Double-layer brake disc in nickel-free steel and manufacturing method
AssigneeBrembo S.p.A.
InventorsFabiano CARMINATI, Simone BIONDO, Stefano MEDICI, Salvatore GIAMMARINARO
Life of this patent
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Abstract
A brake disc for disc brake comprises a braking band made of gray cast iron or steel, provided with two opposite braking surfaces, each of which defines at least partially one of the two main faces of the disc. The brake disc is provided with a base layer totally nickel-free and one or more carbides included in the nickel-free steel, which covers at least one of the two braking surfaces of the braking band. An intermediate layer composed of nickel-free steel is interposed between the base layer and at least one of the two braking surfaces of the braking band.
Claims16
1-15. (canceled)
A brake disc for disc brake, comprising a braking band provided with two opposite braking surfaces, each of which defines at least partially one of the two main faces of the disc, the braking band being made of gray cast iron or steel;
- said disc being provided with a base layer which covers at least one of the two braking surfaces of the braking band, said base layer being composed of steel totally free from nickel and of one or more carbides included in the nickel-free steel,
- and wherein an intermediate layer composed of nickel-free steel is interposed between the base layer and at least one of the two braking surfaces of the braking band.
A method for making a brake disc comprising the following operating steps:
- a) preparing a brake disc, comprising a braking band provided with two opposite braking surfaces, each of which defines at least partially one of the two main faces of the disc, the braking band being made of gray cast iron or steel;
- a1) after step a), depositing on at least one of the two opposite braking surfaces, an intermediate layer composed of nickel-free steel;
- b) after step a1), depositing a base layer composed of steel totally free from nickel.
Dependencies are inferred from the claim text.