Showa Denko K.k.

Tomoo Uchida

Shigeru Yanagimoto

Masashi Fukuda

Kunio Hirano

Daisuke Endo

A forging device capable of producing a high-quality forged article while simplifying the structure is provided. The forging device of the present invention includes a punch, a diehaving a shaping holeand a helical blade portionformed on an inner peripheral surface of the shaping hole, a back pressure generation mechanism, and a back pressure transmission mechanism. The back pressure transmission mechanism includes a rotation-side transmission member having a back pressure plateand a non-rotation-side transmission member. The back pressure plateis arranged in the shaping holein a fitted manner. When a forging material Wis driven into the shaping holeand the back pressure plateis pressed downward by the metallic material, the back pressure plateis guided by the blade portionof the shaping holeand thereby descends while rotating about the axis and a back pressure by the back pressure generation mechanismis applied to the metallic material via the back pressure transmission mechanism.

Forging device

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.

Growing community of inventors

Kitakata, Japan

Tomoo Uchida