EP 0092844 A1 19831102 - Method and apparatus for feeding and continuously casting molten metal with inert gas applied to the moving mold surfaces and to the entering metal.
Title (en)
Method and apparatus for feeding and continuously casting molten metal with inert gas applied to the moving mold surfaces and to the entering metal.
Title (de)
Verfahren und Einrichtung für das Beschicken und kontinuierliche Giessen von geschmolzenem Metall mit inertem Gas, angewandt auf bewegende Formoberflächen und auf das eintretende Metall.
Title (fr)
Procédé et installation pour l'alimentation et la coulée continue de métal liquide avec application d'un gaz inerte aux surfaces mobiles de moulage et au métal entrant.
Publication
Application
Priority
US 37245982 A 19820428
Abstract (en)
Methods and apparatus for feeding and continuously casting molten metal (1) are described in which inert gas is applied to the moving mold surfaces and to the entering metal for the protection or shrouding of the molten metal surface within the mold cavity from oxygen and other detrimental atmospheric gases. The shrouding is by means of inert gas injected into the mold through a semi-sealing nosepiece (7), or directed at the mold cavity and passing through the necessary slight gaps around the nosepiece. At the same time, such inert gas is further circulated by channeling or shielding the circulated gas for blanketing and diffusing of the inert gas along the moving mold surfaces (9, 10) for cleansing them of undesired accompanying gases, such as atmospheric oxygen, water vapor, sulphur dioxide, carbonic acid gas, etc. as the mold surfaces approach the nosepiece before entering the mold region. In installations where the inert gas is directed at the mold cavity from above and/or below the nosepiece, the gas is ejected at a relatively slow flow rate so as to be noiselessly ejected, i.e. without audible disturbance, the objective being to avoid entrainment of air. Heavier-than-air inert gas may advantageously be used above the nosepiece, while lighter-than-air inert gas is simultaneously used below it.
IPC 1-7
IPC 8 full level
B22D 11/06 (2006.01); B22D 11/10 (2006.01); B22D 27/00 (2006.01)
CPC (source: EP KR)
B22D 11/06 (2013.01 - KR); B22D 11/0642 (2013.01 - EP)
Citation (search report)
- [A] DE 2840699 A1 19790405 - AIR LIQUIDE
- [A] DE 2655912 A1 19780615 - LINDE AG
- [A] US 4062397 A 19771213 - CASHDOLLAR SR ROBERT E
- [AP] FR 2504036 A1 19821022 - HAZELETT STRIP CASTING CORP [US]
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0092844 A1 19831102; EP 0092844 B1 19870128; AT E25210 T1 19870215; AU 1402383 A 19831103; AU 561611 B2 19870514; BR 8302178 A 19831227; CA 1208412 A 19860729; DE 3369474 D1 19870305; JP H0573505 B2 19931014; JP S5942164 A 19840308; KR 840004376 A 19841015; KR 910006550 B1 19910828; NO 161246 B 19890417; NO 161246 C 19890726; NO 831496 L 19831031; ZA 832935 B 19840125
DOCDB simple family (application)
EP 83104073 A 19830426; AT 83104073 T 19830426; AU 1402383 A 19830428; BR 8302178 A 19830427; CA 426690 A 19830426; DE 3369474 T 19830426; JP 7602983 A 19830428; KR 830001813 A 19830428; NO 831496 A 19830427; ZA 832935 A 19830426