The weldability of brass was described

and the design method and the welding operation points for oxyfuel gas welding brass were presented.Meanwhile

some application examples were showed.During gas welding brass

welding wires with Si must be considered.The Si oxidized film formed could cover the surface of molten pool

which not only restrained the further evaporation and burning loss of Zn

but also effectively prevented hydrogen from the melt to reduce the generation of hydrogen gas hole in welding joint.Weak oxidizing flame should be used in gas welding brass

which could prevent ZnO from reduction and decrease gas hole defects through keeping CO2 with high concentration at welding zone to form a layer oxidized atmosphere on surface of liquid brass.