| 摘要 |
<p>An asbestos-free disc brake device for automobiles and similar vehicles is provided by designing the brake disc (1) with a central cast-iron body (2) with a hub portion (3) integral with a surrounding peripheral edge portion (4), the opposite lateral faces of which are cast together with wearing linings (5) having a metallic surface layer (6) with considerably increased wearability, while each of the brake blocks (7) consists of a rear plate (8) formed from steel and being cast integral with a wearing part (9) made from a cast-iron alloy of increased wearability. In the manufacturing of brake discs (1) and brake blocks (4) the wearing linings of the brake discs (1) formed as separate wearing plates and the rear plates (8) of the brake blocks (7) formed as core elements, respectively, are inserted at one side of uniform mould parts made from compressed sand to form disposable casting moulds stacked on line in an automatically controlled casting plant. The wearing linings (5) of the brake discs with wear-resistant surface layers may be manufactured by spray forming, using the so-called ''Osprey''-technology.</p> |
