METHOD OF MANUFACTURING FRICTION DISCS Russian patent published in 1995 - IPC

FIELD: automotive industry. SUBSTANCE: in accordance with the method, friction discs are sintered at a temperature of 800-830 C and cooled down to 200 C at a rate of 5-15 degrees per minute. The sintering range is selected so that the temperature of austenitization of the steel backing falls within this range so that a bainite structure, characterized by a better range of mechanical properties than the martensite of the annealed backing steel, is formed during the subsequent cooling in the specified way. Apart from that, a high sintering temperature is conducive to an increase in the strength of adhesion of the friction material by 30-40 %. EFFECT: high adhesion of friction material and improved strength of the steel backing of the friction disc. 1 cl, 1 tbl