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Legislation - EXTRA EDITION In the process of welding, both the
edge of the base metal and the filler metal are melted. During
brazing and soldering, however, only the metal being added to
join the parts is melted. The difference between brazing and
soldering is temperature. Soldering takes place at a lower
temperature than brazing. Other than that, both processes are
similar. In both brazing and soldering the base metal must be
heated to a temperature within a range where the bonding phase
between the molten filler and the base metal can occur. This
process is called tinning. If the metal being joined is too cool
or too hot, tinning cannot occur. Overheating is a major problem
when brazing or soldering copper pipe because the flux will burn
(become oxidized), stop working, and beco