Production of longitudinally short steel ingot

Abstract

Abstract PURPOSE: To make the tendency toward unidirectional solidification much surer and produce a longitudinally short steel ingot of superior internal quality by packing heat resistant powder in the groove provided along the joined part of the outside circumferential part on the root end part side of a mold flask body and a molding board thereby shutting off the flow of the atmospheric air. CONSTITUTION: In a longitudinally short mold consisting of a molding board 1, a molding flask 2 and a heat insulating material 3, an outside flask 5 of an iron sheet is provided in a shelf shape on the board 1 slightly spaced from the mold 2 in such a way as to encircle the mold 2, thereby forming a groove around the root end side of the mold 2. Heat resistant powder 6 such as sand or castable refractories is packed and contained in this groove. The atmospheric air side of the gap S2 produced between the board 1 and the mold 2 after teeming of molten steel is shut off by this powder 6, and the flow of the atmospheric air produced by the gaps S1, S2 is prevented. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Setsuo Okamoto
• 👤 Yujo Marukawa
• 👤 Morio Kawasaki
• 👤 Hiroshi Kiguchi
• 👤 Takatoshi Hamana

Bibliographic Details