Shinagawa Refractories Co., Ltd.

Masamichi Takai

Osamu Nomura

Toshio Horiuchi

Shinsuke Inoue

Takashi Yamamura

Akira Shiranita

Nobuo Ayuzawa

Hidetaka Ogino

Masaru Kurisaki

Kenki Ishizawa

An object of the invention is to provide a casting nozzle in which attachment and deposition of alumina or the like can be prevented while a drift of molten steel can be prevented. The casting nozzle according to the invention is characterized in that the casting nozzle has a molten steel flow hole portion in which 'a plurality of independent protrusion portions and/or concave portions' are disposed so that each of the protrusion portions and/or concave portions has a size satisfying the expression (1): H&#x2267;2 mm and the expression (2): L&#x3e;2&#xd7;H mm [in which 'H' shows the maximum height of the protrusion portion or the maximum depth of the concave portion, and &#x201c;L&#x201d; shows the maximum length of a base portion of the protrusion portion or concave portion].

Casting nozzle

A nozzle for continuous casting which is prevented from clogging due to alumina deposition is disclosed, wherein the inner wall member is made of a refractory material having a carbon content of 1% to 10% by weight; a material other than carbon in the refractory material has a grain size of not more than 420 .mu.m; the inner wall member is integrally molded with the outer nozzle body to form an integral structure; and said inner wall member has a thickness of 2 mm to 12 mm.

Nozzle for continuous casting

Highly corrosion resistant .alpha.-sialon-like sintered body and process

Growing community of inventors

Tokyo, Japan

Masamichi Takai