SOLDERING METHOD AND SOLDERING DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain an excellent fillet shape by feeding a sufficient amount of soft solder to a part to be soldered and to secure excellent wettability to realize soldering of high productivity which does not cause defective bridging. SOLUTION: In a spout soldering method, a work 3 to be soldered is brought into contact with molten solder spouted from a spout guide 2 upwardly in the reverse-oblique direction to the advancing direction of the plate-like work 3. The solder is spouted to a horn-like squirt hole 4 from the spout guide 2 and diffused over the horn-like squirt hole 4 in a ridge shape to form a diffused spout part 5. A ridge-shaped wave spout part 6 is formed by the wave generated when the molten solder flows from the ridge-shaped diffused spout part 5 in a spreading manner. The plate-like work 3 is soldered by bringing into contact with the wave spout part 6.