Miba Sintermetall Aktiengesellschaft

Gerhard Hartner

Karl Ammer

Rudolf Geissler

A process is described for manufacturing a friction ring for use in a clutch or brake. The friction ring comprises a friction lining provided on at least one peripheral surface of a conical or cylindrical carrying ring, which has been formed from a flat sheet metal blank after coating comprising a power mixture has been formed on the flat sheet metal blank. The process comprises providing a flat sheet metal blank, admixing a curable synthetic resin binder to the powder mixture to provide a binder-containing mixture, applying the binder-containing mixture to the blank to form a coating thereon, partly setting the coating, subsequently shaping the blank with the coating to form the carrying ring, and curing the coating on the carrying ring to form the friction lining.

Process of manufacturing a friction ring for use in a clutch or brake

A process is described for manufacturing a friction ring for use in a clutch or brake. Said friction ring comprises a sintered friction lining that is provided on at least one peripheral surface of a conical or cylindrical carrying ring, which has been formed from a flat sheet metal blank after a coating comprising a sinterable powder mixture has been formed on the flat sheet metal blank. In order to permit a shaping of the sheet metal blank independently of the ductility of the sintered friction lining, it is proposed that the sinterable powder mixture for making the friction lining is mixed with an expellable synthetic resin binder before said mixture is applied to the flat sheet metal blank to form said coating, said coating is set, the sheet metal blank provided with said coating is shaped to form the friction ring when said coating has been set, and the friction lining is subsequently sintered while or after the synthetic resin binder is expelled at least in part.

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Bad Wimsbach-Neydharting, Austria

Gerhard Hartner