词汇 | bessemer converter etc |
词源 | Bessemer converter, etc. We might almost as fairly call the Bessemer process the Kelly process. This revolutionary method for converting pig or cast iron to steel is named after Englishman Henry Bessemer (1813–98), but it was discovered almost concurrently by American inventor William Kelly (1811–88). Bessemer, the son of a French artist, was already a respected metallurgist and the inventor of a machine used to reduce gold and bronze to powder when he began experimenting to pro- duce better and cheaper iron for cannons during the Crimean War. He started his work about the year 1854, being granted his first patent a year later, and in 1856 discovered the basic princi- ple involved in his process, which he described in his paper, “The Manufacture of Iron Without Fuel.” Bessemer’s secret was the removal of carbon and other impurities from pig iron by melting it in his Bessemer converter and forcing a blast of air through the molten metal. The Bessemer process, much im- proved today, produced far better steel more cheaply and faster than ever before, tripling English steel production within a few years after its introduction. |
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