Method of manufacturing maraging steel and method of refining inclusions

摘要

Provided is a method of producing maraging steel and a method of making Ti-based inclusions finer and making the sizes of Ti-based inclusions that may differ at different locations in the steel ingot more uniform. A method of producing a maraging steel by using vacuum arc remelting that uses a vacuum arc remelting apparatus at least includes a steel ingot production step of producing a steel ingot by melting a consumable electrode made of maraging steel in a crucible of the apparatus, and in this method, the steel ingot production step includes cooling the steel ingot with rare gas introduced between the steel ingot and the crucible.