| 摘要 |
PURPOSE:To form the joint pat having good operability and sufficient joining strength by performing an electric resistance welding with interposing an Ag inserting material between high conductive materials to be welded. CONSTITUTION:A welding current is flowed between electrodes 3, 4 by interposing Ag inserting material 5 between the lead frames 1, 2 consisting of a high conductive material, by pinching from the upper and lower parts by electrodes 3, 4 are with pressing, if necessary. A contact face 10, 10a is therefore formed between said inserting material 5 and lead frames 1, 2 respectively and the contact resistance is increased by the increase in the contact area. Because of there being the oxidized film having big resistance on the surface of the inserting material 5, the Ag inserting material 5 and lead frames 1, 2 are fused without depositing the electrodes 3, 4 and lead frames 1, 2 and the lead frames 1, 2 are strongly joined each other.
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