GB705005A - Method of bonding of polytetrafluorethylene to metal - Google Patents

Method of bonding of polytetrafluorethylene to metal

Info

Publication number
GB705005A
GB705005A GB344752A GB344752A GB705005A GB 705005 A GB705005 A GB 705005A GB 344752 A GB344752 A GB 344752A GB 344752 A GB344752 A GB 344752A GB 705005 A GB705005 A GB 705005A
Authority
GB
United Kingdom
Prior art keywords
powder
metal
sintered
discs
polytetrafluorethylene
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
GB344752A
Inventor
James William Lennox
Leslie Harrlson
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.)
SINTERED PRODUCTS Ltd
Original Assignee
SINTERED PRODUCTS 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 SINTERED PRODUCTS Ltd filed Critical SINTERED PRODUCTS Ltd
Priority to GB344752A priority Critical patent/GB705005A/en
Publication of GB705005A publication Critical patent/GB705005A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Powder Metallurgy (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A method of bonding polytetrafluorethylene to metal consists in bringing a layer of polytetrafluorethylene in powder form into contact with a sintered or unsintered compact of the metal and compressing and heating at a temperature below the decomposition temperature of the polytetrafluorethylene to sinter any unsintered powder and to cause a part only of the layer to penetrate into the metal. Iron or bronze powder of 30 B.S.S.-100 B.S.S. is sintered into discs and the discs subjected to 500-1000 lbs./sq. in. at 350 DEG C. for 1 hr. with a layer of extruded p.t.f.e. between them. Alternatively, the discs may be sintered from a compressed double layer of 200 B.S.S. powder and 30 B.S.S. powder. The p.t.f.e. may be in the form of a powder compact and heated for 1 1/2 hrs. at 360 DEG C. Oil or water quenching may be employed. In a further example, iron powder disc compacts of 100-200 B.S.S. size are sintered in a protective atmosphere at 1100-1130 DEG C. for 1/2 hr. P.t.f.e. powder is placed between the discs and compressed at 1 ton/sq. in. The assembly is the heated to 360 DEG C. for 1 hr. and finally cooled under pressure by water or air. The method may be used to bond a plug of p.t.f.e. in a cylinder. The bonded material may be used for electrical components and tong-tips. The p.t.f.e. may contain a filler such as metal. Specifications 544,969, [Group II], 583,418, [Group IV], 657,080 and 657,085, [both in Group XXXIV], are referred to.
GB344752A 1952-02-08 1952-02-08 Method of bonding of polytetrafluorethylene to metal Expired GB705005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB344752A GB705005A (en) 1952-02-08 1952-02-08 Method of bonding of polytetrafluorethylene to metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB344752A GB705005A (en) 1952-02-08 1952-02-08 Method of bonding of polytetrafluorethylene to metal

Publications (1)

Publication Number Publication Date
GB705005A true GB705005A (en) 1954-03-03

Family

ID=9758503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB344752A Expired GB705005A (en) 1952-02-08 1952-02-08 Method of bonding of polytetrafluorethylene to metal

Country Status (1)

Country Link
GB (1) GB705005A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104069A5 (en) * 1970-10-27 1972-04-14 Daido Metal Co
US4615854A (en) * 1984-04-30 1986-10-07 Federal-Mogul Corporation Method of making a PTFE based tape suitable for impregnation into a porous metal matrix
US4732818A (en) * 1984-04-30 1988-03-22 Federal-Mogul Corporation Composite bearing material with polymer filled metal matrix interlayer of distinct metal particle sizes and method of making same
US5019308A (en) * 1984-04-30 1991-05-28 Federal-Mogul Corporation Method of making a PTFE based tape suitable for impregnation into a porous metal matrix
WO2007137939A1 (en) * 2006-05-26 2007-12-06 Schaeffler Kg Clutch release bearing comprising an adjusting ring

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104069A5 (en) * 1970-10-27 1972-04-14 Daido Metal Co
US3705450A (en) * 1970-10-27 1972-12-12 Daido Metal Co Ltd Bearing material
US4615854A (en) * 1984-04-30 1986-10-07 Federal-Mogul Corporation Method of making a PTFE based tape suitable for impregnation into a porous metal matrix
US4732818A (en) * 1984-04-30 1988-03-22 Federal-Mogul Corporation Composite bearing material with polymer filled metal matrix interlayer of distinct metal particle sizes and method of making same
US5019308A (en) * 1984-04-30 1991-05-28 Federal-Mogul Corporation Method of making a PTFE based tape suitable for impregnation into a porous metal matrix
WO2007137939A1 (en) * 2006-05-26 2007-12-06 Schaeffler Kg Clutch release bearing comprising an adjusting ring

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