| 摘要 |
PROBLEM TO BE SOLVED: To provide a liner for gas cylinder which can be produced in a comparatively simple work and has excellent pressure-resistant characteristic. SOLUTION: The liner 1 for gas cylinder is composed of a cylindrical barrel part 2 opened at both end parts and end plates 3 joined at both end parts of the cylindrical barrel part 2 and closing the both end opening holes of the cylindrical barrel part 2. The cylindrical barrel part 2 and the end plates 3, are friction-stirring-joined by using a probe of a tool for friction-stirring-joining at abutted parts of both parts. A bead part 6 formed by passing through the probe, is provided with an annular portion 7 formed over the whole periphery at the abutted part between the cylindrical barrel part 2 and the end plate 4, and a relief portion 8 extended to the end plate 3 side by dividing from the annular portion 7 and coming to the tip end surface of a projecting part 5 fixedly arranged on the end plate 3. A probe withdrawal hole 9 is formed at the tip end part of the relief hole 8. COPYRIGHT: (C)2004,JPO&NCIPI |
