EP 0698435 A1 19960228 - Powder metallurgy apparatus and process using electrostatic die wall lubrication
Title (en)
Powder metallurgy apparatus and process using electrostatic die wall lubrication
Title (de)
Verfahren und Werkzeug der Pulvermetallurgie mit elektrostatischer Schmierung der Wände der Pressform
Title (fr)
Procédé et installation de la métallurgie des poudres comprenant une lubrification électrostatique des parois de la matrice
Publication
Application
Priority
- US 29497994 A 19940824
- US 47946495 A 19950607
Abstract (en)
A method of making a metal composite part by compacting a metal powder composition in a die whose wall surfaces have been electrostatically coated with a lubricant, thereby eliminating or reducing a lubricant in the metal powder composition, resulting in a metal composite having greater density and strength. The method further includes providing an electrostatic charge to the metal powder composition. A powder metallurgy apparatus is also provided. <MATH>
IPC 1-7
IPC 8 full level
B21J 3/00 (2006.01); B22F 3/02 (2006.01); B30B 15/00 (2006.01); C22C 1/04 (2006.01); C22C 33/02 (2006.01)
CPC (source: EP)
B21J 3/00 (2013.01); B22F 3/02 (2013.01); B30B 15/0011 (2013.01); B22F 2003/026 (2013.01)
Citation (applicant)
- US 3846126 A 19741105 - ROGERS H, et al
- US 3988524 A 19761026 - DREYER DENNIS G, et al
- US 4062678 A 19771213 - DREYER DENNIS G, et al
- US 5069714 A 19911203 - GOSSELIN FRANCIS [CA]
- US 6728293 A
- US 6096593 A
Citation (search report)
- [X] FR 2253570 A1 19750704 - OLIVETTI & CO SPA [IT]
- [A] EP 0225803 A1 19870616 - UNIV BATH [GB]
- [A] US 3556255 A 19710119 - LOMAX GEORGE FRANKLIN JR
- [A] US 3871877 A 19750318 - STORCHHEIM SAMUEL
Designated contracting state (EPC)
DE ES GB IT SE
DOCDB simple family (publication)
EP 0698435 A1 19960228; EP 0698435 B1 20000419; CA 2156872 A1 19960225; CA 2156872 C 20050823; DE 69516343 D1 20000525; DE 69516343 T2 20001019; ES 2147583 T3 20000916; JP 3383731 B2 20030304; JP H08100203 A 19960416
DOCDB simple family (application)
EP 95113167 A 19950822; CA 2156872 A 19950824; DE 69516343 T 19950822; ES 95113167 T 19950822; JP 21575895 A 19950824