Abstract: Two tundish transport trucks move in alternate relation between a pouring position and a tundish preheating position. A swivel table is disposed at the forward end of a transport rail which extends laterally from the pouring station for guiding the tundish transport truck for movement thereon. Provided on the swivel table are a pair of swivel rails such that one of the rails is connected to the travel rail and the other is positioned in corresponding relation to a tundish preheating device. When the swivel table turns with the tundish transport trucks mounted on corresponding swivel rails, a preheated tundish is delivered to the pouring position and a used tundish is subjected to repair and preheating so as to be ready for a next tundish changing operation.

Abstract: Refining method of molten metal which employs a refining apparatus provided with a tiltable refining vessel, a tuyere formed therein for blowing inert gas and/or flux or further sometimes additive alloy component(s), with the aid of inert gas into the molten metal, and a suitable number of electrodes for heating the molten metal and flux, for the purpose of performing a first refining process of carrying out the heating of the molten metal and the flux with the electrodes and a second refining process of tilting the vessel for blowing into the molten metal insert gas and others from the tuyere, whereby harmful or unnecessary metallic and/or non-metallic impure components can be removed for improving the quality of the article.

Abstract: Refining method of molten metal which employs a refining apparatus provided with a tiltable refining vessel, a tuyere formed therein for blowing inert gas and/or flux or further sometimes additive alloy component(s), with the aid of inert gas into the molten metal, and a suitable number of electrodes for heating the molten metal and flux, for the purpose of performing a first refining process of carrying out the heating of the molten metal and the flux with the electrodes and a second refining process of tilting the vessel for blowing into the molten metal inert gas and others from the tuyere, whereby harmful or unnecessary metallic and/or non-metallic impure components can be removed for improving the quality of the article.