Global Patent Index - EP 0912458 B1

EP 0912458 B1 20020306 - SINTERING METHOD

Title (en)

SINTERING METHOD

Title (de)

SINTERVERFAHREN

Title (fr)

PROCEDE DE FRITTAGE

Publication

EP 0912458 B1 20020306 (EN)

Application

EP 97932066 A 19970623

Priority

  • SE 9701111 W 19970623
  • SE 9602751 A 19960711
  • SE 9602752 A 19960711

Abstract (en)

[origin: WO9802394A1] The present invention relates to a method of sintering cemented carbide bodies including heating said bodies to the sintering temperature in a suitable atmosphere and cooling. If said cooling at least to below 1200 DEG C is performed in a hydrogen atmosphere of pressure 0.4-0.9 bar and >0.1 bar noble gas, preferably argon cemented carbide bodies with no surface layer of binder phase are obtained. This is an advantage when said bodies are to be coated with wear resistant layers by the use of CVD-, MTCVD- or PVD-technique.

IPC 1-7

C04B 35/64

IPC 8 full level

C04B 35/64 (2006.01); B22F 3/10 (2006.01); C04B 35/645 (2006.01); C22C 1/04 (2006.01); C22C 1/05 (2006.01); C22C 29/08 (2006.01); C23C 30/00 (2006.01)

CPC (source: EP)

B22F 3/101 (2013.01); B22F 3/1028 (2013.01); C22C 1/051 (2013.01); C22C 29/08 (2013.01); C23C 30/005 (2013.01); B22F 2201/013 (2013.01); B22F 2201/11 (2013.01)

Citation (examination)

Designated contracting state (EPC)

AT CH DE FR GB IT LI SE

DOCDB simple family (publication)

WO 9802394 A1 19980122; AT 214044 T 20020315; DE 69710899 D1 20020411; DE 69710899 T2 20021128; EP 0912458 A1 19990506; EP 0912458 B1 20020306; JP 2000515110 A 20001114

DOCDB simple family (application)

SE 9701111 W 19970623; AT 97932066 T 19970623; DE 69710899 T 19970623; EP 97932066 A 19970623; JP 50590798 A 19970623