GB714560A - Improvements in or relating to method of making porous sintered articles - Google Patents

Improvements in or relating to method of making porous sintered articles

Info

Publication number
GB714560A
GB714560A GB2861952A GB2861952A GB714560A GB 714560 A GB714560 A GB 714560A GB 2861952 A GB2861952 A GB 2861952A GB 2861952 A GB2861952 A GB 2861952A GB 714560 A GB714560 A GB 714560A
Authority
GB
United Kingdom
Prior art keywords
compact
binder
parts
rate
heating
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
GB2861952A
Inventor
Raymond S Gurnick
Robert T Joy
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
Thompson Products Inc
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 Thompson Products Inc filed Critical Thompson Products Inc
Priority to GB2861952A priority Critical patent/GB714560A/en
Publication of GB714560A publication Critical patent/GB714560A/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
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

714,560. Powder metallurgy. THOMPSON PRODUCTS, Inc. Nov. 13, 1952, No. 28619/52. Class 83 (4). A method of making porous sintered metal articles of predetermined dimensions and density consists in heating a preformed plastic mass containing metal particles and a heatfugitive binder to a sintering temperature to volatilize said binder and, controlling the rate of volatilization by adjusting the flow of a current of protective gas in the heating zone. Suitable binders are thermally depolymerizable polyolefins such as polystyrene. In an example, 100 parts by weight of iron powder, 7 parts by weight of polystyrene and 5 parts of wax were shaped by injection moulding and sintered at 2100‹ F. in hydrogen, which was passed through the furnace at 1.5-10 ft./min. to produce a compact of 90-60 per cent of the full density of a solid iron compact. Alternatively, the compact may travel through a furnace having a temperature of 300‹ F. at one end and 2100‹ F. at the other, the heating rate being 15‹ F./min. The hydrogen atmosphere may be replaced by cracked ammonia. The constituency of the gas passed over the compacts may be analyzed and the rate increased if the volume of depolymerization products is in excess of 75 per cent. A quantity of vaporized binder may be added to the gas stream.
GB2861952A 1952-11-13 1952-11-13 Improvements in or relating to method of making porous sintered articles Expired GB714560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2861952A GB714560A (en) 1952-11-13 1952-11-13 Improvements in or relating to method of making porous sintered articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2861952A GB714560A (en) 1952-11-13 1952-11-13 Improvements in or relating to method of making porous sintered articles

Publications (1)

Publication Number Publication Date
GB714560A true GB714560A (en) 1954-09-01

Family

ID=10278461

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2861952A Expired GB714560A (en) 1952-11-13 1952-11-13 Improvements in or relating to method of making porous sintered articles

Country Status (1)

Country Link
GB (1) GB714560A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917384A (en) * 1956-01-19 1959-12-15 Gen Electric Method of making foam material from nickel powder
US3228074A (en) * 1962-02-27 1966-01-11 Deventer Werke G M B H Casting mold and method of making same
WO2018092037A1 (en) * 2016-11-17 2018-05-24 Politechnika Poznanska Method for sintering a metal with a plastic material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917384A (en) * 1956-01-19 1959-12-15 Gen Electric Method of making foam material from nickel powder
US3228074A (en) * 1962-02-27 1966-01-11 Deventer Werke G M B H Casting mold and method of making same
WO2018092037A1 (en) * 2016-11-17 2018-05-24 Politechnika Poznanska Method for sintering a metal with a plastic material

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