EP2370705A1 - Method for the production of a bearing arrangement, and bearing arrangement - Google Patents

Method for the production of a bearing arrangement, and bearing arrangement

Info

Publication number
EP2370705A1
EP2370705A1 EP09763846A EP09763846A EP2370705A1 EP 2370705 A1 EP2370705 A1 EP 2370705A1 EP 09763846 A EP09763846 A EP 09763846A EP 09763846 A EP09763846 A EP 09763846A EP 2370705 A1 EP2370705 A1 EP 2370705A1
Authority
EP
European Patent Office
Prior art keywords
bearing
bearing element
conversion part
nanocrystalline layer
layer
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.)
Withdrawn
Application number
EP09763846A
Other languages
German (de)
French (fr)
Inventor
Berthold Beyfuss
Alfred Radina
Jonas Schierling
Stefanie Seufert
Helmut Hauck
Alexander Dilje
Hnas-Jürgen FRIEDRICH
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.)
SKF AB
Original Assignee
SKF AB
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 SKF AB filed Critical SKF AB
Publication of EP2370705A1 publication Critical patent/EP2370705A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0006—Exothermic brazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
    • B23K1/18—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/16—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
    • B23K20/165—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas involving an exothermic reaction of the interposed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/32—Material joints by soldering
    • F16C2226/34—Material joints by soldering by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/36—Material joints by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the invention relates to a method for producing a bearing arrangement, comprising at least one bearing element and at least one conversion part, wherein the bearing element and the conversion part are in normal use at a contact surface to each other. Furthermore, the invention relates to a bearing arrangement.
  • a bearing element for example, the bearing outer ring of a roller bearing
  • a conversion part eg a bearing carrier
  • a solid and stable connection is often sought.
  • cohesive connections namely soldering and welding connections are suitable.
  • bearing element is for example a bearing ring.
  • This consists mostly of through hardening bearing steel, in particular of the steel material lOCr®, which is virtually non-weldable due to its high content of carbon.
  • soldering has the advantage that non-weldable materials can be joined together.
  • a disadvantage of soldering that the joining partners must be heated in the region of the joining surfaces to the required brazing temperature, which can lead to damage in the bearing assembly due to the high heat input.
  • the heating of the partners to be joined is also energy-consuming and leads to a large temperature dispersion in the components. Due to this temperature dispersion, it can lead to deformation or even destruction of the connection partners.
  • an external source of energy eg a soldering torch
  • a soldering torch is needed, which is a tedious process and hardly suitable for mass production.
  • the invention is therefore based on the invention to propose a method of the type mentioned above and a corresponding bearing arrangement with which or with which the mentioned disadvantages can be avoided. So it should be created a cost-effective way, with a bearing element and a tag can be firmly bonded, even if at least the material of one of the parts to be joined together made of non-weldable material. On the other hand, no or at least only a subordinate amount of heat is to be introduced into the components by the cohesive connection process, so that there is no damage in the bearing element or in the conversion part.
  • the nanocrystalline layer serves as "fuel for the production of the integral connection, it heats the partners involved, whereby in particular a joining in the manner of a soldered or welded connection can be produced.
  • the triggering of the exothermic reaction according to step b) in the reactive nanocrystalline layer can also be achieved by at least partially melting the surface of the bearing element and / or the conversion part located in the region of the contact surface to form a material connection between the nanocrystalline layer and the bearing element and / or the Lead the conversion part.
  • the placing of the reactive nanocrystalline layer between the bearing element and the conversion part according to step a) can take place during or after the bearing element and the conversion part are arranged in the intended relative position as desired or have been. Alternatively, however, it is also possible that the placing of the reactive nanocrystalline layer between the bearing element and the conversion part takes place according to step a) before the bearing element and the conversion part are arranged in the intended relative position.
  • the reactive nanocrystalline layer is applied to the bearing element or to the conversion part in the region of the contact surface.
  • a layer of a solder can be placed in the area of the contact surface between the bearing element and the reactive nanocrystalline layer or between the conversion part and the nanocrystalline layer.
  • the bearing element or the conversion part it is also possible for the bearing element or the conversion part to be provided with a coating in the region of the contact surface before the said step is carried out, the coating being a solder or having a solder.
  • the triggering of the exothermic reaction in the reactive nanocrystalline layer according to step b) above can, according to a preferred embodiment of the proposed method, be carried out by passing an electric current through the reactive nanocrystalline layer.
  • the bearing element and the conversion part can be pressed against one another relative to one another. This helps to form a strong bond between the components to be joined.
  • the proposed bearing arrangement comprises at least one bearing element and at least one conversion part, the bearing element and the conversion part being in contact with one another when used as intended.
  • Erf ⁇ ndungs- is provided according to that a reactive nanocrystalline layer in the region of the contact surface is arranged, wherein the reactive nanocrystalline layer forms an integral connection between the bearing element and the conversion part after execution of an exothermic reaction.
  • the reactive nanocrystalline layer can be introduced as a separate structure between the bearing element and the conversion part. But it is also possible that the reactive nanocrystalline layer is applied as a coating on the bearing element and / or on the conversion part. Furthermore, a layer of a solder can be arranged between the reactive nanocrystalline layer and the bearing element or between the reactive nanocrystalline layer and the conversion part. However, it is also possible to form the reactive nanocrystalline layer together with the solder as a separate element which can be introduced in accordance with the above step a).
  • the bearing element is part of a rolling bearing according to a preferred embodiment of the invention and has at least one raceway for rolling elements. But it is also possible that the bearing element is part of a sliding bearing and has at least one sliding surface.
  • the conversion part can be designed as a bearing carrier.
  • the bearing carrier may have at least one circular recess for receiving the bearing ring of a roller bearing, wherein the reactive nanocrystalline layer is arranged along the circumference of the circular recess.
  • the conversion part consists especially in the latter case of sheet metal.
  • the bearing element consists mostly of steel, in particular of bearing steel, particularly preferably 100Cr6, in order to be able to easily handle the disadvantage that said material is not weldable in accordance with the invention.
