Patent ID: 7993549

Claim:
A process for producing carbon-ceramic brake discs comprising a core body and at least one friction layer, the process comprising the following steps: production of a prefabricated carbonised core body by press-moulding a mixture containing a mass fraction of from 40% to 80% of reinforcing fibres and a binder which is a phenolic resin or a mixture of a phenolic resin and a pitch, curing the binder by heating, and carbonising by heating the press-moulded body with exclusion of oxidising substances to a temperature of between 750 C and 1300 C, filling a compression mould with a deformable mouldable, reinforcing fibre-containing material for the friction layer, placing a prefabricated carbonised core body on top of this layer, and covering the prefabricated carbonised core body in turn with material for the friction layer, closing the mould, placing the mould on a press table and press-moulding the multi-layer composite, curing the material for the friction layer, carbonising the entire press-moulded body and then infiltrating with liquid silicon, wherein the surface of the prefabricated core body facing the friction layer is textured, the texturing on the surface facing the friction layer being in the form of pyramidal, conical or spherical bumps or pyramidal, conical or spherical indentations.