Abstract:
Members of Al or Al alloy are brazed together by providing at the juncture a brazing material having a melting point between 550 DEG C. and the melting point of the member having the lowest melting point and comprising at most 15% Si, at least 0.4% Mg, o-25% Cu, the balance Al, producing a non-oxidizing atmosphere at the juncture and heating to the brazing temperature. Some or all of the components of the brazing material may be included in the members to be joined and additional components may be as sheet, powder or wire.
Abstract:
The present invention is a honeycomb panel comprising metal face sheets respectively disposed on upper and lower faces of said honeycomb core characterized in that said honeycomb panel has a metal side plate disposed on at least one side face thereof, for mutually connecting honeycomb panels to each other, and a process for producing a honeycomb panel, said process characterized by comprising the steps of: welding a corrugated honeycomb core at an end face of its corrugation to a side plate along the end face of said corrugation; welding the honeycomb core at top portions of its corrugation to an upper face sheet from the side of the honeycomb core by means of an energy beam; welding bottom portions of the corrugation of the honeycomb core to a lower face sheet from the side of the face sheet by means of an energy beam; and welding the face sheets to the side plate before or after welding the honeycomb core to the face sheets.
Abstract:
"A method for fabricating a sheet assemblage ultimately extensible into a honeycomb core structure, including the steps of locating upper and lower metallic foil sheets with their confronting surfaces in uniform continuous engagement with each other and forming successive, staggered laser welded patterns as successive sheets are added to the assemblage."
Abstract:
A method for applying brazing material to a metal structure includes applying a sticky material maintaining adhesiveness up to temperatures of at least 180.degree. C. and preferably above 200.degree. C., to at least a subregion of the structure. Then brazing powder is applied which continues to adhere to the sticky material. After the application of the brazing powder but before an actual brazing process, the structure is heat treated without the brazing powder falling out during the heat treatment or during ensuing handling steps. The heat treatment may be a heat-degreasing of the structural parts that do not have or do not yet have brazing material applied to them.
Abstract:
A honeycomb seal construction which includes said seal and a mounting ring therefor, said seal having honeycomb cells and being in a press-fit relationship with said mounting ring, there being a brazed joint between the seal and said ring defined by brazing material deposited in said cells at the OD of said seal.
Abstract:
A titanium face plate is perforated by laser drilling holes therethrough. A cellular core is positioned between a sound reflecting solid back plate and the face plate.