Nippon Steel Corporation

Kurosaki Refractories Co., Ltd.

Kawaso Electric Industrial Co., Ltd.

Kamogawa Industry Co., Ltd.

Shozo Shima

Yukio Nakamura

Keiichi Mori

Yoshitaka Hiraiwa

Shoji Iizuka

Masahiro Nakamura

Masao Nakano

Masanobu Kanayama

The present invention provides a mold additive for continuous casting which comprises adjusting an additive for stationary casting containing a flux base and, if necessary, a melting property regulator wherein it contains 4-30 wt % of MgO and 4-30 wt % of ZrO.sub.2 and CaO/SiO.sub.2 is 0.5-1.5.

Adjusting a mold additive for continuous casting

An apparatus for continuously measuring temperatures of molten metal including a thermocouple unit (A) and an immersion protection tube unit (B), wherein the thermocouple unit (A) comprises a thermocouple (1) having an end equipped with a temperature sensing element (8) and an opposite end connected to terminals (2), an insulator (9) of substantially one piece containing the thermocouple (1), a porcelain protection tube (6) of high airtightness containing the insulator (9), and a terminal box (3) having an extension sleeve (5) with which the upper part of the porcelain protection tube (6) is held and having a housing (20) which contains the terminals (2). The immersion protection tube unit (B) comprises an alumina-graphite protection tube (21), a holding sleeve (22) with a flange which is connected to the upper part of the alumina-graphite protection tube (21), and a connecting sleeve (26) connected with the holding sleeve (22). The porcelain protection tube is detachably inserted into the alumina-graphite protection tube (21) to allow easy removal of the thermocouple and alumina-graphite protection tube (21). Further, the alumina-graphite protection tube (21) is manufactured by a process of adding a resin type binder which has high carbonization yield to a compounding component formed of a mixture of graphite powder, a powder selected from and/or mixed with a powder of SiC derivatives, Si derivatives, ZrO.sub.2 --SiO.sub.2 derivatives, Al.sub.2 O.sub.3 --ZrO.sub.2 --SiO.sub.2 derivatives, and a powder of substantially granular and/or powdered alumina, and then subsequently kneading the mixture, forming it into a tube and sintering the formed tube.

Apparatus for continuously measuring temperature of molten metal and

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Chiba, Japan

Shozo Shima