Electric Furnace for Cast Iron

Discussion in 'Furnaces and their construction' started by Dazz, Jan 13, 2020.

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  1. OMM

    OMM Silver

    These are two totally different animals. A 4 kW Vfd powering a five horse power or smaller lathe as variable current. Not constant as seen in a heater.

    I'm guessing... You probably have this lathe on a 20 or 30 amp circuit?

    What is your entrance main panel breaker??? 125, 200?
     
    Last edited: Jan 16, 2020
    OMM, Jan 16, 2020
    #21
  2. Mark's castings

    Mark's castings Gold

    If Dazz is in New Zealand then he'd have 240V single phase and 415V three phase so the currents required would be lower than the USA's 115/230V single phase circuits. I'm in Australia so it's 415V three phase and I opted for 80 Amps in case I ever did pick up a small cheap second hand induction furnace.
     
    Mark's castings, Jan 16, 2020
    #22
  3. Al2O3

    Al2O3 Administrator Staff Member Banner Member

    OK, I think the feedback you've received so far addresses your opening post, and moreover, when it comes to feasibility, there are numerous considerations beyond electrical power and operating temperature when it comes to the viability of SiC or MoSi2 heating elements in a foundry furnace service.

    Best,
    Kelly
     
    Al2O3, Jan 16, 2020
    #23
  4. Dazz

    Dazz Copper

    I agree. Thanks for all of the input.

    Dazz
     
    Dazz, Jan 16, 2020
    #24
  5. Robert

    Robert Silver

    Very interesting guys. I wonder how they hook up the electrical connections to the SiC or other ceramic elements? Can't use copper wire! Do you need special high temp wire? Like what? Tungsten?
    Robert
     
    Robert, Jan 27, 2020
    #25
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