| 摘要 |
PURPOSE:To enable a part of low melting point alloy layer to creep up on the surface of outer part in excellent wettability by a method wherein a part of low melting point alloy reaches the surface of the outer lead part through one or a plurality of pores bored through the outer lead part. CONSTITUTION:When a press down piece 10 is lowered, one of the outer lead part 8 is pressed down. Next, the outer lead part 8 is irradiated with a converged laser beam from a projector to heat a low melting point layer 5. Thus, a part of the fused low melting point alloy layer 5 passing along the side of the outer lead part 8 creeps up on the surface of the outer lead part 8. On the other hand, the pores 9 suck up a part of the fused low melting point alloy 5 to be lifted by the capillary phenomenon. Accordingly, the lifted melting point alloy can be spread in excellent wettability on the surface of the outer lead parts 8. |
