GB1425195A - Method of producing ferrous powder - Google Patents

Method of producing ferrous powder

Info

Publication number
GB1425195A
GB1425195A GB2366173A GB2366173A GB1425195A GB 1425195 A GB1425195 A GB 1425195A GB 2366173 A GB2366173 A GB 2366173A GB 2366173 A GB2366173 A GB 2366173A GB 1425195 A GB1425195 A GB 1425195A
Authority
GB
United Kingdom
Prior art keywords
powder
water
annealing
produce
added
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
GB2366173A
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of GB1425195A publication Critical patent/GB1425195A/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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • C22C33/0235—Starting from compounds, e.g. oxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)

Abstract

1425195 Producing iron powder MANNESMANN AG 17 May 1973 [29 June 1972] 23661/73 Heading C7X Ferrous powder of selected bulk density is produced by atomizing a poured stream of liquid iron or steel melt with pressurized water to obtain a raw powder and annealing the powder to reduce its C and O content, pure O 2 or O 2 -enriched air being added at elevated pressure to the atomization water to enrich its O 2 content so that the partial pressure of O 2 is higher than normal, the enriched water serving to produce a thicker oxidized layer on the particles than would normally result, so that on annealing of the powder and consequent removal of oxygen therefrom, the surface of individual particles becomes spongy and the bulk density is reduced. H 2 O 2 may also be added to the water, so that it decomposes to produce O 2 .
GB2366173A 1972-06-29 1973-05-17 Method of producing ferrous powder Expired GB1425195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2232760A DE2232760C2 (en) 1972-06-29 1972-06-29 Method of changing the bulk density of iron powder

Publications (1)

Publication Number Publication Date
GB1425195A true GB1425195A (en) 1976-02-18

Family

ID=5849647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2366173A Expired GB1425195A (en) 1972-06-29 1973-05-17 Method of producing ferrous powder

Country Status (7)

Country Link
US (1) US3909239A (en)
JP (1) JPS572761B2 (en)
CA (1) CA991890A (en)
DE (1) DE2232760C2 (en)
FR (1) FR2190554B1 (en)
GB (1) GB1425195A (en)
SE (1) SE380458B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198749A (en) * 1986-12-12 1988-06-22 Mannesmann Ag Method of manufacturing blocks or profiled sections by extrusion

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5346474A (en) * 1976-10-08 1978-04-26 Matsushita Electric Ind Co Ltd Catalytic cleaning apparatus for exhaust gas
DE2806716C3 (en) * 1978-02-14 1985-08-29 Mannesmann AG, 4000 Düsseldorf Process for making iron powder
CS204329B1 (en) * 1978-09-22 1981-04-30 Milan Slesar Method of making the sintered iron pressings of the hardened iron oxides
DE19535444C2 (en) * 1995-01-20 1999-07-22 Scholz Paul Friedrich Dr Ing Process for the powder metallurgical manufacture of articles and articles produced in this way
US6589667B1 (en) * 2000-09-26 2003-07-08 Höganäs Ab Spherical porous iron powder and method for producing the same
US20070241063A1 (en) * 2006-04-18 2007-10-18 Quebec Metal Powders Ltd. Process for treating water using atomized ferrous powders containing 0.25 to 4 wt% carbon and 1 to 6 wt% oxygen
UA100025C2 (en) * 2007-08-02 2012-11-12 Сейсол Текнолоджи (Пти) Лимитед Method for preparation of hydrocarbon synthesis catalyst and its use in process of hydrocarbon synthesis
CN104325136A (en) * 2014-11-26 2015-02-04 康凯 Metal powder as well as preparation method and application thereof
CN105397098A (en) * 2015-12-07 2016-03-16 励福(江门)环保科技股份有限公司 Preparation method of Ag powder for cold spraying
CN105397097A (en) * 2015-12-07 2016-03-16 励福(江门)环保科技股份有限公司 Preparation method of precious metal powder for 3D printing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2159433A (en) * 1938-01-05 1939-05-23 John F Ervin Method of disintegrating metal into shotting
US2384892A (en) * 1942-05-28 1945-09-18 F W Berk & Company Method for the comminution of molten metals
US2341704A (en) * 1942-08-26 1944-02-15 John F Ervin Method of disintegrating metal into abrasive material
US3353951A (en) * 1966-05-09 1967-11-21 Glidden Co Fluffy iron powder and process for preparing same
SE350770B (en) * 1971-05-14 1972-11-06 Hoeganaes Ab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198749A (en) * 1986-12-12 1988-06-22 Mannesmann Ag Method of manufacturing blocks or profiled sections by extrusion
GB2198749B (en) * 1986-12-12 1990-07-25 Mannesmann Ag A method of manufacturing blocks or profiled sections

Also Published As

Publication number Publication date
DE2232760C2 (en) 1973-10-11
CA991890A (en) 1976-06-29
FR2190554B1 (en) 1976-11-12
JPS4943865A (en) 1974-04-25
DE2232760B1 (en) 1973-03-22
JPS572761B2 (en) 1982-01-18
US3909239A (en) 1975-09-30
DE2232760A1 (en) 1973-03-22
SE380458B (en) 1975-11-10
FR2190554A1 (en) 1974-02-01

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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