Cast forging process for aluminum wheels

Abstract

A cast forging method of manufacturing a disc for a wheel. The method may include the steps of producing a cast disc by low pressure casting, heating the cast disc to its material plasticity temperature, and placing the heated cast disc into a forging mold to forge the disc under high pressure. The method may further include the steps of inspecting the forged disc for defects, and machining the forged disc to the required end-product specifications.

1 . A cast forging method of manufacturing a disc for a wheel, said method comprising: 
 producing a cast disc by low pressure casting;    heating said cast disc to its material plasticity temperature;    placing said heated cast disc into a forging mold to forge said disc under high pressure to produce a forged disc;    inspecting said forged disc for defects; and    machining said forged disc.    
   
   
       2 . A method according to  claim 1 , wherein said high pressure compressing said heated cast disc from approximately 5-20 mm.  
   
   
       3 . A method according to  claim 1 , wherein said low pressure including pressure of approximately 0.1-1 mpa, and said high pressure including pressure of approximately 500 mpa.  
   
   
       4 . A method according to  claim 1 , wherein said inspection being performed by fluoroscopy.  
   
   
       5 . A method according to  claim 1 , wherein said machining including machining of assembly fitments.  
   
   
       6 . A method according to  claim 1 , further comprising attaching said machined disc to a rim to form the wheel.  
   
   
       7 . A method according to  claim 6 , wherein said machined disc being attached to said rim by one of bolts and welding.  
   
   
       8 . A method according to  claim 1 , wherein said disc being formed of an aluminum composition.  
   
   
       9 . A method according to  claim 8 , wherein said aluminum composition including elements having the following ratio: Si—approximately 6.58%, Mg—approximately 0.3%, Ti—approximately 0.2%, Sr—approximately 0.18%, L—approximately 0.2%, C—approximately 0.2%, Fe—approximately 0.16%, Al—Remainder.  
   
   
       10 . A wheel disc formed by the method of  claim 1 .  
   
   
       11 . A cast forging method of manufacturing a disc for a wheel, said method comprising: 
 producing a cast disc by low pressure casting;    heating said cast disc to its material plasticity temperature; and    placing said heated cast disc into a forging mold to forge said disc under high pressure to produce a forged disc.    
   
   
       12 . A method according to  claim 11 , further comprising: 
 inspecting said forged disc for defects; and    machining said forged disc.    
   
   
       13 . A method according to  claim 11 , wherein said high pressure compressing said heated cast disc from approximately 5-20 mm.  
   
   
       14 . A method according to  claim 11 , wherein said low pressure including pressure of approximately 0.1-1 mpa, and said high pressure including pressure of approximately 500 mpa.  
   
   
       15 . A method according to  claim 12 , wherein said inspection being performed by fluoroscopy.  
   
   
       16 . A method according to  claim 12 , wherein said machining including machining of assembly fitments.  
   
   
       17 . A method according to  claim 12 , further comprising attaching said machined disc to a rim to form the wheel.  
   
   
       18 . A method according to  claim 17 , wherein said machined disc being attached to said rim by one of bolts and welding.  
   
   
       19 . A method according to  claim 11 , wherein said disc being formed of an aluminum composition.  
   
   
       20 . A method according to  claim 19 , wherein said aluminum composition including elements having the following ratio: Si—approximately 6.58%, Mg—approximately 0.3%, Ti—approximately 0.2%, Sr—approximately 0.18%, L—approximately 0.2%, C—approximately 0.2%, Fe—approximately 0.16%, Al—Remainder.