Air Acetylene Gas Welding process / Oxy-Acetylene gas welding process / Gas Welding / Bunsen Burner Principle
In the Air acetylene gas welding process, about the total oxygen required for complete combustion of acetylene gas is obtained only from the atmospheric air.
Because total oxygen is taken from the air only, the principle of burning of gas is called the Bunsen Burner Principle.
Because total oxygen is taken from the atmospheric air, the flame has to travel for longer distances to complete combustion. Therefore, heat loss by convection radiation is very high. Due to this, the maximum temperature cannot be observed in the flame and the average temperature of the flame will be low, which is about 500 degrees Celsius to 700 degrees Celsius.
Due to the average temperature of flame, this method can be used for joining of very low melting point metals such as Lead, Tin, Cadmium, Zinc etc.
This flame can also be used as a heat source for soldering operations.
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