| 摘要 |
A pressure vessel comprising a fiber reinforced resin layer ( 4 ), which is made of a reinforced fiber ( 3 ) impregnated in resin, on a surface of a vessel body ( 2 ), wherein the pressure vessel is produced by forming the fiber reinforced resin layer ( 4 ) on the surface of the vessel body, applying an internal pressure and plastically deforming (subjecting to an auto-frettage) the vessel body ( 2 ) such that a distortion of the surface of the vessel body in a circumferential direction of the vessel body be in a range of 0.7% to 0.9%, in order to apply a pre-stress to the vessel body ( 2 ) and the fiber reinforced resin layer ( 4 ), and wherein the pressure vessel has a burst pressure, which is 2.2 to 2.8 times as large as a charging pressure. Since the pressure vessel ( 1 ) has excellent fatigue property and burst property, and a reduced Weight, this is preferably used as a storage vessel for high pressure gas.
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