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born-engelsforsbanan - stål/OT (Bana)

av Anders Sandgren, Tuesday, July 22, 2008, 08:52 (6069 dagar sedan) @ Kurt Möller

Han köpte in sig i Henry Bessemers patent med 20%. Bessemer lyckades aldrig göra någon egen lyckad blåsning, men hade patenterat principen 1855.
Principen hade även patenterats i USA av amerikanen William Kelly 1857, han kom dock på obestånd och tvingades sälja sitt patent till Bessemer.
Även engelsmannen Robert Forrester Mushet bidrog till den industriella stålutvecklingen. Han skall f.ö vara det förste att producera järnvägsräls i stål (1857).
Det var trots allt i Edsken som den första Bessemer-blåsningen som resulterade i användbart stål skedde.
Principen att oxidera kolet med luft var dock känd av kineserna redan på 1000-talet.

Hela tråden:

 

Time: 197
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Time: 829
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE (mlf2_akismet_rating.spam = 1 OR mlf2_b8_rating.spam = 1)
Time: 968
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27) AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0)

Total time: 2005