space, while the powdery material is pressed into a green compact.
Im Folgenden wird der Begriff Grünling für ein ungesintertes, aus einem pulverförmigen Stoff gepresstes, pulvermetallurgisches Teil verwendet. Unter einem pulvermetallurgi- sehen Teil ist allgemein ein Grünling, ein Sinterling und/oder ein Sinterteil zu verstehen. In the following, the term green compact is used for a non-sintered powder-metallurgical part pressed from a pulverulent substance. Under a powder metallurgy see part is generally a green compact, a sintered body and / or a sintered part to understand.
Beispielsweise kann das Massivteil und der pulverförmige Stoff die gleiche Legierung aufweisen. In weiteren Ausgestaltungen ist vorgesehen, das der pulverförmige Stoff und das Massivteil unterschiedliche Legierungen aufweisen. Insbesondere ist vorgesehen, dass der pulverförmige Stoff ein Metallpulver umfasst und das Massivteil einen nicht metallischen Werkstoff, beispielsweise Keramik umfasst. In einer weiteren Ausgestaltung weist der pulverförmige Stoff ein Keramikpulver auf und das Massivteil einen keramischen oder nichtkeramischen Werkstoff. Somit kann unter einem pulvermetallurgischen Teil auch ein Bauteil zu verstehen sein, das einen nichtmetallischen Werkstoff aufweist, ins- besondere keinen metallischen Werkstoff umfasst. Auch ist in einer Ausgestaltung vorgesehen, dass das Massivteil und der pulverförmigen Stoff verschiedene Metall- oder Keramiklegierungen aufweisen. Unter Legierungen können hier Metalllegierungen oder Keramikmischungen sowie reine Metalle oder Keramiken verstanden werden. Weiterhin ist in einer Ausgestaltung vorgesehen, dass das Massivteil derart in den Arbeitsraum transferiert wird, dass das Massivteil nach dem Arbeitsgang aus einer Oberfläche des Grünlings beziehungsweise des pulvermetallurgischen Teils herausragt. In einer weiteren Ausgestaltung schließt das Massivteil mit zumindest einer Fläche des pulvermetallurgischen Teils ab. Insbesondere ist in einer Ausgestaltung vorgesehen, dass das Massivteil mit einem Übermaß aus einer Fläche des pulvermetallurgischen Teils herausragt. In einer weiteren Ausgestaltung ist vorgesehen, dass das Massivteil mit einem Untermaß unterhalb einer Fläche des pulvermetallurgischen Teils abschließt. Über- oder Untermaße von etwa 0,001 Millimeter bis etwa 15 Millimeter, in einer weiteren Ausgestaltung sind bis etwa 20 Zentimeter vorgesehen. For example, the solid part and the powdery substance may have the same alloy. In further embodiments, it is provided that the powdery substance and the solid part have different alloys. In particular, it is provided that the powdery substance comprises a metal powder and the solid part comprises a non-metallic material, for example ceramic. In a further embodiment, the powdery substance has a ceramic powder and the solid part a ceramic or non-ceramic material. Thus, a powder metallurgical part can also be understood to mean a component which has a non-metallic material, in particular does not comprise any metallic material. It is also provided in one embodiment that the solid part and the powdery substance have different metal or ceramic alloys. Alloys here can be understood to mean metal alloys or ceramic mixtures as well as pure metals or ceramics. Furthermore, it is provided in one embodiment that the solid part is transferred into the working space such that the solid part protrudes after the operation of a surface of the green body or the powder metallurgical part. In a further embodiment, the solid part terminates with at least one surface of the powder metallurgical part. In particular, it is provided in one embodiment that the solid part protrudes with an excess of a surface of the powder metallurgical part. In a further embodiment it is provided that the solid part terminates with an undersize below a surface of the powder metallurgical part. Over or under dimensions of about 0.001 millimeters to about 15 millimeters, in a further embodiment are provided to about 20 centimeters.
Das Massivteil wird in einer weiteren Variante oberflächenbehandelt, vorzugsweise vor Einbringung in die Presse. Insbesondere wird eine Rauheit in zumindest einem definierten Teil der Oberfläche erhöht. Vorzugsweise weist das Massivteil über zumindest einen Teil seiner Oberfläche eine gemittelte Rautiefe von Rz = 1 ηη bis Rz = 63μιη auf. Unter einer Rauheit ist eine Gestaltabweichung dritter bis fünfter Ordnung bei Oberflächen nach DIN 4760 zu verstehen. Besonders bevorzugt wird zumindest ein Teil der Oberfläche des Massivteiles oxidiert oder mit einer Konversionsschicht überzogen, beispielsweise brüniert oder phosphatiert. The solid part is surface-treated in a further variant, preferably before introduction into the press. In particular, a roughness is defined in at least one Part of the surface increased. The solid part preferably has an average roughness depth of at least a part of its surface of Rz = 1 ηη to Rz = 63μιη. A roughness is to be understood as a shape deviation of the third to fifth order in the case of surfaces according to DIN 4760. Particularly preferably, at least part of the surface of the solid part is oxidized or coated with a conversion layer, for example, blacked or phosphated.
In einer weiteren Ausgestaltung ist vorgesehen, dass auf dem insbesondere metallischen Massivteil mittels einer Wasserdampfbehandlung eine Metalloxidschicht erzeugt wird. Dies wird insbesondere bei Temperaturen von etwa 500° C bis 570° C durchgeführt. Vorzugsweise wird die Dampfbehandlung des Massivteiles mindestens 10 Minuten, bevorzugt mindestens 30 Minuten durchgeführt. Weiterhin bevorzugt wird eine Oxidschichtdicke von mindestens 2 μιη erzeugt. Dies hat den Vorteil, dass die Pulverteilchen des pulverförmigen Stoffes sich besser an der Oberfläche des Massivteils verkrallen können. Wei- terhin hat eine Oxidschicht den Vorteil, dass diese bei einem Sinterprozess wieder reduziert wird und insbesondere eine verbesserte Versinterung zwischen Pulverteilchen und Massivteil erfolgen kann. In einer weiteren Ausgestaltung wird die Oberfläche mechanisch behandelt, beispielsweise durch Schleifen oder Schruppen aufgeraut. Auch sieht eine Variante vor, dass die Oberfläche geglättet, beispielsweise poliert wird. In a further embodiment, it is provided that a metal oxide layer is produced on the particular metallic solid part by means of a steam treatment. This is carried out in particular at temperatures of about 500 ° C to 570 ° C. Preferably, the steam treatment of the solid part is carried out for at least 10 minutes, preferably at least 30 minutes. Furthermore, an oxide layer thickness of at least 2 μm is preferably produced. This has the advantage that the powder particles of the powdered material can better dig into the surface of the solid part. Furthermore, an oxide layer has the advantage that it is again reduced in a sintering process, and in particular improved sintering between powder particles and solid part can take place. In a further embodiment, the surface is treated mechanically, roughened for example by grinding or roughing. Also provides a variant that the surface is smoothed, for example, polished.
