GB2270720A - Manufacturing plain bearings. - Google Patents

Manufacturing plain bearings. Download PDF

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Publication number
GB2270720A
GB2270720A GB9219800A GB9219800A GB2270720A GB 2270720 A GB2270720 A GB 2270720A GB 9219800 A GB9219800 A GB 9219800A GB 9219800 A GB9219800 A GB 9219800A GB 2270720 A GB2270720 A GB 2270720A
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GB
United Kingdom
Prior art keywords
tape
backing sheet
sheet
bearing surface
bearing
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.)
Granted
Application number
GB9219800A
Other versions
GB2270720B (en
GB9219800D0 (en
Inventor
Glyndwr John Davies
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
T&N 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 T&N Technology Ltd filed Critical T&N Technology Ltd
Priority to GB9219800A priority Critical patent/GB2270720B/en
Publication of GB9219800D0 publication Critical patent/GB9219800D0/en
Publication of GB2270720A publication Critical patent/GB2270720A/en
Application granted granted Critical
Publication of GB2270720B publication Critical patent/GB2270720B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/201—Composition of the plastic
    • 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
    • F16C33/28—Brasses; Bushes; Linings with embedded reinforcements shaped as frames or meshed materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/906—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using roller calibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/12—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/16—Tin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/12—Polyvinylhalogenides containing fluorine
    • B32B2327/18—PTFE, i.e. polytetrafluoroethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/48—Shaping by deformation without removing material by extrusion, e.g. of metallic profiles
    • 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
    • F16C2223/32—Coating surfaces by attaching pre-existing layers, e.g. resin sheets or foils by adhesion to a substrate; Laminating

Abstract

A Plain bearing material 36 is manufactured by extruding a tape 16 of thermoplastic bearing surface material, and positioning the tape 16 on the surface of a backing sheet 20. The backing sheet 20 is a single layer of metal with discrete holes 24 therethrough. Heat and pressure is applied so that the material of the tape 16 adjacent to the backing sheet 20 is softened and forced into the holes 24 thereby bonding the tape 16 to the sheet 20. Unsoftened parts of the tape (16) provide a bearing surface 38. The bearing surface material may be applied to one or both sides of the backing sheet 20. The surface material may comprise PTFE, bronze, graphite, and polyvinylidene fluoride. <IMAGE>

