The automobile-used brake disc of method and disc brake of brake disc

摘要

The present invention relates to a method of making a brake disc comprising the following operating steps: a) providing a disc brake, comprising a braking band 2 made of grey cast iron or steel and provided with two opposite braking surfaces 2a, 2b, each of which defines at least partially one of the two main sides of the disc; b) depositing a material in particle form on the disc using a HVOF (High Velocity Oxygen Fuel) technique, or HVAF (High Velocity Air Fuel) technique or KM technique (Kinetic Metallization) to form a protective coating 3 which covers at least one of the two braking surfaces of the braking band, The material in particle form is composed of 70 to 95% in weight of tungsten carbide, 5% to 15% in weight of cobalt and 1% to 10% in weight of chromium.