WO2024251320A1 - Bague de palier et procédé de production de celle-ci, et palier à roulement ou palier lisse ayant au moins une telle bague de palier - Google Patents

Bague de palier et procédé de production de celle-ci, et palier à roulement ou palier lisse ayant au moins une telle bague de palier Download PDF

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Publication number
WO2024251320A1
WO2024251320A1 PCT/DE2024/100228 DE2024100228W WO2024251320A1 WO 2024251320 A1 WO2024251320 A1 WO 2024251320A1 DE 2024100228 W DE2024100228 W DE 2024100228W WO 2024251320 A1 WO2024251320 A1 WO 2024251320A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
ring
ceramic layer
plastic material
bearing ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2024/100228
Other languages
German (de)
English (en)
Inventor
Bjoern Mueller
Milan Madron
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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
Priority claimed from DE102024107407.8A external-priority patent/DE102024107407A1/de
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to CN202480033330.2A priority Critical patent/CN121152932A/zh
Publication of WO2024251320A1 publication Critical patent/WO2024251320A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F16C33/62—Selection of substances
    • 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
    • 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
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/02—Mechanical properties
    • F16C2202/10—Porosity
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/30—Electric properties; Magnetic properties
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
    • F16C2206/42—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal based on ceramic oxides
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
    • F16C2206/42—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal based on ceramic oxides
    • F16C2206/44—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal based on ceramic oxides based on aluminium oxide (Al2O3)
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
    • 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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/42—Coating surfaces by spraying the coating material, e.g. plasma spraying
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/60—Thickness, e.g. thickness of coatings
    • 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
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/121—Use of special materials
    • 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
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/122—Multilayer structures of sleeves, washers or liners
    • F16C33/124—Details of overlays
    • 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
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/208—Methods of manufacture, e.g. shaping, applying coatings

