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  1. #1
    Join Date
    Jul 2014
    Posts
    7

    Default Welding chrome plated steel questions

    New to the forum, tried to find the answers I was looking for but no luck. I've only been in the field about 2 years, and have never welded or witnessed anybody welding chrome plated steel. I'm aware that chrome is poisonous when in gas form, and not to weld it, but people weld it when they grind it down to bare steel. So my question is, how far from the welds should I grind? I'm just doing a small side job, cut open a muffle for a buddy's mustang and gutting out the baffling so it's loud as can be (don't know why he wants that so don't ask). I'd like to keep this as cheap as possible and avoid replating. Only the tip matters appearance wise. And I'm also wondering if a simple dust mask will be ok for me to wear while I'm grinding it off. Whole thing is kinda a quick hack job I've been doing at lunch, and he's ok with that.

  2. #2
    Join Date
    Jul 2014
    Posts
    7

    Default

    Hate to do this, but I still need answers. So bump! I just wanna know do I only grind off chrome where I'm welding or do I go like 2 inches or so from where the bead will be? Then what? Clean with acetone?

  3. #3
    Join Date
    Mar 2009
    Location
    NYC
    Posts
    50

    Default

    Depend if you tig it or mig it, 1/4 it should be enough when comes to chrome grind off, but it might continue peeling off because of heat.
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  4. #4
    Join Date
    Jul 2014
    Posts
    7

    Default

    I'd prefer to mig it, just because I used a cutting wheel to cut the thing open and it's a little rough, so mig would be a little easier, but I have no problem tig welding it, I'm fortunate enough to have a job where I have access to whatever I need. Any recommendations for which process to use and why? Much appreciated!

  5. #5
    Join Date
    Jul 2014
    Posts
    7

  6. #6
    Join Date
    Mar 2009
    Location
    NYC
    Posts
    50

    Default

    That doesn't looks like chrome plated muffler, that seems like stainless steel muffler...
    To be honest I don't know if they even make chrome plated mufflers for the cars...
    You can mig it with stainless steel wire.
    DYNASTY 350 DX
    DYNASTY 200 DX
    MILLERMATIC 251
    1942 MONARCH CK-12 LATHE
    1969 BRIDGEPORT J-2 HEAD MILL
    SCOTCHMAN 350 COLD SAW
    DAKE 200 BENDER
    BEAUMONT METALWORKS KMG BELT GRINDER

  7. #7
    Join Date
    Feb 2009
    Location
    Lodi, CA
    Posts
    1,258

    Default

    I agree, looks like the typical low-grade stainless most automakers are using now, just to meet the legal warranty requirements for exhaust systems today.

    In any case, very few (or none) metallic materials create "instant death" when welding or cutting. It is continuous or long-term exposure that creates problems. If it was "instant death" you'd probably be dead already from cutting it open. Grow a set.
    Obviously, I'm just a hack-artist, you shouldn't be listening to anything I say .....

  8. #8
    Join Date
    Jul 2014
    Posts
    7

    Default

    the "grow a set" comment is much appreciated.... Like I said, I'm new to this type of work, anything we do at work is all new, and nothing automotive, if anything was to be chrome plated it would be plated after we work on it. And no it is not stainless. If it's not chrome plated, it is definitely still some kind of plating that I assume caution would be best with. All the answers so far are much appreciated. I think I have the information I need, but more knowledge is always welcome, thanks guys.

  9. #9
    Join Date
    Jul 2014
    Posts
    7

    Default

    I'm not necessarily right about saying it's plated, but my understanding is that only a few grades of stainless are MILDLY magnetic, and mildly only, I was able to pick it up with a magnet that isn't that strong. So I could be wrong, I suppose if it were ultra cheap stainless it's a possibility it would be more magnetic. So any insight is much appreciated. Haven't tried welding it yet but I guess that will settle things LOL

  10. #10
    Join Date
    Nov 2006
    Location
    Lake of the Ozarks MO
    Posts
    3,554

    Default

    Magnetic doesn't make it cheap. It simply means its a different grade.

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