Aluminium alloys reconditioning by using new filler materials

Abstract

Even for those experienced in welding steels, welding aluminum alloys can present quite a challenge. Higher thermal conductivity and low melting point of aluminum alloys can easily lead to burn through unless welders follow prescribed procedures.Brazing of aluminum needs to be performed “hot and fast”.The main advantages that the paper presents are: the use of non-specialized brazing equipment, the production of a stronger joint than the base material, brazing can be done without flux material, the environment and the operator are protected because no toxic fumes and working temperature is low.The most widely used rod on the market for welding zinc base metals - white - die cast - pot metal. Alloyed from pure virgin metals. Welds made with rod are clean and free from slag and produces a sound joint that is stronger than the parent metal. Brazing aluminum without the use of flux, sound and free from porosity, solders galvanized, also used as a rub-on solder, use a slightly carburizing flame (excess of acetylene), with small tip for most work.