Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 6 of 6
  1. #1
    Join Date
    May 2013
    Location
    Toogoolawah, Queensland
    Age
    66
    Posts
    44

    Default A Question About Pouring Cast Iron

    Screenshot.jpgOver on the woodwork forum, someone recently posted links to Matthias Burger's Youtube Channel. The subject of most of his videos is traditional 15th Century Wood Framed House renovation woodworking and renovating and using late 1800s and early 1900s woodworking machinery.

    However, two of his videos address making a wooden casting die, and then pouring some cast iron wheels. The following is the link to the "Casting an Iron Wheel" video.

    So - now the question. At the 7 minute 56 second point in the Casting an Iron Wheel video, just as the liquid cast iron is poured from the furnace into a big ladle, the ladle operator tips a cup of something into the liquid cast iron mix. The image at left is taken from that moment in the video. Does anyone know what would have been added at that point, and why ?

    Thanks,

    RoyG

  2. #2
    Join Date
    Dec 2005
    Location
    Canberra
    Posts
    490

    Default

    I would presume limestone, to help separate the slag off the top.

  3. #3
    Join Date
    May 2008
    Location
    Perth
    Posts
    241

    Default

    Could it be bicarb soda (or similar) for degassing purposes?

  4. #4
    Join Date
    Sep 2008
    Location
    texas, queensland
    Posts
    248

    Default

    ferrosilicon would be my guess
    'If the enemy is in range, so are you.'

  5. #5
    Join Date
    Feb 2009
    Location
    Adelaide - outer south
    Age
    67
    Posts
    18

    Default

    A late reply I know but I've only just stumbled on to this forum.

    Texx is right, it would be ferrosilicon or a proprietary inoculant based on ferrosilicon.

    The late addition of a small quantity helps provide extra seeding sites that refine the structure and help reduce the likelihood of carbides in faster cooling areas like thin section/external corners. It's been a while since being involved with such things but I think the addition rate was somewhere in the order of 0.05 - 0.1 % of the metal weight.

    Tipping it into the stream coming out of the furnace is the preferred method of addition to assist even distribution.
    Cheers, Bob the labrat

    Measure once and.... the phone rings!

  6. #6
    Join Date
    Feb 2012
    Location
    Northern NSW
    Posts
    1

    Default

    Quote Originally Posted by labr@ View Post
    A late reply I know but I've only just stumbled on to this forum.

    Texx is right, it would be ferrosilicon or a proprietary inoculant based on ferrosilicon.

    The late addition of a small quantity helps provide extra seeding sites that refine the structure and help reduce the likelihood of carbides in faster cooling areas like thin section/external corners. It's been a while since being involved with such things but I think the addition rate was somewhere in the order of 0.05 - 0.1 % of the metal weight.

    Tipping it into the stream coming out of the furnace is the preferred method of addition to assist even distribution.
    I'd recommend going to YouTube and looking for videos by LuckyGen 1001 .Excellent stuff with lots on melting cast iron and furnace building.

Similar Threads

  1. Replies: 8
    Last Post: 19th Jun 2013, 06:32 PM
  2. Cast iron VS Cast steel lathe compound slide
    By Ueee in forum METALWORK GENERAL
    Replies: 10
    Last Post: 23rd Dec 2012, 11:40 PM
  3. Cast Iron
    By RayG in forum METALWORK GENERAL
    Replies: 17
    Last Post: 30th Apr 2011, 02:27 PM
  4. Milling Cast Iron
    By BurnMark_SandIt in forum METALWORK GENERAL
    Replies: 5
    Last Post: 22nd May 2008, 11:52 AM
  5. hard cast iron
    By hazard in forum WELDING
    Replies: 1
    Last Post: 23rd Oct 2007, 11:02 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •