GB784165A - Improvements relating to oil-impregnated porous bearings - Google Patents

Improvements relating to oil-impregnated porous bearings

Info

Publication number
GB784165A
GB784165A GB5690/55A GB569055A GB784165A GB 784165 A GB784165 A GB 784165A GB 5690/55 A GB5690/55 A GB 5690/55A GB 569055 A GB569055 A GB 569055A GB 784165 A GB784165 A GB 784165A
Authority
GB
United Kingdom
Prior art keywords
oil
vacuum
bearing
mould
powdered
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
GB5690/55A
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 Oil Less Bearing Co
Original Assignee
Bound Brook Oil Less Bearing Co
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 Oil Less Bearing Co filed Critical Bound Brook Oil Less Bearing Co
Publication of GB784165A publication Critical patent/GB784165A/en
Expired legal-status Critical Current

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
    • F16C33/14—Special methods of manufacture; Running-in
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F3/26—Impregnating
    • 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
    • F16C2220/20—Shaping by sintering pulverised material, e.g. powder metallurgy
    • 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
    • F16C2223/02—Mechanical treatment, e.g. finishing
    • F16C2223/04—Mechanical treatment, e.g. finishing by sizing, by shaping to final size by small plastic deformation, e.g. by calibrating or coining
    • 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
    • F16C2223/40—Coating surfaces by dipping in molten material

Landscapes

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

Abstract

An oil-impregnated porous metal part adapted for use in a bearing is made by sintering the part, dipping it for not more than 5 seconds in an oil suspension of molybdenum sulphide, sizing it, subjecting it to vacuum, applying oil to it and then releasing the vacuum. A molybdenum sulphide coating is thus welded to the surface, and at least part of the surface pores are left open. As applied to the production of a porous bronze bearing a mixture of powdered copper, tin and graphite is compacted in a mould having the shape of the desired part, but somewhat oversize. The part is sintered at 1500 DEG F. for 30 minutes, and is then dipped for not more than 5 seconds in a 4 per cent suspension in oil, preferably warmed to 150 DEG F. of pulverized purified natural molybdenite having a particle size of up to 70 microns. It is next sized by placing it in a mould and compressing it to fit the mould by a core-piece or pin which moves relatively to the working surface of the bearing, thus firmly uniting the layer of molybdenum sulphide to the underlying metal. The bearing is finally subjected to vacuum in an autoclave, after which oil is introduced to cover the parts and the vacuum is released. Other materials such as iron-copper mixtures, powdered iron and powdered brass may be similarly treated.
GB5690/55A 1954-03-09 1955-02-25 Improvements relating to oil-impregnated porous bearings Expired GB784165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US784165XA 1954-03-09 1954-03-09

Publications (1)

Publication Number Publication Date
GB784165A true GB784165A (en) 1957-10-02

Family

ID=22143887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5690/55A Expired GB784165A (en) 1954-03-09 1955-02-25 Improvements relating to oil-impregnated porous bearings

Country Status (1)

Country Link
GB (1) GB784165A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133477A (en) * 1960-12-03 1964-05-19 Philips Corp Self lubricating piston
US3143771A (en) * 1962-03-12 1964-08-11 Kluttz Machine & Foundry Co Textile card flat chains
US3261224A (en) * 1964-01-27 1966-07-19 Specialties Dev Corp Nut for ball screw and nut assembly
EP0191173A1 (en) * 1985-02-13 1986-08-20 International Business Machines Corporation Vacuum impregnation of sintered materials with dry lubricant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133477A (en) * 1960-12-03 1964-05-19 Philips Corp Self lubricating piston
US3143771A (en) * 1962-03-12 1964-08-11 Kluttz Machine & Foundry Co Textile card flat chains
US3261224A (en) * 1964-01-27 1966-07-19 Specialties Dev Corp Nut for ball screw and nut assembly
EP0191173A1 (en) * 1985-02-13 1986-08-20 International Business Machines Corporation Vacuum impregnation of sintered materials with dry lubricant
US4655610A (en) * 1985-02-13 1987-04-07 International Business Machines Corporation Vacuum impregnation of sintered materials with dry lubricant

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