Nickel magnesium wire injection system and method thereof

Abstract

A method is provided of treating liquid iron in a pour furnace includes providing the pour furnace with a body, an inlet for receiving liquid iron, an outlet for dispensing liquid iron, and an access opening located in the body and remote from the outlet. The method also includes suspending a platform over the pour furnace and in alignment with the access opening, injecting a cored wire containing nickel magnesium through the access opening into an interior of the body of the furnace, and reacting the nickel magnesium with the liquid iron in the body of the furnace. The method further includes treating the liquid iron with the magnesium to increase its ductility and strength.

1 . A method of producing ductile liquid iron, comprising:
 melting scrap metal in a melt furnace to produce liquid iron;   forming ductile liquid iron with an alloy;   adding the ductile liquid iron to a pour furnace having a body, an inlet for receiving the ductile liquid iron, an outlet for dispensing the ductile liquid iron, and an access opening located in the body and remote from the outlet;   checking a quality of the ductile liquid iron by comparing a magnesium content of the ductile liquid iron to a threshold;   rejecting the ductile liquid iron if the magnesium content does not satisfy the threshold;   positioning a portable injection system above the pour furnace and in alignment with the access opening;   injecting a cored wire containing nickel magnesium through the access opening into an interior of the body of the furnace;   reacting the nickel magnesium with the liquid iron in the body of the furnace; and   increasing the magnesium content in the ductile liquid iron.   
     
     
         2 . The method of  claim 1 , further comprising rechecking the quality of the ductile liquid iron after the reacting step by comparing the magnesium content to the threshold. 
     
     
         3 . The method of  claim 2 , further comprising pouring the ductile liquid iron from the outlet into a cast mold after the rechecking step if the magnesium content satisfies the threshold. 
     
     
         4 . The method of  claim 1 , further comprising pressurizing the interior of the body with an inert gas. 
     
     
         5 . The method of  claim 4 , further comprising forcing the ductile liquid iron from a bottom portion of the furnace to flow towards the outlet when the interior is pressurized with the inert gas. 
     
     
         6 . The method of  claim 1 , wherein the reacting step comprises reacting the liquid iron with the nickel magnesium at a bottom portion of the body of the furnace. 
     
     
         7 . The method of  claim 1 , wherein the injecting step comprises feeding the cored wire into the body of the furnace at a feed rate such that the cored wire reaches a bottom portion of the body before the reacting step. 
     
     
         8 . The method of  claim 1 , wherein the reacting step occurs before the cored wire contacts a bottom wall of the furnace.