Das Verbundbauteil wird beispielsweise nach einem Entformen aus der Presse gesintert und/oder vorgesintert, um diesen gegebenenfalls weiteren Bearbeitungsschritten zuzuführen. In einer weiteren Ausgestaltung ist vorgesehen, dass das Verbundbauteil sintergeschmiedet wird. The composite component is sintered, for example, after demolding from the press and / or pre-sintered, in order to supply these optionally further processing steps. In a further embodiment, it is provided that the composite component is sintered forged.
Ein weiterer Gedanke der Erfindung umfasst eine Presse zum Pressen und Fügen eines Verbundbauteils, wobei die Presse einen Arbeitsraum und zumindest einen Pressstempel sowie zumindest einen Fügestempel aufweist. Insbesondere weist die Presse in einer Ausgestaltung zusätzlich zumindest einen Transferstempel auf. Vorzugsweise wird dem Arbeitsraum ein pulverförmiger Stoff zugeführt, wobei in dem Arbeitsraum mittels demA further aspect of the invention comprises a press for pressing and joining a composite component, wherein the press has a working space and at least one pressing punch and at least one joining punch. In particular, in one embodiment, the press additionally has at least one transfer stamp. Preferably, a powdery material is supplied to the working space, wherein in the working space by means of
Pressstempel ein Grünling aus dem pulverförmigen Stoff pressbar ist. Weiterhin sieht eine Ausgestaltung vor, dass mittels dem Fügestempel und/oder dem Transferstempel ein Massivteil in den Arbeitsraum transferierbar ist. Insbesondere wird das Massivteil zumindest teilweise dem pulverförmigen Stoff oder dem Grünling zugeführt, hierzu sieht eine weitere Ausgestaltung vor, dass mittels dem Transferstempel im Arbeitsraum ein Fügeraum vorhaltbar ist, in den das Massivteil vorzugsweise mit dem Fügestempel transferier- bar ist. Insbesondere wird der Fügeraum zumindest teilweise durch den in den Arbeitsraum eingebrachten pulverförmigen Stoff definiert. Press stamp a green compact from the powdered material is pressed. Furthermore, an embodiment provides that a solid part can be transferred into the working space by means of the joining punch and / or the transfer punch. In particular, the solid part is at least partially supplied to the powdery substance or the green compact, for this purpose provides a further embodiment, that by means of the transfer punch in the working space a joining space is vorhaltbar, in which the solid part preferably transferring with the joining punch. bar is. In particular, the joining space is at least partially defined by the powdery substance introduced into the working space.
Die Presse weist in einer Ausgestaltung eine Steuerungseinrichtung auf, wobei die Steue- rungseinrichtung einen Transfer des Massivteils in den Arbeitsraum steuert. Insbesondere ist auf der Steuerungseinrichtung ein Computerprogrammprodukt implementiert, dass den Transferstempel derart angesteuert, dass dieser in dem Arbeitsraum einen Fügeraum vorhält, der mit einem pulverförmigen Stoff zumindest teilweise umfüllt wird und in den ein Massivteil mittels des Fügestempels und/oder des Transferstempels transferiert wird. Der pulverförmige Stoff, der den Fügeraum umfüllt, grenzt vorzugsweise zumindest teilweise genau an den Fügestempel und somit an dem Fügeraum an. Insbesondere ist vorgesehen, dass wenn das Massivteil in den Fügeraum transferiert ist, der pulverförmige Stoff zumindest teilweise den, vorzugsweise nicht von dem Massivteil ausgefüllten Fügeraum füllt. In einer weiteren Ausgestaltung ist vorgesehen, dass das Massivteil mittels des Fü- gestempeis in den pulverförmigen Stoff eingebracht wird, wobei das Massivteil beim Eintauchen in den pulverförmigen Stoff den pulverförmigen Stoff verdrängt. In dieser Ausgestaltung ist ein Transferstempel zur Freihaltung des Fügeraumes nicht notwendig. In one embodiment, the press has a control device, wherein the control device controls a transfer of the solid part into the working space. In particular, a computer program product is implemented on the control device that controls the transfer punch such that it holds a joining space in the working space, which is at least partially filled with a powdery substance and into which a solid part is transferred by means of the joining punch and / or the transfer punch. The pulverulent material which transports the joining space preferably adjoins at least partially exactly to the joining punch and thus to the joining space. In particular, it is provided that when the solid part is transferred into the joining space, the powdery substance at least partially fills the, preferably not filled by the solid part joining space. In a further embodiment, it is provided that the solid part is introduced into the powdery substance by means of the joining die, wherein the solid part displaces the pulverulent substance when immersed in the powdery substance. In this embodiment, a transfer stamp to keep the Fügeraumes free is not necessary.
Ein weiterer Gedanke der Erfindung umfasst eine Verwendung der oben genannten Pres- se für ein oben genanntes Verfahren. Another aspect of the invention includes use of the above-mentioned presses for a method mentioned above.
