GB2352483A - Manufacture of plain bearings - Google Patents

Manufacture of plain bearings Download PDF

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Publication number
GB2352483A
GB2352483A GB9917602A GB9917602A GB2352483A GB 2352483 A GB2352483 A GB 2352483A GB 9917602 A GB9917602 A GB 9917602A GB 9917602 A GB9917602 A GB 9917602A GB 2352483 A GB2352483 A GB 2352483A
Authority
GB
United Kingdom
Prior art keywords
dispersion
resin
solid lubricant
bearing
weight
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Withdrawn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
GB9917602A
Other versions
GB9917602D0 (en
Inventor
Geraldine Elisabeth Mulet
Udo Roos
Hubert Schwazre
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.)
Federal Mogul Technology Ltd
Original Assignee
Federal Mogul Technology Ltd
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 Federal Mogul Technology Ltd filed Critical Federal Mogul Technology Ltd
Priority to GB9917602A priority Critical patent/GB2352483A/en
Publication of GB9917602D0 publication Critical patent/GB9917602D0/en
Publication of GB2352483A publication Critical patent/GB2352483A/en
Withdrawn legal-status Critical Current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
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/201—Composition of the plastic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C10M103/02—Carbon; Graphite
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C10M103/06—Metal compounds
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
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    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/047—Siloxanes with specific structure containing alkylene oxide groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/047—Siloxanes with specific structure containing alkylene oxide groups
    • C10M2229/0475—Siloxanes with specific structure containing alkylene oxide groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/048—Siloxanes with specific structure containing carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/048—Siloxanes with specific structure containing carboxyl groups
    • C10M2229/0485—Siloxanes with specific structure containing carboxyl groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/0505—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/051—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen
    • C10M2229/0515—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/052—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen
    • C10M2229/0525—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/053—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur
    • C10M2229/0535—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
    • C10M2229/0545—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/02—Bearings

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A method of manufacturing a plain bearing comprises forming a dispersion comprising a silicon resin, particles of solid lubricant and a hydrolysis-promoting catalyst. The resin forms 30 to 80% by weight of the solids content of the dispersion. The method also comprises spreading the dispersion on to a supporting substrate, drying the dispersion, and curing the resin.

