Soldering method and apparatus

摘要

There are provided a solder ball deforming step of mechanically deforming a ball to break an oxide film of a surface thereof and to expose a nonoxide surface and a solder melting step of heating and melting the deformed solder ball through energy irradiation in a state where the deformed solder ball is mounted on joint units of a loaded work. The solder ball deforming step mechanically deforms the solder ball to form at least two orthogonal contact surfaces in contact with the joint surfaces of the joint units.