US 12,030,123 B2
Method for producing a machining segment for the dry machining of concrete materials
Marcel Sonderegger, Balgach (CH); and Cliff Toldo, Vaduz (LI)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/415,268
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Dec. 19, 2019, PCT No. PCT/EP2019/086158
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/127631, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18215798 (EP), filed on Dec. 21, 2018.
Prior Publication US 2022/0023945 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B22F 5/00 (2006.01); B22F 3/14 (2006.01); B22F 3/15 (2006.01); B22F 7/08 (2006.01)
CPC B22F 3/15 (2013.01) [B22F 3/14 (2013.01); B22F 5/00 (2013.01); B22F 7/08 (2013.01); B22F 2005/001 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for producing a machining segment for a machining tool, wherein the machining segment is connectable to a basic body of the machining tool by an underside of the machining segment, comprising the steps of:
producing a green body by placing first hard material particles in a matrix material in a defined particle pattern, wherein the first hard material particles have a projection with respect to the matrix material; and
processing the green body by hot pressing under temperature and pressure between a first press punch, which forms the underside, and a second press punch, which forms an upper side of the machining segment, to form the machining segment, wherein the upper side is opposite from the underside, wherein the second press punch has depressions in a pressing surface, wherein an arrangement of the depressions corresponds to the defined particle pattern of the first hard material particles, wherein a respective projection of the first hard material particles is received within a respective depression in the pressing surface of the second press punch during the hot pressing, and wherein there is no direct contact between the first hard material particles and the second press punch.