Definitions

  • the invention relates to a bearing of a rolling bearing or plain bearing, comprising a metallic ring body and a ceramic layer arranged at least on the outer circumference or at least on the inner circumference of the ring body and formed with open pores by thermal spraying, wherein an open pore space of the ceramic layer is filled with a plastic material.
  • the ceramic layer and the hardened plastic material form an electrically insulating coating.
  • the invention further relates to a method for producing such a bearing ring and a rolling bearing or plain bearing, comprising at least one such bearing ring.
  • WO 2014 174 382 A1 describes a bearing ring with a body that has an electrically insulating coating made of a ceramic layer with 10 to 50% pores and a plastic that is intended to fill the pores and form a coating on the ceramic layer.
  • the ceramic layer is applied to the body using a thermal spraying process and is formed in particular from one or more oxides, nitride or spinel.
  • the electrically insulating coating on the bearing ring ensures high insulation performance against high-frequency or capacitive currents when the bearing ring is used in a rolling bearing.
  • DE 100 29 917 A1 describes a molded body having an electrically conductive base body, on which at least one porous layer is applied, which is infiltrated with a polymerizable plastic in a vacuum.
  • the porous layer which in particular has a pore content of up to 20 vol. %, can be applied to the base body by thermal spraying.
  • the porous layer is preferably made of a material from a group comprising, among others, ceramic materials in the form of chromium oxide, aluminum oxide, zirconium oxide, spinels of aluminum oxide and aluminum titanate, as well as mullite.
  • the polymerized The infiltrated plastic is hardened by heating or UV radiation.
  • the infiltrated layer is intended to protect the base body from corrosion and to provide electrical insulation.
  • a bearing ring of a rolling bearing or plain bearing comprising a metallic ring body and a ceramic layer arranged at least on the outer circumference or at least on the inner circumference of the ring body, formed with open pores by thermal spraying and containing a pore volume in the range from 2 vol.% to less than 10 vol.%, in that an open pore space of the ceramic layer is filled with a plastic material which comprises at least one polymeric binder, at least one reactive diluent, at least one photoinitiator and at least one hardener and is at least partially cured by means of UV radiation, wherein the ceramic layer and the cured plastic material form an electrically insulating coating.
  • Such a bearing ring can be produced quickly and cost-effectively, and the plastic material can be cured in a maximum of 10 minutes.
  • At least 20%, in particular at least 50%, preferably at least 80%, of the open pores, in particular the pores arranged on the surface of the ceramic layer, are filled by the plastic material.
  • a correspondingly low viscosity of the plastic material in particular in the range of a dynamic viscosity q in the range of ⁇ 250 ⁇ 25 mPa*s (at 20 °C), infiltration of the ceramic layer can be enabled and improved.
  • the not yet cured plastic material therefore preferably has a dynamic viscosity q in the range of 250 ⁇ 25 mPa*s (at 20°C) in order to ensure sufficient infiltration of the ceramic layer.
  • a plastic material By combining a photoinitiator with at least one polymeric binder, a plastic material can be made available that can be at least partially or completely cured by UV irradiation, whereby the activation energy introduced by the UV irradiation can cause polymerization of the plastic material not directly irradiated by the UV irradiation. This also allows areas of the plastic material to be reliably cured that cannot be irradiated by a UV lamp, for example, particularly because these areas are located within pores and not on the surface of the ceramic layer.
  • Photoinitiators can decompose after absorbing UV light and thus form reactive radicals or cations that can initiate polymerization of the plastic material, in particular the polymer components. It is preferred that the photoinitiator is preferably a radical photoinitiator.
  • the at least one photoinitiator can be one from the group of a-hydroxy, a-alkoxy or a-amino aryl ketones, phosphine oxides, in particular acylphosphine oxides and/or combinations thereof.
  • the aforementioned photoinitiators can reliably trigger polymerization, in particular chain polymerization, after UV irradiation and therefore enable essentially complete curing of the plastic material.
  • the viscosity of the plastic material can be adjusted so that the plastic material can be introduced into the pores of the ceramic layer in a reliable manner.
  • the addition of reactive thinners can also improve the adhesion and cross-linking of the plastic material on the ceramic layer can be improved.
  • the at least one thinner can comprise acrylic acid esters, for example.
  • the thinner is selected from the group comprising vinyl esters, mono-, di-, tri- or poly(meth)acrylates, such as hydroxyalkyl(meth)acrylates, such as hydroxypropyl methacrylate, such as trimethyl-1,5pentanediol diacrylate, other (meth)acrylic acid esters, such as acetoacetoxyalkyl(meth)acrylate, (meth)acrylic acid methyl ester, butanediol di(meth)acrylate, diacrylates, ethanediol di(meth)acrylate, diethyl glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, or polyethylene glycol di(meth)acrylate; styrenes, such as styrene, a-methylstyrene, vinyltoluene, butylstyrene, divinylbenzene, e
  • styrenes such as
  • the at least one binder can be a water-soluble binder.
  • the binder preferably comprises urethane acrylate.
  • it can be an OH-functional acrylate, in particular urethane acrylate.
  • a further preferred embodiment of the invention is characterized in that the binder is selected from the group comprising acrylates, in particular methyl methacrylate, (poly)urethane acrylate, isocyanate, silicone, silicate, epoxy resin, polyester, in particular unsaturated polyester, vinyl ester, polyester resin, in particular unsaturated polyester resin, vinyl ester resin, phenol-formaldehyde resin, diallyl phthalate resin, methacrylate resin, polyurethane, amino resins, such as melamine resin, in particular hexamethoxymethylmelamine, and/or urea resin, and/or combinations thereof.
  • the aforementioned components can, for example, enable advantageous sealing and crosslinking properties for the plastic material.
  • the binder is preferably present in the plastic material in a range from 20 to 70 wt.%, in particular from 30 to 55 wt.%, particularly preferably from 35 to 45 wt.%.
  • the at least one diluent or reactive diluent is preferably contained in the sealant in a range of 30 to 70 wt.%, in particular in a range of 40 to 60 wt.%.
  • the thinner is selected from the group comprising vinyl esters, mono-, di-, tri- or poly-(meth)acrylates, such as hydroxyalkyl(meth)acrylates, such as hydroxypropyl methacrylate, such as trimethyl-1,5pentanediol diacrylate, other (meth)acrylic acid esters, such as acetoacetoxyalkyl(meth)acrylate, (meth)acrylic acid methyl ester, butanediol di(meth)acrylate, diacrylates, ethanediol di(meth)acrylate, diethyl glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, or polyethylene glycol di(meth)acrylate; styrenes, such as styrene, a-methylstyrene, vinyltoluene, butylstyrene, divinylbenzene,
  • additives to the plastic material in order to achieve certain desired properties.
  • a drying agent in particular a drying agent comprising zinc
  • a catalyst can also be added to improve the curing properties of the plastic material.
  • the catalyst can comprise p-toluenesulfonic acid.
  • the addition of additives such as at least one UV stabilizer and/or at least one antioxidant has also proven to be effective, particularly in order to suppress color changes of the cured plastic material with increasing usage time of the bearing ring under the influence of temperature.
  • the plastic material further comprises at least one hardener or a hardener mixture.
  • the addition of a hardener can further accelerate the hardening of the plastic material.
  • the hardener or the hardener mixture is preferably selected from the group comprising polyamine amides, polyamines, polyamide armines, phenalkamines, phenalkamin amides, isocyanates, and/or combinations thereof.
