Patent ID: 7753252
Filing Date: 2010-07-13
Classification: B23K

Abstract:
1. A method for joining a liner to an inner surface of a cylindrical container through an internal friction stir welding, said method comprising the steps of: 1) providing a high melting temperature container material having a melting temperature higher than the melting temperature of aluminum and a liner material having a melting temperature higher than the melting temperature of aluminum; 2) providing a friction stir welding tool inside the container that includes a higher melting temperature material than the container and liner material on a portion thereof; and 3) friction stir welding the liner material to the inside surface of the container to thereby obtain a solid state joint between the container and the liner material, wherein the solid state joint has at least one modified characteristic, by applying the friction stir welding tool from an internal surface of the liner wherein the step of providing the liner provides a liner that completely covers the inner surface of the container.