william kelly developed a method to mass-produce steel in america.
william kelly developed a method to mass-produce steel in america.
who developed a method to mass-produce steel in america?
william kelly
steel (with a carbon content between pig iron and wrought iron) was first produced in antiquity as an alloy. its process of production, wootz steel, was exported before the 4th century bc from india to ancient china, africa, the middle east and europe. archaeological evidence of cast iron appears in 5th-century bc china. new methods of producing it by carburizing bars of iron in the cementation process were devised in the 17th century. during the industrial revolution, new methods of producing bar iron by substituting coke for charcoal were devised and these were later applied to produce steel, creating a new era of greatly increased use of iron and steel that some contemporaries described as a new iron age. in the late 1850s, henry bessemer invented a new steelmaking process, that involved blowing air through molten pig iron to burn off carbon, and so to produce mild steel. this and other 19th-century and later steel making processes have displaced wrought iron. today, wrought iron is no longer produced on a commercial scale, having been displaced by the functionally equivalent mild or low carbon steel.
ferrous metallurgy
shōwa steel produced pig iron and steel, and the steel mill was soon surrounded by a large industrial complex of other factories to produce a variety of metal products. sumitomo steel pipe established a plant to produce steel pipes, and manchurian roll manufacturing company to produce steel mill rolls. to feed the furnaces, coal mines were established at fushun, 35 kilometers to the east, which also led to electric power plants, coal liquefaction plants, cement works, brick kilns. by the end of the 1930s, there were over 780 japanese industrial plants in fengtian province.
showa steel works