WO2019166041A1 - Palier hydrodynamique et pompe à rotor noyé dotée d'un tel palier lisse - Google Patents

Palier hydrodynamique et pompe à rotor noyé dotée d'un tel palier lisse Download PDF

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Publication number
WO2019166041A1
WO2019166041A1 PCT/DE2019/100006 DE2019100006W WO2019166041A1 WO 2019166041 A1 WO2019166041 A1 WO 2019166041A1 DE 2019100006 W DE2019100006 W DE 2019100006W WO 2019166041 A1 WO2019166041 A1 WO 2019166041A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
sliding bearing
coating
hydrodynamic
hydrodynamic sliding
Prior art date
Application number
PCT/DE2019/100006
Other languages
German (de)
English (en)
Inventor
Serge Kursawe
Wolfgang Scholz
Bertram Haag
Original Assignee
Schaeffler Technologies AG & 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
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2019166041A1 publication Critical patent/WO2019166041A1/fr

Links

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
    • F16C33/02—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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • F04D29/0473—Bearings hydrostatic; hydrodynamic for radial pumps
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • 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
    • F16C33/10—Construction relative to lubrication
    • F16C33/1095—Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/02—Carbon based material
    • F16C2206/04—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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/60—Coating surfaces by vapour deposition, e.g. PVD, CVD
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/44—Centrifugal pumps

Definitions

  • the invention relates to a hydrodynamic sliding bearing and a wet-running pump, in particular heating pump or water pump, with such a hydrodynamic sliding bearing.
  • slide bearings have two relatively moving parts which slide against each other against the resistance caused by sliding friction. Between the two relatively moving parts of the sliding bearing is a lubricating film that must be put under pressure to separate the contact surfaces of the two parts against the bearing force. Slide bearings are divided into hydrodynamic and hydrostatic slide bearings. In hydrostatic plain bearings, the pressure in the supporting lubricating film layer is generated by an external pump.
  • DE 10 2011 077 556 A1 discloses a sliding bearing with a rotating friction partner and a mating partner.
  • either the friction partner or the mating partner is coated with a hard material, so that the friction is reduced in the hydrodynamic state and the wear resistance in mixed friction operation is increased.
  • a pump unit is disclosed with a sliding bearing.
  • the slide bearing is either completely made of a tribologically active plastic or only the inner region forming the sliding bearing is a layer of a a tribologically active material.
  • the sliding bearing has a shaft and a bearing carrier.
  • the bearing carrier can be coated.
  • Object of the present invention is to show a rational producible hydrodynamic slide bearing with an increased life.
  • the hydrodynamic slide bearing according to the invention has two friction partners which correspond to one another, at least one friction partner having an alloy and a coating arranged thereon, the electrochemical potential of the alloy being higher than the electrochemical potential of the coating.
  • both friction partners are made of a stainless metal.
  • stainless steel having a chromium content of at least 13 mass% may be used.
  • austenitic chromium-nickel steel such as steel with the material number 1.4301 or a steel with a similar high chromium content (17.5 to 19.5 mass%), comes into consideration.
  • the layer thickness of the coating is preferably between 3 pm and 20 pm, in particular between 5 pm and 10 pm.
  • the layer thickness of the coating is 7 pm.
  • the coating contains, for example, carbon layers, in particular amorphous carbon layers or CVD diamond layers.
  • CVD stands for Chemical Vapor Deposition.
  • Amorphous carbon is often also called diamond-like carbon (DLC) or diamond-like termed carbon.
  • the coating can be produced, for example, by the process which has already been disclosed in DE 10 2016 210 507 A1 by the applicant.
  • the coating contains a lubricating varnish. Regardless of whether the coating has bonded coating or carbon coatings, the coating can be made in one or more layers.
  • the coated friction partner is designed as a bearing bush.
  • the other friction partner is a shaft.
  • the bearing bush is preferably designed as a formed part.
  • the bearing bush is coated on the surface facing the other friction partner and on one end face.
  • the one friction partner preferably the bearing bush, is completely coated.
  • the wet-running pump according to the invention in particular heating pump or water pump, is characterized in that it has a hydrodynamic sliding bearing as described above.
  • the lubricating film of the hydrodynamic plain bearing corresponds to the medium that is conveyed through the wet-running pump.
  • Figure 2 shows an exemplary layer structure of the coated friction partner of a hydrodynamic sliding bearing according to the invention.
  • identical or equivalent parts are given the same reference numerals.
  • FIG. 1 shows an exemplary embodiment of a hydro-dynamic sliding bearing 1 according to the invention in a sectional view.
  • the hydrodynamic sliding bearing 1 is integrated here in a wet runner pump 2, not shown.
  • the hydrodynamic sliding bearing 1 has two mutually corresponding friction partners 3, 4.
  • the first friction partner 3 is designed as a bearing bush, while the second friction partner 4 represents a shaft.
  • Both friction partners 3, 4 of the hydrodynamic sliding bearing 1 are here made of a stainless steel.
  • the bearing bush 3 is formed here as a forming part and has a cylindrical shape with a formed on an end face of the bearing bush 3 flange 5.
  • the flange-side end face of the bearing bush 3 represents an axial thrust surface 6 for parts of the wet-running pump 2 in order to transmit axial forces.
  • the bearing bush 3 is completely alloyed. Furthermore, the bearing bush 3 of the hydrodynamic sliding bearing 1 is coated on the surface 7 facing the shaft 4 and on the axial abutment surface 6.
  • the coating 8 consists in this embodiment of amorphous carbon layers.
  • the coated friction partner 3 is here the bearing bush of the hydrodynamic sliding bearing 1.
  • the bearing bush 3 is made of a stainless steel and has an alloy layer 9.
  • a coating 8 is applied, which has a layer thickness D of 7 pm.
  • the alloy 9 in this case has a higher electrochemical potential than the coating 8, whereby pitting corrosion is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

L'invention concerne un palier hydrodynamique (1) présentant deux antagonistes (3,4) correspondant l'un à l'autre, au moins un antagoniste (3) présentant un alliage (9) et un revêtement (8) appliqué dessus, le potentiel électrochimique de l'alliage (9) étant supérieur au potentiel électrochimique du revêtement (8).
PCT/DE2019/100006 2018-02-28 2019-01-07 Palier hydrodynamique et pompe à rotor noyé dotée d'un tel palier lisse WO2019166041A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018104541.7A DE102018104541A1 (de) 2018-02-28 2018-02-28 Hydrodynamisches Gleitlager sowie Nassläuferpumpe mit einem solchen Gleitlager
DE102018104541.7 2018-02-28

Publications (1)

Publication Number Publication Date
WO2019166041A1 true WO2019166041A1 (fr) 2019-09-06

Family

ID=65228291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2019/100006 WO2019166041A1 (fr) 2018-02-28 2019-01-07 Palier hydrodynamique et pompe à rotor noyé dotée d'un tel palier lisse

Country Status (2)

Country Link
DE (1) DE102018104541A1 (fr)
WO (1) WO2019166041A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020003140A1 (de) 2020-05-26 2021-12-02 KSB SE & Co. KGaA Kreiselpumpe mit mindestens einer hydrodynamischen Gleitlageranordnung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003343481A (ja) * 2002-05-22 2003-12-03 Koyo Seiko Co Ltd ポンプ
US20090052822A1 (en) * 2007-08-24 2009-02-26 Ggb, Inc. Metal-Backed Plain Bearing
EP2103711A1 (fr) * 2006-12-28 2009-09-23 JTEKT Corporation Eléments très résistants à la corrosion et leurs procédés de production
DE102011077556A1 (de) 2011-06-15 2012-12-20 Schaeffler Technologies AG & Co. KG Gleitlager
DE102013004339A1 (de) 2013-03-14 2014-09-18 Wilo Se Pumpenaggregat mit einer einstückigen Lagereinheit
US20170058616A1 (en) * 2015-08-26 2017-03-02 Summit Esp, Llc Abrasion resistance in well fluid wetted assemblies
DE102016210507A1 (de) 2016-06-14 2017-12-14 Schaeffler Technologies AG & Co. KG Verfahren zur Herstellung einer Gleitfläche an einem Maschinenelement sowie Maschinenelement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407532B (de) * 1998-07-29 2001-04-25 Miba Gleitlager Ag Verbundwerkstoff aus zumindest zwei schichten
AT503735B1 (de) * 2006-06-09 2008-05-15 Miba Gleitlager Gmbh Mehrschichtlager

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003343481A (ja) * 2002-05-22 2003-12-03 Koyo Seiko Co Ltd ポンプ
EP2103711A1 (fr) * 2006-12-28 2009-09-23 JTEKT Corporation Eléments très résistants à la corrosion et leurs procédés de production
US20090052822A1 (en) * 2007-08-24 2009-02-26 Ggb, Inc. Metal-Backed Plain Bearing
DE102011077556A1 (de) 2011-06-15 2012-12-20 Schaeffler Technologies AG & Co. KG Gleitlager
DE102013004339A1 (de) 2013-03-14 2014-09-18 Wilo Se Pumpenaggregat mit einer einstückigen Lagereinheit
US20170058616A1 (en) * 2015-08-26 2017-03-02 Summit Esp, Llc Abrasion resistance in well fluid wetted assemblies
DE102016210507A1 (de) 2016-06-14 2017-12-14 Schaeffler Technologies AG & Co. KG Verfahren zur Herstellung einer Gleitfläche an einem Maschinenelement sowie Maschinenelement

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Publication number Publication date
DE102018104541A1 (de) 2019-08-29

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