Title:
MATERIAL FOR CERAMIC BALL, DEVICE FOR PROCESSING CERAMIC FORMED BODY, AND METHOD FOR PROCESSING CERAMIC FORMED BODY
Document Type and Number:
WIPO Patent Application WO/2024/009938
Kind Code:
A1
Abstract:
A material for a ceramic ball according to the present embodiment is characterized in that a deviation from spherical form is 2% or less, and an arithmetic mean roughness Ra is 0.2 μm to 2 μm inclusive. Moreover, in the material for a ceramic ball, a maximum cross-sectional height Rt is preferably 4 μm to 20 μm inclusive. Furthermore, in the material for a ceramic ball, Ra1/Ra2 is preferably 0.2 to 2, where Ra1 is the surface roughness Ra in a circumferential direction of a belt-like mark, and Ra2 is the surface roughness Ra of a circumference in a direction perpendicular to the belt-like mark.
Inventors:
SANO SHOYA (JP)
YAMADA KATSUHIKO (JP)
SAKAI RYO (JP)
YAMAGUTI HARUHIKO (JP)
FUNAKI KAI (JP)
AKIYA SUGURU (JP)
KIJIMA KOUICHI (JP)
YAMADA KATSUHIKO (JP)
SAKAI RYO (JP)
YAMAGUTI HARUHIKO (JP)
FUNAKI KAI (JP)
AKIYA SUGURU (JP)
KIJIMA KOUICHI (JP)
Application Number:
PCT/JP2023/024590
Publication Date:
January 11, 2024
Filing Date:
July 03, 2023
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
TOSHIBA MATERIALS CO LTD (JP)
International Classes:
F16C33/32; B24B11/02; C04B35/10; C04B35/48; C04B35/584
Domestic Patent References:
| WO2021235343A1 | 2021-11-25 | |||
| WO2022138579A1 | 2022-06-30 |
Foreign References:
| JP2000337386A | 2000-12-05 | |||
| JP2015098071A | 2015-05-28 | |||
| JP3228924U | 2020-11-19 | |||
| JPH05192597A | 1993-08-03 |
Attorney, Agent or Firm:
TOKYO INTERNATIONAL PATENT FIRM (JP)
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