  • the bearing element may also consist of a non-metallic material, in particular of a ceramic material, as is typical for some plain bearings.
  • the concept according to the invention therefore aims to provide for the joining of the bearing element and the conversion part a process which is due to the use of exothermically reacting layers or particles.
  • These layers are based, for example, on the use of nickel (Ni) and aluminum (Al).
  • Ni nickel
  • Al aluminum
  • the reactive nanocrystalline layers provided are preferably films which have a multiplicity of thin layers which can act as a local heat source.
  • Such layers are commercially available, for example under the name nanofoil ® from Reactive Nano Technogies Inc., USA.
  • the said layer represents a thermally unstable layer, which can be activated, for example, by the introduction of electrical energy.
  • the layers provided according to the invention can be constructed, for example, by inserting said reactive nanocrystalline films.
  • it is also possible to apply the layer of reactive nanocrystalline material directly to at least one side of the contact surfaces to be joined (of bearing element and / or conversion part) using known coating methods (for example by "Physical Powder Deposition" - abbreviated to DVP) is depending on the achievable temperature and the material to be joined during the thermal reaction, if appropriate, a filler or in the form of a solder advantageous or necessary.
  • the proposal according to the invention can be carried out so that the cohesive connection based on the entire component can be carried out at near room temperature. This results in no thermal distortion of the components to be joined and no destruction or damage to the same. Furthermore, no additional energy source for heat input is required.
  • the proposed method can basically be used for all types of bearing elements (for example, also for slide bearings with ceramic material), in which additional components are to be fastened at high cost, for. As flanges, or in which complete bearings (with heat-sensitive seals) must be directly cohesively connected with conversion parts.
  • the reactive nanocrystalline layers are preferably used in the form of films. However, it is also possible to apply these layers in the form of pasty material.
  • FIG. 1 shows schematically the section through a bearing arrangement in which a Wälzla- ger is used in the form of an axial ball bearing
  • FIG. 2 schematically shows the section through a bearing arrangement in which a rolling bearing in the form of a cylindrical roller bearing supports a shaft relative to a conversion part
  • FIG. 3 shows schematically the section through a bearing arrangement in which a plain bearing supports a shaft relative to a conversion part
  • Fig. 4 is an enlarged view of the cohesive composite between a bearing element and a conversion part.
  • a bearing assembly 1 which comprises a roller bearing 7 in the form of an axial ball bearing, which is arranged on a conversion part 3 in the form of a bearing carrier. More precisely, one of the bearing rings, namely the bearing element 2 materially connected to the Umbauteil 3. The bearing ring 2 has a raceway 8 for the balls of the bearing.
  • the bearing element 2 and the conversion part 3 make contact at a contact surface 4.
  • a layer 5 of reactive nanocrystaline material is introduced into the resulting contact gap. If this layer 5 is activated, for example by applying an electric current which flows through the layer 5, an exothermic process occurs, which leads to the melting of the opposing surfaces of the bearing element 2 and the conversion part 3 and, in cooperation with the Melting of the layer 5 itself - to a solid cohesive bond between the bearing element 2 and the Umbauteil 3.
  • a rolling bearing 7 in the form of a cylindrical roller bearing supports a shaft 11 relative to the Umbauteil 3.
  • the proposal of the invention may also be used in exactly the same way - as shown in FIG. 3 - when it comes to fixing a bearing element in the form of a sliding bearing 9 on a conversion part 3.
  • the bearing element 2 consists here of a ceramic bush consisting of sliding bush, which is set on the conversion part 3.
  • the sliding bush 2 has a sliding surface 10, via which a shaft 1 1 is mounted.
  • a layer 5 of reactive nanocrystalline material is used for cohesive fixing of the bearing element 2 on the conversion part 3.
  • FIG. 4 shows, it is also possible to arrange a layer 6 of a solder between the reactive nanocrystalline layer 5 and the bearing element 2 and / or the conversion element 3 before the layer 5 is activated and the cohesive connection is thus produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The invention relates to a method for producing a bearing arrangement (1) comprising at least one bearing element (2) and at least one surrounding part (3) which rest against each other on a contact surface (4) if properly used. Said method is characterized by the following steps: a) the bearing element (2) and the surrounding part (3) are arranged in the appropriate desired relative position to each other, and a reactive nanocrystalline layer (5) is disposed between the bearing element (2) and the surrounding part (3) in the area of the contact surface (4); b) an exothermic reaction is initiated in the reactive nanocrystalline layer (5) such that an integral bond is created between the bearing element (2) and the surrounding part (3) by at least partially heating the surface of the bearing element (2) and/or the surrounding part (3) in the area of the contact surface (4). The invention also relates to a bearing arrangement.

Description

B e s c h r e i b u n g Description
Verfahren zur Herstellung einer Lageranordnung und LageranordnungMethod for producing a bearing arrangement and bearing arrangement
Die Erfindung betrifft ein Verfahren zur Herstellung einer Lageranordnung, umfassend mindestens ein Lagerelement und mindestens ein Umbauteil, wobei das Lagerelement und das Umbauteil bei bestimmungsgemäßem Gebrauch an einer Kontakt- flache aneinander liegen. Des Weiteren betrifft die Erfindung eine Lageranordnung.The invention relates to a method for producing a bearing arrangement, comprising at least one bearing element and at least one conversion part, wherein the bearing element and the conversion part are in normal use at a contact surface to each other. Furthermore, the invention relates to a bearing arrangement.
In mannigfaltigen maschinenbautechnischen Anwendungen gilt es, ein Lagerelement (beispielsweise den Lageraußenring eines Wälzlagers) mit einem Umbauteil (z. B. einem Lagerträger) zu verbinden. Hierbei wird häufig eine feste und stabile Verbindung angestrebt. Dafür eigenen sich insbesondere stoffschlüssige Verbindungen, namentlich Löt- und Schweißverbindungen.In various mechanical engineering applications, it is necessary to connect a bearing element (for example, the bearing outer ring of a roller bearing) with a conversion part (eg a bearing carrier). Here, a solid and stable connection is often sought. For this purpose, in particular cohesive connections, namely soldering and welding connections are suitable.
