GB931541A - A process for making a material suitable for use in producing shaped sintered parts - Google Patents

A process for making a material suitable for use in producing shaped sintered parts

Info

Publication number
GB931541A
GB931541A GB32913/61A GB3291361A GB931541A GB 931541 A GB931541 A GB 931541A GB 32913/61 A GB32913/61 A GB 32913/61A GB 3291361 A GB3291361 A GB 3291361A GB 931541 A GB931541 A GB 931541A
Authority
GB
United Kingdom
Prior art keywords
mixture
metal
powder
screened
crushed
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
GB32913/61A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens 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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB931541A publication Critical patent/GB931541A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material

Landscapes

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

Abstract

Metal powders or mixtures of a metal and a metal compound or a metal and a metalloid are granulated to improve their flow properti s by heating the powder above the melting temperature of the lowest melting component followed by crushing the sintered compact to form granules which have a lower density than the optimum pressed density necessary to attain the maximum sintered density. The powder mixture may be in the loose state, lightly packed or compacted prior to the heating step which is preferably effected at a temperature which is 0.4 to 0.7 times the absolute melting temperature of the highest melting component of the mixture. The following examples are given: (a) a mixture of 90% Ag/10% Pb is heated at 360 DEG C. in hydrogen and then crushed and screened to give a 70% recovery of 0.06-0.3 mm. granules; (b) an 85% Ag/10% Ni/5% Cd mixture, either loose powder or compacted, is heated at 490 DEG C. or 430 DEG C. in hydrogen and crushed and screened.
GB32913/61A 1960-09-13 1961-09-13 A process for making a material suitable for use in producing shaped sintered parts Expired GB931541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0070323 1960-09-13

Publications (1)

Publication Number Publication Date
GB931541A true GB931541A (en) 1963-07-17

Family

ID=7501627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32913/61A Expired GB931541A (en) 1960-09-13 1961-09-13 A process for making a material suitable for use in producing shaped sintered parts

Country Status (1)

Country Link
GB (1) GB931541A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481166A1 (en) * 1980-04-25 1981-10-30 Cabot Corp PROCESS FOR THE PRODUCTION OF A METAL TABLET FROM A PRACTICALLY INCOMPRESSIBLE METAL POWDER, AND METAL POWDER
FR2555478A1 (en) * 1983-11-25 1985-05-31 Cabot Corp PROCESS FOR PRODUCTION OF A PRODUCT OPENED FROM ALLOY POWDER AND OPEN PRODUCT OBTAINED
GB2150157A (en) * 1983-11-25 1985-06-26 Cabot Corp Wrought powder metallurgy processing
EP0561567A2 (en) * 1992-03-17 1993-09-22 Wisconsin Alumni Research Foundation Alloys containing gallium and aluminum as semiconductor electrical contacts

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481166A1 (en) * 1980-04-25 1981-10-30 Cabot Corp PROCESS FOR THE PRODUCTION OF A METAL TABLET FROM A PRACTICALLY INCOMPRESSIBLE METAL POWDER, AND METAL POWDER
FR2555478A1 (en) * 1983-11-25 1985-05-31 Cabot Corp PROCESS FOR PRODUCTION OF A PRODUCT OPENED FROM ALLOY POWDER AND OPEN PRODUCT OBTAINED
GB2150157A (en) * 1983-11-25 1985-06-26 Cabot Corp Wrought powder metallurgy processing
GB2150156A (en) * 1983-11-25 1985-06-26 Cabot Corp Wrought powder metallurgy processing
EP0561567A2 (en) * 1992-03-17 1993-09-22 Wisconsin Alumni Research Foundation Alloys containing gallium and aluminum as semiconductor electrical contacts
EP0561567A3 (en) * 1992-03-17 1995-08-23 Wisconsin Alumni Res Found Alloys containing gallium and aluminum as semiconductor electrical contacts

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