Ein weiterer Gedanke der Erfindung umfasst ein Computerprogrammprodukt für eine Presse mit einem Werkzeug, wobei das Werkzeug einen Arbeitsraum und zumindest einen Pressstempel sowie zumindest einen Fügestempel aufweist, wobei in dem Compu- terprogrammprodukt ein Verfahren implementiert ist, mit dem der Fügestempel derart angesteuert wird, dass dieser ein Massivteil in einen zumindest teilweise mit einem pulverförmigen Stoff gefüllten Arbeitsraum transferiert. In einer ersten Ausgestaltung ist vorgesehen, dass ein Transferstempel derart angesteuert wird, dass dieser in dem Arbeitsraum einen Fügeraum vorhält, der mit einem insbesondere zu verpressenden pulverförmigen Stoff zumindest teilweise umfüllt wird und in den ein Massivteil mittels des Fügestempels transferiert wird. Insbesondere ist in einer Ausgestaltung vorgesehen, dass nach einem Transfer des Massivteils in den Fügeraum der Pressstempel angesteuert wird, sodass der pulverförmige Stoff zu einem Grünling verpresst wird. In einer weiteren Ausgestaltung ist vorgesehen, dass vor einem Transfer des Massivteils in den Fügeraum, der Pressstempel angesteuert wird, sodass der pulverförmige Stoff zu einem Grünling verpresst wird. Bevorzugt steuert das Computerprogrammprodukt einen Pressvorgang und einen Fügevorgang gleichzeitig. In diesem Zusammenhang ist unter dem Begriff "steuern" sowohl das Ansteuern mittels eines Steuerung ohne Rückkopplung als auch das Regeln mittels einer Regelung mit einer Rückkopplung zu verstehen. Vorzugsweise wird der Fügestempel und/oder der Transferstempel mittels einer Wegesteuerung oder einer Wegregelung verfahren. Weiterhin ist in einer Ausgestaltung vorgesehen, dass der Pressstempel derart angesteuert wird, dass dieser eine vorgegebene Kraft auf den pulverförmigen Stoff aufbringt oder eine vorgegebene Arbeit ah dem pulverförmigen Stoff verrichtet. Die Vorgaben werden beispielsweise durch einen Benutzer oder Einrichter der Presse vorzugsweise in Abhängigkeit von Eigenschaften, die der Grünling respektive der Verbundgrünling aufweisen soll, bestimmt. In einer weiteren Ausgestaltung wird ein Pressstempel mittels einer Wegesteuerung oder Wegeregelung verfahren. A further aspect of the invention comprises a computer program product for a press with a tool, wherein the tool has a working space and at least one press die and at least one joining punch, wherein in the computer program product a method is implemented with which the joining punch is controlled such that this transferred a solid part in a at least partially filled with a powdery material working space. In a first embodiment, it is provided that a transfer punch is controlled in such a way that it holds a joining space in the working space, which is at least partially filled with a pulverulent material to be pressed in particular, and into which a solid part is transferred by means of the joining punch. In particular, it is provided in one embodiment that, after a transfer of the solid part into the joining space, the pressing punch is driven, so that the powdery material is pressed into a green compact. In a further embodiment, it is provided that, before a transfer of the solid part into the joining space, the pressing punch is driven so that the powdered material is pressed into a green compact. The computer program product preferably controls a pressing process and a joining process simultaneously. In this context, the term "controlling" means both the Control by means of a controller without feedback as well as to understand the rules by means of a feedback control. Preferably, the joining punch and / or the transfer punch is moved by means of a travel control or a travel control. Furthermore, it is provided in one embodiment that the press ram is controlled such that it applies a predetermined force to the powdery substance or performs a predetermined work ah the powdery substance. The specifications are determined, for example, by a user or setter of the press, preferably as a function of properties which the green body or the composite green compact is to have. In a further embodiment, a ram is moved by means of a path control or path control.
Ein weiterer Gedanke der Erfindung umfasst ein Verbundbauteil aufweisend zumindest einen aus einem pulverförmigen Stoff gepressten Grünling und zumindest ein Massivteil. In einer Ausgestaltung ist vorgesehen, dass der pulverförmige Stoff und das Massivteil die gleiche Legierung aufweisen. In einer bevorzugten Ausgestaltung ist vorgesehen, dass das pulvermetallurgische Teil eine Schrumpfung bei einem Sintern aufweist, die größer oder gleich einer Schrumpfung des Massivteils ist, wobei das Massivteil beim Sintern in der Regel nicht schrumpft. Weiterhin sieht eine Ausgestaltung vor, dass eine Schrumpfung des pulvermetallurgischen Teils beim Sintern größer ist als die des Massivteils, vor- zugsweise derart, dass das pulvermetallurgische Teil mit dem Massivteil eine Presspassung eingeht. Weiterhin bevorzugt ist, dass das Massivteil mit dem pulvermetallurgischen Teil bei einem Sintern eine Materialverbindung eingeht und vorzugsweise an den Grenzflächen versintert. Auch sieht eine Variante vor, dass das Massivteil mit dem pulvermetallurgischen Teil eine formschlüssige Verbindung eingeht. Insbesondere kann das Massiv- teil ein Gewinde aufweisen. Dieses kann als Innengewinde oder Außengewinde ausgestaltet sein, somit weist ein fertig gesintertes Bauteil aus einem Verbundbauteil beispielsweise ohne einen weiteren Bearbeitungsschritt ein Gewinde auf. In weiteren Ausgestaltungen sind unterschiedliche Geometrien für das Massivteil vorgesehen. So kann das Massivteil beispielsweise als Blech, Stift, Bolzen, Zapfen, Welle, Mutter, Gewindestab, Passfeder und/oder Lager ausgestaltet sein. Es eignet sich vorzugsweise jede Geometrie, die dem pulverförmigen Stoff oder dem pulvermetallurgischen Teil zuführbar ist. Auch ist in einer Ausgestaltung vorgesehen, dass mehrere Massivteile in einem Verbundbauteil angeordnet sind. Eine weitere Variante sieht vor, dass zumindest ein Massivteil in mehr als einem pulvermetallurgischen Teil angeordnet ist und insbesondere diese verbindet. A further concept of the invention comprises a composite component comprising at least one green compact pressed from a pulverulent substance and at least one solid part. In one embodiment, it is provided that the powdery substance and the solid part have the same alloy. In a preferred embodiment it is provided that the powder metallurgical part has a shrinkage in a sintering, which is greater than or equal to a shrinkage of the solid part, wherein the solid part does not shrink during sintering in the rule. Furthermore, an embodiment provides that a shrinkage of the powder-metallurgical part during sintering is greater than that of the solid part, preferably in such a way that the powder-metallurgical part enters into an interference fit with the solid part. It is further preferred that the solid part with the powder metallurgical part undergoes a material connection during sintering and preferably sintered at the boundary surfaces. Also provides a variant that the solid part with the powder metallurgical part enters into a positive connection. In particular, the solid part may have a thread. This can be configured as an internal thread or external thread, thus, a finished sintered component of a composite component, for example, without a further processing step on a thread. In further embodiments, different geometries for the solid part are provided. Thus, the solid part can be configured for example as a sheet metal, pin, bolt, pin, shaft, nut, threaded rod, key and / or bearing. It is preferably any geometry that can be supplied to the powdery substance or the powder metallurgical part. It is also provided in one embodiment that a plurality of solid parts are arranged in a composite component. Another variant provides that at least one solid part is arranged in more than one powder metallurgical part and in particular connects them.
