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US 5,725,042 AGranted
Method for producing hydrogen-absorbing alloy
AssigneeShowa Denko K.K.
InventorsYoichi Hirose, Shiro Sasaki, Hiroshi Hasegawa, Uremu Hosono, Masahide Utsunomiya
Life of this patent
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Abstract
The segregation in the hydrogen-absorbing alloy is decreased by a centrifugal casting which is devised in the present invention so that: a melt fed to the bottom portion of a cylindrical rotary mold solidifies during one rotation of the mold; and, the average depositing speed of melt is from approximately 0.005 to 0.1 cm/second.
Claims14
A method for producing a hydrogen-absorbing alloy, comprising the steps:
- preparing a rotary body having a cylindrical inner surface;
- rotating the rotary body around its longitudinal axis;
- preparing melt of the hydrogen-absorbing alloy;
- and,
- pouring, on the cylindrical mold surface formed by the cylindrical inner surface, the melt of the hydrogen-absorbing alloy at an average depositing speed of approximately 0.1 cm/second or less, thereby centrifugally casting and rapidly cooling the melt of the hydrogen-absorbing alloy on the cylindrical mold surface.
2 more elements
A method for producing a hydrogen-absorbing alloy, comprising the steps:
- preparing a rotary body having a cylindrical inner surface which forms the cylindrical mold surface;
- rotating the rotary body around its longitudinal axis;
- preparing melt of the hydrogen-absorbing alloy;
- pouring the melt of the hydrogen-absorbing alloy on the mold surface to a predetermined bottom portion, thereby centrifugally casting and rapidly cooling the melt of the hydrogen-absorbing alloy on the cylindrical inner mold surface;
- and,
- adjusting the rotary speed of the rotary body and the pouring amount of melt such that the melt poured to the predetermined bottom portion solidifies during one rotation of the rotary body.
3 more elements
Dependencies are inferred from the claim text.