OBM - Observation Memories

…The size of a converter is expressed by the amount of steel it can refine at one time, and is called a “ton converter.” The converter steelmaking process originated from a patent obtained by H. Bessemer of England in 1856, and there are other processes such as the Thomas process, the LD process, the OBM process, and the combined blowing process, each of which has played its own role over the years. The Bessemer process is also called the acid bottom blowing converter process. …

*Some explanations of terms that mention "OBM" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…転炉の大きさは1回に精錬できる鋼の量で表し，何t転炉などと呼ぶ。　転炉製鋼法は，1856年イギリスのH.ベッセマーが得た特許が発祥で，ほかにトーマス法，LD法，OBM，複合吹錬法などがあって，時代によりそれぞれの役割を果たしてきた。ベッセマー法は酸性底吹転炉法とも呼ばれている。…

※「OBM」について言及している用語解説の一部を掲載しています。

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