EP 0275228 B1 19921216 - PROCESS AND DEVICE FOR MELTING AND CONTINUOUSLY CASTING METALS
Title (en)
PROCESS AND DEVICE FOR MELTING AND CONTINUOUSLY CASTING METALS
Publication
Application
Priority
FR 8700814 A 19870115
Abstract (en)
[origin: US4838933A] Apparatus for melting and continuously casting metals, comprising a vertical, conductive cold crucible (1) with at least part of the height of its wall in the form of longitudinal sectors (2) which are electrically insulated from one another and have a cooling fluid running through them; an inductor (6) with coils helically surrounding the crucible (1) over part of its height and supplied with alternating current both for heating and confining the metal; a system for drawing down the ingot; and possibly a chamber with a controlled external atmosphere, separating at least the contents of the crucible (1) from the external atmosphere, characterized in that the crucible (1) has an upper zone (4) divided into sectors, with parallel vertical generating lines, and a lower zone (5) divided into sectors and joined to the upper zone (4), the generating lines of the lower zone spreading apart in a downward direction from the join (45) between the two zones (4 and (5), and that the lowest coil (60) of the inductor (6) is at the level of that join (45). The apparatus of the invention is advantageously used for melting and casting refractory metals and other materials.
IPC 1-7
IPC 8 full level
B22D 11/10 (2006.01); B22D 11/04 (2006.01); B22D 11/041 (2006.01); B22D 11/115 (2006.01); B22D 23/06 (2006.01); H05B 6/22 (2006.01)
CPC (source: EP KR US)
B22D 11/04 (2013.01 - KR); B22D 11/10 (2013.01 - KR); B22D 23/06 (2013.01 - EP US); H05B 6/22 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES GB IT LI NL SE
DOCDB simple family (publication)
EP 0275228 A1 19880720; EP 0275228 B1 19921216; AT E83597 T1 19930115; CA 1326752 C 19940208; DE 3876638 D1 19930128; DE 3876638 T2 19930624; ES 2036275 T3 19930516; FR 2609655 A1 19880722; FR 2609655 B1 19890324; JP H0258022 B2 19901206; JP S63192543 A 19880809; KR 880008848 A 19880913; KR 910007297 B1 19910924; NO 169877 B 19920511; NO 169877 C 19920819; NO 880149 D0 19880114; NO 880149 L 19880718; US 4838933 A 19890613
DOCDB simple family (application)
EP 88420010 A 19880113; AT 88420010 T 19880113; CA 556532 A 19880114; DE 3876638 T 19880113; ES 88420010 T 19880113; FR 8700814 A 19870115; JP 673588 A 19880114; KR 880000242 A 19880115; NO 880149 A 19880114; US 14220588 A 19880111