Manufacturing method for spent fuel storage member and mixed power
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsKazuo Murakami, Yasuhiro Sakaguchi, Toshiro Kobayashi, Toyoaki Yasui
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Abstract
A rectangular pipe is molded by mixing aluminum powder with powder of a neutron absorbing material, molding a premolded body by means of cold isostatic pressing (CIP), canning the premolded body, sintering the premolded body by means of hot isostatic pressing (HIP), performing outer cutting and end face cutting on the can after the sintering, taking a billet out of the can, and extruding this billet.
Claims9
A manufacturing method for a spent fuel storage member in which the member used for storage of spent fuel is manufactured, comprising the steps of:
- ball milling a powder of aluminum having an average diameter of 35 μm with a powder of boron carbide as a neutron absorbing material having an average diameter of 9 μm in an argon atmosphere and placing the powders into a mold wherein said ball milling includes using balls of a metal other than aluminum;
- molding the powders into a premolded body by cold isostatic pressing;
- canning the premolded body;
- and
- sintering the canned premolded body wherein the powder of boron carbide comprises B4C powder and an amount of the B4C powder mixed is between 1.5 wt % and 9 wt %.
A manufacturing method for a spent fuel storage member in which the member used for storage of spent fuel is manufactured, comprising the steps of:
- ball milling a powder of aluminum having an average diameter of 35 μm with the powder of boron carbide as a neutron absorbing material having an average diameter of 9 μm in argon atmosphere and placing the powders into a mold;
- molding the powders into a premolded body by cold isostatic pressing;
- canning the premolded body;
- and
- sintering the canned premolded body,
- wherein the powder of boron carbide comprises B4C powder and amount of the B4C powder mixed is between 1.5 wt % and 9 wt %.
Dependencies are inferred from the claim text.