Casting Method and Casting System for Aluminium or Aluminium Alloys

Abstract

In a casting method, or a casting system for aluminum, or aluminum alloys, aluminum melt is filled into a plurality of pans ( 15, 15′ ). Said pans ( 15, 15′ ) are used for treatment, if needed, and delivered to a casting station ( 20 ), in which they are subsequently emptied, and the melt is casted into semi-finished products. At least two filled pans ( 15, 15′ ) are provided in order to ensure a continuous casting operation in the casting station ( 20 ), the melt of at least one of which is drained into a mutual inflow channel ( 27 ).

1 . A casting method for aluminium or aluminium alloys wherein aluminium melt is filled into a plurality of ladles ( 15 ,  15 ′), if necessary is treated in the latter, and is delivered to a casting station ( 20 ) in which the ladles ( 15 ,  15 ′) are emptied, and the melt is cast into semi-finished products, characterised in that in order to ensure a continuous casting operation at least two filled ladles ( 15 ,  15 ′) can be provided at the casting station ( 20 ), the melt of one of which respectively is emptied into a mutual inflow channel ( 27 ). 
   
   
       2 . The casting method according to  claim 1 , characterised in that the consecutive emptying of the ladles ( 15 ,  15 ′) provided takes place with controllable opening of their slide closures ( 25 ). 
   
   
       3 . The casting method according to  claim 1 , characterised in that the treatment of the aluminium melt takes place in the ladle ( 15 ′) or ladles provided at the casting station ( 20 ) and not yet subjected to emptying. 
   
   
       4 . The casting method according to  claim 3 , characterised in that alloy additions are added to the aluminium melt in the ladle ( 15 ′) or ladles provided at the casting station ( 20 ) and not yet subjected to emptying, or cleaning and homogenisation and if necessary temperature regulation is implemented. 
   
   
       5 . The casting method according to  claim 4 , characterised in that a fan wheel for injecting argon or nitrogen can be immersed into the ladle ( 15 ′) or ladles provided at the casting station ( 20 ) and not yet subjected to emptying for the combined elimination of hydrogen, homogenisation and if necessary heat regulation, it also being possible to additionally mix small quantities of chlorine into the cleaning gas in order to eliminate any alkaline traces of contamination. 
   
   
       6 . A casting system for implementation of the method according to  claim 1 , with a plurality of ladles ( 15 ,  15 ′) which can be filled with the aluminium melt at a first filling station ( 11 ) and which can be conveyed to a casting station ( 20 ) and can be emptied at the latter by opening their slide opening ( 25 ), means being provided for any treatment of the aluminium melt before casting, characterised in that at least two filled ladles ( 15 ,  15 ′) can be positioned at the casting station ( 20 ), one of which can respectively be emptied into a mutual inflow channel ( 27 ). 
   
   
       7 . The casting system according to  claim 6 , characterised in that the means for any treatment of the aluminium melt are assigned to the ladles ( 15 ,  15 ′) that can be positioned at the casting station ( 20 ). 
   
   
       8 . The casting system according to  claim 6 , characterised in that rails or cranes are provided for conveying the ladles ( 15 ,  15 ′) from the filling station ( 11 ) to the casting station ( 20 ). 
   
   
       9 . The casting system according to  claim 7 , characterised in that rails or cranes are provided for conveying the ladles ( 15 ,  15 ′) from the filling station ( 11 ) to the casting station ( 20 ). 
   
   
       10 . The casting method according to  claim 2 , characterised in that the treatment of the aluminium melt takes place in the ladle ( 15 ′) or ladles provided at the casting station ( 20 ) and not yet subjected to emptying. 
   
   
       11 . The casting method according to  claim 10 , characterised in that alloy additions are added to the aluminium melt in the ladle ( 15 ′) or ladles provided at the casting station ( 20 ) and not yet subjected to emptying, or cleaning and homogenisation and if necessary temperature regulation is implemented. 
   
   
       12 . The casting method according to  claim 11 , characterised in that a fan wheel for injecting argon or nitrogen can be immersed into the ladle ( 15 ′) or ladles provided at the casting station ( 20 ) and not yet subjected to emptying for the combined elimination of hydrogen, homogenisation and if necessary heat regulation, it also being possible to additionally mix small quantities of chlorine into the cleaning gas in order to eliminate any alkaline traces of contamination.