Es zeigt sich aus den oben gegebenen Ausgestaltungen, dass ein erfindungsgemäß hergestelltes und gesintertes Verbundbauteil sowohl die Vorteile eines Massivteils, das ins- besondere ein günstiges Zukaufteil sein kann, als auch die Vorteile eines gesinterten Teils aufweist. Wird das Verbundbauteil nach dem weiter oben beschriebenen Verfahren hergestellt, so sind die Kosten für die Herstellung wesentlich geringer und der Verbund zwischen Massivteil und pulvermetallurgischem Teil wesentlich zuverlässiger als bei aus dem Stand der Technik bekannten Verfahren, insbesondere bei nachträglich eingeführten Massivteilen. It can be seen from the above given embodiments that a composite component produced and sintered according to the invention has both the advantages of a solid part, which in particular special may be a favorable purchased part, as well as having the advantages of a sintered part. If the composite component is produced according to the method described above, the costs for the production are substantially lower and the bond between the solid part and the powder metallurgical part much more reliable than in the case of methods known from the prior art, in particular for subsequently introduced solid parts.
Weitere vorteilhafte Ausgestaltungen gehen aus den nachfolgenden Zeichnungen hervor. Die dort dargestellten Weiterbildungen sind jedoch nicht beschränkend auszulegen, viel- mehr können die dort beschriebenen Merkmale untereinander und mit den oben beschriebenen Merkmalen zu weiteren Ausgestaltungen kombiniert werden. Des Weiteren sei darauf verwiesen, dass die in der Figurenbeschreibung angegebenen Bezugszeichen den Schutzbereich der vorliegenden Erfindung nicht beschränken, sondern lediglich auf die in den Figuren gezeigten Ausführungsbeispiele verweisen. Gleiche Teile oder Teile mit gleicher Funktion weisen im Folgenden die gleichen Bezugszeichen auf. Es zeigen: Further advantageous embodiments will become apparent from the following drawings. However, the further developments described there are not to be construed restrictively; rather, the features described there can be combined with one another and with the features described above to form further embodiments. Furthermore, it should be noted that the reference numerals indicated in the figure description do not limit the scope of the present invention, but merely refer to the embodiments shown in the figures. Identical parts or parts with the same function have the same reference numerals below. Show it:
Fig. 1 ein schematischer Ablauf eines Einbringens eines Massivteils in einen pulverför- migen Stoff während einer Verdichtung; Fig. 2 ein schematischer Ablauf eines Einbringens eines Massivteils in einen pulverför- migen Stoff nach einer Verdichtung des pulverförmigen Stoffes; 1 shows a schematic sequence of introduction of a solid part into a powdery substance during a compression; FIG. 2 shows a schematic sequence of introduction of a solid part into a powdery substance after compression of the pulverulent substance; FIG.
Fig. 3 Schliffbild eines eingesetzten Gewindestiftes; Fig. 4 Schliffbild eines eingesetzten Stahlstiftes; und Fig. 5 Ausführungsbeispiele von Verbundbauteilen. Fig. 3 microsection of a threaded insert used; Fig. 4 microsection of an inserted steel pin; and FIG. 5 shows exemplary embodiments of composite components.
Fig. 1 zeigt eine Abfolge von Verfahrensschritten A bis D, bei der ein Massivteil 1 mit ei- nem pulvermetallurgischen Teil 2 verbunden wird, um ein Verbundbauteil 3 zu bilden. Im Schritt A wird ein Massivteil 1 vorzugsweise über eine automatische Zuführung 4 in das Werkzeug 5 einer Presse eingesetzt. Die Presse ist hier vereinfacht, der Übersichtlichkeit halber durch das Werkzeug 5 dargestellt. Weiterhin wird in einen Arbeitsraum 6 des Werkzeugs 5 ein pulverförmiger Stoff 7 eingefüllt. Ein Transferstempel 8.1 hält einen Fü- geraum 9 im Arbeitsraum 6 frei, der mit dem pulverförmigen Stoff 7 zumindest teilweise umfüllt wird. Im Schritt B wird ein erster Pressstempel 10.1 und ein zweiter Pressstempel 10.2 zugefahren, sodass der pulverförmige Stoff 7 verdichtet wird. Weiterhin wird gleichzeitig das Massivteil 1 mittels dem Transferstempel 8.1 und dem Fügestempel 8.2 in den pulverför- migen Stoff 7 transferiert. Insbesondere wird ein Druck durch den Transferstempel 8.1 und den Fügestempel 8.2 auf das Massivteil 1 ausgeübt, um das Massivteil 1 zu halten. Vorzugsweise wird das Massivteil 1 durch den Druck nicht plastisch verformt, weiterhin bevorzugt wird das Massivteil durch den Druck weniger als 0,5% seiner Ausdehnung in Kraftrichtung elastisch verformt. Im Schritt C der Fig. 1 wird der Transfer des Massivteils 1 und die Verdichtung des pulver- förmigen Stoffes 7 zu einem nicht gesinterten pulvermetallurgischen Teil 2 - im Folgenden Grünling 2 genannt - vollendet. Insbesondere wird der Transfer und/oder die Verdichtung des pulverförmigen Materials über eine Wegesteuerung oder -regelung gesteuert oder geregelt. 1 shows a sequence of method steps A to D in which a solid part 1 is connected to a powder metallurgical part 2 in order to form a composite component 3. In step A, a solid part 1 is preferably inserted via an automatic feed 4 into the tool 5 of a press. The press is simplified here, for the sake of clarity represented by the tool 5. Furthermore, a pulverulent substance 7 is introduced into a working space 6 of the tool 5. A transfer punch 8.1 keeps a joining space 9 in the working space 6 free, which is at least partially filled with the powdery substance 7. In step B, a first press die 10.1 and a second press die 10.2 are fed in, so that the powdery material 7 is compressed. Furthermore, at the same time, the solid part 1 is transferred by means of the transfer punch 8.1 and the joining punch 8.2 into the powdery substance 7. In particular, a pressure is exerted by the transfer punch 8.1 and the joining punch 8.2 on the solid part 1 to hold the solid part 1. Preferably, the solid part 1 is not plastically deformed by the pressure, more preferably, the solid part is elastically deformed by the pressure less than 0.5% of its extension in the direction of force. In step C of FIG. 1, the transfer of the solid part 1 and the compression of the powdery substance 7 to a non-sintered powder metallurgical part 2 - referred to below as green body 2 - is completed. In particular, the transfer and / or the compression of the powdery material is controlled or regulated via a route control or regulation.
