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Steelmaking. Steelmaking is the process of producing steel from iron ore and/or scrap. In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur, and excess carbon (the most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon, and vanadium are added to produce ...
The US iron and steel industry has paralleled the industry in other countries in technological developments. In the 1800s, the US switched from charcoal to coal in ore smelting, adopted the Bessemer process, and saw the rise of very large integrated steel mills. In the 20th century, the US industry successively adopted the open hearth furnace ...
Japanese swordsmithing. Japanese swordsmithing is the labour-intensive bladesmithing process developed in Japan beginning in the sixth century for forging traditionally made bladed weapons ( nihonto) [1] [2] including katana, wakizashi, tantō, yari, naginata, nagamaki, tachi, nodachi, ōdachi, kodachi, and ya (arrow) .
Bessemer process. The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace. The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron. The oxidation also raises the temperature ...
In a recent 50/50 joint venture, ArcelorMittal and Nippon Steel and Sumitomo Metal bought the ThyssenKrupp AG Calvert, Alabama steel complex for $1.55 billion. The plant has a running capacity of ...
FINEX (steelmaking process) FINEX is the name for an iron making technology developed by former Siemens VAI (now Primetals Technologies) and POSCO. Molten iron is produced directly using iron ore fines and non-coking coal rather than traditional blast furnace methods through sintering and reduction with coke.
Basic oxygen steelmaking ( BOS, BOP, BOF, or OSM ), also known as Linz-Donawitz steelmaking or the oxygen converter process, [ 1] is a method of primary steelmaking in which carbon-rich molten pig iron is made into steel. Blowing oxygen through molten pig iron lowers the carbon content of the alloy and changes it into low-carbon steel.
The Association for Iron and Steel Technology (AIST) is a non-profit professional organization focused on promoting the international iron and steel industry through networking and education. [1] [2] The AIST has over 17,500 members in over 70 countries, though the majority of its members are from North America, reflecting its historical link ...