Nippon Steel Corporation

Kawasaki Jukogyo Kabushiki Kaisha

Katsuhiko Kawamoto

Hiroyuki Nakashima

Shogo Matsumura

Toshihiro Kosuge

Haruo Ohguro

Ryuuzou Hanzawa

Yukio Morimoto

Hideo Kaneko

Hatsuyoshi Kumashiro

Hiroshi Iwasaki

Tsutomu Fujii

Hiroyuki Kawai

Youji Ao

Seishiro Saita

Tatsuhito Matsushima

Masayuki Inoue

A continuous casting apparatus comprises continuously supplying molten metal from a tundish to a cooled mold having an inlet and an outlet at least through a break ring, forming a cast section by continuously cooling the molten metal in the mold and starting the solidification of the molten metal below its surface, and intermittently withdrawing the cast section with respect to the mold through its outlet. During continuous casting, a sealing gas having a pressure higher than atmospheric and being soluble in the molten metal is invariable supplied to the entirety of the contact area of the mold and the break ring.

Apparatus for continuous casting

A continuous casting method includes the steps of continuously supplying molten metal into a mold through at least one feed nozzle connected to the mold through a break ring, with the feed nozzle, the mold and the break ring forming at least a portion of a continuous casting apparatus, and intermittently withdrawing a cast piece formed from the molten metal in the mold thereby creating pressure in a space formed at a connecting point between the break ring, the mold and the cast piece as a result of the withdrawal from the mold. A shield means is placed to seal-off space between the at least one feed nozzle, and the mold to prevent entry of gas into the continuous casting apparatus and the pressure is reduced in the sealed-off space to thereby eliminate a pressure differential between the pressure in the sealed-off space and the pressure created in the space formed at the connecting point between the break ring, the mold and the cast piece during the intermittent withdrawal from the mold.

Horizontal continuous casting method and apparatus

Growing community of inventors

Hikari, Japan

Katsuhiko Kawamoto