Resin bonded carbonaceous brush and method of manufacturing the same
AssigneeTotan Kako Co. Ltd.
InventorsYoshikazu Kagawa, Hidenori Shirakawa
Life of this patent
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Abstract
A carbonaceous material is fabricated by kneading of carbon powder and a binder. The carbonaceous material is granulated such that an average particle diameter of the carbonaceous material is 0.3 mm or more. A brush material is fabricated by mixing of the granulated carbonaceous material and metallic powder. A ratio of the metallic powder to a total weight of the brush material is adjusted to 1% by weight or more and 30% by weight or less. Pressure molding is performed on the fabricated brush material, and thermal processing is further performed on the brush material at a temperature at which a resin in the brush material is not carbonized.
Claims7
A resin bonded carbonaceous brush including:
- a carbonaceous material that includes carbon powder and also includes only bonding by a non-carbonized resin as a binder;
- and
- metallic powder arranged among particles of the carbonaceous material, wherein
- an average particle diameter of the carbonaceous material is 0.3 mm or more, and
- a ratio of the metallic powder to the entire carbonaceous material and metallic powder is 1% by weight or more and 30% by weight or less.
A method of manufacturing a resin bonded carbonaceous brush comprising the steps of:
- fabricating a carbonaceous material by mixing carbon powder and a resin;
- adjusting an average particle diameter of the formed carbonaceous material to 0.3 mm or more;
- fabricating a brush material by mixing the carbonaceous material and metallic powder of which the average particle diameters are adjusted;
- molding the fabricated brush material;
- and
- performing heat-treating on the molded brush material at a temperature at which the resin included in the carbonaceous material does not carbonize, to bond the resin included in the carbonaceous material, wherein
- a ratio of the metallic powder to the entire carbonaceous material and metallic powder is adjusted to 1% by weight or more and 30% by weight or less in the step of mixing the carbonaceous material and the metallic powder.
Dependencies are inferred from the claim text.