Heat transport methods and reflow ovens
Heat transfer modes
Soldering is the process in which two metals are joined together by means of a third metal or alloy having a lower melting point. Soft soldering is characterized by the value of the melting point of the third metal or alloy, which is below 400 °C. The third metal or alloy used in the process is called solder. Heat transport is necessary to heat up the assembly, to activate the flux to melt the solder and to form the solder joint. The three fundamental modes of heat transfer are:
Conduction
Convection
Radiation
Conduction
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