Method for cutting rare earth alloy, method for manufacturing rare earth alloy plates and method for manufacturing rare earth alloy magnets using wire saw, and voice coil motor
AssigneeSumitomo Special Metals Co., Ltd.
InventorsMasanori Chikuba, Hazime Ishida
Life of this patent
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Abstract
A method for cutting a rare earth alloy according to the present invention includes the steps of: a) supplying slurry containing abrasive grains onto a wire; and b) machining the rare earth alloy with the abrasive grains, interposed between the wire and the rare earth alloy, by running and pressing the wire against the rare earth alloy. The slurry contains, as a main component, oil in which the abrasive grains are dispersed, and the viscosity of the slurry at 25° C. is in the range from 92 to 175 mPa.sec.
Claims13
A method for cutting a rare earth alloy magnet, including an Nd—Fe—B compound comprising the steps of:
- a) supplying slurry containing abrasive grains onto a wire, the slurry containing, as main component, oil in which the abrasive grains are dispersed, and exhibiting a viscosity at 25° C. in the range from 92 to 175 mPa.sec;
- and
- machining the rare earth alloy magnet with the abrasive grains, interposed between the wire and the rare earth alloy magnet, by running and pressing the wire against the rare earth alloy magnet.
A method for manufacturing rare earth alloy plates, comprising the steps of:
- forming an ingot of a rare earth alloy magnet including an Nd—Fe—B compound;
- and
- separating a plurality of rare earth alloy plates from the ingot of the rare earth alloy magnet,
- said separating step comprising the steps of:
- supplying slurry containing abrasive grains onto a wire, the slurry containing, as a main component, oil in which the abrasive grains are dispersed, and exhibiting a viscosity at 25° C. in the range from 92 to 175 mPa sec;
- and
- machining the ingot with the abrasive grains, interposed between the wire and the ingot, by running and pressing the wire against the ingot.
A method for manufacturing rare earth alloy magnets including an Nd—Fe—B compound, comprising the steps of:
- making a sinter out of a rare earth magnetic alloy powder;
- and
- separating a plurality of rare earth alloy magnets from the sinter,
- said separating step comprising the steps of:
- supplying slurry containing abrasive grains onto a wire;
- the slurry containing, as main component, oil in which the abrasive grains are dispersed, and exhibiting a viscosity at 25° C. in the range from 92 to 175 MPa sec;
- and
- machining the sinter with the abrasive grains, interposed between the wire and the sinter, by running and pressing the wire against the sinter.
Dependencies are inferred from the claim text.