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AssigneeSchwabische Huttenwerke GmbH
InventorsRainhard Laag, Gunther Schwarz, Manfred Heinritz
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A metallic cast material for friction bodies in acceleration or deceleration devices, particularly in the brake or clutch systems of road or rail vehicles, is produced from the iron/aluminum/carbon tertiary group so that the material is largely in the intermetallic phase having an ordered crystal lattice structure, and free carbon in lamellar, sphoroidal or vermicular form is present therein. The proportion of aluminum in the alloy is between 20 and 28% by weight, preferably 24% by weight. The material may be melted and cast open to the air. Solid or internally ventilated brake discs are mentioned as appropriate friction bodies. The friction bodies are lighter, more resistant to corrosion and wear, have a higher alternate bending fatigue strength and are at least as easily workable as previously known friction bodies made from ferrous materials.
A metallic cast material of a friction body in a brake system or a clutch system of a vehicle for transmitting power in acceleration or deceleration devices, wherein the cast material is an alloy of the iron/aluminum/carbon ternary group, and the alloy is substantially in an intermetallic phase comprising an ordered crystal lattice structure and free carbon in lamellar form.
A friction body for transmitting power in acceleration or deceleration devices, wherein the friction body comprises a metallic cast material comprising an alloy of the iron/aluminum/carbon ternary group, wherein the alloy comprises between approximately 20% and 28% by weight aluminum and is substantially in an intermetallic phase.
A friction body for transmitting power in acceleration or deceleration device, wherein the friction body comprises a metallic or ceramic base body to which a friction layer is applied by thermal spray metallization, rolling, or friction welding, the friction layer is a metallic material comprising an alloy of the iron/aluminum/carbon ternary group, wherein the alloy comprises between approximately 20% and 28% by weight aluminum and is substantially in an intermetallic phase.
A method of manufacturing a metallic material of a friction body for transmitting power in acceleration and/or deceleration devices, the material comprising an alloy of the iron/aluminum/carbon ternary group in an intermetallic phase, the method comprising adding the aluminum in a solid state to the iron while the iron is in a liquid state, wherein the alloy comprises between approximately 20% and 28% by weight aluminum.
Dependencies are inferred from the claim text.