Sofern es sich um das Schweißen als stoffschlüssiges Verbindungsverfahren handelt, sind dann Einschränkungen zu machen, wenn das Lagerelement beispielsweise ein Lagerring ist. Dieser besteht zumeist aus durchhärtendem Wälzlagerstahl, insbesondere aus dem Stahlwerkstoff lOOCrό, der infolge seines hohen Gehalts an Koh- lenstoff praktisch nicht schweißbar ist.If it is welding as cohesive bonding method, then restrictions are to be made when the bearing element is for example a bearing ring. This consists mostly of through hardening bearing steel, in particular of the steel material lOCr®, which is virtually non-weldable due to its high content of carbon.
Soll ein solcher Lagerring stoffschlüssig mit einem Umbauteil verbunden werden, kommt daher statt dem Schweißen das Löten in Frage. Das Löten hat den Vorteil, dass auch nicht schweißbare Materialien miteinander verbunden wer- den können. Nachteilig ist beim Löten indes, dass die Fügepartner im Bereich der Fügeflächen auf die notwendige Löttemperatur erhitzt werden müssen, was aufgrund der hohen Wärmeinbringung zu Schädigungen in der Lageranordnung führen kann. Das Au f- heizen der zu fügenden Partner ist zudem energetisch aufwändig und führt zu einer großen Temperaturstreuung in den Bauteilen. Aufgrund dieser Temperaturstreuung kann es zu Verformungen oder gar Zerstörungen der Verbindungspartner kommen. Des Weiteren ist eine externe Energiequelle (z. B. ein Lötbrenner) nötig, was einen langwierigen Prozess darstellt und sich kaum für die Großserienfertigung eignet.If such a bearing ring are to be materially connected to a conversion part, soldering therefore comes into question instead of welding. Soldering has the advantage that non-weldable materials can be joined together. A disadvantage of soldering, however, that the joining partners must be heated in the region of the joining surfaces to the required brazing temperature, which can lead to damage in the bearing assembly due to the high heat input. The heating of the partners to be joined is also energy-consuming and leads to a large temperature dispersion in the components. Due to this temperature dispersion, it can lead to deformation or even destruction of the connection partners. Furthermore, an external source of energy (eg a soldering torch) is needed, which is a tedious process and hardly suitable for mass production.
Der Erfindung liegt daher die A u f g a b e zu Grunde, ein Verfahren der eingangs genannten Art sowie eine entsprechende Lageranordnung vorzuschlagen, mit dem bzw. mit der die genannten Nachteile vermieden werden können. Es soll also eine kostengünstige Möglichkeit geschaffen werden, mit der ein Lagerelement und ein Umbauteil stoffschlüssig verbunden werden können, auch wenn zumindest das Material eines der miteinander zu verbindenden Teile aus nicht schweißbarem Material bestehen. Andererseits soll durch den stoffschlüssigen Verbindungsvorgang keine oder jedenfalls nur eine untergeordnete Menge an Wärme in die Bauteile eingetragen werden, so dass es zu keiner Schädigung im Lagerelement bzw. im Umbauteil kommt.The invention is therefore based on the invention to propose a method of the type mentioned above and a corresponding bearing arrangement with which or with which the mentioned disadvantages can be avoided. So it should be created a cost-effective way, with a bearing element and a tag can be firmly bonded, even if at least the material of one of the parts to be joined together made of non-weldable material. On the other hand, no or at least only a subordinate amount of heat is to be introduced into the components by the cohesive connection process, so that there is no damage in the bearing element or in the conversion part.
Die L ö s u n g dieser Aufgabe durch die Erfindung ist verfahrensgemäß dadurch gekennzeichnet, dass die Schritte vorgesehen sind:The solution to this problem by the invention is according to the method characterized in that the steps are provided:
a) Anordnen des Lagerelements und des Umbauteils in der bestimmungsgemäß gewünschten relativen Lage zueinander und Platzieren einer reaktiven nanokristallinen Schicht zwischen dem Lagerelement und dem Umbauteil im Bereich der Kontaktfläche; b) Auslösen einer exothermen Reaktion in der reaktiven nanokristallinen Schicht, so dass es durch zumindest teilweises Erhitzen der sich im Bereich der Kontaktfläche befindlichen Oberfläche des Lagerelements und/oder des Umbauteils zu einer stoffschlüssigen Verbindung zwischen dem Lagerelement und dem Umbauteil kommt.a) arranging the bearing element and the conversion part in the intended relative position relative to one another and placing a reactive nanocrystalline layer between the bearing element and the conversion part in the region of the contact surface; b) triggering an exothermic reaction in the reactive nanocrystalline layer, so that it comes to at least partial heating of located in the region of the contact surface surface of the bearing element and / or the Umbauteils to a material connection between the bearing element and the Umbauteil.
Die nanokristalline Schicht dient demzufolge als „Brennstoff für die Herstellung der stoffschlüssigen Verbindung, sie erhitzt die beteiligten Partner, wodurch insbesondere eine Fügung nach Art einer Löt- oder Schweißverbindung hergestellt wer- den kann.Consequently, the nanocrystalline layer serves as "fuel for the production of the integral connection, it heats the partners involved, whereby in particular a joining in the manner of a soldered or welded connection can be produced.
Das Auslösen der exothermen Reaktion gemäß Schritt b) in der reaktiven nanokristallinen Schicht kann auch durch zumindest teilweises Aufschmelzen der sich im Bereich der Kontaktfläche befindlichen Oberfläche des Lagerelements und/oder des Umbauteils zu einer stoffschlüssigen Verbindung zwischen der nanokristallinen Schicht und dem Lagerelement und/oder dem Umbauteil führen.The triggering of the exothermic reaction according to step b) in the reactive nanocrystalline layer can also be achieved by at least partially melting the surface of the bearing element and / or the conversion part located in the region of the contact surface to form a material connection between the nanocrystalline layer and the bearing element and / or the Lead the conversion part.
