Method and system for continuously casting copper alloys

Abstract

This inventinn is related to a method and a system for continuously csst copper alloys with high affinity for carbon, where the casting die is at least partly made of, or at least partly covered with, material resistant to copper alloy to be cast and the flux cover is made of material resistant to copper alloy to be cast.

1 . Method for casting copper alloys with high affinity for carbon, comprising the steps of: 
 selecting die material resistant to copper alloy to be cast and    selecting flux cover material resistant to copper alloy to be cast.    
   
   
       2 . Method awarding to  claim 1 , further comprising coating a die at least partly with said material resistant to copper alloy to be cast.  
   
   
       3 . Method according to  claim 1 , further comprising coating a whole die with said material resistant to copper alloy to be cast.  
   
   
       4 . Method according to  claim 1 , further comprising making a die at least partly from the material resistant to copper alloy to be cast.  
   
   
       5 . Method according to  claim 1 , further comprising making a whole die from the material resistant to copper alloy to be cast.  
   
   
       6 . Method according to  claim 1 , wherein the die material is selected from the group consisting of boron nitrate (BN), boron nitrate doped with zirconium oxide (BN+ZrO 2 ), zirconium oxide (ZrO 2 ), and doped zirconium oxides (ZrO 2 Me, where Me is selected from the group consisting of Ba, Ca, and Sr).  
   
   
       7 . Method according to  claim 1 , wherein the die material is selected from 3one2 ceramic materials represented by the formula M n+1 +AX n , where M is an early transition metal, A is an element from the A groups X is either nitrogen or carbon and n is 1, 2 or 3.  
   
   
       8 . Method according to  claim 1 , wherein the die material is selected from the group consisting of yttrium stabilized zirconium, and magnesium partially stabilized zirconium.  
   
   
       9 . Method according to  claim 1 , wherein the die material is aluminum nitride (AlN).  
   
   
       10 . Method according to any one of  claims 1  to  5 , wherein the die material is a ceramic composite.  
   
   
       11 . Method according to  claim 1 , wherein the flux cover material is selected from the group consisting of BaCl 2 , CaCl 2 , and SrCl 2 .  
   
   
       12 . A system for continuously cast copper alloys with high affinity for carbon comprising a casting die and flux cover where the casting die is at least partly made of, or at least partly covered with, material resistant to copper alloy to be cast and the flux cover is made of material resistant to copper alloy to be cast.  
   
   
       13 . A system according to  claim 12 , wherein the casting die material is selected from ceramics, 3one2 ceramics, ceramic composites, stabilized composites or aluminum nitride (AIN).  
   
   
       14 . A system according to  claim 13 , wherein the ceramics are selected from the group consisting of boron nitrate (BN), boron nitrate doped with zirconium oxide (BN+ZrO 2 ), zirconium oxide (ZrO 2 ), and doped zirconium oxides (ZrO 2 Me. where Me is selected from the group consisting of Ba, Ca, and Sr).  
   
   
       15 . A system according to  claim 13 , wherein the 3one2 ceramics are materials represented by the formula M n+1 +AX n , where M is an early transition metal, A is an element from the A groups, X is either nitrogen or carbon and n is 1, 2 or 3.  
   
   
       16 . A system according to  claim 13 , wherein the stabilized composites are selected from the group consisting of yttrium stabilized zirconium and magnesium partially stabilized zirconium.  
   
   
       17 . A system according to  claim 12 , wherein the flux cover material is selected from the group consisting of chloride based salt.  
   
   
       18 . Method according to  claim 7 , wherein A is an element from groups IIIA or IVA.  
   
   
       19 . Method according to  claim 15 , wherein A is an element from groups IIIA or IVA.  
   
   
       20 . System according to  claim 17 , wherein the chloride based salt is selected from BaCl 2 , CaCl 2 , and SrCl 2 .