  • the hardening of the sealing agent arranged in the pores can be further improved as a result.
  • the plastic material preferably comprises 40 to 45% by weight of a binder, in particular urethane acrylate, 35 to 40% by weight of a first reactive diluent, in particular isobornyl acrylate, 15 to 20% by weight of a second reactive diluent, in particular trimethyl-1,5pentanediol diacrylate, 3 to 4% by weight of a photoinitiator, in particular phosphine oxide, and up to 2% by weight of an additive, in particular a drying agent comprising zinc.
  • a binder in particular urethane acrylate
  • a first reactive diluent in particular isobornyl acrylate
  • 15 to 20% by weight of a second reactive diluent in particular trimethyl-1,5pentanediol diacrylate
  • a photoinitiator in particular phosphine oxide
  • an additive in particular a drying agent comprising zinc.
  • the individual components in this example add up to 100% by weight.
  • Such a plastic material is applied, for example, to the surface of a ceramic layer that is to be sealed in an atmospheric application (i.e. without a vacuum atmosphere). Due to the low viscosity, the plastic material can penetrate deep into the open pores. Preferably, the penetration depth is at least 80%. Alternatively, the plastic material can also be applied to the ceramic layer under a protective gas atmosphere or in a vacuum.
  • the plastic material is preferably applied to the ceramic layer by spraying, brushing, squeegeeing or dipping.
  • the ceramic layer preferably a maximum of 10% of the open pores have a pore diameter in the range of >20 pm to ⁇ 35 pm and the remaining open pores preferably have a pore diameter of ⁇ 20 pm. This ensures that the plastic material penetrates into the open pores.
  • the ceramic layer is preferably made of aluminum oxide or of aluminum oxide with proportions of titanium dioxide and/or silicon dioxide or of mullite.
  • the ceramic layer is preferably made of an aluminum silicate with a proportion of Al2O3 in the range of 70 to 80 wt.% and of SiO2 in the range of 20 to 30 wt.%.
  • the ceramic layer preferably also contains ⁇ 1 wt.% TiC or 0.1 to 3 wt.% Cr2Os.
  • the thickness of the electrically insulating coating is in particular in the range of 0.05 to 2 mm.
  • the object is further achieved by a method for producing the bearing ring according to the invention with the following steps: a) providing the metallic ring body, b) applying the ceramic layer to the ring body by means of thermal spraying, c) optionally evacuating the coated ring body, d) infiltrating the ceramic layer with the plastic material, e) irradiating the infiltrated ceramic layer with ultraviolet light while at least partially curing the plastic material and optionally storing the bearing ring at room temperature or a temperature of at least 120 °C, wherein the irradiation and optional storage takes place over a total of a maximum of 10 minutes, preferably a maximum of 2 minutes, wherein the plastic material is completely cured.
  • the irradiation in step e) is particularly preferably carried out over a maximum period of 1 minute.
  • Hardening of the plastic material is carried out in particular by irradiation with a UV lamp for 30 to 60 seconds.
  • any UV lamp can be used.
  • a preferred UV lamp has the following specifications: 250 W; Fe doped; light output approx. 800 mW/cm 2 ; quartz glass filter; wavelength: 320-400 nm.
  • further hardening preferably takes place.
  • the curing step takes place as part of a polymerization, so that the plastic material arranged in the pores, which cannot be irradiated by the UV lamp, also cures essentially completely.
  • the further curing step is preferably between 30 and 60 seconds, so that curing can be carried out in under 2 minutes, in particular in under 1 minute.
  • the bearing ring is preferably stored at room temperature or a temperature of at least 120 °C.
  • the not yet cured plastic material is preferably applied with a dynamic viscosity rj in the range of 250 ⁇ 25 mPa*s (at 20°C) to ensure sufficient infiltration of the ceramic layer.
  • a rolling bearing or plain bearing comprising at least one bearing ring according to the invention has proven successful, wherein the bearing ring forms an outer bearing ring and has the electrically insulating coating at least on the outer circumference or wherein the bearing ring forms an inner bearing ring and has the electrically insulating coating at least on the inner circumference.
  • the rolling bearing can be a cylindrical roller bearing, a ball bearing, a tapered roller bearing, a spherical roller bearing, a needle bearing and the like.
  • Figures 1 and 2 are intended to illustrate a bearing ring according to the invention and its manufacture by way of example.
  • Figure 1 shows a bearing ring in three-dimensional view
  • Figure 2 shows a section through the bearing ring according to Figure 1
  • Figure 3 shows an enlarged detail of Figure 2 in the area of a transition of the outer circumference to a front side of the metallic ring body
  • Figure 4 shows a rolling bearing in three-dimensional view comprising the bearing outer ring according to Figure 1
  • Figure 5 shows a plain bearing in cross-section.
  • Figure 1 shows a bearing ring 1 in the form of a bearing outer ring 3b in a three-dimensional view.
  • the bearing ring 1 has a metallic ring body 2, which has an electrically insulating coating 4 on its outer circumference and also on its adjacent end faces.
  • Figure 2 shows a section through the bearing ring 1 according to Figure 1, wherein the electrically insulating coating 4 and its arrangement on the metallic ring body 2 can be seen in detail.
  • the electrically insulating coating 4 consists of a ceramic layer 5 formed by thermal spraying, for example made of mullite, the open porosity of which is at least predominantly filled with a hardened plastic material 6.
  • Figure 3 shows an enlarged section of Figure 2 in the region of a transition from the outer circumference to an end face of the metallic ring body 2.
  • the electrically insulating coating 4 on the metallic ring body 2 has a total thickness D of 0.5 mm.
  • Figure 4 shows a rolling bearing 8 in a three-dimensional view comprising the bearing rings 1, 1' and a number of rolling elements 7 in between.
  • the bearing ring 1 corresponds to the bearing outer ring 3b according to Figure 1.
  • the same reference numerals as in Figure 1 identify the same elements.
  • the bearing ring 1' forms a bearing inner ring 3a of the rolling bearing 8.
  • Figure 5 shows a plain bearing 9 in a sectional view comprising the bearing rings 1, 1', wherein the bearing 1 forms a bearing outer ring 3b and the bearing 1' forms a bearing inner ring 3a.
  • the bearing inner ring 3a comprises a metallic ring body 2, which has an electrically insulating coating 4 on its inner diameter.
  • the electrically insulating coating 4 is formed from a ceramic layer 5 formed by thermal spraying, which is infiltrated with hardened plastic material 6.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une bague de palier (1, 1') d'un palier à roulement (8) ou d'un palier lisse (9), comprenant un corps de bague métallique (2) et une couche de céramique (5), qui est disposée au moins au niveau de la circonférence extérieure ou au moins au niveau de la circonférence intérieure du corps de bague (2) et est formée de manière à comporter des pores ouverts par pulvérisation thermique, contenant un volume de pores dans la plage de 2 % en volume à moins de 10 % en volume, un espace de pores ouverts de la couche de céramique (5) étant rempli d'une matière plastique (6) qui comprend au moins un liant polymère, au moins un diluant réactif, au moins un photoinitiateur et au moins un agent de durcissement et qu a été durcie au moins partiellement au moyen d'un rayonnement UV, la couche de céramique (5) et la matière plastique durcie (6) formant un revêtement électriquement isolant (4). L'invention concerne également un procédé de production de la bague de palier (1, 1') et un palier à roulement ou un palier lisse (8, 9) ayant une telle bague de palier (1, 1').
PCT/DE2024/100228 2023-06-07 2024-03-19 Bague de palier et procédé de production de celle-ci, et palier à roulement ou palier lisse ayant au moins une telle bague de palier Ceased WO2024251320A1 (fr)