Das Platzieren der reaktiven nanokristallinen Schicht zwischen dem Lagerelement und dem Umbauteil gemäß Schritt a) kann dabei erfolgen, während oder nachdem das Lagerelement und das Umbauteil in der bestimmungsgemäß gewünschten Relativlage angeordnet werden oder worden sind. Es ist aber alternativ auch möglich, dass das Platzieren der reaktiven nanokristallinen Schicht zwischen dem Lagerelement und dem Umbauteil gemäß Schritt a) erfolgt, bevor das Lagerelement und das Umbauteil in der bestimmungsgemäß gewünschten Relativlage angeordnet werden.The placing of the reactive nanocrystalline layer between the bearing element and the conversion part according to step a) can take place during or after the bearing element and the conversion part are arranged in the intended relative position as desired or have been. Alternatively, however, it is also possible that the placing of the reactive nanocrystalline layer between the bearing element and the conversion part takes place according to step a) before the bearing element and the conversion part are arranged in the intended relative position.
In letzerem Falle besteht eine spezielle Möglichkeit darin, dass die reaktive nanokristalline Schicht auf das Lagerelement bzw. auf das Umbauteil im Bereich der Kontaktfläche aufgebracht wird. Vor der Durchführung des Schrittes a) kann im Bereich der Kontaktfläche zwischen dem Lagerelement und der reaktiven nanokristallinen Schicht bzw. zwischen dem Umbauteil und der nanokristallinen Schicht zumindest abschnittsweise eine Schicht eines Lots platziert werden. Es ist alternativ aber auch möglich, dass vor der Durch- führung des genannten Schrittes das Lagerelement bzw. das Umbauteil im Bereich der Kontaktfläche mit einer Beschichtung versehen wird, wobei die Beschichtung ein Lot ist oder ein Lot aufweist.In the latter case, a special possibility is that the reactive nanocrystalline layer is applied to the bearing element or to the conversion part in the region of the contact surface. Before carrying out step a), at least in sections, a layer of a solder can be placed in the area of the contact surface between the bearing element and the reactive nanocrystalline layer or between the conversion part and the nanocrystalline layer. Alternatively, however, it is also possible for the bearing element or the conversion part to be provided with a coating in the region of the contact surface before the said step is carried out, the coating being a solder or having a solder.
Das Auslösen der exothermen Reaktion in der reaktiven nanokristallinen Schicht gemäß obigem Schritt b) kann gemäß einer bevorzugten Ausgestaltung des vorgeschlagenen Verfahrens dadurch erfolgen, dass ein elektrischer Strom durch die reaktive nanokristalline Schicht geleitet wird.The triggering of the exothermic reaction in the reactive nanocrystalline layer according to step b) above can, according to a preferred embodiment of the proposed method, be carried out by passing an electric current through the reactive nanocrystalline layer.
Während der exothermen Reaktion in der reaktiven nanokristallinen Schicht gemäß obigem Schritt b) kann das Lagerelement und das Umbauteil relativ zueinander aneinander gedrückt werden. Dies unterstützt die Bildung einer festen Verbindung zwischen den zu fügenden Bauteilen.During the exothermic reaction in the reactive nanocrystalline layer according to the above step b), the bearing element and the conversion part can be pressed against one another relative to one another. This helps to form a strong bond between the components to be joined.
Die vorgeschlagene Lageranordnung umfasst mindestens ein Lagerelement und mindestens ein Umbauteil, wobei das Lagerelement und das Umbauteil bei bestimmungsgemäßem Gebrauch an einer Kontaktfläche aneinander liegen. Erfϊndungs- gemäß vorgesehen ist, dass eine reaktive nanokristalline Schicht im Bereich der Kontaktfläche angeordnet ist, wobei die reaktive nanokristalline Schicht nach Ausführung einer exothermen Reaktion eine stoffschlüssige Verbindung zwischen dem Lagerelement und dem Umbauteil bildet.The proposed bearing arrangement comprises at least one bearing element and at least one conversion part, the bearing element and the conversion part being in contact with one another when used as intended. Erfϊndungs- is provided according to that a reactive nanocrystalline layer in the region of the contact surface is arranged, wherein the reactive nanocrystalline layer forms an integral connection between the bearing element and the conversion part after execution of an exothermic reaction.
Die reaktive nanokristalline Schicht kann dabei als separate Struktur zwischen das Lagerelement und das Umbauteil eingebracht sein. Es ist aber auch möglich, dass die reaktive nanokristalline Schicht als Beschichtung auf das Lagerelement und/oder auf das Umbauteil aufgebracht ist. Zwischen der reaktiven nanokristallinen Schicht und dem Lagerelement bzw. zwischen der reaktiven nanokristallinen Schicht und dem Umbauteil kann ferner eine Schicht aus einem Lot angeordnet sein. Es ist aber auch möglich, die reaktive na- nokristalline Schicht zusammen mit dem Lot als separates Element auszubilden, welches gemäß obigem Schritt a) eingebracht werden kann.The reactive nanocrystalline layer can be introduced as a separate structure between the bearing element and the conversion part. But it is also possible that the reactive nanocrystalline layer is applied as a coating on the bearing element and / or on the conversion part. Furthermore, a layer of a solder can be arranged between the reactive nanocrystalline layer and the bearing element or between the reactive nanocrystalline layer and the conversion part. However, it is also possible to form the reactive nanocrystalline layer together with the solder as a separate element which can be introduced in accordance with the above step a).
Das Lagerelement ist gemäß einer bevorzugten Ausgestaltung der Erfindung Bestandteil eines Wälzlagers und weist mindestens eine Laufbahn für Wälzkörper auf. Möglich ist es aber auch, dass das Lagerelement Bestandteil eines Gleitlagers ist und mindestens eine Gleitfläche aufweist.The bearing element is part of a rolling bearing according to a preferred embodiment of the invention and has at least one raceway for rolling elements. But it is also possible that the bearing element is part of a sliding bearing and has at least one sliding surface.
