A brake disc includes a basic body with at least one contact surface that has a wearing coat applied thereon. The at least one contact surface of the basic body is pretreated to realize the bond between the wearing coat and the basic body. The at least one pretreated contact surface of the basic body has a surface topography that is modified by laser irradiation and has at least one predetermined parameter. A method produces the brake disc.

The invention relates to a method for producing a wet friction lining wherein an oil is delivered through pores to a device operated using oil. In a method in which oil delivery from the wet lining is adjustable regardless of the production process for the wet friction lining, the pores are formed using a perforation process.

To provide the underlayer for a disc brake pad, which is positioned between a back plate and a friction material providing excellent brake noise suppression effect. The underlayer composition contains 5-15 weight % of the uncrosslinked fluororubber relative to the entire amount of the underlayer composition, 4-8 weight % of the phenol-based resin as the binder relative to the entire amount of the underlayer composition, and 0.3-2 weight % of the hexamethylenetetramine as the curing agent for the phenol-based resin relative to the entire amount of the underlayer composition.

Disclosed is a brake pad for yaw control comprising: a braking part having a braking surface, and including a fluororesin fiber assembly and a matrix resin infiltrated into the fluororesin fiber assembly.

The invention relates to a friction lining for industrial brakes and drive elements, said lining including a dual-layer structure, a friction layer being connected to a backing layer. In such a friction lining which is particularly suited to industrial applications, the backing layer is inherently resilient and the friction layer and/or the backing layer is/are produced from a synthetic material-elastomer composite.

A railway wheel includes: a wheel including a plate portion; and a brake disc including a circular plate portion whose front face side is a sliding surface, and a plurality of fin portions projected on a back face of the circular plate portion, wherein two of the brake discs are fastened in a region within the sliding surface. Regarding an area of a section crossing a space formed between the brake disc and the wheel along a circumferential direction, a minimum section portion in which the sectional area is minimum is present closest to the back face within the outer peripheral surface of the circular plate portion within a region formed by an outer peripheral surface of the circular plate portion and an inner peripheral surface of the rim portion, and an area of the minimum section portion is not less than 2500 mm.sup.2 and not more than 7000 mm.sup.2.

A preform for a composite may include a plurality of fibrous layers consolidated together and forming the preform extending along a longitudinal axis. The plurality of fibrous layers includes at least one first fibrous layer and at least one second fibrous layer. The at least one first fibrous layer includes a plurality of first segments, and the least one second fibrous layer includes a plurality of second segments. At least one first segment of the plurality of first segments includes a plurality of reinforcing fibers extending at an angle relative to a radial direction extending from the longitudinal axis. At least one second segment of the plurality of second segments includes a plurality of reinforcing fibers extending at an angle + relative to the radial direction. is greater than 0 and less than 90.

A friction unit for a disk brake of a vehicle includes a support plate, a friction pad comprising a friction material layer that includes a contact surface for contacting a disk, and an underlayer including an inner surface which is oriented opposite to the contact surface and which is joined to the support plate, wherein the underlayer comprises at least one slot formed in the inner surface.

A friction brake body, in particular a brake disc, for a friction brake of a motor vehicle is disclosed. The friction brake body has a main part with at least one wear protection layer on at least one frictional contact region of the main part. The wear protection layer forms a frictional contact surface on the wear protection layer face facing away from the main part. The degree of hardness of the wear protection layer increases incrementally or continuously from the main part to the frictional contact surface.

A novel brake pad and method of manufacturing the same are disclosed, suitable for various types of vehicles including bicycles, motorcycles, and automobiles. The brake pad includes a metal backing plate, on one principal surface of which an integrally formed flange is provided, and these features are covered by a friction material. The flange is designed to provide an audible wear indication once the friction material wears down to its level, thereby offering a clear and definitive warning for brake pad replacement. This innovative wear-indication approach enhances vehicle safety by ensuring timely maintenance of the braking system. In addition, the design optimizes the brake pad's performance by improving heat dissipation and maintaining consistent braking power. The manufacturing process of the brake pad includes stamping flanges on the metal backing plate, applying the friction material, and curing the friction material to ensure durable bonding and optimal functionality.