The invention relates to a method for improving braking performance of a microporous friction material under wet conditions. A hydrophobic agent is added into the components for preparing microporous friction material. The microporous friction material is prepared from the following raw materials in percentage by weight: 10%-20% of nano-silica modified phenolic resin, 4%-14% of butadiene-styrene rubber, 5%-15% of glass fiber, 2%-11% of aramid pulp, 4%-15% of aluminum borate whisker, 4%-10% of hydrophobic agent and 3%-8% of calcium silicate, 1%-8% of artificial graphite, 2%-8% of coke, 2%-7% of mica, 5%-10% of cryolite and 4%-10% of diatomite.

The disclosure relates to a friction brake body for a friction brake of a motor vehicle, in particular a brake disc, wherein the friction brake body comprises a base body made from gray cast iron, and at least one wear resistant layer formed at least in areas on the base body. The wear resistant layer is a laser alloyed or laser dispersed edge layer of the base body and comprises at least one additive.

A friction brake body for a friction brake of a motor vehicle, in particular a brake disk, includes a base body made in particular from gray cast iron and having at least one wear resistant layer formed on a friction contact surface of the base body. The wear resistant layer is made from ferritic-austenitic steel and includes an incorporated hard material particle, in particular finely distributed hard material particle.

The invention relates to a method for improving braking performance of a microporous friction material under wet conditions. A hydrophobic agent is added into the components for preparing microporous friction material. The microporous friction material is prepared from the following raw materials in percentage by weight: 10%-20% of nano-silica modified phenolic resin, 4%-14% of butadiene-styrene rubber, 5%-15% of glass fiber, 2%-11% of aramid pulp, 4%-15% of aluminum borate whisker, 4%-10% of hydrophobic agent and 3%-8% of calcium silicate, 1%-8% of artificial graphite, 2%-8% of coke, 2%-7% of mica, 5%-10% of cryolite and 4%-10% of diatomite.

A brake drum for a vehicle includes a friction ring and a drum body. The friction ring has grooves arranged on a radial outer surface along a circumference, and a coating formed on the grooves. The drum body is cast onto the radial outer surface of the friction ring so that the grooves are filled with a material of the drum body. The grooves include first grooves and second grooves. A first axial segment is formed at the friction ring in which the first grooves are introduced so that the first grooves are inclined relative to a first axial end of the friction ring. A second axial segment is formed at the friction ring in which the second grooves are introduced so that the second grooves are inclined in a direction which is opposite to that of the first axial segment. Each of the grooves have undercuts.

A brake disk includes a basic material formed of gray cast iron, a decarburized layer formed on the basic material and formed via decarburizing, and a nitride compound layer formed on the decarburized layer and formed via nitriding of a nitride. A method of manufacturing a brake disk includes preparing a disk formed of gray cast iron, performing heat treatment of the disk to form a pre-decarburized layer and a base layer of gray cast iron over which the pre-decarburized layer is formed, and nitriding a portion of the pre-decarburized layer to form a nitride compound layer including a nitride and a decarburized layer over which the nitride compound layer is formed.

The present invention relates to a method and an apparatus for manufacturing a brake pad, which are configured to stabilize quality of the brake pad. The present invention provides a method of manufacturing a brake pad including a friction material and a backing plate which are coupled to each other, the method including: a preliminary process of preparing friction material powder and the backing plate; a forming process of forming the friction material powder in the form of the friction material and attaching the friction material to one surface of the backing plate; a quality stabilization process of heating and pressing the friction material after the forming process is completed; a heat treatment process of heating the brake pad at a predetermined temperature after the quality stabilization process is completed; and a grinding process of grinding the friction material.

The present invention discloses a vibration-damping and noise-reducing brake disc, where the vibration-damping and noise-reducing brake disc includes an intermediate disc having an outer side and a braking ring which surrounds the outer side of the intermediate disc. Two opposite surfaces of the braking ring are frictional surfaces provided with at least one laser scanning strip, where the laser scanning strip is obtained or formed by laser quenching and hardening treatments of the two frictional surfaces by a laser machine, for changing the physical and mechanical properties of the braking ring, such as the surface and inside hardness, residual stress distribution on the frictional surfaces, and the inside micro-structures of the braking ring, so as to suppress the generation of frictional vibration and noise during braking operations. The vibration-damping and noise-reducing brake disc of the present invention has stable coefficients of friction in braking operations, therefore, the occurrence of frictional noise and vibrations of the brake disc can be reduced, and the operational performance of the vehicle with such brake discs can be improved.

A tunnel oven and associated method for the heat treatment of friction elements, and in particular of braking elements such as brake pads is provided. The friction elements are arranged on a resting surface of a conveyor device, are moved between an inlet opening and an outlet opening of the tunnel oven, and are heated by irradiation by at least one heating device. The heating device includes a radiating plate made from stainless steel arranged facing the conveyor device and heated by electromagnetic induction by means of at least one inductor arranged facing the radiating plate and spaced apart therefrom on the side opposite to the conveyor device. A cooling air flow for the braking elements between the resting surface and the radiating plate is directed in counterflow to a feeding direction of the conveyor device.

A disc brake includes a brake disc made of light metal and a brake pad. The brake disc includes a brake track having formed therein a plurality of depressions which are distributed over a surface of the brake track. The brake disc is formed from a hypereutectic aluminum silicon alloy, which has a silicon content of 13 to 21 wt. % and a maximum content of 0.3 wt. % of copper. The brake pad is configured to act on the brake disc and includes a NAO friction material.