Method of manufacturing a fuel tank

Details Method of manufacturing a fuel tank Method of manufacturing a fuel tank

1996-07-26

1998-10-27

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

B23K 2600

Patent

active

058280332

ABSTRACT:
Upper and lower shell members of aluminum-plated steel panels have respective flanges overlapping each other and welded to each other by a laser beam, forming a fuel tank. One of the flanges has a stepped region spaced from the other of the flanges, defining a gap between the stepped region and the other flange. The laser beam is applied to the flanges closely to the gap for discharging unwanted components such as aluminum from a welded area of the flanges into the gap. Therefore, the amount of aluminum contained in the welded area is reduced to increase the bonding strength of the welded area.

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