Laser keyhole welding structure of aluminum material and laser keyhole welding method
AssigneeNippon Chemi-Con Corporation
InventorsKazuhide HAYAKAWA, Fumito ODASHIMA, Tatsuo KUBOUCHI
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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.
Claims15
1-11. (canceled)
A laser keyhole welding structure of an aluminum material for welding an aluminum material element constituting the electronic component by irradiating a laser beam to the electronic component, wherein
- an angle of divergence (θ) of the tapered portion of the upper portion of the weld nugget to be formed is 45° or less.
A laser keyhole welding method of an aluminum material for welding an aluminum material element constituting the electronic component by irradiating a laser beam to the electronic component, wherein
- the laser light has a beam profile composed of a center output light and a satellite output light formed around the center output light, and
- an angle of divergence (θ) of the tapered portion of the upper portion of the weld nugget to be formed is 45° or less.
A laser keyhole welding method of an aluminum material for welding an aluminum material element constituting the electronic component by irradiating a laser beam to the electronic component, wherein
- the laser light has a beam profile composed of a center output light and a satellite output light formed around the center output light,
- an angle of divergence (θ) of the tapered portion of the upper portion of the weld nugget to be formed is 45° or less,
- the ratio (I/H) between the difference (I) between the half value (ES) of the width of the upper surface of the welding nugget in the cross-sectional shape and the half value (H/2) of the width (H) of the welding nugget in half (G/2) of the total depth (G) of the welding nugget, and the width (H) of the welding nugget is 0.27 or more, and
- the satellite output light is radially formed around the center output light.
Dependencies are inferred from the claim text.