Welding applied to non-ferrous metals

This paper deals with the welding of copper, bronze, brass, aluminium, and magnesium alloys. The effects of oxygen in copper welding are described in detail, and a technique for flameadjustment is suggested. The advantages of hammering copper welds, when hot or cold, and the effects of annealing are enumerated. The section on welding brass deals with the vapourising of zinc, the effects of zinc oxide, and the absorption of gases which produced porosity and reduce mechanical strength. The welding of ¿¿Everdur¿¿ in the construction of hot water storage tanks, heaters, pressure vessels, etc., is specially treated. The welding of aluminium is affected considerably by the oxide always present on its surface. The question fluxes for aluminium is also dealt with. The paper closes with a description of the welding of elektron and brief references to the welding of monel and pure nickel. In the discussion following the paper the question of preparation of the weld and temperature testing were mentioned.