Das Umbauteil kann als Lagerträger ausgeführt sein. Der Lagerträger kann mindestens eine kreisförmige Ausnehmung für die Aufnahme des Lagerrings eines Wälz- lagers aufweisen, wobei die reaktive nanokristalline Schicht entlang des Umfangs der kreisförmigen Ausnehmung angeordnet ist. Das Umbauteil besteht insbesondere in letztgenanntem Falle aus Blech.The conversion part can be designed as a bearing carrier. The bearing carrier may have at least one circular recess for receiving the bearing ring of a roller bearing, wherein the reactive nanocrystalline layer is arranged along the circumference of the circular recess. The conversion part consists especially in the latter case of sheet metal.
Das Lagerelement besteht zumeist aus Stahl, insbesondere aus Wälzlagerstahl, be- sonders bevorzugt aus 100Cr6, um den Nachteil, dass das genannte Material nicht schweißbar ist, erfindungsgemäß in einfacher Weise umgehen zu können. Das Lagerelement kann aber auch aus einem nichtmetallischen Material, insbesondere aus einem Keramikmaterial, bestehen, wie es für manche Gleitlager typisch ist.The bearing element consists mostly of steel, in particular of bearing steel, particularly preferably 100Cr6, in order to be able to easily handle the disadvantage that said material is not weldable in accordance with the invention. However, the bearing element may also consist of a non-metallic material, in particular of a ceramic material, as is typical for some plain bearings.
Das erfindungsgemäße Konzept stellt also darauf ab, für das Fügen von Lagerelement und Umbauteil einen Prozess vorzusehen, der auf den Einsatz von exotherm reagierenden Schichten oder Partikeln zurückzuführen ist. Diese Schichten basieren beispielsweise auf dem Einsatz von Nickel (Ni) und Aluminium (Al). Zu Details betreffend die reaktive nanokristalline Schicht wird auf die US 6,991,856 B2 ausdrücklich Bezug genommen, wo die zum Einsatz vorgesehenen reaktiven na- nokristallinen Schichten eingehend beschrieben und offenbart sind. Es handelt sich bei den vorgesehenen reaktiven nanokristallinen Schichten bevorzugt um Folien, die eine Vielzahl von dünnen Lagen aufweisen, die als eine lokale Wärmequelle fungieren können. Derartige Schichten sind handelsüblich beispielsweise unter der Bezeichnung NanoFoil® von der Firma Reactive Nano Technogies Inc., USA, erhältlich. Die genannte Schicht stellt eine thermisch instabile Schicht dar, die beispielsweise durch Einleitung elektrischer Energie aktiviert werden kann.The concept according to the invention therefore aims to provide for the joining of the bearing element and the conversion part a process which is due to the use of exothermically reacting layers or particles. These layers are based, for example, on the use of nickel (Ni) and aluminum (Al). For details regarding the reactive nanocrystalline layer, reference is made expressly to US Pat. No. 6,991,856 B2, where the reactive nanocrystalline layers intended for use are described and disclosed in detail. The reactive nanocrystalline layers provided are preferably films which have a multiplicity of thin layers which can act as a local heat source. Such layers are commercially available, for example under the name nanofoil ® from Reactive Nano Technogies Inc., USA. The said layer represents a thermally unstable layer, which can be activated, for example, by the introduction of electrical energy.
Der vorgeschlagene Fügeprozess mit den reaktiven nanokristallinen Schichten ist auch unter der Bezeichnung „Kaltfügen" bekannt, da die zur Verbindung notwendige Energie in Bruchteilen von Sekunden durch die Schicht und zwar genau und ausschließlich in der Fügestelle quasi selbst generiert wird.The proposed joining process with the reactive nanocrystalline layers is also known under the name "cold joining", since the energy required for the connection is generated in fractions of seconds through the layer, precisely and exclusively in the joint itself.
Die erfindungsgemäß vorgesehenen Schichten können beispielsweise durch Einlegen der genannten reaktiven nanokristallinen Folien aufgebaut werden. Alternativ ist es auch möglich, unter Nutzung bekannter Beschichtungsverfahren (beispielsweise durch „Physical Powder Deposition" - abgekürzt DVP) die Schicht aus reak- tivem nanokristallinem Material direkt auf zumindest eine Seite der zu fügenden Kontaktflächen (von Lagerelement und/oder Umbauteil) aufzubringen. Hierbei ist abhängig von der erreichbaren Temperatur und des zu verbindenden Materials während der thermischen Reaktion gegebenenfalls noch ein Zusatzmaterial in Form eines Lots vorteilhaft bzw. notwendig.The layers provided according to the invention can be constructed, for example, by inserting said reactive nanocrystalline films. Alternatively, it is also possible to apply the layer of reactive nanocrystalline material directly to at least one side of the contact surfaces to be joined (of bearing element and / or conversion part) using known coating methods (for example by "Physical Powder Deposition" - abbreviated to DVP) is depending on the achievable temperature and the material to be joined during the thermal reaction, if appropriate, a filler or in the form of a solder advantageous or necessary.
In vorteilhafter Weise kann der erfindungsgemäße Vorschlag so ausgeführt werden, dass die stoffschlüssige Verbindung auf das gesamte Bauteil bezogen bei nahezu Raumtemperatur erfolgen kann. Dadurch ergibt sich kein thermischer Verzug an den zu fügenden Bauteilen und keine Zerstörung bzw. Beschädigung derselben. Ferner ist keine zusätzliche Energiequelle zur Wärmeeinbringung erforderlich. Das vorgeschlagene Verfahren ist grundsätzlich für alle Arten von Lagerelementen einsetzbar (z. B. auch für Gleitlager mit keramischem Material), bei denen kostengünstig zusätzliche Bauteile hochfest befestigt werden sollen, z. B. Flansche, oder bei denen komplette Wälzlager (mit wärmempfindlichen Dichtungen) direkt stoffschlüssig mit Umbauteilen verbunden werden müssen.Advantageously, the proposal according to the invention can be carried out so that the cohesive connection based on the entire component can be carried out at near room temperature. This results in no thermal distortion of the components to be joined and no destruction or damage to the same. Furthermore, no additional energy source for heat input is required. The proposed method can basically be used for all types of bearing elements (for example, also for slide bearings with ceramic material), in which additional components are to be fastened at high cost, for. As flanges, or in which complete bearings (with heat-sensitive seals) must be directly cohesively connected with conversion parts.
