Patent ID: 6112802
Filing Date: 2000-09-05
Classification: B22D,F02F,F05C

Abstract:
A process for producing an intermetallic bond between an engine component made from an aluminum alloy having a first alloy composition and a reinforcing component made from austenitic cast iron, said components being bonded to each other by casting technology, comprising the following process steps:(a) Annealing the reinforcing component in a furnace atmosphere with oxidizing and reducing gas components to at least partly decompose graphite lamellae or graphite particles disposed within the area of the surface of the reinforcing components;(b) Immersing the reinforcing component in a melt bath consisting of an aluminum alloy having an alloy composition different from the first alloy composition to form an intermetallic bonding layer; and(c) Removing the reinforcing component from the immersion bath, placing the reinforcing component in a casting mold, and directly thereafter pouring the aluminum alloy having the first alloy composition around the reinforcing component.