WO2006097256A1 - Procede de production d'un ensemble palier - Google Patents

Procede de production d'un ensemble palier Download PDF

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Publication number
WO2006097256A1
WO2006097256A1 PCT/EP2006/002254 EP2006002254W WO2006097256A1 WO 2006097256 A1 WO2006097256 A1 WO 2006097256A1 EP 2006002254 W EP2006002254 W EP 2006002254W WO 2006097256 A1 WO2006097256 A1 WO 2006097256A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing ring
carbon
bearing
carbon concentration
surface layer
Prior art date
Application number
PCT/EP2006/002254
Other languages
German (de)
English (en)
Inventor
Helmut Hauck
Alexander Dilje
Original Assignee
Ab Skf
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 Ab Skf filed Critical Ab Skf
Publication of WO2006097256A1 publication Critical patent/WO2006097256A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • 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
    • F16C35/067—Fixing them in a 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
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/60—Ferrous alloys, e.g. steel alloys
    • F16C2204/62—Low carbon steel, i.e. carbon content below 0.4 wt%
    • 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

Definitions

  • the invention relates to a method for producing a bearing arrangement which has at least one bearing ring, in particular a roller bearing ring, as well as a carrier element.
  • bearing arrangements of the generic type are required, in which a bearing, in particular a roller bearing, is fixedly connected to a support member to receive and transmit the operating forces of the bearing can.
  • the problem is the production of a solid and stable connection between bearing ring and support element when the material of the bearing ring itself welded must become. In order for the bearing ring to have sufficient strength for its use, it is necessary to harden it.
  • carburized high carbon content material again causes the problem of poor weldability.
  • the invention is therefore based on the basis of creating a bearing assembly of the type mentioned, which allows both a hardening of the bearing ring and a direct welding of the ring with the support element.
  • the production of the bearing assembly with known and in practice usually available machinery and equipment should be straightforward. So it should be an economic solution for the production of carbon-hardened bearing rings, especially rolling bearing rings, created, which are directly weldable. The weld should connect the bearing ring thereby directly to the support element.
  • the invention thus provides that in a first sub-process of the bearing ring is carburized. Then the carburized area is removed there again in a subsequent step, z. B. turned off, where the support element to be welded later. After the subsequent hardening, the carrier element is then welded. Since the carburized region has been removed from the bearing ring in the connection region of the carrier element, there is a sufficiently low carbon content for welding. However, since the other surface areas of the bearing ring have remained carburized, these areas after curing to a sufficiently high hardness.
  • the mechanical machining operation according to the above step a) is preferably a turning operation, or the operation has such.
  • step d) and before step e the bearing ring is subjected to a hard machining operation; this is usually a grinding process.
  • the first carbon concentration is preferably so low that a firm and stable weld between the bearing ring and the carrier element can be produced.
  • proven values are below 0.2%, preferably below 0.1%, for the carbon content or the carbon concentration.
  • the second carbon concentration is advantageous, however, so great that a hardening of the material is easily possible; proven values for the second carbon concentration in the steel are above 0.2%, preferably above 0.5%.
  • the removal of the carbon-enriched surface layer according to the above step c) is preferably carried out so that the bearing ring in this area after the
  • Removing the enriched surface layer has a carbon concentration, which is a solid and stable weld between the bearing ring and the
  • Carrier element allows. It is preferably provided that the
  • Carbon concentration at the surface of the bearing ring in the portion after removal of the enriched surface layer below 0.2%, preferably below 0.1%. Removing the carbon-enriched
  • Edge layer is advantageously done by a turning process.
  • the bearing ring can initially be manufactured with a protruding section that exceeds the intended
  • the bearing ring according to the above step a) is produced with a preferably cylindrical outer or inner surface such that the
  • Bearing ring in the said portion of the bearing ring has an allowance.
  • the radial allowance is preferably between 1 mm and 5 mm.
  • the welding of the bearing ring with the carrier element according to the above step e) can be carried out by means of laser beam welding or by electron beam welding. But there are also classic welding procedures possible.
  • the bearing ring is preferably made of case-hardened steel during its production according to the above step a).
  • the support member may also be formed by a spacer which holds two rolling bearings whose axes are parallel to each other at a defined distance.
  • a varied embodiment of the invention is based on the fact that the carrier element is formed by the ring of another rolling bearing.
