GB1243706A - Method of bonding particles into unitary bodies - Google Patents

Method of bonding particles into unitary bodies

Info

Publication number
GB1243706A
GB1243706A GB36264/69A GB3626469A GB1243706A GB 1243706 A GB1243706 A GB 1243706A GB 36264/69 A GB36264/69 A GB 36264/69A GB 3626469 A GB3626469 A GB 3626469A GB 1243706 A GB1243706 A GB 1243706A
Authority
GB
United Kingdom
Prior art keywords
pressure
electrical energy
pulsed
pulsed electrical
bonded
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
GB36264/69A
Inventor
John Castlereagh Parker
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1243706A publication Critical patent/GB1243706A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • 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
    • B22F3/02—Compacting only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Powder Metallurgy (AREA)

Abstract

1,243,706. Pulsed heating in compression moulding. J. C. PARKER. 18 July, 1969 [19 July, 1968], No. 36264/69. Heading B5A. [Also in Divisions B3 and C7] Weldable particles such as metals, oxides or metallized ceramics are bonded together by applying pulsed electrical energy of at least 1,000,000 amps/sq. inch for about a millisecond, to the compacted particles. Compaction is effected by a controlled pressure pulse or pulses in synchronism with the pulsed electrical energy. As shown in Fig. 2, pressure platens 12 and 13 also apply the pulsed electrical energy to the powder 11 in die 16. The powder is initially compacted by lower platen 13, e.g. at 3000 p.s.i. A pulsed pressure with a peak value of 20,000 p.s.i. is superimposed on the compact by means of pressure transformer 18 operated by power switch 26. The process controller 25 times the electronic switch 24 to pass pulsed electrical energy to the compact via 23 and 21 as a step function approx. 90 degrees or 4À1 milliseconds after the initiation of the pressure. The powders, e.g. Fe, Ti may be mixed with glass or boron fibres or filaments. Wire mesh may be used as reinforcement and the powders may be bonded to sheets, skins or membranes, e.g. stainless steel or Ti 14, 15 in Fig. 2. The atmosphere during pressing may be a vacuum, inert, carburizing or decarburizing. The pressure pulses may be supplied by hydraulic actuators or detonating devices in place of the pressure transformer. Continuous lengths of sintered material may be formed by pressing together previously bonded compacts.
GB36264/69A 1968-07-19 1969-07-18 Method of bonding particles into unitary bodies Expired GB1243706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74605568A 1968-07-19 1968-07-19

Publications (1)

Publication Number Publication Date
GB1243706A true GB1243706A (en) 1971-08-25

Family

ID=24999308

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36264/69A Expired GB1243706A (en) 1968-07-19 1969-07-18 Method of bonding particles into unitary bodies

Country Status (4)

Country Link
US (1) US3567903A (en)
DE (1) DE1936592A1 (en)
FR (1) FR2013286A1 (en)
GB (1) GB1243706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201425A (en) * 1987-02-27 1988-09-01 Inst Nadezhnosti I Dolgovechno Method of producing diamond-impregnated coatings

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873805A (en) * 1961-12-26 1975-03-25 Inoue K Method of making a heat exchanger
US3731050A (en) * 1971-06-25 1973-05-01 Armco Steel Corp Method of making article from metallic powders
IT1214085B (en) * 1987-09-11 1990-01-10 Sintris Srl PERFECTED SINTERING MACHINE AND RELATED METHOD
JP2780429B2 (en) * 1990-03-30 1998-07-30 松下電器産業株式会社 Rare earth-iron magnet manufacturing method
DE4407593C1 (en) * 1994-03-08 1995-10-26 Plansee Metallwerk Process for the production of high density powder compacts
WO1999045356A1 (en) * 1998-03-05 1999-09-10 Nord Klaus Juergen Method and device for monitoring the area of technical rolling bodies
US6886736B1 (en) 2003-10-07 2005-05-03 Veniamin V. Gubarev Method of diffusion welding of different metals in air
US7771497B1 (en) 2005-01-19 2010-08-10 Greatbatch Ltd. Method of using cyclic pressure to increase the planarity of SVO/current collector/CFX electrodes for use in lithium electrochemical cells
EP2198993B1 (en) * 2008-12-19 2012-09-26 EPoS S.r.L. Sintering process and corresponding sintering system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201425A (en) * 1987-02-27 1988-09-01 Inst Nadezhnosti I Dolgovechno Method of producing diamond-impregnated coatings
GB2201425B (en) * 1987-02-27 1991-03-27 Inst Nadezhnosti I Dolgovechno Method of producing diamond-impregnated coatings

Also Published As

Publication number Publication date
US3567903A (en) 1971-03-02
FR2013286A1 (en) 1970-03-27
DE1936592A1 (en) 1970-01-22

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