Patent
Method and apparatus for welding thin metal sheets
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TLDR
In this paper, a method for welding thin metal sheets (A, B) by localized heating of limited juxtaposed zones of the metal sheets to be welded to cause their fusion and to form spot welds was described.Abstract:
There is described a method for welding thin metal sheets (A, B) by the localized heating of limited juxtaposed zones of the metal sheets to be welded to cause their fusion and to form spot welds (S). In each weld zone, the metal sheets (A, B) are heated and fused along a closed line so that each weld spot (S) has a substantially annular configuration in cross section in a plane parallel to the metal sheets. This welding may be achieved for example with the use of a laser (2) produced by a laser source (1), or by electrical resistance welding with a pair of opposed electrodes (6, 7) the ends whereof which are intended to grip the metal sheets (A, B) are suitably shaped.read more
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TL;DR: In this paper, a method of welding galvanized steel with a high energy density beam is described, which can be created by an electron or laser beam with a power density of at least 4 X 106 watts per square inch.
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