US 11,951,592 B2
Shot-peening powder
Julien Cabrero, Salon de Provence (FR); Anne-Laure Beaudonnet, Robion (FR); Yves Léon Marcel Boussant-Roux, Montfavet (FR); and Benjamin Gilbert Robert Levy, Marseilles (FR)
Assigned to SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, Courbevoie (FR)
Appl. No. 17/058,369
Filed by SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, Courbevoie (FR)
PCT Filed May 28, 2019, PCT No. PCT/EP2019/063808
§ 371(c)(1), (2) Date Nov. 24, 2020,
PCT Pub. No. WO2019/229057, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. 1854492 (FR), filed on May 28, 2018.
Prior Publication US 2021/0187700 A1, Jun. 24, 2021
Int. Cl. B24C 11/00 (2006.01); B24C 1/10 (2006.01); C04B 35/48 (2006.01)
CPC B24C 11/00 (2013.01) [B24C 1/10 (2013.01); C04B 35/481 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/5427 (2013.01); C04B 2235/5436 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A shot-peening powder consisting of ceramic particles, comprising more than 95% by mass of beads with a sphericity greater than or equal to 0.75,
having a median size D50 greater than 50 μm and less than 1200 μm, and
having a value (D90−D10)/D50, or “S”, such that
S≤−0.126·ln(D50)+0.980  (1)
D10, D50 and D90 being particle sizes corresponding to the percentages equal to 10%, 50% and 90% by volume, respectively, on the cumulative particle size distribution curve of the powder, said particle sizes being ranked in ascending order and being expressed in μm.