Global Patent Index - EP 0963454 B1

EP 0963454 B1 2002-12-11 - METHOD OF MAKING CEMENTED CARBIDE BY POWDER INJECTION MOLDING

Title (en)

METHOD OF MAKING CEMENTED CARBIDE BY POWDER INJECTION MOLDING

Title (de)

VERFAHREN ZUM HERSTELLEN VON ZEMENTIERTEM CARBID DURCH SPRITZGIESSEN VON PULVER

Title (fr)

PROCEDE DE FABRICATION DE CARBURE FRITTE PAR MOULAGE PAR INJECTION DE POUDRES

Publication

EP 0963454 B1 (EN)

Application

EP 97910662 A

Priority

  • SE 9701715 W
  • SE 9603936 A

Abstract (en)

[origin: WO9818973A1] The present invention relates to a method of making a sintered body comprising one or more hard constituents in a binder phase by injection molding technique comprising wet milling of a powder mixture containing powders forming the hard constituents and binder phase, drying said milled powder mixture, mixing said powder mixture with organic binder, waxes and surfactant into a feedstock, molding the feedstock into bodies of desired shape in a conventional plastic molding machine, removing the binder from said bodies and sintering. If the surfactant is introduced already during the milling operation the level of porosity in bodies is significantly reduced.

IPC 1-7 (main, further and additional classification)

C22C 29/00; C22C 1/05

IPC 8 full level (invention and additional information)

C04B 35/00 (2006.01); B22F 3/10 (2006.01); C04B 35/628 (2006.01); C22C 1/05 (2006.01); C22C 29/08 (2006.01)

CPC (invention and additional information)

C22C 1/051 (2013.01); B22F 3/225 (2013.01); C22C 29/08 (2013.01)

Designated contracting state (EPC)

AT CH DE FR GB IT LI SE

DOCDB simple family

WO 9818973 A1 19980507; AT 229574 T 20021215; DE 69717861 D1 20030123; DE 69717861 T2 20030508; EP 0963454 A1 19991215; EP 0963454 B1 20021211; JP 2001507075 A 20010529; SE 9603936 D0 19961025