LASER KEYHOLE WELDING STRUCTURE OF ALUMINUM MATERIAL AND LASER KEYHOLE WELDING METHOD
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United States of America
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Feb 13, 2020
app pub date -
Mar 29, 2018
filing date -
Mar 29, 2018
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Abstract
Disclosed is a laser keyhole welding structure and a keyhole welding method of an aluminum material which stably suppress the generation of sputtering to ensure a reliable electrical connection and obtain a mechanically strong connection. To achieve this, a laser keyhole welding structure of an aluminum material is formed by welding an aluminum material element constituting an electronic component by irradiating a laser beam to the electronic component, in which a tapered portion spread angle (θ) of an upper portion of a welding nugget to be formed is 45° or less. Also disclosed is a laser keyhole welding structure of an aluminum material.
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