Patent ID: 7163653
Filing Date: 2007-01-16
Classification: C04B,F16D

Abstract:
1. A process for producing ceramic brake disks, comprising the following process steps: producing a green compact from a sandwich comprising a lower layer of sheet moulding compound, a round thermoplastic insert having an inner diameter, an outer diameter, and decentered apertures, and an upper layer of sheet moulding compound in a working step in a tool subject to the application of pressure and heat, whereby the insert fills out the green compact substantially over its entire expanse and at the same time the green compact is fashioned by the apertures in such a way that the upper and lower sheet moulding compound layers are connected to one another at least in places at least through the apertures, and the upper and lower sheet moulding compound layers completely flow around and enclose the insert, wherein the upper and lower sheet moulding compound layers comprise a phenolic resin matrix and carbon reinforcing fibers having a length of at least 6 mm; exposing the inner diameter and outer diameter of the insert by machining; then pyrolysing the green compact for the purpose of producing a porous moulded article; and melt infiltrating the porous moulded article with a melt to produce a moulded article with reaction-bonded fibers.