EP 2647731 A1 20131009 - Method of making a cemented carbide body
Title (en)
Method of making a cemented carbide body
Title (de)
Verfahren zur Herstellung eines Hartmetallkörpers
Title (fr)
Procédé de fabrication de corps de carbure cimenté
Publication
Application
Priority
EP 12163181 A 20120404
Abstract (en)
The present invention relates to a method of making a cemented carbide comprising the steps of first forming a powder blend comprising WC raw material powder and a metal binder phase powder, where the WC raw material is single crystal and where the WC grains after sintering have a spherical or angular morphology. The powder blend is then subjected to a mixing operation using a non-contact mixer wherein acoustic waves achieving resonance conditions to form a mixed powder blend and then subjecting said mixed powder blend to a pressing and sintering operation. The method makes it possible to maintain the grain size, the grain size distribution and the morphology of the WC grains.
IPC 8 full level
C22C 1/10 (2006.01); C22C 29/08 (2006.01)
CPC (source: EP)
C22C 1/1084 (2013.01); B22F 2998/00 (2013.01); B22F 2999/00 (2013.01)
Citation (applicant)
- EP 0752921 A1 19970115 - SANDVIK AB [SE]
- WO 2008088321 A1 20080724 - HOWE HAROLD W [US], et al
- US 7188993 B1 20070313 - HOWE HAROLD W [US], et al
Citation (search report)
- [XA] US 5328763 A 19940712 - TERRY CHARLES J [US]
- [XDA] EP 0752921 A1 19970115 - SANDVIK AB [SE]
- [XA] US 7017677 B2 20060328 - KESHAVAN MADAPUSI K [US], et al
- [AD] US 7188993 B1 20070313 - HOWE HAROLD W [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2647731 A1 20131009; EP 2647731 B1 20170719; ES 2643688 T3 20171123
DOCDB simple family (application)
EP 12163181 A 20120404; ES 12163181 T 20120404