EP 0248396 B1 19930428 - COMBINED ELECTRON BEAM AND VACUUM ARC MELTING FOR BARRIER TUBE SHELL MATERIAL
Title (en)
COMBINED ELECTRON BEAM AND VACUUM ARC MELTING FOR BARRIER TUBE SHELL MATERIAL
Publication
Application
Priority
US 87118386 A 19860605
Abstract (en)
[origin: EP0248396A2] Process for producing purified zirconium by forming a consumable electrode from a generally virgin sponge of zirconium, melting the consumable electrode in a multiple swept beam electron beam furnace with a feed rate of from 1 to 20 inches per hour and then vacuum arc melting the EB melted material.
IPC 1-7
IPC 8 full level
C22B 9/20 (2006.01); C22B 9/22 (2006.01); C22B 34/14 (2006.01)
CPC (source: EP KR)
C22B 9/20 (2013.01 - EP); C22B 9/228 (2013.01 - EP); C22B 34/14 (2013.01 - EP KR)
Citation (examination)
Winkler et al., VACUUM METALLURGY, 1971, Elsevier, Amsterdam-London-New York; pp. 270, 271, 618, 619, 625, 626#
Designated contracting state (EPC)
DE ES FR IT SE
DOCDB simple family (publication)
EP 0248396 A2 19871209; EP 0248396 A3 19900425; EP 0248396 B1 19930428; DE 3785605 D1 19930603; DE 3785605 T2 19930812; ES 2040712 T3 19931101; KR 880000607 A 19880328
DOCDB simple family (application)
EP 87107945 A 19870602; DE 3785605 T 19870602; ES 87107945 T 19870602; KR 870005720 A 19870605