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Thread: Steel ID

  1. #1
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    Default Steel ID

    Have this pulley from a crankshaft, when I start the arc (tig) it sprays black soot out. It has a small chip next to the key slot. I left the soot on for the pic.

    Kind of like the reaction you get on galvanized parts except back instead of white.
    Machine parameters as they would be on SS. I wire brushed and used acetone.
    Attached Images Attached Images

  2. #2
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    Nov 2003
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    Smile

    Quote Originally Posted by Hardrock40 View Post
    Have this pulley from a crankshaft, when I start the arc (tig) it sprays black soot out. It has a small chip next to the key slot. I left the soot on for the pic.

    Kind of like the reaction you get on galvanized parts except back instead of white.
    Machine parameters as they would be on SS. I wire brushed and used acetone.
    Likely porous cast iron soaked with oil... leaving soot as the oil burns off...

    and not steel at all

    castings can soak up oil like a sponge..

    have you tried to precook it with a torch??

    what type of car? engine model??

    that may give us some cluesas to material..
    Last edited by H80N; 09-18-2013 at 11:25 AM.
    .

    *******************************************
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  3. #3
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    Default

    It looks like a stainless sleeve pressed into the outer gear. If it is a pressed
    fit I didn't want to heat it to much.

    Its really spiting back like it would without gas coverage. Its not necessary to fix it but I have to go fix the crank shaft it came off of also, and if it does the same I wont be able to heat it, its in the car with seals only a couple inches away.

    I think it was said to be an 87 Nissan 300 ZX 3.0 turbo charged,
    Last edited by Hardrock40; 09-18-2013 at 12:10 PM.

  4. #4
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    Still sounds like a Loctite 660 problem to me

    http://www.henkelna.com/industrial/l...2944-12974.htm

    especially with rubber seals an inch or so away...

    you are a braver man than I ... to weld that crank...
    .

    *******************************************
    The more you know, The better you know, How little you know......

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam..

  5. #5
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    Yea that looks pretty good. I sent it to him.

    This thing is gouged out on both sides of the key.

    I seen a pic of it this morning but I don't have the pic. Yea I'm a bit nervous doing something like that. If it does what the above done, there is no way.

    I probably should have put this back in motorsports, sorry.

  6. #6
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    Default

    Quote Originally Posted by Hardrock40 View Post
    Yea that looks pretty good. I sent it to him.

    This thing is gouged out on both sides of the key.

    I seen a pic of it this morning but I don't have the pic. Yea I'm a bit nervous doing something like that. If it does what the above done, there is no way.

    I probably should have put this back in motorsports, sorry.
    Would be a very tough place to try and re-broach that keyway anyway
    .

    *******************************************
    The more you know, The better you know, How little you know......

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam..

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