Description

2352483 1 MANUFACTURE OF PLAIN BEARINGS This invention is concerned with
the manufacture of plain bearings and is applicable to plain bearings used for high load, intermittent, oscillating, reciprocating and sliding movements in conditions where provision of conventional lubrication would be difficult or unreliable. Bearings of this type are used as cylindrical bushes with a low-friction bearing surface, either on the internal surface of the bush, the external surface thereof, or both the internal and external surfaces thereof. Such bushes may have flanges which are provided with a low-friction bearing surface. Bearings of this type are also used as half bearings arranged, eg, on opposite sides of a shaft, as thrust washers, as flat components, as axial and radial segments, and as spherical bearings.
A conventional plain bearing of the type referred to above comprises a rigid supporting substrate and a bearing material which forms the lowfriction surface or surfaces. In some cases, the substrate comprises a layer of sintered metal (eg bronze) formed on a sheet (eg formed of steel) and the bearing material is bonded to the substrate by infiltration of the interstices of the sintered layer. In other cases, the substrate has numerous small pockets formed in the surface thereof and the bearing material spreads over the surfaces and fills these pockets. The material in the pockets "keys" the bearing material to the supporting substrate.
The bearing materials referred to above as forming the low-friction bearing surfaces comprise solid lubricant particles, distributed in a matrix formed from a polymer such as PTFE, PEEK and/or POM. However, these polymers require the use organic solvents in the manufacturing process which is undesirable for environmental reasons. These polymers also require high 2 temperatures for curing. It is an object of the present invention to provide a method of manufacturing a plain bearing in which these disadvantages are avoided.
The invention provides a method of manufacturing a plain bearing comprising forming an aqueous dispersion comprising a silicon resin, particles of solid lubricant and a hydrolysis-promoting catalyst, the resin forming 30 to 80% by weight of the solids content of the dispersion, the method also comprising spreading the dispersion on to a supporting substrate, drying the dispersion. and curing the resin.
A method according to the invention avoids the use of organic solvents and, in many cases, the resin can be cured at room temperature. The resin reacts under hydrolysis and condensation to form a highly cross-linked matrix.
Preferably, the solid lubricant is selected from PTFE, graphite and molybdenum disulphide. Good results are obtained when both PTFE and graphite are used together. The particle sizes are preferably between 15pm to 45pm. PTFE may form 5 to 60% by weight of the solids content of the dispersion. Graphite may form 2 to 50 by weight of said solids content.
The catalyst may form 1 to 10% be weight of the solids content of the dispersion. The catalyst may be a suitable compound of tin, zinc, titanium or zirconium.
The invention also provides a plain bearing comprising a supporting substrate and a low-friction bearing surface formed from a bearing material having a matrix formed from silicon resin, the resin forming 30 to 80% by weight of the material, the material also comprising particles of a solid lubricant distributed in the matrix 3 Example A plain bearing comprising a supporting substrate and a bearing layer mounted on said substrate was manufactured by first forming a dispersion in which were mixed a silicone resin (Silres MSE 100 from Walker - polymethyl siloxane, methoxyfunctional resin (alkylsilicone resin with a alkoxy-group) and including a curing agent. The resin formed 66.6% by weight of the solids content of the dispersion; solid lubricant particles formed from PTFE (mean particle size 20 microns). These particles formed 20% by weight of the solids content of the dispersion; solid lubricant particles formed from graphite (mean particle size 36 microns). These particles formed 10% by weight of the solids content of the dispersion; and a hydrolysispromoting catalyst (polybutyl titanate). The catalyst formed 3.3% by weight of the solids content of the dispersion.
The dispersion had a solids content of 99%.
The dispersion was spread by means of a K bar (spraying represents an alternative method of spreading) on to the supporting substrate which was in the form of a steel strip having a layer of sintered bronze thereon. The dispersion infiltrated the layer of sintered bronze and formed a layer approximately 0,3 to 1 mm in thickness over the layer of sintered bronze. The dispersion was then dried so that a substantially dry layer was left on the substrate. The bearing was then left for the resin to cure which occurred at room temperature.
The finished bearing was formed into cylindrical bushes and compared with conventional bushes used for high load, intermittent, oscillating, reciprocating and sliding movements. The bearings were found to have acceptable wear characteristics and a lower coefficient of friction.
4

Claims (1)

1 A method of manufacturing a plain bearing comprising forming a dispersion comprising a silicon resin, particles of solid lubricant and a hydrolysis-promoting catalyst, the resin forming 30 to 80% by weight of the solids content of the dispersion, the method also comprising spreading the dispersion on to a supporting substrate, drying the dispersion. and curing the resin. 2 A method according to claim 1, wherein the solid lubricant is selected from PTFE, graphite and molybdenum disulphicle. 3 A method according to either one of claims 1 and 2, wherein the solid lubricant comprises both PTFE and graphite. 4 A method according to any one of claims 1 to 3, wherein the solid lubricant has a particle size between 15prn to 45pm. 5 A method of manufacturing a plain bearing substantially as hereinbefore described with reference to the example. 6 A plain bearing comprising a supporting substrate and a low-friction bearing surface formed from a bearing material having a matrix formed from silicon resin, the resin forming 30 to 80% by weight of the material, the material also comprising particles of a solid lubricant distributed in the matrix.
GB9917602A 1999-07-28 1999-07-28 Manufacture of plain bearings Withdrawn GB2352483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9917602A GB2352483A (en) 1999-07-28 1999-07-28 Manufacture of plain bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9917602A GB2352483A (en) 1999-07-28 1999-07-28 Manufacture of plain bearings

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GB2352483A true GB2352483A (en) 2001-01-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005087958A1 (en) * 2004-03-11 2005-09-22 Federal-Mogul Deva Gmbh Sintered plain bearing material, plain bearing composite material and uses thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693533A (en) * 1979-12-28 1981-07-29 Toshiba Ceramics Co Ltd Manufacture of sliding member

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693533A (en) * 1979-12-28 1981-07-29 Toshiba Ceramics Co Ltd Manufacture of sliding member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005087958A1 (en) * 2004-03-11 2005-09-22 Federal-Mogul Deva Gmbh Sintered plain bearing material, plain bearing composite material and uses thereof

Also Published As

Publication number Publication date
GB9917602D0 (en) 1999-09-29

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