Showa Denko K.k.

Kunio Hirano

Shigeru Yanagimoto

Masashi Fukuda

Tomoo Uchida

An apparatus for casting an ingot includes a molten metal reservoir () positioned at an upper portion, a casting chamber () positioned at a lower portion and a partition wall () between the reservoir and the chamber, a spruce () formed in the partition wall, an opening/closing plug () for opening and closing the sprue and control means for controlling an opening and closing operation of the plug. The casing chamber is defined in a mold () that includes a lower mold member (), a side mold member () and the partition wall () that constitutes an upper mold member. At least one of the lower mold member, side mold member and upper mold member includes a plurality of divided sections () in accordance with a shape of a cast ingot C.

Apparatus and method for casting metal

A material for plastic working is produced by the steps of using a mold having a mold cavity () partially defined by an end surface of a stopper () for closing a molten metal inlet (), teeming molten metal () 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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Kitakata, Japan

Kunio Hirano