In Schritt D der Fig. 1 wird das fertige Verbundbauteil 3 entformt. In weiteren Schritten kann nun eine Bearbeitung oder Sinterung des Verbundbauteils erfolgen. Insbesondere ist vorgesehen, dass das gesinterte Verbundbauteil zumindest teilweise kalibriert wird. Es ist in einer weiteren Ausgestaltung vorgesehen, dass im Schritt B, das heißt bei einem Transfer des Massivteils 1 in den pulverförmigen Stoff 7, keine oder nur eine unwesentliche Verdichtung des pulverförmigen Stoffes 7 vorgenommen wird. Unter einer unwesentlichen Verdichtung ist eine Verdichtung zu verstehen, die unter etwa 80%, vorzugsweise unter etwa 60% der anvisierten Dichte des Grünlings 2 liegt. In step D of FIG. 1, the finished composite component 3 is removed from the mold. In further steps, a processing or sintering of the composite component can now take place. In particular, it is provided that the sintered composite component is at least partially calibrated. It is provided in a further embodiment that in step B, that is, in a transfer of the solid part 1 in the powdery substance 7, no or only an insignificant compression of the powdery substance 7 is made. An insignificant compaction is to be understood to mean a compaction which is less than about 80%, preferably less than about 60% of the target density of the green body 2.
Fig. 2 zeigt eine weitere Variante zur Herstellung eines Verbundgrünlings 3, bei der in einem ersten Schritt E ein Massivteil 1 einer Presse 5 zugeführt wird und in den Arbeitsraum 6 ein pulverförmiger Stoff 7 gefüllt wird. In einem zweiten Schritt F wird der pulverförmige Stoff 7 zu einem Grünling 2 verdichtet, insbesondere wird eine Verdichtung des Stoffes 7 von etwa 60% bis 100% der anvisierten Dichte des Grünlings 2 in Schritt F vorgenommen. Weiterhin wird das Massivteil 1 in den Grünling 2 transferiert, wobei in einer Ausgestaltung die Verdichtung des Grünlings 2 unterbrochen wird. In einer weiteren Ausgestaltung wird die Zufuhr des Massivteils 1 wäh- rend eine Verdichtung des Grünlings 2 oder nach einer gewünschten Verdichtung des Grünlings 2 durchgeführt. Im Schritt G wird eine endgültige Verdichtung des Grünlings 2 durchgeführt, insofern diese noch nicht in Schritt F vorgenommen wurde. Weiterhin wird ein Transfer des Massivteils 1 in den Grünling 2 beendet. Das fertige Verbundbauteil 3 wird im letzten Schritt H entformt, indem beispielsweise der Transferstempel 8.1 das Verbundbauteil aus dem Ar- beitsraum 6 herausdrückt. In einer weiteren Ausgestaltung ist vorgesehen, dass der2 shows a further variant for the production of a composite green compact 3, in which in a first step E a solid part 1 of a press 5 is fed and in the working space 6 a pulverulent substance 7 is filled. In a second step F, the pulverulent substance 7 is compacted into a green compact 2, in particular, a compaction of the substance 7 of about 60% to 100% of the targeted density of the green compact 2 in step F is undertaken. Furthermore, the solid part 1 is transferred into the green body 2, wherein in one embodiment, the compression of the green body 2 is interrupted. In a further embodiment, the supply of the solid part 1 is carried out during a compaction of the green compact 2 or after a desired compaction of the green compact 2. In step G, a final compaction of the green body 2 is carried out, insofar as it has not yet been performed in step F. Furthermore, a transfer of the solid part 1 is finished in the green body 2. The finished composite component 3 is removed from the mold in the last step H, for example by the transfer punch 8.1 pushing the composite component out of the work space 6. In a further embodiment it is provided that the
Pressstempel 10.1 das Verbundbauteil aus dem Arbeitsraum 6 transportiert. In einer weiteren Variante ist vorgesehen, dass eine den Arbeitsraum 6 begrenzende Matrize 11 derart verschoben wird, dass das Verbundbauteil freigelegt wird und der Presse entnommen werden kann. Pressing punches 10.1 the composite component transported from the working space 6. In a further variant, it is provided that a die 11 delimiting the working space 6 is displaced such that the composite component is exposed and can be removed from the press.
Fig. 3 zeigt ein geätztes Schliffbild eines gesinterten Verbundbauteils 3 aufweisend einen brünierten Gewindestift 12, um den ein pulvermetallurgisches Teil 2 gepresst wurde. Der Gewindestift 12 wurde vor dem Fügen nicht blankgestrahlt. Es ist zu erkennen, dass durch den Pressvorgang des Grünlings der pulverförmige Stoff 7 in die Gewindegänge des Gewindestiftes 12 eingedrungen ist und somit eine formfeste Verbindung zwischen Gewindestift und pulvermetallurgischem Teil hergestellt wurde. FIG. 3 shows an etched micrograph of a sintered composite component 3 comprising a burnished grub screw 12 about which a powder metallurgical part 2 was pressed. The threaded pin 12 was not blasted before joining. It can be seen that the powdery substance 7 has penetrated into the threads of the threaded pin 12 by the pressing operation of the green body and thus a dimensionally stable connection between the threaded pin and powder metallurgical part has been made.
