Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2005-05-10
2005-05-10
Dunn, Tom (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S126000, C164S133000
Reexamination Certificate
active
06889746
ABSTRACT:
A material for plastic working is produced by the steps of using a mold having a mold cavity (16) partially defined by an end surface of a stopper (13) for closing a molten metal inlet (101), teeming molten metal (10) into the mold cavity through the inlet and cooling the molten metal to thereby attain unidirectional solidification of the molten metal. Regulation of the cooling rate enables the mean grain size to be graded in the direction from the cooled face (B surface) to the opposing face (T surface) and the added components to increase in the same direction. It is possible to obtain a material for plastic working that has a selected portion exhibiting an excellent function.
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patent: 5989365 (1999-11-01), Yanagimoto et al.
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“Effect of Si grain size on wear resistance of Al-Si powder alloy”, 73rdFall Conference of the Japan Institute of Light Metals (Nov. 1987).
Fukuda Masashi
Hirano Kunio
Uchida Tomoo
Yanagimoto Shigeru
Dunn Tom
Lin I.-H.
Showa Denko K.K.
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