GAS WELDING PROCESS AND EQUIPMENTS

Gas welding is a fusion welding processes which joins metals using the heat oh combustion of an oxygen/air and fuel gas (i e. acetylene,hydrogen,propane or butane ) mixture. The intense heat (flame) thus produced melts and fuses together the edges of the parts to be welded, generally wit the addition of filler metal.

OXY-ACETYLENE WELDING

When acetylene is mixed with oxygen wit appropriate proportion in the welding torch and ignited, the flame resulting at the tip of the torch is sufficiently hot to melt and join the parent metal.
The oxy-acetylene flame reaches a temperature of about 3200 degree Celsius and thus can melt all commercial metals during welding,actually flow together to form a complete bond. A filler metal rod is generally added to the molten metal pool to build up the seam slightly for greater strength.
Oxy-Acetylene welding does not require the components to be forced together under pressure until the weld forms and solidifies.