EP 1319090 A1 20030618 - PRODUCTION OF A HARD METAL BODY WITH HARDNESS GRADIENT, SUCH AS PUNCHING TOOLS
Title (en)
PRODUCTION OF A HARD METAL BODY WITH HARDNESS GRADIENT, SUCH AS PUNCHING TOOLS
Title (de)
HERSTELLUNG EINES HARTMETALLKÖRPERS MIT GRADIERTER HÄRTE, WIE ZUM BEISPIEL STANZWERKZEUGE
Title (fr)
PRODUCTION D'UN CORPS EN METAL DUR A GRADIENT DE DURETE, TELS DES OUTILS DE POIN ONNAGE
Publication
Application
Priority
- NL 0100660 W 20010906
- NL 1016112 A 20000906
Abstract (en)
[origin: WO0220863A1] The invention relates to a method for the production of a body made of hard metal, consisting of a hard compound A and a binder B, wherein pulverulent A and B, or an optionally precompacted article that contains A and B, are introduced into a container and the material containing A and B is compacted in order to increase the relative density (RD) to a value that is higher than 70% of the theoretical maximum density (TMD). The invention further relates to a body of hard metal comprising a hard compound A and a binder B, the mass ratio of A:B gradually changing over a cross-section of the body in order to impart to said body different mechanical properties in one zone Za or to one end (T) and hardness in one zone Zb or to another end (H). The invention also relates to the use of dynamic compaction techniques for the production of such bodies.
IPC 1-7
IPC 8 full level
B22F 3/08 (2006.01); B22F 7/02 (2006.01); C22C 1/05 (2006.01)
CPC (source: EP US)
B22F 3/08 (2013.01 - EP US); B22F 7/02 (2013.01 - EP US); C22C 1/051 (2013.01 - EP US); B22F 2998/00 (2013.01 - EP US)
Citation (search report)
See references of WO 0220863A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0220863 A1 20020314; AU 9438901 A 20020322; CA 2421429 A1 20020314; EP 1319090 A1 20030618; NL 1016112 C2 20020307; US 2004093985 A1 20040520
DOCDB simple family (application)
NL 0100660 W 20010906; AU 9438901 A 20010906; CA 2421429 A 20010906; EP 01975020 A 20010906; NL 1016112 A 20000906; US 36360703 A 20030807