Nisshin Steel Co., Ltd.

Ryuuji Ninomiya

Yasuhiro Yamamoto

Atsushi Komatsu

Atsushi Andoh

Yasutaka Kawaguchi

Katsuyuki Takezaki

A molten zinc alloy, which contains 4&#x2013;22 mass % Al, 1&#x2013;7 mass % Mg and optionally one ore more of Ti, B and Si at very small ratios, is held at a temperature Thigher than (a solidification-beginning temperature T+85&#xb0; C.) for homogenization, and then cooled down to a temperature Tequal to (T+20&#x2013;65&#xb0; C.). After the molten alloy is poured in a mold, it is naturally cooled and solidified to an ingot, while its upper part is being heated. Once an upper surface of the zinc alloy in the mold begins to solidify, it is optionally cooled with water. The produced ingot has a structure without cracks or cavities, so that it is safely fed to a molten pool for replenishment.

Growing community of inventors

Ageo, Japan

Ryuuji Ninomiya