Shell temperature just prior to pouring?

Discussion in 'Investment casting Ceramic shell method' started by John Gaertner, Mar 22, 2022.

  1. John Gaertner

    John Gaertner Silver

    Hello Forum,

    Is there a standard temperature one's investment shells should be prior to pouring with aluminum? I have a handful of suspend-a-slurry shells I made. Their burn out went fine but I could not do the casting at the time, the burn out was done. So now I plan on reheating them in my electric burn out oven, prior to pouring. In the past I have used a temperature 1/2 of the metal I was pouring so roughly 700 F for aluminum.

    What are other people using. I am going to place the shells in large tin cans filled with sand to keep them still and not cool too fast.

    Jgaertner
     
  2. Ferrisbeu

    Ferrisbeu Silver

    I pour brass and copper coins. my shells are 1400-1600f. Come out beautiful
     

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