Furnace brazing

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Furnance brazing schematic

Furnace brazing is a process in which bonding is produced by furnace heat and a nonferrous filler metal having a melting point above 800ºF (427ºC), but below that of the base metals. The filler metal is distributed in the joint by capillary attraction.^[1]

Furnace brazing produces a clean atmosphere, which mostly eliminates use of flux and also eliminates post-braze cleaning. Various types of furnace are used for brazing, mostly employing either a gaseous atmosphere or vacuum. The overall furnace construction is based on either batch type or continuous operation.^[2]

Furnace brazing frequently takes place under vacuum conditions.^[3]

References

1. http://www.weldguru.com/welding-terminology.html
2. http://www.twi.co.uk/content/kssbd002.html
3. http://www.wallcolmonoy.com/process/vacuum-brazing.html