Bump-welding method, joins workpiece with impressed sinusoidal or parabolic bumps to second, facing workpiece, by local fusion

摘要

The bump (150) has sinusoidal or parabolic form. One workpiece is heated locally and pressed by a heated tool of corresponding shape, optionally into a die recess. One workpiece (140) is largely made of copper and provided with spaced welding bumps. These are brought into contact with a facing workpiece (110), defining welding locations. The contacting regions are melted together and subsequently cooled, completing the connections. An independent claim IS INCLUDED FOR the bump-welded connection.