Cubic boron nitride sintered body and cutting tool

B - Operations – Transporting – 23 – B

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Details

B23B 27/14 (2006.01) B23B 27/20 (2006.01) C22C 29/16 (2006.01)

Patent

CA 2569733

Provided are a high strength and highly abrasion-resistant cBN sintered compact which is excellent in the resistance to abrasion and the resistance to partial loss, in the high speed /highly efficient cutting of an iron-based material being hard and difficult to cut; and a cutting tool using the above sintered compact. A cBN sintered compact which contains 45 to 99.9 wt % of a cBN component, characterized in that it contains carbon in an amount of 0.01 to 0.15 wt % relative to the weight of the cBN component in the inside of a cBN particle thereof and in a particle boundary of the bonding between cBN particles; and a cutting tool which uses the sintered compact at least in a region relating to cutting.

La présente invention décrit un outil de compact fritté très fort et très résistant à l'abrasion, présentant une excellente résistance à l'abrasion et à la perte partielle, dans une découpe très efficace à grande vitesse d'un matériau à base de fer dur et difficile à couper, ainsi qu'un outil de découpe utilisant ledit outil de compact fritté. Un outil de compact fritté cBN qui contient de 45 à 99,9 % en poids d'un composant de cBN, est caractérisé en ce qu'il contient du carbone en quantité de 0,01 à 0,15 % en poids relativement au poids du composant de cBN à l'intérieur d'une particule de cBN et une limite de particule de la liaison entre particules cBN, ainsi qu'un outil de découpe utilisant l'outil de compact fritté au moins dans une région relative à la découpe.

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