Abstract
Aluminum alloy castings have superior properties that is low-weight, low production energy, Reusability and so on. On the other hand, Electroless nickel plating layer is formed to hard surface by the heat-treatment. We have tried to find the possibilities of the low-cost hybridizing process that make hard surface on the aluminum alloy castings, and we have examined the casting process that combines the aluminum alloy castings with the aluminum base-plate which has the electroless nickel plating layer. As a result, we found the adequate temperature condition of pre-heated mold and molten metal for the hybridizing process.
