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Asked by 733bmay26 to Peter, Jonathan, Grace, Doris, David, Ann on 7 Jun 2019.
Question: why is is oxygen used in welding and yet is a gas?
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Grace Kago answered on 7 Jun 2019:
because it helps the fire burn hotter, making the welding torch more efficient.
oxygen itself isn’t the fuel.. it is combined with the fuel to produce the high heat.
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