  • two adjacent bearings whose axes are parallel to each other, are welded together at their outer rings, without a separate support member is used; the carrier element is rather formed by the further bearing ring. It is also possible that two bearing rings are welded together at their end faces.
  • a compact bearing assembly is achieved, on the one hand by a solid and stable direct weld between one of the bearing rings and the carrier element and on the other hand also comprises a bearing ring having a high hardness and thus the required wear resistance.
  • Fig. 5 shows the bearing outer ring of the bearing assembly according to an alternative embodiment in a manufacturing state according to Fig. 3 and
  • FIG. 6 shows the bearing outer ring of the bearing arrangement according to FIG. 5 in a manufacturing state according to FIG. 4.
  • a bearing assembly 1 is outlined, comprising a roller bearing with a bearing outer ring 2.
  • a plate-shaped support member 3 is laterally fixed, by welding. The weld is provided with the reference numeral 6.
  • the welding of the carrier element 3 on the bearing ring 2 was carried out here by laser welding.
  • the bearing assembly 1 can be defined with a screw connection 7 indicated only schematically, d. H. the carrier element 2 has corresponding through holes for screws.
  • the bearing assembly 1 is manufactured as follows:
  • the bearing ring 2 is manufactured mechanically.
  • the present after this process bearing ring 2 is outlined in Fig. 2.
  • machining eg turning
  • non-cutting eg rolling
  • the sketched in Fig. 2 geometry is achieved by a turning operation.
  • the bearing ring 2 consists of case steel with - still - low carbon concentration C 1 . This is less than 0.2%, preferably less than 0.1%.
  • Fig. 2 it is indicated that - which is done subsequently - carbon C is supplied to the bearing ring.
  • the prefabricated bearing ring 2 is introduced into a carbon atmosphere, in which a carburizing takes place in a known manner.
  • the result of this process step can be seen in FIG. There, it is indicated that carbon has accumulated in the boundary layer 4 of the bearing ring 2, ie on all sides of its surface, so that a carbon concentration C 2 of more than 0.2% is present in the boundary layer 4, preferably above 0.5%.
  • the bearing ring surface is curable, but no longer weldable. Therefore, in the subsequent step - as can be seen from FIG. 4 - the carburized layer is removed again in a partial region 5.
  • a rectangular in radial section groove is screwed in one of the two side portions of the bearing ring 2. It is indicated in FIG. 4 that material with a low carbon concentration Ci appears again at the groove surface.
  • the carrier element 3 (see Fig. 1) is inserted into the groove-shaped recess and then welded into it.
  • the welded connection has high strength because the welded joint between the material of the carrier element (low carbon content) and the material of the bearing ring 2 at the point of contact with the carrier element 3 with low carbon content C 1 is produced.
  • FIGS. 5 and 6 an alternative exemplary embodiment is sketched:
  • the bearing ring 2 is rotated in its mechanical production with an oversize x.
  • the cylindrical outer surface of the bearing ring 2 has in the portion 5 radially a larger amount, namely a larger by the allowance x radius.
  • Fig. 5 the state after carburizing is shown. As can be seen, the entire edge region of the bearing ring 2 again has a higher carbon concentration C 2 , which is higher than the carbon content C 1 of the remaining ring.
  • the allowance x is removed, ie, turned off, for example, so that the contour sketched in FIG. 6 results.
  • a low carbon concentration ci on the surface of the subregion 5, which is later welded to the carrier element 3, which enables optimum welding. Ie. the carburized region present in subregion 5 is removed or at least significantly reduced until a sufficiently low carbon concentration for welding is present.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un procédé de production d'un ensemble palier (1) comprenant au moins une bague de palier (2), en particulier une bague de palier de roulement, et un élément de support (3). Pour créer une liaison de soudure durable entre la bague de palier et l'élément de support, le procédé selon l'invention comprend les étapes consistant : a) à produire la bague de palier (2) à partir d'acier, à l'aide d'un processus de traitement mécanique avec ou sans enlèvement de copeaux, l'acier utilisé présentant une première concentration en carbone (c1) ; b) à enrichir thermochimiquement l'ensemble de la couche périphérique (4) de la bague de palier (2) en carbone (C), de manière que l'ensemble de la couche périphérique (4) présente une deuxième concentration en carbone (c2) qui est supérieure à ladite première concentration en carbone (c1) ; c) à supprimer au moins une partie de la couche périphérique (4) enrichie en carbone au niveau d'une zone partielle (5) de la bague de palier (2) ; d) à tremper la bague de palier (2) ; e) à souder la bague de palier (2) avec l'élément de support (3), le cordon de soudure (6) étant placé dans la zone partielle (5) où la couche périphérique (4) enrichie en carbone a été supprimée.
PCT/EP2006/002254 2005-03-18 2006-03-11 Procede de production d'un ensemble palier WO2006097256A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005012602A DE102005012602B3 (de) 2005-03-18 2005-03-18 Verfahren zur Herstellung einer Lageranordnung
DE102005012602.2 2005-03-18

