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SE8105681L - PROCEDURE FOR THE PREPARATION OF FORMALS WITH PREDICTED FORM - Google Patents

PROCEDURE FOR THE PREPARATION OF FORMALS WITH PREDICTED FORM

Info

Publication number
SE8105681L
SE8105681L SE8105681A SE8105681A SE8105681L SE 8105681 L SE8105681 L SE 8105681L SE 8105681 A SE8105681 A SE 8105681A SE 8105681 A SE8105681 A SE 8105681A SE 8105681 L SE8105681 L SE 8105681L
Authority
SE
Sweden
Prior art keywords
powder
green body
bar
hot isostatic
substantially spherical
Prior art date
Application number
SE8105681A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
P Hellman
Original Assignee
Uddeholms Ab
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 Uddeholms Ab filed Critical Uddeholms Ab
Publication of SE8105681L publication Critical patent/SE8105681L/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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • 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
    • B22F1/148—Agglomerating
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing

Landscapes

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

Abstract

A method for the production of shaped articles, particularly articles having irregular cross section, by hot isostatic compaction of metal powder, using as starting material a powder having substantially spherical grain shapes, crushing the substantially spherical powder to minor particles having irregular shape, forming a green body of the crushed powder, sintering the green body to obtain closed, that is to say non-communicating, pores, and subjecting the sintered body to hot isostatic compaction to full density. In an example, spherical particles of a high speed steel are wet milled under dichloromethane, dried, soft annealed at 780 DEG C in vacuum lightly ground to disperse lumps, then cold compacted in a rubber mould at 4000 bar. The green body is then sintered at 1190 DEG C and finally isostatically compacted at 1000 bar and 1150 DEG C.
SE8105681A 1980-10-01 1981-09-25 PROCEDURE FOR THE PREPARATION OF FORMALS WITH PREDICTED FORM SE8105681L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8006867 1980-10-01

Publications (1)

Publication Number Publication Date
SE8105681L true SE8105681L (en) 1982-04-02

Family

ID=20341867

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8105681A SE8105681L (en) 1980-10-01 1981-09-25 PROCEDURE FOR THE PREPARATION OF FORMALS WITH PREDICTED FORM

Country Status (7)

Country Link
JP (1) JPS5789403A (en)
AT (1) AT376919B (en)
DE (1) DE3138669A1 (en)
FR (1) FR2490975B1 (en)
GB (1) GB2084612B (en)
IT (1) IT1138676B (en)
SE (1) SE8105681L (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837102A (en) * 1981-08-29 1983-03-04 Sumitomo Electric Ind Ltd Manufacturing method of powder parts
US4464206A (en) * 1983-11-25 1984-08-07 Cabot Corporation Wrought P/M processing for prealloyed powder
US4464205A (en) * 1983-11-25 1984-08-07 Cabot Corporation Wrought P/M processing for master alloy powder
GB2154614B (en) * 1984-02-22 1987-11-18 H I P Densified coatings by application of direct fluid pressure
SE442486B (en) * 1984-05-22 1986-01-13 Kloster Speedsteel Ab SETTING UP POWDER METAL SURGICAL
EP0203197B1 (en) * 1984-10-26 1991-03-06 Japan as represented by Director-General, Agency of Industrial Science and Technology Process for producing super-heat-resistant alloy material
AT388124B (en) * 1986-11-28 1989-05-10 Ver Edelstahlwerke Ag METHOD FOR PRODUCING MOLDED BODIES
US6770113B2 (en) 1996-02-21 2004-08-03 Mykrolis Corporation Method for forming anisotrophic metal particles
US5814272A (en) * 1996-02-21 1998-09-29 Millipore Corporation Method for forming dendritic metal particles
SE534273C2 (en) * 2009-01-12 2011-06-28 Metec Powder Metal Ab Steel product and manufacture of steel product through, among other things, sintering, high speed pressing and hot isost pressing
US8834786B2 (en) 2010-06-30 2014-09-16 Kennametal Inc. Carbide pellets for wear resistant applications
CN102990055B (en) * 2012-08-24 2015-06-10 山东莱芜金华辰粉末冶金制品有限公司 Novel process for producing high-density iron based powder metallurgy structural parts
DE102017202497A1 (en) * 2017-02-16 2018-08-16 Robert Bosch Gmbh Method for press-sintering steel components, press-sintered steel component itself and use of a special steel powder as a starting material for the production thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE357391B (en) * 1967-07-31 1973-06-25 Aerojet General Co
SE333437B (en) * 1969-03-03 1971-03-15 Asea Ab
US4066449A (en) * 1974-09-26 1978-01-03 Havel Charles J Method for processing and densifying metal powder
CH610792A5 (en) * 1975-04-28 1979-05-15 Bbc Brown Boveri & Cie Process for producing an object of coarse-grained microstructure from a superalloy, and object produced by the process
GB1590953A (en) * 1977-10-04 1981-06-10 Powdrex Ltd Making articles from metallic powder
DE2907885A1 (en) * 1979-03-01 1980-09-11 Roechling Burbach Gmbh Stahl Powder metallurgical mfr. of components without using capsules - where surface of pressed blank is heated to form continuous thin skin prior to hot isostatic pressing
DE2921592C2 (en) * 1979-05-28 1982-06-09 Gränges Nyby AB, Nybybruk Method and device for comminuting a powder made of stainless or heat-resistant steel

Also Published As

Publication number Publication date
IT1138676B (en) 1986-09-17
FR2490975B1 (en) 1987-09-04
GB2084612A (en) 1982-04-15
ATA418681A (en) 1984-06-15
JPS5789403A (en) 1982-06-03
DE3138669A1 (en) 1982-06-09
IT8124224A0 (en) 1981-09-30
GB2084612B (en) 1985-07-10
AT376919B (en) 1985-01-25
FR2490975A1 (en) 1982-04-02

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