Dual walled titanium tubing and methods of manufacturing the tubing
AssigneeThe Boeing Company
InventorCharles W. Rust
Life of this patent
Estimating the term…
Abstract
Within examples, a method of manufacturing a double-walled titanium conduit is described. Example methods include stitch welding multiple concentric sheets to form a stitch layer, providing the stitch layer between an inner wall and an outer wall of the double-walled titanium conduit, circumferentially seam welding the inner wall and the outer wall to the stitch layer to create a welded assembly, die forming the welded assembly at temperature and pressure to form inner structures between the multiple concentric sheets according to stitch welding lines and to enable a diffusion bond process among the inner wall, the stitch layer, and the outer wall, and removing the double-walled titanium conduit from the die.
Claims18
A double-walled titanium tube structure, comprising:
- an inner wall and an outer wall with a plurality of stiffeners extending between the inner wall and the outer wall;
- wherein the plurality of stiffeners are aligned both axially and radially, and the plurality of stiffeners are diffusion bonded to the inner wall and the outer wall, wherein the plurality of stiffeners are based on stitch welding seamless tubings to create a stitch pattern resulting in individual cells;
- and
- a perimeter weld circumferentially enclosing an end of the inner wall and the outer wall.
A double-walled titanium tube structure, comprising:
- an inner wall and an outer wall with a plurality of stiffeners extending between the inner wall and the outer wall;
- and
- wherein the plurality of stiffeners are aligned both axially and radially, and the plurality of stiffeners are diffusion bonded to the inner wall and the outer wall, and wherein the plurality of stiffeners are based on stitch welding the inner wall and the outer wall of seamless tubings to create a stitch pattern with a number of parallel lines that run along a length of the seamless tubings and a number of parallel lines that run along a width of the seamless tubings resulting in individual cells defined by the stitch pattern;
- and
- a perimeter weld circumferentially enclosing an end of the inner wall and the outer wall.
Dependencies are inferred from the claim text.