System and method for reducing hydrogen in a casting

Abstract

A method involves filling a hydrogen-lean molten material in a crucible and closing a lid of the crucible and then feeding a first quantity of a compressed dry gas via the crucible to form a dry gas blanket on a surface of the hydrogen-lean molten material. The method further involves feeding a second quantity of the compressed dry gas to a mold assembly to purge the mold assembly and transferring the hydrogen-lean molten material via an opening of the lid of the crucible to a mold cavity of the mold assembly. The method further involves cooling the hydrogen-lean molten material to form a casting.

1 . A method comprising:
 filling a hydrogen-lean molten material in a crucible and closing a lid of the crucible;   feeding a first quantity of a compressed dry gas via the crucible to form a dry gas blanket on a surface of the hydrogen-lean molten material;   feeding a second quantity of the compressed dry gas to a mold assembly to purge the mold assembly; and   transferring the hydrogen-lean molten material via an opening of the lid of the crucible to a mold cavity of the mold assembly; and   cooling the hydrogen-lean molten material to form a casting.   
     
     
         2 . The method of  claim 1 , wherein the hydrogen-lean molten material comprises a metal. 
     
     
         3 . The method of  claim 1 , wherein the hydrogen-lean molten material comprises a metal alloy. 
     
     
         4 . The method of  claim 1 , wherein the compressed dry gas comprises at least one of argon, air, and nitrogen. 
     
     
         5 . The method of  claim 1 , wherein transferring the hydrogen-lean molten material comprises transferring the hydrogen-lean molten material to the mold cavity of the mold assembly under influence of a counter gravity force. 
     
     
         6 . The method of  claim 5 , further comprising generating the counter gravity force by using a third quantity of the compressed dry gas. 
     
     
         7 . The method of  claim 5 , further comprising generating the counter gravity force by applying a vacuum force. 
     
     
         8 . The method of  claim 1 , wherein transferring the hydrogen-lean molten material comprises transferring the hydrogen-lean molten material to the mold cavity of the mold assembly under influence of a gravity force. 
     
     
         9 . The method of  claim 1 , wherein the casting comprises a low cryogenic magnet coil former. 
     
     
         10 . A system comprising:
 a crucible with a lid, the crucible utilized to store a hydrogen-lean molten material;   a mold assembly comprising a mold cavity, the mold cavity receiving the hydrogen-lean molten material from the crucible and cooling the hydrogen-lean molten material to form a casting; and   a gas source:
 to feed a first quantity of a compressed dry gas via the crucible to form a dry gas blanket on a surface of the molten material; and 
 to feed a second quantity of the compressed dry gas to a mold assembly to purge the mold assembly. 
   
     
     
         11 . The system of  claim 10 , wherein the hydrogen-lean molten material comprises a metal. 
     
     
         12 . The system of  claim 10 , wherein the hydrogen-lean molten material comprises a metal alloy. 
     
     
         13 . The system of  claim 10 , wherein the compressed dry gas comprises at least one of argon, air, and nitrogen. 
     
     
         14 . The system of  claim 10 , wherein the crucible is configured to transfer the hydrogen-lean molten material to the mold cavity of the mold assembly under influence of a counter gravity force. 
     
     
         15 . The system of  claim 14 , wherein the gas source is configured to generate the counter gravity force by using a third quantity of the compressed dry gas. 
     
     
         16 . The system of  claim 14 , further comprising a vacuum source to apply a vacuum force to generate the counter gravity force. 
     
     
         17 . The system of  claim 10 , wherein the crucible is configured to transfer the hydrogen-lean molten material to the mold cavity of the mold assembly under influence of a gravity force. 
     
     
         18 . The system of  claim 10 , wherein the casting comprises a low cryogenic magnet coil former.