Atmosphere Brazing

We have the ability to use many different types of atmospheres with our furnaces. The most common is a hydrogen environment and vacuum. Others include neutral atmospheres such nitrogen, argon and other chemically active atmospheres such as forming gas (N2/H2(5%)). Cleanliness of the parts is critical to successful brazing. This includes being free of organic materials such as grease and oils which we remove in our cleaning line. In addition the parts need to be free of oxides which would prevent the joining of materials. A suitable furnace environment is selected that will prevent the formation of oxides during the braze cycle. Parts must be clean and free of oxides prior to brazing. Certain atmospheres, such as web hydrogen, do a great job of removing hydro-carbons from the surfaces prior to brazing. Air brazing and fluxes are not used in any of Altair’s processes.