Priority Applications (1)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01142070A (ja) * 1987-11-30 1989-06-02 Nomura Tokin:Kk 封孔された溶射層の製造方法
JPH05106014A (ja) * 1991-10-17 1993-04-27 Nippon Oil & Fats Co Ltd セラミツク溶射皮膜の封孔処理法
DE10029917A1 (de) 2000-06-17 2001-12-20 Axiva Gmbh Formkörper mit imprägnierter Schutzschicht
WO2014156205A1 (fr) * 2013-03-28 2014-10-02 トーカロ株式会社 Palier à roulement pour prévention de la corrosion électrique
WO2014174382A1 (fr) 2013-04-25 2014-10-30 Coatec Gmbh Bague de roulement, revêtement électriquement isolant et procédé de dépôt d'un revêtement électriquement isolant
DE102020131772A1 (de) * 2020-12-01 2022-06-02 Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Körperschaft des öffentlichen Rechts Lagerbauteil, Verfahren zu dessen Herstellung, sowie Wälzlager oder Gleitlager

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01142070A (ja) * 1987-11-30 1989-06-02 Nomura Tokin:Kk 封孔された溶射層の製造方法
JPH05106014A (ja) * 1991-10-17 1993-04-27 Nippon Oil & Fats Co Ltd セラミツク溶射皮膜の封孔処理法
DE10029917A1 (de) 2000-06-17 2001-12-20 Axiva Gmbh Formkörper mit imprägnierter Schutzschicht
WO2014156205A1 (fr) * 2013-03-28 2014-10-02 トーカロ株式会社 Palier à roulement pour prévention de la corrosion électrique
WO2014174382A1 (fr) 2013-04-25 2014-10-30 Coatec Gmbh Bague de roulement, revêtement électriquement isolant et procédé de dépôt d'un revêtement électriquement isolant
DE102020131772A1 (de) * 2020-12-01 2022-06-02 Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Körperschaft des öffentlichen Rechts Lagerbauteil, Verfahren zu dessen Herstellung, sowie Wälzlager oder Gleitlager

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