Manufacturing method for high pressure tank
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYoshihiro NAKATA
Life of this patent
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Abstract
A manufacturing method for a high pressure tank includes preparing a liner including a cylindrical body portion and a pair of side end portions, forming a reinforcing layer by winding fiber-reinforced resin around an outer peripheral surface of the liner, carrying out shot peening by shooting a shot material towards an inner periphery region of a boundary between the body portion and each of the side end portions, and carrying out autofrettage after the reinforcing layer is formed and the shot peening is carried out. The autofrettage is carried out by applying internal pressure to the liner such that the liner is plastically deformed and then eliminating the internal pressure such that compression stress is applied to the liner.
Claims10
A manufacturing method for a high pressure tank, comprising:
- preparing a liner that stores gas and includes a body portion having a cylindrical shape and a pair of side end portions having dome shapes, the liner being made of a metal, the side end portions being formed continuously with both sides of the body portion, respectively;
- forming a reinforcing layer by winding fiber-reinforced resin around an outer peripheral surface of the liner;
- carrying out shot peening by shooting a shot material towards an inner periphery region of a boundary between the body portion and each of the side end portions out of an inner peripheral surface of the liner;
- and
- carrying out autofrettage after the reinforcing layer is formed and the shot peening is carried out, the autofrettage being carried out by applying internal pressure to the liner such that the liner is plastically deformed and then eliminating the internal pressure such that compression stress is applied to the liner.
A manufacturing method for a high pressure tank, comprising:
- preparing a liner that stores gas and includes a body portion having a cylindrical shape and a pair of side end portions having dome shapes, the liner being made of a metal, the side end portions being formed continuously with both sides of the body portion, respectively;
- forming a reinforcing layer by winding fiber-reinforced resin around an outer peripheral surface of the liner;
- carrying out autofrettage by applying internal pressure to the liner such that the liner is plastically deformed and then eliminating the internal pressure such that compression stress is applied to the liner,
- carrying out shot peening by shooting a shot material towards an inner periphery region of a boundary between the body portion and each of the side end portions out of an inner peripheral surface of the liner after the reinforcing layer is formed and the autofrettage is carried out.
Dependencies are inferred from the claim text.