US 12,030,121 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. 17/415,327
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Dec. 19, 2019, PCT No. PCT/EP2019/086152
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/127625, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18215797 (EP), filed on Dec. 21, 2018.
Prior Publication US 2022/0055105 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B22F 3/12 (2006.01); B22F 5/00 (2006.01); B22F 7/08 (2006.01)
CPC B22F 3/12 (2013.01) [B22F 7/08 (2013.01); B22F 2005/001 (2013.01); B22F 2207/13 (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 are placed in the matrix material with a respective projection with respect to the matrix material;
compacting the green body by 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 a compact body, 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 compacting, and wherein there is no direct contact between the first hard material particles and the second press punch; and
processing the compact body by temperature or by infiltration to produce the machining segment.