Precision alloy

Abstract

A precision alloy for die-casting contains aluminum, silicon and zinc, wherein on the basis of the overall mass, the content of aluminum is 40% by mass or more and 45% by mass or less, and the content of silicon is 2% by mass or more and 8% by mass or less. Also other solving means will be described.

1 . A precision alloy for die-casting containing aluminum, silicon and zinc, wherein
 on the basis of the overall mass, the content of said aluminum is 40% by mass or more and 45% by mass or less, and the content of said silicon is 2% by mass or more and 8% by mass or less.   
   
   
       2 . The precision alloy for die-casting as claimed in  claim 1 , wherein the content of said zinc is 30% by mass or more and 58% by mass or less. 
   
   
       3 . The precision alloy for die-casting as claimed in  claim 1 , wherein the content of said zinc is 30% by mass or more and 57% by mass or less. 
   
   
       4 . The precision alloy for die-casting as claimed in  claim 1 , wherein the content of said zinc is 35% by mass or more and 58% by mass or less. 
   
   
       5 . The precision alloy for die-casting as claimed in  claim 1 , further containing 0.1% by mass or more and 0.2% by mass or less of copper, 0.01% by mass or more and 0.1% by mass or less of magnesium, and inevitable impurities. 
   
   
       6 . The precision alloy for die-casting as claimed in  claim 5 , wherein the content of said zinc is 35% by mass or more and 57.89% by mass or less. 
   
   
       7 . A precision alloy for die-casting comprising 40% by mass or more and 45% by mass or less of aluminum, 2% by mass or more and 8% by mass or less of silicon, and the balance of zinc and inevitable impurities. 
   
   
       8 . A precision alloy for die-casting comprising 40% by mass or more and 45% by mass or less of aluminum, 2% by mass or more and 8% by mass or less of silicon, 0.1% by mass or more and 0.2% by mass or less of copper, 0.01% by mass or more and 0.1% by mass or less of magnesium, and the balance of zinc and inevitable impurities. 
   
   
       9 . A precision alloy die-cast component composed of the precision alloy for die-casting described in  claim 1 . 
   
   
       10 . A method of manufacturing a precision alloy for die-casting comprising:
 obtaining a molten metal containing aluminum, zinc, silicon, copper and magnesium; and   obtaining a precision alloy for die-casting containing, on the basis of the overall mass, 40% by mass or more and 45% by mass or less of aluminum, 30% by mass or more and 57.89% by mass or less of zinc, 2% by mass or more and 8% by mass or less of silicon, 0.1% by mass or more and 0.2% by mass or less of copper, 0.01% by mass or more and 0.1% by mass or less of magnesium, and inevitable impurities.