Zinc alloy and manufacturing method thereof

Abstract

The present application relates to a zinc alloy and a manufacturing method thereof. The zinc alloy of the present application contains Al at an amount of 3.5-4.3 wt % and Mg at an amount of 0.005-0.018 wt %, and the rest of the alloy is Zn and unavoidable impurities. The alloy has excellent crack resistance, high casting yield, excellent polishing and electroplating properties, and can meet the high surface quality requirements of castings. It is suitable for die-casting production of components of plumbing and sanitary ware, hardware accessories, electronic appliances, toys and the like.

1 . A zinc alloy, wherein the zinc alloy contains Al at an amount of 3.5-4.3 wt % and Mg at an amount of 0.005-0.018 wt %, and a remainder of the alloy is Zn and unavoidable impurities. 
     
     
         2 . The zinc alloy according to  claim 1 , wherein the amount of Al in the zinc alloy is 3.7 to 4.2 wt %. 
     
     
         3 . The zinc alloy according to  claim 1 , wherein the amount of Al in the zinc alloy is 3.9-4.1 wt %. 
     
     
         4 . The zinc alloy according to  claim 1 , wherein the amount of Mg in the zinc alloy is 0.005-0.015 wt %. 
     
     
         5 . The zinc alloy according to  claim 2 , wherein the amount of Mg in the zinc alloy is 0.005-0.015 wt %. 
     
     
         6 . The zinc alloy according to  claim 3 , wherein the amount of Mg in the zinc alloy is 0.005-0.015 wt %. 
     
     
         7 . The zinc alloy according to  claim 1 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy. 
     
     
         8 . The zinc alloy according to  claim 2 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy. 
     
     
         9 . The zinc alloy according to  claim 3 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy. 
     
     
         10 . The zinc alloy according to  claim 4 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy. 
     
     
         11 . The zinc alloy according to  claim 1 , wherein the amount of Cu in the zinc alloy is 0.5-1.0 wt %. 
     
     
         12 . The zinc alloy according to  claim 2 , wherein the amount of Cu in the zinc alloy is 0.5-1.0 wt %. 
     
     
         13 . The zinc alloy according to  claim 3 , wherein the amount of Cu in the zinc alloy is 0.5-1.0 wt %. 
     
     
         14 . The zinc alloy according to  claim 4 , wherein the amount of Cu in the zinc alloy is 0.5-1.0 wt %. 
     
     
         15 . The zinc alloy according to  claim 5 , wherein the amount of Cu in the zinc alloy is 0.5-1.0 wt %. 
     
     
         16 . The zinc alloy according to  claim 1 , wherein the alloy does not contain Zr, Sb, Cr, Mn, Ti, Bi, Se, Ni and the like, except that these elements are present as impurities in the zinc alloy each with an amount of less than 0.001 wt %. 
     
     
         17 - 19 . (canceled)