GB923642A - Improvements in or relating to plain bearings, anti-friction elements or the like - Google Patents

Improvements in or relating to plain bearings, anti-friction elements or the like

Info

Publication number
GB923642A
GB923642A GB1903458A GB1903458A GB923642A GB 923642 A GB923642 A GB 923642A GB 1903458 A GB1903458 A GB 1903458A GB 1903458 A GB1903458 A GB 1903458A GB 923642 A GB923642 A GB 923642A
Authority
GB
United Kingdom
Prior art keywords
potassium
nitrate
matrix
compound
mesh
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.)
Expired
Application number
GB1903458A
Inventor
Victor Thomson Morgan
Brian Sleight
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.)
BOUND BROOK BEARINGS Ltd
Original Assignee
BOUND BROOK BEARINGS 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 BOUND BROOK BEARINGS Ltd filed Critical BOUND BROOK BEARINGS Ltd
Priority to GB1903458A priority Critical patent/GB923642A/en
Publication of GB923642A publication Critical patent/GB923642A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Powder Metallurgy (AREA)

Abstract

A plain bearing, e.g. a journal or thrust bearing or a slideway, comprises a metal matrix containing P.T.F.E. and a chemical compound which has, or which forms, with the metal or steel, a compound which has, a critical shear stress less than one-third of that of the matrix material at least at some point in the operating range. The compound for a 90:10 tin-bronze matrix may be potassium iodide, bromide or chloride. The compound may also be a salt with a base of ammonium, potassium, sodium, and lithium or may ionise in solutions or may have an ionic structure. It may be a halide, nitrate, nitrite, nitride, sulphate, sulphide, sulphite, carbonate, phosphate or acetate. The acetates or carbonates may react to give lamellar oxides. Potassium iodide will give iron iodide with a steel shaft and potassium carbonate will give iron oxide. Potassium bromide will give copper bromide with a bronze matrix. Sodium acetate, potassium nitrate or carbonate and lead chloride may be used with a bronze matrix. In an example 200 gms. of a 15% by wt. dispersion of P.T.F.E. in toluene and water with 1 gm. aluminium nitrate crystals is used to make a paste and 14,3 gms. of potassium iodide of 325 mesh are added. The matrix is then impregnated with the paste by heat and pressure. The disc is dried and the P.T.F.E. is sintered in nitrogen at 340 DEG C. A journal is made from 9:1 by wt. mixture of 100 mesh copper and 325 mesh tin and is sintered; P.T.F.E. and potassium nitrate are then incorporated by a vacuum process. A surface overlay of the P.T.F.E. and nitrate is then sprayed on and the bearing heated in nitrogen at 340 DEG C.ALSO:A plain bearing, e.g. a journal or thrust bearing or a slideway, comprises a metal matrix containing P.T.F.E. and a chemical compound which has, or which forms, with the metal or steel, a compound which has, a critical shear stress less than one-third of that of the matrix material at least at some point in the operating range. The compound for a 90 : 10 tin-bronze matrix may be potassium iodide, bromide or chloride. The compound may also be a salt with a base of ammonium, potassium, sodium and lithium or may ionize in solutions or may have an ionic structure. It may be a halide, nitrate, nitrite, nitride, sulphate, sulphide, sulphite, carbonate, phosphate or acetate. The acetates or carbonates may react to give lamellar oxides. Potassium iodide will give iron iodide with a steel shaft and potassium carbonate will give iron oxide. Potassium bromide will give copper bromide with a bronze matrix. Sodium acetate, potassium nitrate or carbonate and lead chloride may be used with a bronze matrix. To make a thrust plate, a steel disc is copper plated by electrolysis and a bronze powder of -100, +150 B.S. mesh is sintered thereon in a reducing atmosphere. 200 gms. of a 15% by wt. dispersion of P.T.F.E. in toluene and water with 1 gm. aluminium nitrate crystals is used to make a paste and 14.3 gms. of potassium iodide of 325 mesh are added. The matrix is then impregnated with the paste by heat and pressure. The disc is dried and the P.T.F.E. is sintered in nitrogen at 340 DEG C. A journal is made from 9 : 1 by wt. mixture of 100 mesh copper and 325 mesh tin and is sintered P.T.F.E. and potassium nitrate are then incorporated by a vacuum process. A surface overlay of the P.T.F.E. and nitrate is then sprayed on and the bearing heated in nitrogen at 340 DEG C.
GB1903458A 1958-06-13 1958-06-13 Improvements in or relating to plain bearings, anti-friction elements or the like Expired GB923642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1903458A GB923642A (en) 1958-06-13 1958-06-13 Improvements in or relating to plain bearings, anti-friction elements or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1903458A GB923642A (en) 1958-06-13 1958-06-13 Improvements in or relating to plain bearings, anti-friction elements or the like

Publications (1)

Publication Number Publication Date
GB923642A true GB923642A (en) 1963-04-18

Family

ID=10122646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1903458A Expired GB923642A (en) 1958-06-13 1958-06-13 Improvements in or relating to plain bearings, anti-friction elements or the like

Country Status (1)

Country Link
GB (1) GB923642A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126251A (en) * 1982-09-14 1984-03-21 Worcester Controls Corp Sintered plastic impregnated metal body
EP0852298A1 (en) * 1996-12-14 1998-07-08 Glacier Gmbh - Deva Werke Method for manufacturing a material for plain bearings
WO2003013767A1 (en) * 2001-08-03 2003-02-20 Federal-Mogul Deva Gmbh Solid-material bearing and a method for producing the same
CN100448571C (en) * 2006-12-29 2009-01-07 北京科技大学 CuSn10 alloy injection forming method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126251A (en) * 1982-09-14 1984-03-21 Worcester Controls Corp Sintered plastic impregnated metal body
EP0852298A1 (en) * 1996-12-14 1998-07-08 Glacier Gmbh - Deva Werke Method for manufacturing a material for plain bearings
US6042778A (en) * 1996-12-14 2000-03-28 Federal-Mogul Deva Gmbh Sliding bearing and method of making a sliding bearing material
WO2003013767A1 (en) * 2001-08-03 2003-02-20 Federal-Mogul Deva Gmbh Solid-material bearing and a method for producing the same
CN100448571C (en) * 2006-12-29 2009-01-07 北京科技大学 CuSn10 alloy injection forming method

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