US 12,372,130 B2
Brake disc for a friction brake of a transportation vehicle and method of manufacturing the same
Daniel Mohwinkel, Braunschweig (DE); and Markus Harke, Braunschweig (DE)
Assigned to VOLKSWAGEN AKTIENGESELLSCHAFT, (DE)
Filed by VOLKSWAGEN AKTIENGESELLSCHAFT, Wolfsburg (DE)
Filed on Dec. 20, 2022, as Appl. No. 18/068,546.
Claims priority of application No. 10 2021 214 946.4 (DE), filed on Dec. 22, 2021.
Prior Publication US 2023/0193968 A1, Jun. 22, 2023
Int. Cl. F16D 65/12 (2006.01); F16D 69/04 (2006.01)
CPC F16D 65/127 (2013.01) [F16D 65/125 (2013.01); F16D 65/123 (2013.01); F16D 69/04 (2013.01); F16D 69/0408 (2013.01); F16D 2069/0458 (2013.01); F16D 2069/0491 (2013.01); F16D 2200/0013 (2013.01); F16D 2200/0021 (2013.01); F16D 2250/0076 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A brake disc for a friction brake of a transportation vehicle, the brake disc comprising:
a friction portion having at least one friction surface;
a fastening portion for fastening to the transportation vehicle;
a based body composed of gray cast iron or steel, wherein the friction portion and the fastening portion are formed on the base body of gray cast iron or steel;
an anti-wear layer applied to the friction portion as the at least one friction surface, wherein the anti-wear layer is applied by laser deposition welding, wherein the anti-wear layer on the base body is applied beyond the friction surface into a region angled relative to the friction surface ending in that region, and wherein the anti-wear layer is applied in the angled region of the base body with full coverage without any gaps to the base body; and
a contact plane at the friction surface between the anti-wear layer and a substrate thereof on the base body side, wherein the anti-wear layer continues into the angled region and seals the edge of that contact plane.