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US 12,123,469 B2Granted
Brake disk and method for manufacturing the same
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsMin Gyun Chung, Jai Min Han, Yoon Joo Rhee, Byung Chan Lee, Jae Young Lee, Yoon Cheol Kim
Life of this patent
Estimating the term…
Abstract
Disclosed are a brake disk and a method for manufacturing the same. In particular, the brake disk may include a friction surface formed of cast iron, and the friction surface of the brake disk is divided into a plurality of sections in a circumferential direction. Preferably, an average of the numbers per unit area of eutectic cells formed on surfaces of the sections may not be greater than 300 ea/cm2.
Claims3
A method of manufacturing a brake disk, comprising:
- casting a brake disk comprising a friction surface;
- and
- grinding the friction surface of the brake disk in a thickness direction such that a number per unit area of eutectic cells formed on the friction surface of the brake disk is not greater than about 300 ea/cm2, and a deviation of the number per unit area of the eutectic cells formed in sections of the brake disk is not greater than about 60 ea/cm2.
Dependencies are inferred from the claim text.