Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1998-03-19
1999-12-28
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164101, 164103, B22D 1904, B22D 1916
Patent
active
060068191
ABSTRACT:
An aluminum-based composite member having an increased strength of bond between an aluminum-based body and a cast iron material portion which is incorporated into the aluminum-based body by casting is provided by an improved process. The following steps are employed in the process: a step of removing an oxide film on the surface of the cast iron material portion and activating such surface; a step of forming a protecting plated-layer having a thickness a in a range of 0.8 .mu.m.ltoreq.a.ltoreq.5 .mu.m on the surface of the cast iron material portion; a step of preheating the cast iron material portion in a reducing gas atmosphere and reducing an oxide on the surface of the protecting plated-layer; a step of vanishing the protecting plated-layer by a diffusing phenomenon and forming an aluminum-based alloy plated layer on the surface of the cast iron material portion by immersing the cast iron material portion into a molten aluminum-based alloy; a step of quenching the cast iron material portion in an inert gas atmosphere; and a step of incorporating the cast iron material portion into the aluminum-based body by casting.
Hata Tsunehisa
Itou Takeo
Nagase Katuya
Shimizu Hideo
Suzuki Norito
Honda Giken Kogyo Kabushiki Kaisha
Lin Kuang Y.
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