Title:
掘削チップ、掘削工具、および掘削チップの製造方法
Document Type and Number:
Japanese Patent JP6853439
Kind Code:
B2
Abstract:
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.
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| WO/2015/175641 | FULLY INFILTRATED ROTARY DRILL BIT |
| WO/2018/116140 | HYBRID DRILL BIT |
Inventors:
Ahmadi Eco Waldoyo
Masahiro Yano
Toshihiko Matsuo
Yuki Akahoshi
Yuichiro Takeuchi
Masahiro Yano
Toshihiko Matsuo
Yuki Akahoshi
Yuichiro Takeuchi
Application Number:
JP2018513197A
Publication Date:
March 31, 2021
Filing Date:
April 19, 2017
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
E21B10/46; C04B35/5831; C22C1/05; C22C26/00; C22C29/12; C22C29/14; C22C29/16
Domestic Patent References:
| JP2002319173A | ||||
| JP2503454A | ||||
| JP6016476A | ||||
| JP2011212832A | ||||
| JP2004026555A |
Attorney, Agent or Firm:
Yasushi Matsunuma
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
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