There is provided a sintered friction material for railway vehicles that has excellent frictional properties and wear resistance even in a high speed range of 280 km/hour or more. The sintered friction material for railway vehicles is a green compact sintered material containing, in mass %, Cu: 50.0 to 75.0%, graphite: 5.0 to 15.0%, one or more selected from the group consisting of magnesia, zircon sand, silica, zirconia, mullite, and silicon nitride: 1.5 to 15.0%, one or more selected from the group consisting of W and Mo: 3.0 to 30.0%, and one or more selected from the group consisting of ferrochromium, ferrotungsten, ferromolybdenum, and stainless steel: 2.0 to 20.0%, with the balance being impurities.

A disc/brake friction torque for railway vehicles consisting of at least one pad comprising at least one friction element and a disc. The friction element is made of a sintered material comprising copper, iron, graphite, 0.02 to 1.5% by weight of molybdenum, 1 to 3% by weight of chrome and a porosity ranging from 20 to 35%; and the disc is made of cast iron comprising 0.05 to 2% by weight of chrome, 0.05 to 2% by weight of molybdenum, 0.1 to 2% by weight of nickel.

A clutch friction member for a friction clutch includes a main friction member of a base material; one or more engagement members arranged along the main friction member for engagement with a driving or driven member, and one or more friction components evenly distributed throughout the base material of the main friction member.

A brake pad having a surface coating operable to enhance the bedding-in process during normal operation. The surface coating may be formulated using one or more materials found in a friction lining of the brake pad. The surface coating may be formulated using only non-metal materials.

A method for producing a brake disk for a wheel brake of a land vehicle includes laser depositing a duplex steel anti-corrosion layer to an axial friction side of a main body produced from gray cast iron at a surface speed of more than 10 m/min and applying an anti-abrasion layer to the anti-corrosion layer.

[OBJECT]

The present invention provides a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition, which is able to suppress an occurrence of noise just before a vehicle stops, while satisfying laws and regulations relating to the required amount of the content of the copper component.

[MEANS TO SOLVE THE PROBLEM]

The friction material for the disc brake pad is manufactured by forming the NAO friction material composition that is free of the copper component, the friction material composition practically does not include an iron component but includes 15-22 weight % of a non-whisker-like titanate, relative to the total amount of the friction material composition, as a titanate, 15-25 weight % of zirconium oxide with the average particle diameter of 1.0-4.0 μm, relative to the total amount of the friction material composition, as the inorganic friction modifier, and 4-6 weight % of cleavable mineral particles, relative to the total amount of the friction material composition, as the inorganic friction modifier.

A friction material is disclosed comprising a binding composition based on a hydraulic binder and its use in brake pads and industrial applications.

Magnet assemblies for electromechanical assemblies of elevator systems are described. The magnet assemblies include a magnet and first and second block assemblies arranged on opposite sides of the magnet. In some configurations, the block assemblies each include a respective friction engagement surface and are formed of layers of sheet metal, with a portion of the layers having blade teeth that form a friction engagement surface for engagement with a guide rail. In some configurations, each of the block assemblies are formed from powder metal sintering and include a monolithic tooth configuration configured to form a friction engagement surface for engagement with a guide rail. In some configurations each of the block assemblies includes an abrasive coating configured to form a friction engagement surface for engagement with a guide rail.

The present invention comprises a coating, in particular for brake discs, brake drums and clutch discs, and also a brake disc for a disc brake or a brake drum for a drum brake or a clutch disc for a clutch, a disc brake or drum brake or clutch itself and also a method for producing a coating in particular for brake discs, brake drums and clutch discs, and the use of a coating. The coating has a first layer, which comprises a metal-based material, which contains less than 20% by weight tungsten carbide or other carbides, and a second layer, which is applied to the first layer and comprises a tungsten-carbide-containing material, which contains 20% by weight to 94% by weight tungsten carbide, wherein the first and the second layers are thermally sprayed coatings.

Friction linings which contain more than 5 wt. % aluminum in the form of Al metal (powder) or of an Al alloy are suitable to ensure sufficiently high friction coefficients at little wear when combined with aluminum-containing brake disks or rotors.