Publications (1)

Publication Number Publication Date
WO2006097256A1 true WO2006097256A1 (fr) 2006-09-21

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ID=36385581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/002254 WO2006097256A1 (fr) 2005-03-18 2006-03-11 Procede de production d'un ensemble palier

Country Status (2)

Country Link
DE (1) DE102005012602B3 (fr)
WO (1) WO2006097256A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493446A (zh) * 2015-01-23 2015-04-08 中航工业哈尔滨轴承有限公司 一种渗碳钢轴承套圈加工方法
EP2650073A4 (fr) * 2011-04-22 2016-03-30 Aisin Aw Co Composant en acier complexe et son procédé de production

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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DE102005058773A1 (de) * 2005-12-09 2007-06-14 Schaeffler Kg Bauanordnung für Wälzlager und Verfahren zu deren Herstellung
DE102005058774A1 (de) * 2005-12-09 2007-06-14 Schaeffler Kg Verfahren zum Verbinden von Trägern mit Wälzlagern
DE102006040814A1 (de) * 2006-08-31 2008-03-06 Schaeffler Kg Verfahren zum Erzeugen einer hoch einsatzhärtbaren Wälzlagerkomponente
DE102006055028A1 (de) * 2006-11-22 2008-05-29 Schaeffler Kg Radialwälzlager, insbesondere zur Lagerung von Wellen in Windkraftgetrieben
AT513429B1 (de) * 2012-09-20 2014-07-15 Miba Sinter Austria Gmbh Verfahren zur Herstellung einer Sinterbauteilbaugruppe
DE102013220447A1 (de) * 2013-10-10 2015-04-16 Schaeffler Technologies Gmbh & Co. Kg Innenringfixierung über Schweißverbindung

Citations (2)

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US3806214A (en) * 1972-06-26 1974-04-23 Timken Co Bearing assembly having a unitized hub
US5037214A (en) * 1988-02-29 1991-08-06 The Timken Company Double row tapered roller bearing assembly

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DE1165284B (de) * 1958-02-26 1964-03-12 Timken Roller Bearing Co Die Verwendung eines Stahles als Werkstoff fuer im Einsatz zu haertende Gegenstaende
AU2378970A (en) * 1969-12-31 1972-06-29 Rolls-Royce Limited Improvements in welding
DE2063360A1 (de) * 1970-12-23 1972-08-24 Bosch Gmbh Robert Verfahren zum Befestigen von Lagern
US3737204A (en) * 1971-11-30 1973-06-05 Fmc Corp Extended life bearing
DE3634458A1 (de) * 1986-10-09 1988-04-14 Union Rheinische Braunkohlen Vorrichtung zur verstaerkung der aufhaengung von kruemmern der spaltrohre von ethylenanlagen und verfahren zu ihrer herstellung
DE59904169D1 (de) * 1998-05-12 2003-03-06 Steyr Daimler Puch Ag Verfahren zum verbinden eines gussteiles mit einem teil aus einsatzgehärtetem stahl und bauteil erhältlich durch dieses verfahren
DE20007309U1 (de) * 1999-04-28 2000-08-03 Skf Gmbh Lageranordnung
DE19919201C1 (de) * 1999-04-28 2000-06-21 Skf Gmbh Lagerschild für die Aufnahme mindestens zweier Lager und Verfahren zur Befestigung mindestens zweier Lager in einem Lagerschild
DE19935469A1 (de) * 1999-07-28 2000-05-11 Skf Gmbh Verfahren zur Befestigung eines Lagers in einem Lagerschild und Lageranordnung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806214A (en) * 1972-06-26 1974-04-23 Timken Co Bearing assembly having a unitized hub
US5037214A (en) * 1988-02-29 1991-08-06 The Timken Company Double row tapered roller bearing assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2650073A4 (fr) * 2011-04-22 2016-03-30 Aisin Aw Co Composant en acier complexe et son procédé de production
CN104493446A (zh) * 2015-01-23 2015-04-08 中航工业哈尔滨轴承有限公司 一种渗碳钢轴承套圈加工方法

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