GB1225582A - - Google Patents

Info

Publication number
GB1225582A
GB1225582A GB1225582DA GB1225582A GB 1225582 A GB1225582 A GB 1225582A GB 1225582D A GB1225582D A GB 1225582DA GB 1225582 A GB1225582 A GB 1225582A
Authority
GB
United Kingdom
Prior art keywords
powder
mixture
powders
steel
sintered
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
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 filed Critical
Publication of GB1225582A publication Critical patent/GB1225582A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • C22C33/0271—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5% with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Powder Metallurgy (AREA)

Abstract

1,225,582. Powder for sintering to form steel. HÍGAN€S A.B. March 13, 1969 [March 29, 1968], No.13378/69. Headings C7A, C7D. An inhomogeneous powder, for use in making sintered steel having low dimensional changes during sintering and hardening, comprises:- Ni 0À2-0À8% Mn 0À5-2% and Mo 0-0À6% the balance being iron with a maximum oxygen content of 0À3%; and has a compressibility of at least 6À30 g/cm<SP>3</SP> at a compacting pressure of 4À2 2 Mp/ cm<SP>2</SP> . The powder may be prepared by (1) mixing Fe, Ni and Mo powders together (the Ni and Mo powders being smaller than the Fe powder) and heating the mixture at 730-1030‹C. in a reducing atmosphere for at least 15 minutes; (2) mixing the powders as above with an organic binder solution and distilling off the solvent or (3) heating at 730- 1030‹ C. a mixture of Fe powder with Ni and Mo oxides or aqueous solution of Ni and Mo compounds. The prealloyed powder is then mixed with Mn (e.g. in the form of Fe Mn or electrolytic Mn), graphite to provide the C in the steel and a die lubricant (e.g. zinc stearate), the mixture being pressed and sintered. The sintered compact may be austeritized at 850‹ C. and quenched in oil to 50‹ C.
GB1225582D 1968-03-29 1969-03-13 Expired GB1225582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE417668 1968-03-29

Publications (1)

Publication Number Publication Date
GB1225582A true GB1225582A (en) 1971-03-17

Family

ID=20263675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1225582D Expired GB1225582A (en) 1968-03-29 1969-03-13

Country Status (5)

Country Link
DE (1) DE1914375A1 (en)
ES (1) ES365037A1 (en)
FR (1) FR2005021A1 (en)
GB (1) GB1225582A (en)
NL (1) NL6904593A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE372293B (en) * 1972-05-02 1974-12-16 Hoeganaes Ab
US4251273A (en) * 1979-03-02 1981-02-17 Smith David T Method of forming valve lifters
EP0334968B1 (en) * 1987-09-30 1995-02-08 Kawasaki Steel Corporation Composite alloy steel powder and sintered alloy steel

Also Published As

Publication number Publication date
ES365037A1 (en) 1971-03-16
DE1914375A1 (en) 1969-10-09
FR2005021A1 (en) 1969-12-05
NL6904593A (en) 1969-10-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees