The invention relates to a method for applying sand to the inner radius of drum brake linings comprising the following steps: a) rolling a UV-curing adhesive onto the inner radius of a drum brake lining, b) applying a frictional grain, such as zircon sand, to the adhesive layer, c) removing the frictional grain not retained by the adhesive from the lining surface, and d) curing the coating by means of UV radiation.

Provided are a method for manufacturing a wet friction plate, whereby efficiency of the work of forming a fine groove on a friction material can be improved, the wet friction plate, and a wet multiple-plate clutch device having the wet friction plate. In the method for manufacturing a wet friction plate 200, a core metal 201 and a friction material 210 are prepared in a first step. Thereafter, a resin layer 203 is formed on the core metal 201 in a second step. The resin layer 203 is formed on each of entire two plate surfaces of the core metal 201. Subsequently, the friction material 210 is attached onto the resin layer 203 of the core metal 201 in a third step. Subsequently, a fine groove 211 is formed in the friction material 210 in a fourth step. Specifically, irradiation of a laser beam L is started on an exposed portion 205 of the core metal 201. A laser head 301 is displaced in an annular shape while continuously emitting the laser beam L. Thus, annular fine grooves 204 and 211 are formed in the exposed portion 205 of the core metal 201 and the friction material 210.

An automotive disk brake assembly installed in an automobile having a wheel. The assembly includes a floating caliper supporting an inner and outer brake pad and a brake rotor having a disk, and a hat, and wherein the hat is bolted to the wheel. A hydraulic cylinder is adapted to push the inner brake pads into the disk surface, causing the floating caliper to move bringing the outer brake pad into contact with the disk. Finally, the rotor is made such that a complete 100 kilometer per hour, 0.9 gross vehicle weight braking causes the disk to expand in thickness by at least 0.15 mm and to cool to shrink in thickness, relative to its expanded thickness, by at least 0.1 mm within 60 seconds of the cessation of braking, in an ambient temperature of less than 30° C.

A method for producing a friction disc includes the steps: providing a carrier element, providing at least one friction lining; connecting the friction lining to the carrier element by an adhesive agent to form a composite material, wherein the carrier element is connected to the friction lining to form the composite material before the geometry of the friction disc is determined.

A brake pad includes a friction material and a backing plate which are coupled to each other. An apparatus for manufacturing the brake pad includes a forming device forming friction material powder in the form of the friction material and attaching the formed friction material to the backing plate in a forming process, a quality stabilization device heating and pressing the friction material, and a heat treatment unit heating the brake pad at a predetermined temperature.

A brake disk formed of a light weight ceramic and ceramic composite materials, the brake disk having a coating overlying at least a portion of the brake disk. The brake disk includes parallel surfaces wherein at least a portion of the parallel surfaces are coated with a coating material to increase wear and decrease corrosion. The coating over the brake disk includes multiple layers of the coating material, wherein the coating material includes coating material particles configured to construct a pattern of repetition that is consistent with a lattice structure when applied over the parallel surfaces of the brake disk.

The present disclosure relates a brake disc and a method of manufacturing the same, in which the depth of the coating layer containing a nitride is adjustable and corrosion resistance and wear resistance can be improved. A brake disc according to an embodiment of the present disclosure includes: a disc base material made of gray cast iron; and a coating layer formed on a surface of the disc base material and including a nitride produced as nitrogen is diffused into a ferrite matrix structure.

A method for producing friction discs for a, in particular radial, dual clutch, includes the following steps: providing a first disc ring with a first inner diameter, providing a second disc ring with a second outer diameter, wherein the second outer diameter is smaller than the first inner diameter, and processing the first disc ring and the second disc ring in a tool for producing the friction discs. The second disc ring is arranged within the first disc ring, and the second and the first disc rings are processed in the tool together.

In a method for producing a brake disc, a friction surface layer is sprayed onto the base body or onto an intermediate layer applied on the base body by cold gas spraying a particle mixture which consists 25 to 75% by weight of a metal matrix material and 75 to 25% by weight of a carbide material. The metal matrix material consists of an iron-based alloy, nickel-based alloy, titanium or titanium alloy. The carbide material consists of tungsten carbide, titanium carbide, iron carbide, silicon carbide, chromium carbide or niobium carbide.

Method and plant for manufacturing braking elements such as vehicle brake pads. The plant can comprise a first station that applies an adhesive to a first face of a metallic element; a second station that applies to the first face of the metallic element a block of friction material; a checking station that verifies the presence of the adhesive by detecting the gray level of a plurality of points of at least one zone of the first face; and a processing unit that compares the gray level detected for each point with a first threshold value, counts the number of points that have a gray level that satisfies a relationship (which is a function of the threshold value,) and compares such a value with a second threshold value to discard those metallic elements for which the percentage calculated does not correspond to the second threshold value.