Method for producing cast components for electrical applications

Abstract

In a method for producing cast components for electrical applications, a hardenable aluminum alloy is melted and filled into a die casting mold. The melted aluminum alloy is cooled by the die casting mold that is comprised of a material that has a thermal conductivity causing the melted aluminium alloy to be cooled at a cooling rate of approximately ≧ 5×10 2 K/s. Prior to filling, the melted aluminum alloy is introduced into a fill chamber and the melted aluminum alloy is displaced at a minimal displacement speed within the fill chamber.

What is claimed is: 
     
         1 . A method for producing cast components for electrical applications, the method comprising:
 melting a hardenable aluminum alloy;   filling the melted aluminum alloy into a die casting mold;   cooling the melted aluminum alloy by the die casting mold that is comprised of a material that has a thermal conductivity causing the melted aluminium alloy to be cooled at a cooling rate of approximately ≧5×10 2  K/s.   
     
     
         2 . The method according to  claim 1 , wherein the cooling rate is approximately ≧10 3  K/s. 
     
     
         3 . The method according to  claim 1 , comprising, prior to filling, introducing the melted aluminum alloy into a fill chamber and displacing the melted aluminum alloy at a minimal displacement rate within the fill chamber. 
     
     
         4 . The method according to  claim 3 , wherein the displacement rate is less than approximately 0.5 m/s. 
     
     
         5 . The method according to  claim 3 , wherein in the step of filling the melted aluminium alloy is moved from the fill chamber into the die casting mold at a high speed. 
     
     
         6 . The method according to  claim 5 , wherein the high speed is between approximately 1 m/s and approximately 3 m/s. 
     
     
         7 . The method according to  claim 1 , wherein the melted aluminum alloy after completion of filling of the die casting mold is exposed to overpressure.