JOINING PANEL FOR DIFFERENT TYPE OF ALUMINUM ALLOY, PRESSURE VESSEL BUILT BY THIS JOINING PANEL, AND LNG TANK

摘要

PROBLEM TO BE SOLVED: To provide a joining panel of different types of aluminum alloy, a joining panel which is suitably used for building a large structure such as a pressure vessel and which makes light weight and large scale possible while maintaining joining strength of the large structure, to provide a pressure vessel built by this joining panel, and to provide an LNG tank.;SOLUTION: In the planar or curved joining panel 1 of different types of aluminum alloy, of which panel is formed by joining different types of planar aluminum alloy to each other, a planar hard-to-weld aluminum alloy 12 and a planar easy-to-weld aluminum alloy 11 are joined by friction stir welding 22 to form the joining panel of different types of aluminum alloy, wherein the planar easy-to-weld aluminum alloy 11 is configured to be situated on the side edge side of the joining panel. When a large scale structure is built by a plurality of joining panels 1, welding is conducted between the planar easy-to-weld aluminum alloys 11 on the side edge side of the joining panel 1.;COPYRIGHT: (C)2009,JPO&INPIT