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    • 2. 发明公开
    • 강재와 알루미늄재의 접합체, 그 스폿 용접 방법 및 그것에이용하는 전극 팁
    • 钢产品和铝材料之间的接合产品,接头产品的点焊方法和用于接头产品的电极芯片
    • KR1020080089501A
    • 2008-10-06
    • KR1020087020545
    • 2007-02-21
    • 가부시키가이샤 고베 세이코쇼
    • 우루시하라와따루다께다미까꼬마쯔모또가쯔시가또오쥰
    • B23K11/20B23K11/11B23K11/30
    • B23K11/115B23K11/20B23K11/3009B23K2201/006B23K2201/18B23K2201/20B23K2203/20C09J5/10Y10T428/12347
    • This invention provides a joint product between a steel product and an aluminum material, which can realize spot welding with high bonding strength, and a spot welding method for the joint product. In one embodiment, a steel product (1) having a sheet thickness t1 of 0.3 to 3.0 mm is joined to an aluminum material (2) having a sheet thickness t2 of 0.5 to 4.0 mm by spot welding to form a joint product between the steel product and the aluminum material. The joint product is characterized in that the nugget area in the joint is 20 x t20.5 to 100 x t20.5 mm2, the area of a part where the thickness of an interface reaction layer is 0.5 to 3 mum, is not less than 10 x t20.5 mm2, and the difference in thickness of the interface reaction layer between the joint center and a point distant from the joint center by a distance of one-fourth of the joint diameter DC is not more than 5 mum. The above constitution can provide a high-bonding strength joint product, between dissimilar materials, which can be formed without newly using other materials such as clad materials and without newly adding a separate step using an existing spot welding apparatus at low cost, and a spot welding method.
    • 本发明提供一种能够实现高接合强度的点焊的钢材和铝材之间的联合产品,以及用于接合产品的点焊方法。 在一个实施例中,通过点焊将具有0.3至3.0mm的板厚度t1的钢产品(1)与片材厚度t2为0.5至4.0mm的铝材料(2)接合,以形成钢 产品和铝材料。 接头产品的特征在于,接头中的熔核区域为20×t20.5〜100×t20.5mm2,界面反应层的厚度为0.5〜3μm的部分的面积为 10×t20.5mm 2,并且接合中心与远离接头中心的点之间的界面反应层的厚度差距离为接头直径DC的四分之一的距离不大于5μm。 上述结构可以提供不同材料之间的高粘合强度接头产品,其可以在不重新使用诸如包覆材料的其它材料的情况下形成,并且不使用现有的低成本点焊装置新增单独的步骤, 焊接方法。