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  1. Most of the oxyacetylene welding is done with

    2. A.

     Neutral flame
    B.

     Oxidizing flame
    C.

     Carburising flame
    D.

     All of these

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    Workspace

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    Answer : Option A

    Explanation :

    The neutral flame is the flame in which the amount of oxygen is precisely enough for burning, and neither oxidation nor reduction occurs. A flame with a good balance of oxygen is clear blue. The reducing and neutral flames are useful in soldering and annealing.

    Neutral Welding Flame. The neutral flame has a one-to-one ratio of acetylene and oxygen. It obtains additional oxygen from the air and provides complete combustion. It is generally preferred for welding.

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