Fig. 4 zeigt ein Schliffbild eines in ein pulvermetallurgisches Teil 2 eingepressten Stahlstifts 13. Das Verbundbauteil wurde bei 1250° Celsius gesintert. Eine kornübergreifende Versinterung kann zwar nicht erkannt werden, jedoch besteht durch diese Art der Fügung ein hervorragender mechanischer Kontakt zwischen dem pulvermetallurgischen Teil 2 und dem Stahlstift 13. 4 shows a micrograph of a steel pin 13 pressed into a powder metallurgical part 2. The composite component was sintered at 1250.degree. Although grain-spanning sintering can not be detected, this type of jointing provides excellent mechanical contact between the powder-metallurgical part 2 and the steel pin 13.
Fig. 5 zeigt verschiedene schematische nicht beschränkend auszulegende Ausgestaltun- gen eines Verbundbauteils 3. Insbesondere können Geometrien des Massivteils 1 und/oder des pulvermetallurgischen Teils 2 von den hier dargestellten Ausgestaltungen abweichen. Die jeweils obere Schnittansicht der jeweiligen Ausgestaltung ist ein Schnitt durch einen Durchmesser D des Verbundbauteils 3. Ausgestaltung I zeigt das Massivteil 1 einseitig über das pulvermetallurgische Teil 2 überstehend. In Ausgestaltung J ist zu erkennen, dass das Massivteil 1 beidseitig über das pulvermetallurgische Teil 2 übersteht. Die Ausführung K zeigt ein Verbundbauteil 3 mit drei Massivteilen 1 , wobei die hier dargestellte Ausgestaltung nicht beschränkend auszulegen ist, vielmehr ist in weiteren Varianten vorgesehen, dass zwei Massivteile 1 vorgese- hen sind. Eine weitere Ausgestaltung sieht mehr als drei Massivteile 1 in dem Verbundbauteil 3 vor. Ausgestaltung L zeigt einen Gewindestift 12, der in ein pulvermetallurgisches Teil 2 ein- gepresst wurde. Aus Variante M geht eine in das pulvermetallurgische Teil 2 eingebrachte Mutter 14 hervor. Insbesondere ist vorgesehen, dass eine beliebige Geometrie des Massivteils mit einem Innengewinde in das pulvermetallurgische Teil eingebracht wird. Vor- zugsweise wird eine handelsübliche Mutter, beispielsweise eine Sechskantmutter in das pulvermetallurgische Teil eingebracht. 5 shows various schematic embodiments of a composite component 3 which are not to be interpreted as limiting. In particular, geometries of the solid part 1 and / or of the powder metallurgical part 2 may deviate from the configurations shown here. The respective upper sectional view of the respective embodiment is a section through a diameter D of the composite component 3. Embodiment I shows the solid part 1 on one side over the powder metallurgical part 2 projecting. In embodiment J it can be seen that the solid part 1 projects beyond the powder metallurgical part 2 on both sides. The embodiment K shows a composite component 3 with three solid parts 1, wherein the embodiment shown here is not construed restrictively, but is provided in further variants that two solid parts 1 are provided hen. Another embodiment provides more than three solid parts 1 in the composite component 3. Embodiment L shows a threaded pin 12 which has been pressed into a powder metallurgical part 2. From variant M, a mother 14 introduced into the powder metallurgical part 2 emerges. In particular, it is provided that any geometry of the solid part is introduced with an internal thread in the powder metallurgical part. Preferably, a commercially available nut, for example, a hexagon nut is introduced into the powder metallurgical part.
Ausgestaltung N zeigt ein in das pulvermetallurgische Teil 2 eingepresstes Stanzteil 15. In einer weiteren Variante ist vorgesehen, dass in das pulvermetallurgische Teil 2 ein ge- gossenes, geschmiedetes oder gesintertes Massivteil 1 eingebracht wird. Embodiment N shows a punched part 15 pressed into the powder metallurgical part 2. In a further variant it is provided that a cast, forged or sintered solid part 1 is introduced into the powder metallurgical part 2.
In Version O ist ein Verbundbauteil 3 zu sehen, bei dem ein Massivteil 1 an einer Oberfläche 16 orthogonal zu einer Pressrichtung des Grünlings 2 herausragt. Eine weitere Variante P sieht vor, dass zwei pulvermetallurgische Teile 2 in einem Arbeitsgang gepresst und mittels zumindest einem Massivteil 1 verbunden werden. In version O, a composite component 3 can be seen, in which a solid part 1 protrudes at a surface 16 orthogonal to a pressing direction of the green body 2. Another variant P provides that two powder-metallurgical parts 2 are pressed in one operation and connected by means of at least one solid part 1.
Die Variante Q zeigt ein Verbundbauteil 3, dessen Massivteil 1 das pulvermetallurgische Teil 2 nicht vollständig durchdringt. Dies ist insbesondere dadurch zu erreichen, wenn das Massivteil 1 in den pulverförmigen Stoff transferiert wird, ohne dass ein Fügeraum frei- gehalten wird. Das Massivteil 1 verdrängt somit bei der Fügung den pulverförmigen Stoff. In einer hier nicht gezeigten Ausgestaltung ist das Massivteil 1 zumindest in einem Endbereich 17, der in den pulverförmigen Stoff gesteckt wird, zumindest teilweise verjüngt, um eine Verdrängung des pulverförmigen Stoffes zu begünstigen. Es ist insbesondere vorgesehen, dass die beispielhaften Ausgestaltungen des Verbundbauteils 3 der Fig. 5 miteinander und/oder mit weiter oben beschriebenen Ausgestaltungen kombinierbar sind. The variant Q shows a composite component 3, whose solid part 1 does not completely penetrate the powder metallurgical part 2. This can be achieved, in particular, by transferring the solid part 1 into the pulverulent substance, without leaving any joining space free. The solid part 1 displaces thus in the addition of the powdery substance. In an embodiment not shown here, the solid part 1 is at least partially tapered at least in an end region 17, which is inserted into the powdery material, in order to promote a displacement of the powdery substance. It is provided in particular that the exemplary configurations of the composite component 3 of FIG. 5 can be combined with one another and / or with configurations described above.

