US 11,701,708 B2
Method for fabrication of a composite part
Henning Luebbe, Bienne (CH); and Stewes Bourban, Chabrey (CH)
Assigned to The Swatch Group Research and Development Ltd, Marin (CH)
Appl. No. 16/93,424
Filed by The Swatch Group Research and Development Ltd, Marin (CH)
PCT Filed Apr. 28, 2017, PCT No. PCT/EP2017/060192
§ 371(c)(1), (2) Date Oct. 12, 2018,
PCT Pub. No. WO2017/191050, PCT Pub. Date Nov. 9, 2017.
Claims priority of application No. 16168124 (EP), filed on May 3, 2016.
Prior Publication US 2019/0143416 A1, May 16, 2019
Int. Cl. B22F 7/06 (2006.01); A44C 5/00 (2006.01); B22F 3/22 (2006.01); B22F 3/24 (2006.01); B28B 1/24 (2006.01); B28B 11/08 (2006.01); C22C 33/02 (2006.01); G04B 3/04 (2006.01); G04B 19/04 (2006.01); G04B 19/12 (2006.01); G04B 19/18 (2006.01); G04B 37/22 (2006.01); G04B 39/00 (2006.01)
CPC B22F 7/06 (2013.01) [A44C 5/0053 (2013.01); B22F 3/225 (2013.01); B22F 3/24 (2013.01); B28B 1/24 (2013.01); B28B 11/0845 (2013.01); B22F 2003/247 (2013.01); B22F 2301/35 (2013.01); B22F 2302/25 (2013.01); B22F 2998/10 (2013.01); C22C 33/0285 (2013.01); G04B 3/04 (2013.01); G04B 19/042 (2013.01); G04B 19/12 (2013.01); G04B 19/18 (2013.01); G04B 37/22 (2013.01); G04B 39/004 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for fabrication of a composite component for a timepiece, the method comprising:
a) forming a first injection molding composition including steel 316L powder and a second injection molding composition including zirconia powder;
b) agglomerating via injection molding one of the first and second injection molding compositions to form at least a first part of a blank;
c) agglomerating by injection molding the other of the first and second injection molding compositions against the first part of the blank to form at least a second part of the blank; and
d) non-consecutively sintering the first and second injection molding compositions forming the blank to obtain the composite component formed of steel 316L and zirconia,
wherein the first part forms a main bezel body of the timepiece having recesses, and the second part is filled in the recesses to form one or more graduations.