Method for manufacturing copper alloys

Abstract

The invention relates to a method for manufacturing copper based precipitation hardenable alloys, such as copper-chromium (CuCr), copper-chromium-zirconium (CuCrZr) and copper-zirconium (CuZr), wherein the method contains at least the steps: a) an elongated piece made of the desired alloy and having an essentially circular, rectangular or ring-like cross-section is cast by continuous casting, b) the cast piece is drawn, and c) at least one aging treatment is carried out for the final product.

1 . A method for manufacturing copper based precipitation hardenable alloys, such as copper-chromium (CuCr), copper-chromium-zirconium (CuCrZr) and copper-zirconium (CuZr), wherein the method contains at least the steps: 
 a) an elongated piece made of the desired alloy and having an essentially circular, rectangular or ring-like cross-section is cast by continuous casting,    b) the cast piece is drawn, and    c) at least one aging treatment is carried out for the final product.    
   
   
       2 . A method according to  claim 1 , wherein a solution annealing is carried out before the aging treatment.  
   
   
       3 . A method according to  claim 1 , wherein the melt to be solidified during casting is flowed to the casting machine essentially vertically.  
   
   
       4 . A method according to  claim 3 , wherein the melt to be solidified during casting is flowed to the casting machine essentially vertically upwards.  
   
   
       5 . A method according to  claim 3 , wherein the melt to be solidified during casting is flowed to the casting machine essentially vertically downward.  
   
   
       6 . A method according to  claim 1 , wherein the melt to be solidified during casting is flowed to the casting machine essentially horizontally.  
   
   
       7 . A method according to  claim 1 , wherein the alloy to be cast contains 0.1 to 1.5% by weight chromium.  
   
   
       8 . A method according to, wherein the alloy to be cast contains 0.01 to 0.25% by weight zirconium.  
   
   
       9 . A method according to  claim 1 , wherein the alloy to be cast contains 0.1 to 1.5% by weight chromium and 0.01 to 0.25% by weight zirconium.