Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1992-07-07
1994-05-31
Batten, Jr., J. Reed
Metal founding
Process
Shaping liquid metal against a forming surface
164114, B22D 1302, B22D 2720
Patent
active
053160681
ABSTRACT:
A casting is produced by centrifugal casting in which molten metal of gray cast iron is poured into a cavity formed in a mold during rotation of the mold under centrifugal force. The casting comprises a gray cast iron region and a spheroidal graphite cast iron region from which the graphite structure is gradually transformed toward the gray cast iron region through an intermediate region of vermicular graphite. The spheroidal graphite region and the intermediate region are formed by a reaction of the molten metal with spheroidizing agent in the cavity during rotation of the mold and solidification of the molten metal. The spheroidizing agent is provided in the cavity to a position where the casting is to be increased in strength and abrasion resistance. The spheroidizing agent can be introduced along with the molten metal through the pouring gate into the mold cavity to a defined position of casting.
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English Abstract for JP-62-110854 and JP-62-19225.
A. D. Merriman, A Dictionary of Metallurgy, "Cast Iron", MacDonald & Evans, Ltd., 1958, pp. 30-31.
Akita Norihiro
Ishii Masami
Kurikuma Tsutomu
Makimura Yukuo
Yagi Wataru
Aisin Seiki Kabushiki Kaisha
Batten, Jr. J. Reed
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