Die reaktiven nanokristallinen Schichten werden bevorzugt in Form von Folien verwendet. Es ist aber auch möglich, diese Schichten in Form von pastösem Materi- al aufzubringen.The reactive nanocrystalline layers are preferably used in the form of films. However, it is also possible to apply these layers in the form of pasty material.
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:In the drawings, embodiments of the invention are shown. Show it:
Fig. 1 schematisch den Schnitt durch eine Lageranordnung, bei der ein Wälzla- ger in Form eines Axialkugellagers eingesetzt wird,1 shows schematically the section through a bearing arrangement in which a Wälzla- ger is used in the form of an axial ball bearing,
Fig. 2 schematisch den Schnitt durch eine Lageranordnung, bei der ein Wälzlager in Form eines Zylinderrollenlagers eine Welle relativ zu einem Umbauteil lagert,2 schematically shows the section through a bearing arrangement in which a rolling bearing in the form of a cylindrical roller bearing supports a shaft relative to a conversion part,
Fig. 3 schematisch den Schnitt durch eine Lageranordnung, bei der ein Gleitlager eine Welle relativ zu einem Umbauteil lagert, und3 shows schematically the section through a bearing arrangement in which a plain bearing supports a shaft relative to a conversion part, and
Fig. 4 eine vergrößerte Darstellung des stoffschlüssigen Verbundes zwischen einem Lagerelement und einem Umbauteil.Fig. 4 is an enlarged view of the cohesive composite between a bearing element and a conversion part.
In Fig. 1 ist eine Lageranordnung 1 dargestellt, die ein Wälzlager 7 in Form eines Axialkugellagers umfasst, das an einem Umbauteil 3 in Form eines Lagerträgers angeordnet ist. Genauer gesagt, ist einer der Lagerringe, nämlich das Lagerelement 2 stoffschlüssig mit dem Umbauteil 3 verbunden. Der Lagerring 2 hat eine Laufbahn 8 für die Kugeln des Lagers.In Fig. 1, a bearing assembly 1 is shown, which comprises a roller bearing 7 in the form of an axial ball bearing, which is arranged on a conversion part 3 in the form of a bearing carrier. More precisely, one of the bearing rings, namely the bearing element 2 materially connected to the Umbauteil 3. The bearing ring 2 has a raceway 8 for the balls of the bearing.
Das Lagerelement 2 und das Umbauteil 3 kontaktieren sich an einer Kontaktfläche 4. In den sich ergebenden Kontaktspalt ist eine Schicht 5 aus reaktivem nanokristal- linem Material eingebracht. Wird diese Schicht 5 aktiviert, beispielsweise durch Anlegen eines elektrischen Stroms, der durch die Schicht 5 fließt, kommt es zu einem exothermen Vorgang, der zum Aufschmelzen der sich gegenüberliegenden Oberflächen des Lagerelement 2 und des Umbauteils 3 führt und - im Zusammen- wirken mit dem Aufschmelzen der Schicht 5 selber - zu einem festen stoffschlüssigen Verbund zwischen dem Lagerelement 2 und dem Umbauteil 3.The bearing element 2 and the conversion part 3 make contact at a contact surface 4. A layer 5 of reactive nanocrystaline material is introduced into the resulting contact gap. If this layer 5 is activated, for example by applying an electric current which flows through the layer 5, an exothermic process occurs, which leads to the melting of the opposing surfaces of the bearing element 2 and the conversion part 3 and, in cooperation with the Melting of the layer 5 itself - to a solid cohesive bond between the bearing element 2 and the Umbauteil 3.
In Fig. 2 ist grundsätzlich dieselbe Situation illustriert, wobei hier ein Wälzlager 7 in Form eines Zylinderrollenlagers eine Welle 11 relativ zu dem Umbauteil 3 lagert.In Fig. 2, the same situation is basically illustrated, in which case a rolling bearing 7 in the form of a cylindrical roller bearing supports a shaft 11 relative to the Umbauteil 3.
Der Erfindungsvorschlag kann auch genauso - wie es Fig. 3 zeigt - eingesetzt werden, wenn es um die Festlegung eines Lagerelements in Form eines Gleitlagers 9 an einem Umbauteil 3 geht. Das Lagerelement 2 besteht hier aus einer aus keramischem Material bestehenden Gleitbuchse, die am Umbauteil 3 festzulegen ist. Die Gleitbuchse 2 hat eine Gleitfläche 10, über die eine Welle 1 1 gelagert wird.The proposal of the invention may also be used in exactly the same way - as shown in FIG. 3 - when it comes to fixing a bearing element in the form of a sliding bearing 9 on a conversion part 3. The bearing element 2 consists here of a ceramic bush consisting of sliding bush, which is set on the conversion part 3. The sliding bush 2 has a sliding surface 10, via which a shaft 1 1 is mounted.
Wiederum wird zur stoffschlüssigen Festlegung des Lagerelements 2 am Umbauteil 3 eine Schicht 5 aus reaktivem nanokristallinem Material eingesetzt.Again, a layer 5 of reactive nanocrystalline material is used for cohesive fixing of the bearing element 2 on the conversion part 3.
