In automotive industry, the most effective method for joining steel pipes and parts, especially those with fluid air, fuel, water or hydraulic oil, is brazing or brazing. The parts to be joined in brazing furnaces, where copper and its alloys are often used as bonding soldering materials, are given as tight fitting.
After preheating the parts entering the furnace with the help of the carrier band, the melted solder material is heated by heating to the temperature of 1100 ° C according to the type of soldering material used. In a non-oxidizing environment in a protective gas atmosphere, the flux of molten solder rapidly penetrates into the junction of parts with the effect of "capilar" forces. The soldered part is again passed through the cooling tunnel in the protective atmosphere and is then removed from the tunnel outlet with excellent bonding and surface quality.