US 12,350,732 B2
Method for producing a sintered part
Rainer Schmitt, Wachtberg (DE); Christian Siegert, Ahrweiler (DE); Maurits van de Velde, Bornheim (DE); and Stefan Tiller, Sankt Augustin (DE)
Assigned to GKN Sinter Metals Engineering GmbH, Radevormwald (DE)
Appl. No. 17/784,842
Filed by GKN Sinter Metals Engineering GmbH, Radevormwald (DE)
PCT Filed Dec. 11, 2020, PCT No. PCT/EP2020/085726
§ 371(c)(1), (2) Date Jun. 13, 2022,
PCT Pub. No. WO2021/116386, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 10 2019 134 155.8 (DE), filed on Dec. 12, 2019.
Prior Publication US 2023/0009436 A1, Jan. 12, 2023
Int. Cl. B21J 5/02 (2006.01); B22F 3/24 (2006.01)
CPC B21J 5/02 (2013.01) [B22F 3/24 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for producing a sintered part, wherein the method comprises at least the following steps:
a) providing a sintered part, wherein the sintered part has a first end face, a second end face spaced apart in an axial direction, and a peripheral surface between the end faces;
b) arranging the sintered part in a tool;
c) using the tool to subject the sintered part to a first compressive force acting on the end faces at least in the axial direction, in which the sintered part is calibrated by the first compressive force;
d) subjecting the sintered part to a second compressive force acting on the peripheral surface at least in a radial direction, wherein the second compressive force is applied to the sintered part via at least one rolling tool comprising a roller which is guided in a peripheral direction along the peripheral surface of the sintered part, and wherein the sintered part is shaped at least by the second compressive force, or mechanically processing the sintered part,
wherein steps c) and d) are carried out at least partially at the same time.