Method for welding contact point material |
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| 申请号 | JP25917488 | 申请日 | 1988-10-14 | 公开(公告)号 | JPH02108480A | 公开(公告)日 | 1990-04-20 |
| 申请人 | Matsushita Electric Works Ltd; | 发明人 | KUBO MASAO; NAKAMURA YOSHIMITSU; KAMATA SAKUO; | ||||
| 摘要 | PURPOSE:To obtain welding in a deeply penetrated state with high reliability by forming a gap around a joining part between a metallic sheet and a contact point material and irradiating the gap with a laser beam. CONSTITUTION:A projecting part 2 is formed o the metallic sheet 1 such as a Cu sheet and the contact point material 3 such as Ag is mounted on the upper surface of the above-mentioned projecting part 2, etc., by which the gap 4 is formed around the joining part between the metallic sheet 1 and the contact point material 3. The gap 4 is irradiated with the laser beam 5 from the circumferential, transverse direction. The laser beam 5 is confined in the gap 4 while repeating multiple reflection in the gap 4. As a result, even if the metallic sheet 1 or the contact point material 3 has high reflectivity with respect to the laser beam 5, heat required for welding is applied thereto effectively. Accordingly, the joining part is molten up to a deep part extending over the periphery from the center of the projecting part 2 and welded integrally. | ||||||
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