Wie Fig. 4 zeigt, kann auch zwischen der reaktiven nanokristallinen Schicht 5 und dem Lagerelement 2 und/oder dem Umbauteil 3 eine Schicht 6 eines Lots angeordnet werden, bevor die Schicht 5 aktiviert und die stoffschlüssige Verbindung somit hergestellt wird. BezugszeichenlisteAs FIG. 4 shows, it is also possible to arrange a layer 6 of a solder between the reactive nanocrystalline layer 5 and the bearing element 2 and / or the conversion element 3 before the layer 5 is activated and the cohesive connection is thus produced. LIST OF REFERENCE NUMBERS
1 Lageranordnung1 bearing arrangement
2 Lagerelement2 bearing element
3 Umbauteil3 conversion part
4 Kontaktfläche4 contact surface
5 reaktive nanokristalline Schicht5 reactive nanocrystalline layer
6 Schicht eines Lots6 layer of a lot
7 Wälzlager7 rolling bearings
8 Laufbahn8 career
9 Gleitlager9 plain bearings
10 Gleitfläche10 sliding surface
1 1 Welle 1 1 shaft

Claims

P a t e n t a n s p r ü c h eVerfahren zur Herstellung einer Lageranordnung und Lageranordnung P atentansprü CH eVerfahren for producing a bearing assembly and bearing assembly
1. Verfahren zur Herstellung einer Lageranordnung (1), umfassend mindestens ein Lagerelement (2) und mindestens ein Umbauteil (3), wobei das Lagerelement (2) und das Umbauteil (3) bei bestimmungsgemäßem Gebrauch an einer Kontaktfläche (4) aneinander liegen, gekennzeichnet durch die Verfahrensschritte: a) Anordnen des Lagerelements (2) und des Umbauteils (3) in der bestimmungsgemäß gewünschten relativen Lage zueinander und Platzieren einer reaktiven nanokristallinen Schicht (5) zwischen dem Lagerelement (2) und dem Umbauteil (3) im Bereich der Kontaktfläche (4); b) Auslösen einer exothermen Reaktion in der reaktiven nanokristallinen Schicht (5), so dass es durch zumindest teilweises Erhitzen der sich im1. A method for producing a bearing arrangement (1), comprising at least one bearing element (2) and at least one conversion part (3), wherein the bearing element (2) and the conversion part (3) when used as intended lie against one another at a contact surface (4), characterized by the method steps: a) arranging the bearing element (2) and the conversion part (3) in the intended relative position relative to one another and placing a reactive nanocrystalline layer (5) between the bearing element (2) and the conversion part (3) in the region of Contact surface (4); b) triggering an exothermic reaction in the reactive nanocrystalline layer (5), so that it is at least partially heated in the
Bereich der Kontaktfläche (4) befindlichen Oberfläche des Lagerelements (2) und/oder des Umbauteils (3) zu einer stoffschlüssigen Verbindung zwischen dem Lagerelement (2) und dem Umbauteil (3) kommt.Area of the contact surface (4) located surface of the bearing element (2) and / or the Umbauteils (3) to a material connection between the bearing element (2) and the Umbauteil (3) comes.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Platzieren der reaktiven nanokristallinen Schicht (5) zwischen dem Lagerelement (2) und dem Umbauteil (3) gemäß Schritt a) von Anspruch 1 erfolgt, während oder nachdem das Lagerelement (2) und das Umbauteil (3) in der bestimmungsgemäß gewünschten Relativlage angeordnet werden oder worden sind. 2. The method according to claim 1, characterized in that the placing of the reactive nanocrystalline layer (5) between the bearing element (2) and the conversion part (3) according to step a) of claim 1, during or after the bearing element (2) and the conversion part (3) are arranged in the intended relative position desired or have been.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Platzieren der reaktiven nanokristallinen Schicht (5) zwischen dem Lagerelement (2) und dem Umbauteil (3) gemäß Schritt a) von Anspruch 1 erfolgt, bevor das Lager- element (2) und das Umbauteil (3) in der bestimmungsgemäß gewünschten3. The method according to claim 1, characterized in that the placing of the reactive nanocrystalline layer (5) between the bearing element (2) and the conversion part (3) according to step a) of claim 1, before the storage element (2) and the conversion part (3) in the intended manner
Relativlage angeordnet werden.Relative position can be arranged.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die reaktive na- nokristalline Schicht (5) auf das Lagerelement (2) und/oder auf das Umbauteil (3) im Bereich der Kontaktfläche (4) aufgebracht wird.4. The method according to claim 3, characterized in that the reactive nanocrystalline layer (5) on the bearing element (2) and / or on the conversion part (3) in the region of the contact surface (4) is applied.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass vor der Durchführung des Schrittes a) gemäß Anspruch 1 im Bereich der Kontaktfläche (4) zwischen dem Lagerelement (2) und der reaktiven nanokristalli- nen Schicht (5) und/oder zwischen dem Umbauteil (3) und der nanokristallinen Schicht (5) zumindest abschnittsweise eine Schicht eines Zusatzmaterials (6), insbesondere eines Lots oder eines lothaltigen Materials, platziert wird.5. The method according to any one of claims 1 to 4, characterized in that prior to performing step a) according to claim 1 in the region of the contact surface (4) between the bearing element (2) and the reactive nanocrystalline NEN layer (5) and / or at least in sections a layer of an additional material (6), in particular a solder or an inert material, is placed between the conversion part (3) and the nanocrystalline layer (5).
6. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass vor der Durchführung des Schrittes a) gemäß Anspruch 1 das Lagerelement6. The method according to any one of claims 1 to 4, characterized in that prior to the implementation of step a) according to claim 1, the bearing element
(2) und/oder das Umbauteil (3) im Bereich der Kontaktfläche (4) mit einer Be- schichtung (6) versehen wird, wobei die Beschichtung (6) ein Lot ist oder ein Lot aufweist.(2) and / or the conversion part (3) in the region of the contact surface (4) is provided with a coating (6), wherein the coating (6) is a solder or has a solder.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Auslösen der exothermen Reaktion in der reaktiven nanokristallinen Schicht (5) gemäß Schritt b) von Anspruch 1 erfolgt, indem ein elektrischer Strom durch die reaktive nanokristalline Schicht (5) geleitet wird. 7. The method according to any one of claims 1 to 6, characterized in that the triggering of the exothermic reaction in the reactive nanocrystalline layer (5) according to step b) of claim 1, by passing an electric current through the reactive nanocrystalline layer (5) becomes.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass während der exothermen Reaktion in der reaktiven nanokristallinen Schicht (5) gemäß Schritt b) von Anspruch 1 das Lagerelement (2) und das Umbauteil (3) relativ zueinander aneinander gedrückt werden.8. The method according to any one of claims 1 to 7, characterized in that during the exothermic reaction in the reactive nanocrystalline layer (5) according to step b) of claim 1, the bearing element (2) and the Umbauteil (3) are pressed relative to each other ,
9. Lageranordnung (1), umfassend mindestens ein Lagerelement (2) und mindestens ein Umbauteil (3), wobei das Lagerelement (2) und das Umbauteil (3) bei bestimmungsgemäßem Gebrauch an einer Kontaktfläche (4) aneinander liegen, dadurch gekennzeichnet, dass eine reaktive nanokristalline Schicht (5) im Bereich der Kontaktfläche (4) angeordnet ist, wobei die reaktive nanokristalline Schicht (5) nach Ausführung einer exothermen Reaktion eine stoffschlüssige Verbindung zwischen dem Lagerelement (2) und dem Umbauteil (3) bildet.9. bearing arrangement (1), comprising at least one bearing element (2) and at least one conversion part (3), wherein the bearing element (2) and the conversion part (3) when used as intended on a contact surface (4) to each other, characterized in that a reactive nanocrystalline layer (5) in the region of the contact surface (4) is arranged, wherein the reactive nanocrystalline layer (5) after execution of an exothermic reaction forms a material connection between the bearing element (2) and the conversion part (3).
10. Lageranordnung nach Anspruch 9, dadurch gekennzeichnet, dass die reaktive nanokristalline Schicht (5) als separate Struktur zwischen das Lagerelement10. Bearing arrangement according to claim 9, characterized in that the reactive nanocrystalline layer (5) as a separate structure between the bearing element
(2) und das Umbauteil (3) eingebracht ist.(2) and the conversion part (3) is introduced.
1 1. Lageranordnung nach Anspruch 9, dadurch gekennzeichnet, dass die reaktive nanokristalline Schicht (5) als Beschichtung auf das Lagerelement (2) und/oder auf das Umbauteil (3) aufgebracht ist.1 1. A bearing arrangement according to claim 9, characterized in that the reactive nanocrystalline layer (5) is applied as a coating on the bearing element (2) and / or on the conversion part (3).
12. Lageranordnung nach einem der Ansprüche 9 bis 1 1 , dadurch gekennzeichnet, dass zwischen der reaktiven nanokristallinen Schicht (5) und dem Lagerelement (2) und/oder zwischen der reaktiven nanokristallinen Schicht (5) und dem Umbauteil (3) eine Schicht aus einem Lot (6) angeordnet ist.12. Bearing arrangement according to one of claims 9 to 1 1, characterized in that between the reactive nanocrystalline layer (5) and the bearing element (2) and / or between the reactive nanocrystalline layer (5) and the conversion part (3) comprises a layer a Lot (6) is arranged.
13. Lageranordnung nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass das Lagerelement (2) Bestandteil eines Wälzlagers (7) ist und mindestens eine Laufbahn (8) für Wälzkörper aufweist. 13. Bearing arrangement according to one of claims 9 to 12, characterized in that the bearing element (2) is part of a rolling bearing (7) and has at least one raceway (8) for rolling elements.
14. Lageranordnung nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass das Lagerelement (2) Bestandteil eines Gleitlagers (9) ist und mindestens eine Gleitfläche (10) aufweist.14. Bearing arrangement according to one of claims 9 to 12, characterized in that the bearing element (2) is part of a sliding bearing (9) and has at least one sliding surface (10).
15. Lageranordnung nach einem der Ansprüche 9 bis 14, dadurch gekennzeichnet, dass das Umbauteil (3) ein Lagerträger ist.15. Bearing arrangement according to one of claims 9 to 14, characterized in that the conversion part (3) is a bearing carrier.
16. Lageranordnung nach Anspruch 15, dadurch gekennzeichnet, dass der Lager- träger (3) mindestens eine kreisförmige Ausnehmung für die Aufnahme des16. Bearing arrangement according to claim 15, characterized in that the bearing carrier (3) has at least one circular recess for receiving the
Lagerrings eines Wälzlagers aufweist, wobei die reaktive nanokristalline Schicht (5) entlang des Umfangs der kreisförmigen Ausnehmung angeordnet ist.Has bearing ring of a rolling bearing, wherein the reactive nanocrystalline layer (5) is arranged along the circumference of the circular recess.
17. Lageranordnung nach einem der Ansprüche 9 bis 15, dadurch gekennzeichnet, dass das Umbauteil (3) aus Blech besteht.17. Bearing arrangement according to one of claims 9 to 15, characterized in that the conversion part (3) consists of sheet metal.
18. Lageranordnung nach einem der Ansprüche 9 bis 17, dadurch gekennzeichnet, dass das Lagerelement (2) aus Stahl, insbesondere aus Wälzlagerstahl, beson- ders bevorzugt aus lOOCrό, besteht.18. Bearing arrangement according to one of claims 9 to 17, characterized in that the bearing element (2) made of steel, in particular bearing steel, particularly preferably from lOOCrό exists.
19. Lageranordnung nach einem der Ansprüche 9 bis 16, dadurch gekennzeichnet, dass das Lagerelement (2) zumindest teilweise aus einem nichtmetallischen Material besteht.19. Bearing arrangement according to one of claims 9 to 16, characterized in that the bearing element (2) consists at least partially of a non-metallic material.
20. Lageranordnung nach Anspruch 19, dadurch gekennzeichnet, dass das Lagerelement (2) aus Keramikmaterial besteht. 20. Bearing arrangement according to claim 19, characterized in that the bearing element (2) consists of ceramic material.
EP09763846A 2008-12-03 2009-11-20 Method for the production of a bearing arrangement, and bearing arrangement Withdrawn EP2370705A1 (en)

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DE102008060116A DE102008060116A1 (en) 2008-12-03 2008-12-03 Method for producing a bearing arrangement and bearing arrangement
PCT/EP2009/008266 WO2010063379A1 (en) 2008-12-03 2009-11-20 Method for the production of a bearing arrangement, and bearing arrangement

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