Question

Why is oxy-acetylene flame used for welding?

Answer 1

Answer:

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Oxy acetylene flame is used for welding because it produces blue flame which has got high energy and heat.

Explanation:

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Answer 2

Answer:

Oxygen - In the preheat flame, a fuel gas burns in oxygen, generating heat. ... Acetylene is the primary fuel for oxy-fuel welding and is the fuel of choice for repair work and general cutting and welding, Acetylene produces the hottest and most concentrated primary flame of all industrial fuel gases.