Oxyfuel Gas Welding:

Oxyfuel Gas Welding (OGW) include the combustion of a fuel gas in oxygen. This is an exothermic chemical reaction. This is a subset of fusion welding procedure that develops the heat required to cause melting by the transfer of energy produced during the exothermic chemical reaction.

The combustion of a fuel gas in the existness of oxygen (usually, provided in pure form from a pressurised source) is the basis for oxy fuel welding.  All fuel gases needs oxygen to support combustion, but appropriateness of one over the other based upon

• Flame temperature while burned with pure oxygen,
• Rate of flame propagation,
• Heat content, and
• unnecessary chemical reaction between the flame and base and filler metals. In oxyfuel gas welding combustion of fuel gases occur in two stages.