Abstract: The invention relates to a method and tools for producing a braking band of a disk-brake disk by casting, in which the disk comprises at least two plates connected to one another by connecting elements forming an internal air-duct for the cooling of the braking band. With the method and the tools, a disk is produced in which at least one of the plates has, in its surface defining the air-ducts, at least one groove having a cross-section which becomes wider towards the air-duct.

Abstract: A braking band for a disk-brake disk which is capable of exceptionally quiet braking comprises at least two plates connected to one another by connecting elements, in which the space between the plates forms an internal air-duct for the cooling of the braking band. At least one of the plates has, in one of its surfaces defining the air-ducts, at least one groove which extends along at least a portion of an orbit around the axis of symmetry of the disk and the cross-section of which becomes wider towards the air-duct.

Abstract: The invention relates to a method and tools for producing a braking band (2) of a disk-brake disk (1) by casting, in which the disk comprises at least two plates (3, 3?) connected to one another by connecting elements (4) forming an internal air-duct (7) for the cooling of the braking band (2). With the method and the tools, a disk is produced in which at least one of the plates (3, 3?) has, in its surface (8, 8?) defining the air-ducts (7), at least one groove (10, 10?) having a cross-section which becomes wider towards the air-duct.

Abstract: A braking band (2) for a disk-brake disk (1) which is capable of exceptionally quiet braking comprises at least two plates (3, 3′) connected to one another by connecting elements (4), in which the space between the plates (3, 2′) forms an internal air-duct (7) for the cooling of the braking band (2). At least one of the cooling of the braking band (2). At least one of the plates (3, 3′) has, in one of its surfaces (8, 8′) defining the air-ducts (7), at least one groove (10, 10′) which extends along at least a portion of an orbit around the axis of symmetric (s) of the disk (1) and the cross-section of which becomes wider towards the air-duct (7).

Abstract: A braking band for a disk-brake disk having an unusual capacity for quiet braking comprises at least one plate which has, in at least one of its lateral surfaces, at least one substantially annular channel which divides the lateral surface into circumferentially uninterrupted rings. The channel comprises at least one first portion which extends around a first orbit about an axis of symmetry of the disk, at least one second portion which extends around a second orbit about the axis of symmetry, radially spaced from the first orbit, in which the first and second orbits have a continuous concave shape, viewed from the axis of symmetry, and the first and second portions are connected by connecting portions which are shorter than the first portion.

Abstract: The invention relates to a method and tools for producing a braking band (2) of a disk-brake disk (1) by casting, in which the disk comprises at least two plates (3, 3′) connected to one another by connecting elements (4) forming an internal air-duct (7) for the cooling of the braking band (2). With the method and the tools, a disk is produced in which at least one of the plates (3, 3′) has, in its surface (8, 8′) defining the air-ducts (7), at least one groove (10, 10′) having a cross-section which becomes wider towards the air-duct.