Abstract:
The present invention relates to a casting method which employs rapid solidification of metal, rare-earth metal or the like, as well as to a casting apparatus and a cast alloy. A centrifugal casting method includes the steps of pouring a molten material onto a rotary body; sprinkling the molten material by the effect of rotation of the rotary body; and causing the sprinkled molten material to be deposited and to solidify on the inner surface of a rotating cylindrical mold. The axis of rotation of the rotary body and the axis of rotation of the cylindrical mold are caused not to run parallel to each other. The centrifugal casting method can attain a decrease in average deposition rate. As a result, generation of the dendritic alpha Fe phase or generation of a segregation phase of Mn or the like is suppressed, thereby realizing a high-performance R-T-B-type rare-earth magnet alloy.
Abstract:
An electromagnetic wave-absorbing material composition which includes: (A) a compound having two or more carboxyl groups and/or an acid anhydride group thereof, in one molecule of the compound; (B) a compound having two or more epoxy groups in one molecule thereof; and (C) a soft magnetic powder.
Abstract:
The present invention relates to a casting method which employs rapid solidification of metal, rare-earth metal or the like, as well as to a casting apparatus and a cast alloy. A centrifugal casting method includes the steps of pouring a molten material onto a rotary body; sprinkling the molten material by the effect of rotation of the rotary body; and causing the sprinkled molten material to be deposited and to solidify on the inner surface of a rotating cylindrical mold. The axis of rotation of the rotary body and the axis of rotation of the cylindrical mold are caused not to run parallel to each other. The centrifugal casting method can attain a decrease in average deposition rate. As a result, generation of the dendritic alpha Fe phase or generation of a segregation phase of Mn or the like is suppressed, thereby realizing a high-performance R-T-B-type rare-earth magnet alloy.
Abstract:
An electromagnetic wave-absorbing material composition which includes: (A) a compound having two or more carboxyl groups and/or an acid anhydride group thereof, in one molecule of the compound; (B) a compound having two or more epoxy groups in one molecule thereof; and (C) a soft magnetic powder.
Abstract:
An electromagnetic wave-absorbing material composition which includes: (A) a compound having two or more carboxyl groups and/or an acid anhydride group thereof, in one molecule of the compound; (B) a compound having two or more epoxy groups in one molecule thereof; and (C) a soft magnetic powder.
Abstract:
An electromagnetic wave-absorbing material composition which includes: (A) a compound having two or more carboxyl groups and/or an acid anhydride group thereof, in one molecule of the compound; (B) a compound having two or more epoxy groups in one molecule thereof; and (C) a soft magnetic powder.
Abstract:
Segregation in a hydrogen-absorbing alloy is decreased by centrifugal casting which is devised so that the melt fed to the bottom portion of a cylindrical rotary mold (4a) solidifies during one rotation of the mold. The average depositing speed of melt is from approximately 0.005 to 0.1 cm/second.