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  1. #1
    Join Date
    Aug 2006
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    Default Cast Iron & plasma

    Can you plasma cut cast iron or if not .........what? I have to cut the center out of a cast iron floor drain cover.
    Nick
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  2. #2
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    16919 Pole Rd. Brethren, MI 49619
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    Default

    Yes, plasma cuts cast well.

  3. #3
    Join Date
    Nov 2008
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    Default

    I second that... plasma works well on most anything that conducts electricity
    Kelly

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  4. #4
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    Default

    Thanks guys...........Nick
    Nick
    Miller 252 Mig
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    2-O/A outfits
    Jet Lathe and Mill
    Jet 7x12 horz/vert band saw
    DeWalt Multi Cutter metal saw
    Century 50 Amp Plasma Cutter
    20 ton electric/hydraulic vertical press
    Propane Forge
    60" X 60" router/plasma table

    www.youtube.com/watch?v=jTu7wicVCmQ
    Vist my site: www.nixstuff.com
    and check out some of my ironwork and other stuff

  5. #5
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    Default

    Quote Originally Posted by pyro2 View Post
    I second that... plasma works well on most anything that conducts electricity
    I thought I heard one could not plasma cut aluminum.....?????
    Nick
    Miller 252 Mig
    Miller Cricket XL
    Millermatic 150 Mig
    Miller Syncrowave 200 Tig
    2-O/A outfits
    Jet Lathe and Mill
    Jet 7x12 horz/vert band saw
    DeWalt Multi Cutter metal saw
    Century 50 Amp Plasma Cutter
    20 ton electric/hydraulic vertical press
    Propane Forge
    60" X 60" router/plasma table

    www.youtube.com/watch?v=jTu7wicVCmQ
    Vist my site: www.nixstuff.com
    and check out some of my ironwork and other stuff

  6. #6
    Join Date
    Jul 2008
    Location
    Delhi, Ontario:
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    1,971

    Default nfinch86- Canadian Weldor:

    Quote Originally Posted by monte55 View Post
    I thought I heard one could not plasma cut aluminum.....?????
    NOT TRUE!!....... Norm :

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  7. #7
    Join Date
    Mar 2006
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    Chicago-ish
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    Default

    It cuts aluminum great. It's just that raw plasma-cut edges aren't ideal for welding because of the oxides, and the HAZ.

  8. #8
    Join Date
    Nov 2008
    Posts
    12

    Default

    Quote Originally Posted by spotsineyes View Post
    It cuts aluminum great. It's just that raw plasma-cut edges aren't ideal for welding because of the oxides, and the HAZ.
    Could you explain more. I'am thinking about buy a plasma cutter and don't know a alot about them. what do you mean buy "HAZ" I understand the oxides part. I think. This can be cleaned up by a stainless wire brush then welded. thanks daye

  9. #9
    Join Date
    Mar 2006
    Location
    Chicago-ish
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    Default

    Heat Affected Zone. I don't remember what was said in other posts as to how it affects the weld, now that I think about it.
    Last edited by spotsineyes; 11-18-2008 at 07:46 PM.

  10. #10
    Join Date
    Jun 2004
    Location
    nj
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    204

    Default

    HAZ: heat affected zone. The properties of the material are changed in the HAZ in a variety of ways, and depend on the material. Examples include loss of heat treatment, growth of grain structure, loss of toughness or strength (due to the annealing of cold worked material), microscopic cracks....

    For aluminum, loss of heat treatment from heat treated alloys is probably the major issue, same as when laying on weld, but grain growth and cracking can also be an issue with some alloys.

    Clean up before welding with a file, carbide burr, or other mechanical cutting method to remove oxide. Just brushing, or improper grinding, can drive bits of the oxide into the metal surface. The weld heat will USUALLY do more to the mechanical and chemical properties than the heat from plasma cutting.

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