Description

MANUFACTURING PLAIN BEARING MATERIALS This invention is concerned with a method of manufacturing a plain bearing.
Many bearing materials have a surface layer which incorporates a significant proportion of plastics material which has good tribological properties. An example of such a material is polytetrafluoroethylene (PTFE). Typically such a bearing material comprises a backing sheet, e.g. of steel, a layer of sintered metallic material, e.g. of bronze, and a low-friction layer containing PTFE which is forced into the interstices of the sintered material to bond the low-friction layer to the remainder of the bearing. US Patent Specification No. 2,689,380 may be referred to for further details. This type of bearing is formed by preparing a dispersion of PTFE, a filler, e.g.
lead powder, and a high proportion of toluene. This produces a wet "mush" which is spread over the sintered layer before heat and pressure is applied to drive off the toluene and force the PTFE and filler into the interstices.
This method suffers from the disadvantages that the mush is extremely shear-sensitive in that the PTFE may fibrillate making the mush stiff and unusable as it cannot penetrate the interstices. This means that the mush has to be applied very carefully be hand in a time-consuming and expensive operation.
It is an object of the present invention to provide a method of manufacturing a plain bearing having a surface layer which incorporates a significant proportion of plastics material which avoids the use of the aforementioned mush.
The invention provides a method of manufacturing a plain bearing comprising extruding a self-supporting tape of thermoplastic bearing surface material, positioning the tape on one surface of a backing sheet, the backing sheet being a single layer of metal with discrete holes therethrough, the holes being distributed over the area of the sheet, and applying heat and pressure so that the material of the tape adjacent to said backing sheet softens and is forced into said apertures thereby bonding the tape to the backing sheet, unsoftened parts of the tape providing a bearing surface.
A method according to the invention avoids the use of a mush as the bearing surface material is self-supporting and can readily be handled by machinery. The surface of the tape away from the backing sheet can be made smooth in the extrusion process and, as it is not disturbed during application of the tape to the backing sheet provides a high quality surface. The method also avoids the use of a sintered layer on a backing layer. As the backing sheet is a single layer of metal with discrete hdles therethrough, this gives the advantage that the bearing is thin. The apertures may have sharp projecting edges which assist the bonding. Such apertures may be formed by a punching operation. The material of the tape may be pressed right through the backing sheet and form a further bearing surface on the opposite side thereof.Alternatively, a further self-supporting tape of the thermoplastic bearing surface material is extruded, this further tape is positioned on an opposite surface of the backing sheet, and the application of heat and pressure causes the tapes to fuse together through said holes. This enables the bearing to be used for applications requiring bearing surfaces on both sides of the bearing.
The backing sheet may be flexible enabling the bearing to be formed into a cylindrical bush, e.g. suitable for use in a door hinge. Where the bearing has bearing surfaces on each side thereof, such a bush can be used to electrically insulate two relatively-movable parts from one another.
The backing sheet may be an expanded metal sheet, i.e.
a metal sheet which has had a pattern of slits cut therein and then stretched so that the slits open out into diamondshaped apertures giving the sheet a mesh-like appearance.
In order to heat the tape where required, the heat may be applied thereto by inductance so that the backing sheet is heated.
A suitable material for the bearing surface comprises, in percentages by weight, 5 to 30 of PTFE, 5 to 60 bronze, 1 to 20 graphite, with the balance being polyvinylidene fluoride. This material can readily be extruded as a selfsupporting tape and has good tribological properties. This material is disclosed and claimed in GB Patent Specification No. 2,238,548 A. A preferred composition comprises, in weight percentages, 15 to 30 PTFE, 15 to 35 bronze, 3 to 12 graphite, and the balance polyvinylidene fluoride (PVDF). A particularly preferred composition comprises, in weight percentages, 20 to 27 PTFE, 15 to 25 bronze, 4 to 9 graphite, and the balance PVDF.
There now follows a detailed description to be read with reference to the accompanying drawings, of a method of manufacturing a plain bearing which is illustrative of the invention.
In the drawings: Figure 1 is a diagrammatic perspective view of an apparatus used in carrying out the illustrative method; and Figure 2 is a cross-sectional view taken through a piece of bearing material made by the illustrative method.
The apparatus shown in Figure 1 comprises a conventional extruder 10 of the twin screw-type. The extruder 10 has a rectangular extrusion orifice 14 so that it extrudes a tape 16.
The apparatus also comprises a further extruder lOa operable to extrude a tape 16a through a rectangular orifice 14a.
The apparatus also comprises a pair of driven rollers (not shown) operable to draw flexible expanded metal backing sheet 20 off a reel (not shown). The sheet 20 is made of steel and has discrete diamond-shaped holes 24 through the sheet 20, the holes 24 being distributed over the area of the sheet 20.
The apparatus also comprises guide rollers 26 for guiding the tapes 16 and 16a and the sheet 20 to the nip between two pressing rollers 28 of the apparatus arranged to press the tapes 16 and 16a against the sheet 20 under light pressure.
The apparatus also comprises an induction heater 30 arranged to heat the "sandwich" of tapes 16 and 16a and sheet 20 as it leaves the rollers 28 and proceeds to pressing rollers 32 before being collected on a reel (not shown).
In the illustrative method, a plain bearing 36 is manufactured by extruding the tapes 16 and 16a from the extruders 12 and 12a, using the rollers 28 to position the tape 16 on one surface of the sheet 20 and the tape 16a on the opposite surface of the sheet 20, applying heat by means of the heater 30 which heats the sheet 20 from which heat is conducted to the adjacent portions of the tapes 16 and 16a softening said portions, and applying pressure by means of the rollers 32 so that the softened material of the tapes 16 and 16a is forced into the holes 24 thereby bonding the tapes 16 and 16a to the sheet 20. The softened material of the tapes 16 and 16a meets in holes 24 and fuses together. Unsoftened parts of the tapes 16 and 16a provide bearing surface 38 and 38a of the bearing 36.
The material used for the tapes 16 and 16a had a composition, in percentages by weight of, 24 PTFE, 20 bronze, 6 graphite, 50 PVDF (the method of compounding is described in GB Patent Specification No. 2,238,548A).
The material made by the illustrative method is particularly suitable for use as a bush for a door hinge.
Such bushes have to have a central bore with a tight tolerance which can be achieved by bore burnishing, i.e.
forcing a tool through the bore to expand it to the required dimension. If this is attempted with a bearing material having a rigid backing sheet, the bearing surface may be stripped off but an expanded sheet stretches instead.

Claims (8)

  1. CLAINS
    1A method of manufacturing a plain bearing comprising extruding a self-supporting tape of thermoplastic bearing surface material, positioning the tape on one surface of a backing sheet, the backing sheet being a single layer of metal with discrete holes therethrough, on holes being distributed over the area of the sheet, and applying heat and pressure so that the material of the tape adjacent to said backing sheet softens and is forced into said apertures thereby bonding the tape to the backing sheet, unsoftened parts of the tape providing a bearing surface.
  2. 2 A method according to Claim 1, wherein the material of the tape is pressed right through the backing sheet and forms a further bearing surface.
  3. 3 A method according to Claim 1, wherein a further self supporting tape of the thermoplastic bearing surface material is extruded, this further tape is positioned on an opposite surface of the backing sheet, and the application of heat and pressure causes the tapes to fuse together through said holes.
  4. 4 A method according to any one of Claims 1 to 3, wherein the backing sheet is flexible.
  5. 5 A method according to any one of Claims 1 to 4, wherein the backing sheet is an expanded metal sheet.
  6. 6 A method according to any one of Claims 1 to 5, wherein said heat is applied by inductance, so that the backing sheet is heated.
  7. 7 A method according to any one of Claims 1 to 6, wherein the bearing surface material comprises, in percentages by weight, 5 to 30 PTFE, 5 to 60 bronze,
    1 to 20 graphite, with the balance being polyvinylidene fluoride.
  8. 8 A method of manufacturing a plain bearing substantially as hereinbefore described with reference to the accompanying drawings.
GB9219800A 1992-09-17 1992-09-17 Manufacturing plain bearing materials Expired - Fee Related GB2270720B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9219800A GB2270720B (en) 1992-09-17 1992-09-17 Manufacturing plain bearing materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9219800A GB2270720B (en) 1992-09-17 1992-09-17 Manufacturing plain bearing materials

Publications (3)

Publication Number Publication Date
GB9219800D0 GB9219800D0 (en) 1992-10-28
GB2270720A true GB2270720A (en) 1994-03-23
GB2270720B GB2270720B (en) 1996-01-10

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311072A (en) * 1996-03-13 1997-09-17 Flexitallic Sealing Materials PTFE sealing material
EP0802338A2 (en) * 1996-04-20 1997-10-22 Wieland-Werke AG Method of manufacturing rolled metal plastic bearing sleeves
DE29702457U1 (en) * 1997-02-13 1998-06-18 Corts Jochen Plain bearings, in particular for storing a hatch cover on a ship
GB2333811A (en) * 1998-01-29 1999-08-04 Silvertown U K Limited Fluid lubricated bearing
GB2357813A (en) * 1999-12-08 2001-07-04 Renk Ag Sliding bearing
EP1348223A1 (en) * 2000-12-06 2003-10-01 Energy Storage Systems Pty, Ltd An energy storage device
US8979376B2 (en) 2007-04-04 2015-03-17 Saint-Gobain Performance Plastics Pampus Gmbh Spherical plain bearing
US9022656B2 (en) 2008-09-30 2015-05-05 Saint-Gobain Performance Plastics Pampus Gmbh Vibration-damping plain bearing composite and plain bearing bushing and plain bearing assembly
EP2910805A1 (en) * 2014-02-19 2015-08-26 Hühoco Metalloberflächenveredelung GmbH Hybrid metal/plastic composite for a sliding bearing and method for its preparation
WO2017114952A1 (en) * 2015-12-31 2017-07-06 Saint-Gobain Performance Plastics Pampus Gmbh Corrosion resistant bushing including metal mesh
CN110091486A (en) * 2019-06-03 2019-08-06 浙江松华新材股份有限公司 A kind of processing method that induction heating squeezes out polytetrafluoroethylsteel steel bar

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520409A (en) * 1975-06-27 1978-08-09 Timmermans F D Bearings
GB1596279A (en) * 1976-12-06 1981-08-26 Nat Res Dev Bearing materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520409A (en) * 1975-06-27 1978-08-09 Timmermans F D Bearings
GB1596279A (en) * 1976-12-06 1981-08-26 Nat Res Dev Bearing materials

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311072A (en) * 1996-03-13 1997-09-17 Flexitallic Sealing Materials PTFE sealing material
EP0802338A2 (en) * 1996-04-20 1997-10-22 Wieland-Werke AG Method of manufacturing rolled metal plastic bearing sleeves
EP0802338A3 (en) * 1996-04-20 1998-09-02 Wieland-Werke AG Method of manufacturing rolled metal plastic bearing sleeves
DE29702457U1 (en) * 1997-02-13 1998-06-18 Corts Jochen Plain bearings, in particular for storing a hatch cover on a ship
GB2333811A (en) * 1998-01-29 1999-08-04 Silvertown U K Limited Fluid lubricated bearing
GB2357813A (en) * 1999-12-08 2001-07-04 Renk Ag Sliding bearing
EP1348223A1 (en) * 2000-12-06 2003-10-01 Energy Storage Systems Pty, Ltd An energy storage device
EP1348223B1 (en) * 2000-12-06 2013-03-20 CAP-XX Limited Combination of sheets and method for forming an energy storage device
US8979376B2 (en) 2007-04-04 2015-03-17 Saint-Gobain Performance Plastics Pampus Gmbh Spherical plain bearing
US9022656B2 (en) 2008-09-30 2015-05-05 Saint-Gobain Performance Plastics Pampus Gmbh Vibration-damping plain bearing composite and plain bearing bushing and plain bearing assembly
EP2910805A1 (en) * 2014-02-19 2015-08-26 Hühoco Metalloberflächenveredelung GmbH Hybrid metal/plastic composite for a sliding bearing and method for its preparation
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CN110091486A (en) * 2019-06-03 2019-08-06 浙江松华新材股份有限公司 A kind of processing method that induction heating squeezes out polytetrafluoroethylsteel steel bar

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GB2270720B (en) 1996-01-10
GB9219800D0 (en) 1992-10-28

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