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In making crucible steel, the blister steel bars were broken into pieces and melted in small crucibles, each containing 20 kg or so. This produced higher quality metal, but increased the cost. The Bessemer process reduced the time needed to make lower-grade steel to about half an hour while requiring only enough coke needed to melt the pig iron.
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The process also decreased the labor requirements for steel-making. Before it was introduced, steel was far too expensive to make bridges or the framework for buildings and thus wrought iron had been used throughout the Industrial Revolution. After the introduction of the Bessemer process, steel and wrought iron became similarly priced, and ...
Gerald Anderson Lawson (December 1, 1940 – April 9, 2011) was an American electronic engineer.Besides being one of the first African-American computer engineers in Silicon Valley, Lawson was also known for his work in designing the Fairchild Channel F video game console, leading the team that refined ROM cartridges for durable use as commercial video game cartridges.
The replacement of charcoal with coal in the steel-making process revolutionized the industry, and tied steelmaking to coal-mining areas. In the 1800s, making a ton of steel required a greater weight of coal than iron ore. Therefore, it was more economical to locate closer to the coal mines.
Rick Goodman is a video game designer and the founder and owner of the now-defunct Stainless Steel Studios. He is best known for the real-time strategy (RTS) games he designed, such as Age of Empires and Empire Earth.
U.S. Steel and Bethlehem Steel introduced the oxygen process in 1964. [3] By 1970, half of the world's and 80% of Japan's steel output was produced in oxygen converters. [3] In the last quarter of the 20th century, use of basic oxygen converters for steel production was gradually, partially replaced by the electric arc furnace using scrap steel ...
Steel is an alloy composed of between 0.2 and 2.0 percent carbon, with the balance being iron. From prehistory through the creation of the blast furnace, iron was produced from iron ore as wrought iron, 99.82–100 percent Fe, and the process of making steel involved adding carbon to iron, usually in a serendipitous manner, in the forge, or via the cementation process.