Title:
CERAMIC BALL MATERIAL, CERAMIC BALL MANUFACTURING METHOD USING SAME, AND CERAMIC BALL
Document Type and Number:
WIPO Patent Application WO/2022/138579
Kind Code:
A1
Abstract:
This ceramic ball material, according to an embodiment of the present invention, comprises: a spherical part; and a band-shaped part formed over the circumference of the surface of the spherical part. The width of the band-shaped part is within a range of 0.5 to 4.0 mm inclusive. Both shoulder sections of the band-shaped part are each equipped with an R section, the radius of curvature of which is at least 0.02 mm. Furthermore, for ceramics, any one of aluminum oxide, silicon nitride, boron nitride and zirconium oxide can be applied.
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Inventors:
FUNAKI KAI (JP)
SANO SHOYA (JP)
SANO SHOYA (JP)
Application Number:
PCT/JP2021/047068
Publication Date:
June 30, 2022
Filing Date:
December 20, 2021
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
TOSHIBA MATERIALS CO LTD (JP)
International Classes:
B24B11/00; B24B37/02; B24B37/025; B28B3/02; B28B11/08; C04B35/587; C04B41/72; F16C33/32
Foreign References:
| JP2003137640A | 2003-05-14 | |||
| JPH06229422A | 1994-08-16 | |||
| JPH08109959A | 1996-04-30 | |||
| JP2000337386A | 2000-12-05 | |||
| JPH02129056A | 1990-05-17 | |||
| JP2011093789A | 2011-05-12 | |||
| JPH0648813A | 1994-02-22 | |||
| JP2764589B2 | 1998-06-11 | |||
| JPS6018620A | 1985-01-30 | |||
| JP4761613B2 | 2011-08-31 |
Attorney, Agent or Firm:
TOKYO INTERNATIONAL PATENT FIRM (JP)
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