Patent ID: 6199742
Filing Date: 2001-03-13
Classification: B23K

Abstract:
A method of brazing together a lightweight metallic aerostructure sandwich panel having at least two spaced face sheets and an intermediate honeycomb core layer which comprises:providing a tooling base having a determinable upper surface;assembling spaced upper and lower metal face sheets and an intermediate metal honeycomb core layer together with at least one layer of braze material upon said upper surface of the tooling base to provide an unbrazed aerostructure panel;positioning a layer of conformable honeycomb core upon said upper face sheet;positioning a pressure means upon said layer of conformable honeycomb core for providing a downward pressure upon said layer of honeycomb core and causing said honeycomb core to provide a uniform downward pressure over the upper face sheet of said unbrazed aerostructure panel, andsubjecting said unbrazed aerostructure panel to a predetermined cycle of elevated temperature and time to permit the layer of braze material to be melted and thereby provide a brazed integral aerostructure panel.