Claims

Patentansprüche claims
1. Verfahren zur Herstellung eines Verbundbauteils (3), wobei das Verbundbauteil (3) zumindest ein aus einem pulverförmigen Stoff (7) gepresstes pulvermetallurgisches Teil (2) und zumindest ein Massivteil (1 ) aufweist, wobei innerhalb eines Arbeitsraumes (6) eines Werkzeuges (5) einer Presse der pulverförmige Stoff (7) zu einem pulvermetallurgischen Teil (2) gepresst wird und im gleichen Arbeitsgang der Presse das Massivteil zumindest teilweise dem Arbeitsraum (6) zugeführt wird, sodass das Verbundbauteil (3) innerhalb eines Arbeitsganges hergestellt wird. 1. A method for producing a composite component (3), wherein the composite component (3) at least one of a powdered material (7) pressed powder metallurgical part (2) and at least one solid part (1), wherein within a working space (6) of a tool (5) a press of the powdery material (7) is pressed to a powder metallurgical part (2) and the solid part is at least partially supplied to the working space (6) in the same operation of the press, so that the composite component (3) is produced within a single operation.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass in einem ersten Schritt des Arbeitsganges das Massivteil (1 ) dem pulverförmigen Stoff (7) im Arbeitraum (6) zugeführt wird und in einem zweiten Schritt der pulverförmige Stoff (7) zu einem pulvermetallurgischen Teil (2) gepresst wird. 2. The method according to claim 1, characterized in that in a first step of the operation, the solid part (1) the powdery substance (7) in the working space (6) is supplied and in a second step, the powdery substance (7) to a powder metallurgical part (2) is pressed.
3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass in einem ersten Schritt des Arbeitsganges der pulverförmige Stoff (7) im Arbeitsraum (6) zu einem pulvermetallurgischen Teil (2) gepresst wird und in einem zweiten Schritt das Massivteil (1 ) dem pulvermetallurgischen Teil (2) im Arbeitsraum (6) zugeführt wird. 3. The method according to claim 1, characterized in that in a first step of the operation of the powdery substance (7) in the working space (6) to a powder metallurgical part (2) is pressed and in a second step, the solid part (1) the powder metallurgical part (2) in the working space (6) is supplied.
4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Massivteil (1 ) dem Arbeitsraum (6) zugeführt wird, während der pulverförmige Stoff (7) zu einem pulvermetallurgischen Teil (2) gepresst wird. 4. The method according to claim 1, characterized in that the solid part (1) is supplied to the working space (6), while the powdery substance (7) to a powder metallurgical part (2) is pressed.
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Massivteil (1 ) derart in den Arbeitsraum (6) transferiert wird, dass das Massivteil (1 ) nach dem Arbeitsgang aus einer Oberfläche (16) des pulvermetallurgischen Teils (2) herausragt. 5. The method according to any one of the preceding claims, characterized in that the solid part (1) in such a way in the working space (6) is transferred, that the solid part (1) after the operation of a surface (16) of the powder metallurgical part (2) protrudes ,
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Massivteil vor der Einbringung in die Presse oberflächenbehandelt wird. 6. The method according to any one of the preceding claims, characterized in that the solid part is surface-treated prior to introduction into the press.
7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Verbundbauteil (3) gesintert wird. 7. The method according to any one of the preceding claims, characterized in that the composite component (3) is sintered.
8. Presse (20) zum Pressen und Fügen eines Verbundbauteils (3), wobei die Presse (20) zumindest ein Werkzeug (5), mittels dem ein Arbeitsraum (6) bildbar ist, zumindest einen Pressstempel (10) sowie zumindest einen Fügestempel (8.2) aufweist. 8. Press (20) for pressing and joining a composite component (3), wherein the press (20) at least one tool (5) by means of which a working space (6) can be formed, at least one press ram (10) and at least one joining punch (20). 8.2).
9. Presse (20) nach Anspruch 8, dadurch gekennzeichnet, dass in dem Arbeitsraum (6) mittels dem Pressstempel (10) ein Grünling (2) aus einem pulverförmigen Stoff (7) pressbar ist. 9. Press (20) according to claim 8, characterized in that in the working space (6) by means of the press ram (10), a green body (2) made of a powdery material (7) can be pressed.
10. Presse (20) nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass zu- mindest mittels dem Fügestempel (8.2) und/oder einem Transferstempel (8.1 ) ein10. Press (20) according to any one of claims 8 or 9, characterized in that at least by means of the joining punch (8.2) and / or a transfer punch (8.1) a
Massivteil (1 ) in den Arbeitsraum (6) transferierbar ist. Solid part (1) in the working space (6) is transferable.
11. Presse (20) nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass mittels dem Transferstempel (8.1 ) im Arbeitsraum (6) ein Fügeraum (9) vorhaltbar ist, in den das Massivteil (1 ) transferierbar ist. 11. Press (20) according to any one of claims 8 to 10, characterized in that by means of the transfer punch (8.1) in the working space (6) a joining space (9) is vorhaltbar, in which the solid part (1) is transferable.
12. Presse (20) nach einem der Ansprüche 8 bis 11 , dadurch gekennzeichnet, dass die Presse (20) eine Steuerungseinrichtung aufweist, wobei die Steuerungseinrichtung zumindest einen Transfer des Massivteils (1 ) in den Arbeitsraum (6) steuert. 12. Press (20) according to any one of claims 8 to 11, characterized in that the press (20) has a control device, wherein the control device controls at least one transfer of the solid part (1) in the working space (6).
13. Verwendung einer Presse (20) nach einem der Ansprüche 8 bis 12 für ein Verfahren nach einem der Ansprüche 1 bis 7. 13. Use of a press (20) according to any one of claims 8 to 12 for a method according to one of claims 1 to 7.
