| 摘要 |
<p>In a brake disc for a disc brake device for automobiles and similar vehicles considerably increased hardness and wearability has been imparted to the opposite side faces (5) of a mainly disc-shaped cast-iron body (2), either through a direct change of structure in the surface zones (7) or through the application to these surface zones of wearing linings (26), having a metallic surface layer of a significantly increased hardness and wearability. The increased hardness and wearability can be produced by exposing the side faces (5) to accelerated cooling or injection hardening by diffusion of an additive into the surface zones (7) which can then directly be provided with wearing linings (26) using spray forming ("Osprey" process) or friction welding, using a material of increased hardness and wearability.</p> |
