Brazing & Soldering
Brazing and Soldering are a group of process that join pieces of material together using a filler material (solder). The main difference between the two processes is the melting point of the solder.
A process is classed as Soldering if the solder melts below 450oC (840oF) or Brazing if above that melting point.
It must also be noted, for this process to be successful the materials being fused together must have a higher melting point than the filler being used.
Both brazing and soldering follow the same general process. The solder is placed on the workpieces and is heated above melting point. When it becomes molten it is naturally drawn into the ‘joint’. A metallurgical bond is formed between the workpieces as the filler sets.
The solder is commonly an alloy of silver, brass, tin, copper or nickel. The choice of solder is driven by the workpiece material
• Brazing
• Soldering