GB1407557A - Process for heating and sintering ferrous powder metal compacts - Google Patents

Process for heating and sintering ferrous powder metal compacts

Info

Publication number
GB1407557A
GB1407557A GB3900573A GB3900573A GB1407557A GB 1407557 A GB1407557 A GB 1407557A GB 3900573 A GB3900573 A GB 3900573A GB 3900573 A GB3900573 A GB 3900573A GB 1407557 A GB1407557 A GB 1407557A
Authority
GB
United Kingdom
Prior art keywords
heating
compact
sintering
temperature
induction
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
GB3900573A
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.)
Gleason Works
Original Assignee
Gleason Works
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 Gleason Works filed Critical Gleason Works
Publication of GB1407557A publication Critical patent/GB1407557A/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
    • B22F3/1017—Multiple heating or additional steps
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Abstract

1407557 Induction sintering of ferrous metal powder GLEASON WORKS 17 Aug 1973 [5 Sept 1972] 39005/73 Headings C7D and C7N Ferrous metal powder compacts are pre-heated to raise the outer surface only to at least 300‹F and then inductively heated to sintering temperature. The pre-heating is carried out by radiant heat preferably to above 400‹F but below the sintering temperature and the compact may be cooled to room temperature prior to induction heating in a field of at least 1K Hz. After attaining sintering temperature by inductive heating e.g. 1800- 2500‹F the temperature may be maintained by radiant heating to complete the sintering. The pre-heating of the surface of the compact reduces or eliminates the incubation period of the powder compact in a low frequency induction field and consequently sintering temperature is reached more quickly. As shown in the Figure a continuous process of pre-heating, induction heating, radiant heating and temperature adjustment of the sintered compact to 1500-1900‹F for final press forming can be carried out. The compact is formed by mechanical or isostatic pressing of a mixture of Fe and graphite powder e.g. Fe + 0.2-0.6 per cent graphite and the process is used for the production of bevel and spur gears.
GB3900573A 1972-09-05 1973-08-17 Process for heating and sintering ferrous powder metal compacts Expired GB1407557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28596572A 1972-09-05 1972-09-05

Publications (1)

Publication Number Publication Date
GB1407557A true GB1407557A (en) 1975-09-24

Family

ID=23096448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3900573A Expired GB1407557A (en) 1972-09-05 1973-08-17 Process for heating and sintering ferrous powder metal compacts

Country Status (13)

Country Link
US (1) US3779747A (en)
JP (1) JPS5717041B2 (en)
AU (1) AU470373B2 (en)
BE (1) BE804426A (en)
BR (1) BR7306517D0 (en)
CA (1) CA1006717A (en)
CH (1) CH586086A5 (en)
DE (1) DE2342051C2 (en)
FR (1) FR2197677B1 (en)
GB (1) GB1407557A (en)
IT (1) IT998333B (en)
SE (1) SE396563B (en)
ZA (1) ZA734867B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126607A (en) * 1982-09-13 1984-03-28 Aluminum Co Of America A method for producing aluminium powder alloy products having improved strength properties
GB2181745A (en) * 1985-08-28 1987-04-29 Avesta Nyby Powder Ab Hot-deformed powder metallurgy articles

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894892A (en) * 1972-09-05 1975-07-15 Gleason Works Process for heating and sintering ferrous powder metal compacts with radio frequency magnetic field
US4051590A (en) * 1972-10-19 1977-10-04 Cincinnati Incorporated Method for hot forging finished articles from powder metal preforms
JPS551323B2 (en) * 1973-08-09 1980-01-12
US3981725A (en) * 1974-03-06 1976-09-21 The Gleason Works Process and system for forming finished parts from powder metal
US4050932A (en) * 1975-04-07 1977-09-27 General Motors Corporation Colloidal graphite forging lubricant and method
JPS5538983A (en) * 1978-09-13 1980-03-18 Sumitomo Electric Ind Ltd Production of high density powder molding by powder hot forging process
JPS5554503A (en) * 1978-10-13 1980-04-21 Toyota Motor Corp Production of powder forging
US4414028A (en) * 1979-04-11 1983-11-08 Inoue-Japax Research Incorporated Method of and apparatus for sintering a mass of particles with a powdery mold
FR2502640B1 (en) * 1981-03-24 1986-02-28 Do Nii Chernoj Metallurgii PROCESS FOR OBTAINING SPONGIOUS IRON, FURNACE FOR ITS IMPLEMENTATION AND IRON OBTAINED BY SAID PROCESS
JPS57192202A (en) * 1981-05-22 1982-11-26 Toyota Motor Corp Rapid manufacturing method of sintered product
US5157232A (en) * 1990-05-18 1992-10-20 Tocco, Inc. Method and apparatus for inductively heating asymmetrically shaped workpieces
US5134260A (en) * 1990-06-27 1992-07-28 Carnegie-Mellon University Method and apparatus for inductively heating powders or powder compacts for consolidation
US5403540A (en) * 1990-10-29 1995-04-04 Corning Incorporated Heating of formed metal structure by induction
US20040005237A1 (en) * 2000-07-20 2004-01-08 Fuping Liu Post-delubrication peening for forged powder metal components
DE102012208170A1 (en) * 2012-05-16 2013-11-21 Fct Anlagenbau Gmbh Device for heat treatment of a workpiece
CN111375758A (en) * 2020-04-23 2020-07-07 王伟东 Sintering method of titanium or titanium alloy powder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE592278C (en) * 1928-10-17 1934-02-05 Deutsch Englische Quarzschmelz Process for melting inorganic substances that are second class conductors in an electromagnetic high frequency field
US2228600A (en) * 1938-10-05 1941-01-14 Hardy Metallurg Co Powder metallurgy
US3331686A (en) * 1964-09-29 1967-07-18 Ilikon Corp Method of heating and forming powdered metals
US3270102A (en) * 1964-12-23 1966-08-30 Ken Mar Clay Products Ltd Method and apparatus for the production of hardened clay products
US3464252A (en) * 1965-01-25 1969-09-02 Gen Dynamics Corp Method and apparatus for powdered metal forming
DE2024064A1 (en) * 1970-05-16 1971-11-25 Mitsubishi Metal Mining Co Ltd Drop forging of sintered iron alloy for high density
US3708645A (en) * 1971-10-12 1973-01-02 Park Ohio Industries Inc Method of heating a workpiece of particulate material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126607A (en) * 1982-09-13 1984-03-28 Aluminum Co Of America A method for producing aluminium powder alloy products having improved strength properties
GB2181745A (en) * 1985-08-28 1987-04-29 Avesta Nyby Powder Ab Hot-deformed powder metallurgy articles
GB2181745B (en) * 1985-08-28 1990-03-21 Avesta Nyby Powder Ab A process for the production of powder-metallurgy articles

Also Published As

Publication number Publication date
SE396563B (en) 1977-09-26
BE804426A (en) 1974-03-04
US3779747A (en) 1973-12-18
FR2197677B1 (en) 1978-03-10
DE2342051C2 (en) 1985-01-17
FR2197677A1 (en) 1974-03-29
AU470373B2 (en) 1976-03-11
ZA734867B (en) 1975-02-26
DE2342051A1 (en) 1974-05-09
JPS4986205A (en) 1974-08-19
CH586086A5 (en) 1977-03-31
BR7306517D0 (en) 1974-06-27
AU5862273A (en) 1975-01-30
JPS5717041B2 (en) 1982-04-08
CA1006717A (en) 1977-03-15
IT998333B (en) 1976-01-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee