Extra large sintering tray crucible

Discussion in 'Other Equipment' started by biodentg, Jun 17, 2017.

  1. biodentg

    biodentg Well-Known Member

    Please I need to buy Urgent a large sintering tray big enough to fit a full upper zr prettau style bridge with cover.
    Reason : Sagemax zr sometimes gets a green shade hue when fired uncovered in my older furnace.
    Zirconia tray is preferred
    Any advice on where to buy is very welcome.
    Thank you
     
  2. cadfan

    cadfan Moderator Staff Member

  3. biodentg

    biodentg Well-Known Member

    Thanks Cadfan, I think the one below will do the job

    Ceramic protection cover L

    Prevents zirconia from discolouration during the sintering process
    (only for Zirkonofen 700)
    Content: 1 piece
    Size: 87 x 75 x 80 mm

    Item number: ZBAA4651

    Does anybody here have this one?
     
  4. biodentg

    biodentg Well-Known Member

    should I compensate increasing temperature/time to sinter using this cover?
     
  5. cadfan

    cadfan Moderator Staff Member

    on big cases yes from 900 up to end temp 2 deg down same and around 3 hours end temp

    0-900 with 8 deg 30 min stop 2 deg to end temp around 3 hours hold down to 900 with 2 deg than with 8 to 250 celsius than open

    zircon is a bad heat conductor at around 900 degrees celsius depends on material it became pasty and tend to distort if not well supported threw a sinter bar and low temperature rise
     
    Last edited: Jun 18, 2017
  6. biodentg

    biodentg Well-Known Member

    Got it cadfan!! Happy Father's Day
     

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