Patent ID: 8550145
Filing Date: 2013-10-08
Classification: B28B,B29B,B29C,B29K,C04B,C22C,F16D,Y02P,Y10T

Abstract:
1. A method of forming a brake drum for a vehicle by impregnating a preform with a metal with the preform having an inner surface and an opposing outer surface and formed from a composition having ceramic particles and ceramic fibers utilizing a mold having a cavity, said method comprising the steps of: mixing the composition; shaping the composition into a cylindrical configuration after the composition has been mixed to define the preform having a continuous inner surface; positioning the preform within a portion of the cavity of the mold; heating the metal to form a molten metal; injecting the molten metal into the cavity of the mold adjacent the outer surface of the preform under pressure; infiltrating the preform with the molten metal through the outer surface to the inner surface of the preform; and cooling the molten metal to solidify the molten metal and define the brake drum having a wear surface formed of the infiltrated inner surface with exposed metal, ceramic particles and ceramic fibers.