Back to results
US 2026/0185560 A1Published application
Ceramic ball material, method for manufacturing ceramic ball using same, and ceramic ball
AssigneeNiterra Materials Co., Ltd.
InventorsKai FUNAKI, Hideki SATO
Life of this patent
Estimating the term…
Abstract
A ceramic ball material according to an embodiment including: a spherical portion; and a band-shaped portion formed over a circumference of a surface of the spherical portion. The ceramic ball material has a ratio Rtb/Rts of 1.0 or more, where Rtb denotes a maximum cross-sectional height of a roughness profile on an outer peripheral surface of the band-shaped portion; and Rts denotes a maximum cross-sectional height of roughness on an outer peripheral surface of the spherical portion.
Claims12
A method for manufacturing a ceramic ball material comprising:
- a granulating step of granulating a granulated powder;
- a molding step of molding a green compact from the granulated powder;
- and
- a sintering step of sintering the green compact to obtain the ceramic ball material, wherein
- the ceramic ball material obtained by the sintering step including
- a spherical portion;
- and
- a band-shaped portion formed over a circumference of a surface of the spherical portion, and
- the ceramic ball material obtained by the sintering step has a ratio Rtb/Rts of 1.0 or more, where Rtb denotes a maximum cross-sectional height of a roughness profile on an outer peripheral surface of the band-shaped portion;
- and Rts denotes a maximum cross-sectional height of roughness on an outer peripheral surface of the spherical portion.
7 more elements
Dependencies are inferred from the claim text.