| 摘要 |
<p>The present invention relates to a method for manufacturing alloy steel and, more specifically, to a method for manufacturing alloy steel comprising the steps of tapping the blown steel; injecting molten materials in which the alloy steel is molten in the molten steel; and absorbing nitrogen after injecting the molten materials in the molten steel. The present invention provides the method for manufacturing alloy steel capable of controlling components added in the alloy steel by injecting the nitrogen in the molten materials in which the alloy steel is molten, preparing the molten alloy steel having a large amount of nitrogen, injecting the same in the molten steel, and using a vacuum degassing treatment device (RH) or a ladle furnace (LF) in a secondary process.</p> |
