Title:
環状の砥石
Document Type and Number:
Japanese Patent JP7094622
Kind Code:
B2
Abstract:
An annular grindstone includes a grindstone portion including a binding material, and abrasive grains which are dispersed into the binding material to be fixed, in which the binding material contains a nickel-iron alloy. Preferably, a contained ratio of iron in the nickel-iron alloy is in a range of 5 wt % or more to less than 60 wt %. More preferably, a contained ratio of iron in the nickel-iron alloy is in a range of 20 wt % or more to 50 wt % or less. Preferably, the annular grindstone includes the grindstone portion only. In addition, the annular grindstone further includes an annular base including a grip portion, in which the grindstone portion is exposed at an outer peripheral edge of the annular base.
Inventors:
Hiroki Aikawa
Application Number:
JP2018065229A
Publication Date:
July 04, 2022
Filing Date:
March 29, 2018
Export Citation:
Assignee:
Disco Co., Ltd.
International Classes:
B24D3/06; B24B27/06; H01L21/301
Domestic Patent References:
| JP2009172751A | ||||
| JP2017052019A | ||||
| JP10166275A | ||||
| JP2016168655A |
Attorney, Agent or Firm:
Matsumoto
Tomohiro Okamoto
Takahiro Kasahara
Tomohiro Okamoto
Takahiro Kasahara