Brake element and a preparation process therefor

Metal founding – Process – Shaping liquid metal against a forming surface

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164 72, B22C 300, B22D 2700

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052496198

ABSTRACT:
A braking element which has an uninterrupted, unitary structure and is prepared in one step is provided. By coating a molding surface used to mold the braking element with a certain amount of nodularizing agent, the molten iron poured into the mold is transformed into an uninterrupted, unitary structure. The amount of nodularizing agent is such that a ductile iron support surface results from the nodularizing agent inoculating the initially poured iron. However, the amount is also such that a grey iron friction braking surface results from the subsequently poured iron which does not come in contact with the nodularizing agent.

REFERENCES:
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patent: 3415307 (1966-03-01), Schuh et al.
patent: 3658115 (1972-04-01), Ryntz, Jr. et al.
patent: 3703922 (1972-11-01), Dunks et al.
patent: 3765876 (1973-10-01), Moore
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patent: 4760900 (1988-08-01), Shima et al.
patent: 4779668 (1988-10-01), Nagel et al.
Metals Handbook, Ninth Edition vol. 1, Properties and Selection: Iron and Steel, American Society for Metals, Metals Park, Ohio. Sep. 1978; pp. 11-56.

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