Outside furnace refining method

Japanese: 炉外精錬法 - ろがいせいれんほう
Outside furnace refining method
A method of refining molten steel produced in converters or electric furnaces outside of these furnaces as necessary. Among the extra-furnace refining methods, those that use ladles are sometimes called ladle refining methods. Molten steel that has been melted and refined in the air using converters or electric furnaces is easily contaminated by gas components such as hydrogen, oxygen, and nitrogen, which can lead to product defects. In addition, technology for using steel on the consumer side is advancing, and quality requirements are becoming increasingly diverse and strict.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
転炉や電気炉などでつくられる溶鋼を,必要に応じてこれらの炉外で精錬する方法。炉外精錬法のうちで取鍋(とりなべ∥とりべ)を用いて精錬するものを取鍋精錬法と呼ぶこともある。転炉,電気炉などを用いて大気中で溶解,精錬を行った溶鋼は,水素,酸素,窒素などのガス成分による汚染を受けやすく,これが製品の欠陥につながる。また需要者側の鋼使用に関する技術も進み,品質に対する要求はますます多様になり厳しくなっている。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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