A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EXCAVATION CHIP, EXCAVATION TOOL, AND METHOD FOR MANUFACTURING EXCAVATION CHIP
A drilling tip according to the disclosure has a tip body which is provided with a tip portion tapered toward a tip side of the tip body; and a hard layer which is formed on a surface of the tip portion of the tip body, an outermost layer of the hard layer is a cBN sintered material having 70 to 95 vol% of cBN grains, and when a cross-sectional structure of the outermost layer is observed, a binder phase having a width of 1nm or greater and 30nm or less and containing Al, B, and N, and in which a ratio of an O content to an Al content is 0.1 or less exists between neighboring cBN grains.
EXCAVATION CHIP, EXCAVATION TOOL, AND METHOD FOR MANUFACTURING EXCAVATION CHIP
A drilling tip according to the disclosure has a tip body which is provided with a tip portion tapered toward a tip side of the tip body; and a hard layer which is formed on a surface of the tip portion of the tip body, an outermost layer of the hard layer is a cBN sintered material having 70 to 95 vol% of cBN grains, and when a cross-sectional structure of the outermost layer is observed, a binder phase having a width of 1nm or greater and 30nm or less and containing Al, B, and N, and in which a ratio of an O content to an Al content is 0.1 or less exists between neighboring cBN grains.
EXCAVATION CHIP, EXCAVATION TOOL, AND METHOD FOR MANUFACTURING EXCAVATION CHIP
AUSGRABUNGSCHIP, AUSGRABUNGSWERKZEUG UND VERFAHREN ZUR HERSTELLUNG EINES AUSGRABUNGSCHIPS
PUCE D'EXCAVATION, OUTIL D'EXCAVATION ET PROCÉDÉ DE FABRICATION DE PUCE D'EXCAVATION
AKHMADI EKO WARDOYO (author) / YANO MASAHIRO (author) / MATSUO TOSHIHIKO (author) / AKAHOSHI YUKI (author) / TAKEUCHI YUICHIRO (author)
2019-11-20
Patent
Electronic Resource
English
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