DEVICE FOR PREPARING MOLTEN METAL, METHOD OF PREPARING MOLTEN METAL, DEVICE FOR DEGASSING OR REMOVING NON-METALLIC INCLUSIONS OF MOLTEN METAL, METHOD OF MANUFACTURING MOLTEN METAL, AND METHOD FOR DEGASSING OR REMOVING NON-METALLIC INCLUSIONS OF MOLTEN METAL

摘要

PROBLEM TO BE SOLVED: To provide a device and a method for degassing or removing non-metallic inclusions of a molten metal capable of efficiently removing hydrogen or non-metallic inclusions such as oxides contained in the molten metal. SOLUTION: The device for degassing or removing non-metallic inclusions of molten metal includes a container 10 for receiving molten metal, a gas introducing pipe 40 having a jetting hole 42 for jetting a working gas for removing hydrogen or non-metallic inclusions contained in the molten metal in the molten metal, a gas supply source for supplying the working gas to the gas introducing pipe. and a stirring means 50 for finely dispersing the working gas jetted from the jetting hole of the gas introducing pipe in the molten metal. The device is characterized by having an outside air regulating means for permitting the outward gas stream flowing out from a space over the molten metal formed over the surface of the molten metal to the outside of the container and regulating the inward air stream which is a stream of outside air existing outside the container flowing into the space over the molten metal. COPYRIGHT: (C)2009,JPO&INPIT