14. Computerprogrammprodukt für eine Presse (20) mit einem Werkzeug (5), wobei das Werkzeug (5) einen Arbeitsraum (6) und zumindest einen Pressstempel (10) sowie zumindest einen Fügestempel (8.2) aufweist, wobei in dem Computerprogrammprodukt ein Verfahren implementiert ist, mit dem der Fügestempel (8.2) derart angesteuert wird, dass dieser ein Massivteil (1 ) in ein zumindest teilweise mit pulverförmigen Stoff (7) gefüllten Arbeitsraum (6) transferiert. 14. Computer program product for a press (20) with a tool (5), wherein the tool (5) has a working space (6) and at least one press ram (10) and at least one joining punch (8.2), wherein implements a method in the computer program product is, with which the joining die (8.2) is controlled such that it transfers a solid part (1) in an at least partially filled with powdery material (7) working space (6).
15. Computerprogrammprodukt nach Anspruch 14, dadurch gekennzeichnet, dass ein Transferstempel (8.1 ) derart angesteuert wird, dass dieser in dem Arbeitsraum (6) einen Fügeraum (9) vorhält, der mit einem pulverförmigen Stoff (7) zumindest teilweise umfüllt wird und in den ein Massivteil (1 ) zumindest mittels des Fügestempels (8.2) transferiert wird. 15. Computer program product according to claim 14, characterized in that a transfer punch (8.1) is controlled such that it holds in the working space (6) a joining space (9) which is at least partially filled with a powdery substance (7) and in the a solid part (1) is transferred at least by means of the joining punch (8.2).
16. Computerprogrammprodukt nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass nach einem Transfer des Massivteils (1 ) in den Arbeitsraum (6) oder den Fügeraum (9) der Pressstempel (10) angesteuert wird, sodass der pulverförmige Stoff (7) zu einem pulvermetallurgischen Teil (2) verpresst wird. 16. Computer program product according to claim 14 or 15, characterized in that after a transfer of the solid part (1) in the working space (6) or the joining space (9) of the pressing die (10) is driven, so that the powdery substance (7) to a powder metallurgical part (2) is pressed.
17. Computerprogrammprodukt nach Anspruch 15, dadurch gekennzeichnet, dass vor einem Transfer des Massivteils (1 ) in den Fügeraum (9), der Pressstempel (10) angesteuert wird, sodass der pulverförmige Stoff (7) zu einem pulvermetallurgischen Teil (2) verpresst wird. 17 computer program product according to claim 15, characterized in that before a transfer of the solid part (1) in the joining space (9), the pressing die (10) is driven, so that the powdery substance (7) is pressed to a powder metallurgical part (2) ,
18. Computerprogrammprodukt, nach einem der Ansprüche 14 bis 17, dadurch gekennzeichnet, dass der Fügestempel (8.2) und/oder der Transferstempel (8.1 ) mittels einer Wegesteuerung verfahren wird. 18. Computer program product according to one of claims 14 to 17, characterized in that the joining punch (8.2) and / or the transfer punch (8.1) is moved by means of a route control.
19. Computerprogrammprodukt nach einem der Ansprüche 14bis 18, dadurch gekennzeichnet, dass die Pressstempel (10) derart angesteuert werden, dass diese eine vorgegebene Kraft auf den pulverförmigen Stoff (7) aufbringen oder eine vorgegebene Arbeit an dem pulverförmigen Stoff (7) verrichten. 19. Computer program product according to one of claims 14 to 18, characterized in that the press punches (10) are controlled such that they apply a predetermined force to the powdery substance (7) or perform a predetermined work on the powdery substance (7).
20. Verbundbauteil (3) aufweisend zumindest einen aus einem pulverförmigen Stoff (7) gepresstes pulvermetallurgisches Teil (2) und zumindest ein Massivteil (1 ). 20. Composite component (3) comprising at least one of a pulverulent material (7) pressed powder metallurgical part (2) and at least one solid part (1).
21. Verbundbauteil (3) nach Anspruch 20, dadurch gekennzeichnet, dass der pulverförmige Stoff (7) und das Massivteil (1 ) die gleiche Legierung aufweisen. 21. Composite component (3) according to claim 20, characterized in that the powdery substance (7) and the solid part (1) have the same alloy.
22. Verbundbauteil (3) nach einem der Ansprüche 20 bis 21 , dadurch gekennzeichnet, dass das Massivteil (1 ) und der pulverförmige Stoff (7) die unterschiedliche Legierung aufweisen. 22. Composite component (3) according to one of claims 20 to 21, characterized in that the solid part (1) and the powdery substance (7) have the different alloy.
23. Verbundbauteil (3) nach einem der Ansprüche 21 oder 22, dadurch gekennzeichnet, dass das pulvermetallurgische Teil (2) eine Schrumpfung bei einem Sintern aufweist, die größer oder gleich einer Schrumpfung des Massivteils (1 ) ist. 23 composite component (3) according to any one of claims 21 or 22, characterized in that the powder metallurgical part (2) has a shrinkage in a sintering, which is greater than or equal to a shrinkage of the solid part (1).
24. Verbundbauteil (3) nach einem der Ansprüche 22 bis 23, dadurch gekennzeichnet, dass das Massivteil (1 ) ein Gewinde aufweist. 24. Composite component (3) according to any one of claims 22 to 23, characterized in that the solid part (1) has a thread.
25. Verbundbauteil (3) nach einem der Ansprüche 21 bis 24, dadurch gekennzeichnet, dass das Massivteil (1 ) mit dem pulvermetallurgischen Teil (2) in einem Sinterprozess materialverbindbar ist. 25. Composite component (3) according to one of claims 21 to 24, characterized in that the solid part (1) with the powder metallurgical part (2) is material bondable in a sintering process.
26. Verbundbauteil (3) nach einem der Ansprüche 21 bis 25, dadurch gekennzeichnet, dass das Massivteil (1 ) und das pulvermetallurgische Teil (2) eine formschlüssige Verbindung eingehen. 26. Composite component (3) according to one of claims 21 to 25, characterized in that the solid part (1) and the powder metallurgical part (2) form a positive connection.
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WO2011035858A1 (en) 2011-03-31
US20120214014A1 (en) 2012-08-23
WO2011035858A8 (en) 2012-05-03
WO2011035858A9 (en) 2011-06-30
JP2013505359A (en) 2013-02-14
IN2012DN03052A (en) 2015-07-31
CN102770222A (en) 2012-11-07
ES2887337T3 (en) 2021-12-22
EP2480358B1 (en) 2021-06-30
DE102009042603A1 (en) 2011-03-24
CN102770222B (en) 2016-06-29

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