MIG-brazing
The specific advantages of MIG brazing have established this alternative joining process in numerous
branches of industry.
The classic area of application, for processing galvanised sheets, has since been joined by a number
of applications for uncoated, high-alloy and low-alloy steels.
Process principle MIG brazing requires inverter power sources with a special characteristic. A wire
composed largely of copper serves as the filler metal here. SG-CuSi3 and SG-CuAl8 are used
particularly often. It is the filler metal which is responsible for the critical difference from conventional
GMA welding.
Owing to the low fusion temperature of the filler metal - this lies between 900 °C and 1,100 °C - no
fusion of the base metal takes place in MIG brazing. The 1,500 °C fusion temperature of the base
metal, steel, is not reached.