Manufacturing method of solid-liquid coexistence state metal material, the device, manufacturing method and apparatus of semi-solid metal slurry

摘要

PROBLEM TO BE SOLVED: To provide an apparatus for producing semi-solidified metallic slurry with which further fine and uniform spheroidized grains are obtained and, the improvement of energy efficiency, the saving of producing cost, the improvement of mechanical properties, the simplification of casting process and the shortening of producing time can be realized.;SOLUTION: Molten metal is poured into a slurry-producing vessel disposed in a space part impressing electromagnetic field. The slurry-producing vessel is transported to out of the space part and the molten metal in the slurry-producing vessel is made to be the semi-solidified metallic slurry. Grain distribution having wholly uniform and fine spheroidized structure can be obtained in this slurry, and the mechanical properties of alloy can be improved. Nuclei-generating density on the wall surface of the slurry-producing vessel is remarkably increased only by stirring for short time at higher temperature than the liquidus and the grains can be spheroidized. The high quality semi-solidified metallic slurry can be produced for short time and has excellent cooperation property with the following process.;COPYRIGHT: (C)2004,JPO