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Low Hydrogen/chrome Moly

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  • ASKANDY
    replied
    10-4

    Stick is a hotter weld and could distort more than a controled TIG arc. With stick, your arc volts are around 30-35V at around 250A or more. This gives you about 9000watts of power. With TIG your arc volts are closer to 10V at 200 - 250A so that gives you only 2500 watts. A slower heat build up would less likely warp the material.

    Hope this helps

    A

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  • David Boles
    replied
    Larry,
    If this were mine , I wouid stick with the TIG process.
    Some preheating of the 1/4" wall chrome moly tube would also be good.
    Not sure about the distortion , but I suspect there would more distortion with the stick process with the more repid heat buildup. Good Luck !

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  • imported_larry
    started a topic Low Hydrogen/chrome Moly

    Low Hydrogen/chrome Moly

    WHAT WOULD BE THE WELD INTEGRITY IF USING LH7018 STICK ELECTRODE TO ASSEMBLE A TUBULAR FRONT END ASSEMBLY WHICH HAS 1/4 WALL 4130, 1/4 WALL DOM AND 1018 MACHINED LUGS. WILL THIS CAUSE A SIGNIFICANT INCREASE IN DISTORTION VERSUS USING TIG WITH 70-2 FILLER? I WOULD LIKE TO USE THE 7018 TO GET A FASTER BEAD FILL THAN TIG.
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