SE8704958L - PROCEDURE FOR PREPARING THE SUBJECT OR PROFILES - Google Patents

PROCEDURE FOR PREPARING THE SUBJECT OR PROFILES

Info

Publication number
SE8704958L
SE8704958L SE8704958A SE8704958A SE8704958L SE 8704958 L SE8704958 L SE 8704958L SE 8704958 A SE8704958 A SE 8704958A SE 8704958 A SE8704958 A SE 8704958A SE 8704958 L SE8704958 L SE 8704958L
Authority
SE
Sweden
Prior art keywords
powder
profiles
preparing
procedure
subject
Prior art date
Application number
SE8704958A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE500829C2 (en
SE8704958D0 (en
Inventor
V Linnemann
N Dautzenberg
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 SE8704958D0 publication Critical patent/SE8704958D0/en
Publication of SE8704958L publication Critical patent/SE8704958L/en
Publication of SE500829C2 publication Critical patent/SE500829C2/en

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
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • 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
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%

Abstract

A molten mass of steel is atomised by means of pressurised water; the irregular steel powder produced is subjected to a reduction annealing to remove the oxide skin surrounding the individual powder grains, plate-shaped compacts produced from the powder and a sheet-metal case is filled with these compacts to a desired level and the resulting preform extruded.
SE8704958A 1986-12-12 1987-12-11 Procedure for the preparation of substances or profiles SE500829C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3643016A DE3643016C1 (en) 1986-12-12 1986-12-12 Process for the production of blocks or profiles

Publications (3)

Publication Number Publication Date
SE8704958D0 SE8704958D0 (en) 1987-12-11
SE8704958L true SE8704958L (en) 1988-06-13
SE500829C2 SE500829C2 (en) 1994-09-12

Family

ID=6316349

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8704958A SE500829C2 (en) 1986-12-12 1987-12-11 Procedure for the preparation of substances or profiles

Country Status (3)

Country Link
DE (1) DE3643016C1 (en)
GB (1) GB2198749B (en)
SE (1) SE500829C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928436C1 (en) * 1989-08-24 1991-04-18 Mannesmann Ag, 4000 Duesseldorf, De
US6837915B2 (en) * 2002-09-20 2005-01-04 Scm Metal Products, Inc. High density, metal-based materials having low coefficients of friction and wear rates

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544974A (en) * 1939-11-04 1942-05-06 British Thomson Houston Co Ltd Improved method of and apparatus for forming rods, tubes and like articles by extrusion
GB597638A (en) * 1943-08-02 1948-01-30 British Thomson Houston Co Ltd Improvements relating to methods of and apparatus for extruding powdered materials
GB732603A (en) * 1953-05-11 1955-06-29 Ici Ltd Improvements in or relating to methods of and apparatus for the direct extrusion of a metal
GB1069478A (en) * 1964-04-06 1967-05-17 Smith Corp A O Method of making steel powder
GB1349452A (en) * 1970-09-10 1974-04-03 Ti Group Services Ltd Production of an aluminium product
US3766769A (en) * 1972-06-22 1973-10-23 Western Electric Co Method of and means for commencing a deforming operation, e. g., hydrostatic extrusion of a billet
DE2232760C2 (en) * 1972-06-29 1973-10-11 Mannesmann Ag, 4000 Duesseldorf Method of changing the bulk density of iron powder
US3824097A (en) * 1972-12-19 1974-07-16 Federal Mogul Corp Process for compacting metal powder
JPS5219823B2 (en) * 1972-12-25 1977-05-31
US3834004A (en) * 1973-03-01 1974-09-10 Metal Innovations Inc Method of producing tool steel billets from water atomized metal powder
DE2310784B2 (en) * 1973-03-03 1975-03-13 Fa. Dr. Eugen Duerrwaechter Doduco, 7530 Pforzheim Process for the production of a ductile silver-metal oxide semi-finished product
DE2419014C3 (en) * 1974-04-19 1985-08-01 Nyby Bruks AB, Nybybruk Method of manufacturing stainless steel pipes and application of the method to the manufacture of composite pipes
GB1602581A (en) * 1977-06-24 1981-11-11 American Can Co Production of steel strip by powder metallurgy
DE2823001C2 (en) * 1978-05-26 1984-08-23 Glacier Gmbh Deva Werke, 3570 Stadtallendorf Use of an extrusion process on higher molecular weight compounds
DE3009916C2 (en) * 1980-03-14 1985-10-10 Nyby Uddeholm AB, Torshälla Extruded billets for the powder metallurgical production of pipes and processes for their production
BR8200106A (en) * 1982-01-11 1983-09-13 Metal Leve Sa PROCESS FOR MANUFACTURING OF RING-HOLDERS BY METALLURGY OF OP, FROM AUSTENITIC FERROUS ALLOYS

Also Published As

Publication number Publication date
DE3643016C1 (en) 1987-08-13
SE500829C2 (en) 1994-09-12
SE8704958D0 (en) 1987-12-11
GB2198749B (en) 1990-07-25
GB8728325D0 (en) 1988-01-06
GB2198749A (en) 1988-06-22

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