| 摘要 |
PURPOSE:To manufacture brake parts each having improved braking performance at the sliding part and improved mechanical properties at the hub part by embedding chilling blocks in a sand casting mold so that a formed hub part is surrounded with the blocks and by charging a molten metal having the composition of hypereutectic flake graphite cast iron into the mold. CONSTITUTION:When each of brake parts such as a hub drum and a hub rotor is manufactured, chilling blocks 8, 9 are embedded in a sand casting mold so that a formed hub part is surrounded by the blocks and a molten metal having the composition of hypereutectic flake graphite cast iron is charged into the mold. Cast iron rings coated with graphite may be used as the chilling blocks. Thus, integrated brake parts each having a flake graphite structure with high damping capacity at the sliding part and a high strength cast iron structure at the hub part are obtd.
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