Powder contact member and method for surface treatment of powder contact member
US12017326B2 · kind B2 · utility
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3References
12Claims
0Family size
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Key dates
| Filing date | Jan 17, 2023 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Jan 17, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A surface treatment method for preventing adhesion of powder to a powder-contacting member having a surface on which contacted powder flows in the form of a particle layer. The method includes performing surface treatment on the surface such that an arithmetic average peak curvature Spc (1/mm) of the surface is 150 to 400, a peak density Spd (piece/mm2) of the surface is 10000 to 180000, a root mean square gradient Sdq of the surface is 0.05 to 0.30, and an arithmetic average height Sa (μm) of the surface is 0.02 to 3.00, and providing a space where an air layer can exist between the particle layer and the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.