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  1. #1
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    why we are doing soldering for copper wire not for iron..

    i have little confusion ..
    why we are doing soldering for the copper cable and copper wires ,,, why we doing welding for the iron materials ...
    is soldering possible for iron materials joining? if not why ..

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  2. #2
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    Re: why we are doing soldering for copper wire not for iron..

    Yes, soldering is possible for iron too. You will need a more acidic flux. Galvanized iron is easiest to solder with common tools.

    We do welding when we need a stronger joint. Solder is a soft material and does not provide mechanical strength. Welding has many advantages.



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  3. #3
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    Re: why we are doing soldering for copper wire not for iron..

    I have decent luck with regular 60/40 rosin core
    solder on steel, provided the metal is made clean
    and bright (equally true of copper).

    Silver solder can give you decent joint strength
    (not as good as welding, but decent). Knife makers
    often use silver solder (silver braze) to join pieces
    at temperatures that won't ruin blade metallurgy.

    Copper is too soft and too low a resistance to be
    nicely arc (stick, MIG) weldable, and it's difficult to
    do with acetylene as the copper melt makes the flame
    "pop" in my experience. TIG could be an option.
    There are refrigeration gas welding rods (copper alloy)
    which allow a sort of brazing operation.



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