EP 0403406 B1 19940316 - Process and apparatus for degassing and maintaining a low hydrogen content in molten aluminium alloys during transport in ladles.
Title (en)
Process and apparatus for degassing and maintaining a low hydrogen content in molten aluminium alloys during transport in ladles.
Title (de)
Verfahren und Anlage zum Entgasen und Aufrechterhalten eines niedrigen Wasserstoffgehaltes in legierten Aluminiumschmelzen während des Pfannentransportes.
Title (fr)
Procédé et dispositif de dégazage et de maintien d'une faible teneur en hydrogène dans les alliages d'aluminium liquides au cours de leur transport dans des poches.
Publication
Application
Priority
FR 8908731 A 19890613
Abstract (en)
[origin: EP0403406A1] Process and apparatus for degassing and maintaining a low hydrogen content in liquid aluminium alloys during their transport in ladles. The process is characterised in that a stream of gases which are inert towards aluminium is circulated in the ladle at a low and controlled flow rate and the said gas(es) is (are) then removed from the ladle. The apparatus consists of at least one ladle (1) and at least one bottle (4) containing a gas under pressure, these being joined together by a circuit (5) comprising a pressure reducer (6), a flow- meter (7) and a gas injection system, the said ladle being equipped in its upper part with a controlled gas leakage system. This invention makes it possible to reduce and avoid the gassing of metal during its transport and to provide the users with an aluminium alloy which is suitable for moulding articles which are metallurgically healthy. <IMAGE>
IPC 1-7
IPC 8 full level
B65D 88/74 (2006.01); C22B 21/06 (2006.01)
CPC (source: EP)
C22B 21/064 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI
DOCDB simple family (publication)
EP 0403406 A1 19901219; EP 0403406 B1 19940316; AT E103012 T1 19940415; AU 5697790 A 19901220; AU 626425 B2 19920730; CA 2018491 A1 19901213; CA 2018491 C 19981117; DE 69007343 D1 19940421; DE 69007343 T2 19940623; ES 2050411 T3 19940516; FR 2648154 A1 19901214; FR 2648154 B1 19920619; IE 67886 B1 19960501; IE 902105 A1 19910102; IE 902105 L 19901213
DOCDB simple family (application)
EP 90420277 A 19900611; AT 90420277 T 19900611; AU 5697790 A 19900612; CA 2018491 A 19900607; DE 69007343 T 19900611; ES 90420277 T 19900611; FR 8908731 A 19890613; IE 210590 A 19900612