US 12,313,135 B2
Brake disk and method for producing same
Tilo Steinmeier, Pohrsdorf (DE)
Assigned to C4 Laser Technology GmbH, Freital (DE)
Appl. No. 17/801,542
Filed by C4 Laser Technology GmbH, Freital (DE)
PCT Filed Feb. 25, 2020, PCT No. PCT/EP2020/054888
§ 371(c)(1), (2) Date Aug. 23, 2022,
PCT Pub. No. WO2021/170216, PCT Pub. Date Sep. 2, 2021.
Prior Publication US 2023/0151859 A1, May 18, 2023
Int. Cl. F16D 65/12 (2006.01); B23K 26/342 (2014.01); B23K 101/00 (2006.01); B23K 103/16 (2006.01); F16D 65/02 (2006.01)
CPC F16D 65/127 (2013.01) [B23K 26/342 (2015.10); B23K 2101/006 (2018.08); B23K 2103/172 (2018.08); F16D 2065/132 (2013.01); F16D 2200/0013 (2013.01); F16D 2200/0065 (2013.01); F16D 2200/0069 (2013.01); F16D 2250/0046 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A brake disk, comprising a metallic main body (1), which has at least one ring-shaped securing element (12) for securing of the brake disk on a rotating axis (14), a first friction region (2) that faces a rotating axis (14) and takes the form of a circular surface, and a second friction region (3) arranged so as to be diametrically opposite the first friction region (2) and remote from a rotating axis, wherein the metallic main body (1), in the region of the first and second friction regions (2, 3), has at least one ring-shaped heat conduction layer (4, 6) atop which is disposed at least one tribologically stressable hard material layer (8), wherein the at least one ring-shaped heat conduction layer (4, 6) is disposed atop the metallic main body (1) and the tribologically stressable hard material layer (8) atop the at least one ring-shaped heat conduction layer (4, 6) by means of laser buildup welding, so as to achieve a cohesive bond between the layers,
wherein the at least one ring-shaped heat conduction layer (4, 6) comprises at least two different materials and the thermal conductivity λ within the at least one ring-shaped heat conduction layer (4, 6) is gradated, wherein there is a metallic or ceramic material and/or a metallic alloy having a thermal conductivity λ1 at least in an inner circumferential region (9) of the first and/or second friction regions (2, 3), and wherein there is a metallic or ceramic material and/or a metallic alloy having a thermal conductivity λ2 in an outer circumferential region (11) of the first and/or second friction regions (2, 3), wherein at least λ1<λ<λ2.