. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . INFLUENCE OF DETAIL OF ^L\NUFACTURE 373. Fia. 25S. — Bessemer Converter in Full Blast. (Am. Tech. Soc.) 374 STEEL RAILS The molten pig iron contains a large proportion of carbon which is almostburned out during the blow. The combustion of this carbon increases the heatof the metal and the flame, shown in Fig. 258, is at first red, but rapidly be-comes brighter until it can hardly be looked upon by the naked eye. The suddendropping of the flame after nine or ten m
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . INFLUENCE OF DETAIL OF ^L\NUFACTURE 373. Fia. 25S. — Bessemer Converter in Full Blast. (Am. Tech. Soc.) 374 STEEL RAILS The molten pig iron contains a large proportion of carbon which is almostburned out during the blow. The combustion of this carbon increases the heatof the metal and the flame, shown in Fig. 258, is at first red, but rapidly be-comes brighter until it can hardly be looked upon by the naked eye. The suddendropping of the flame after nine or ten minutes gives evidence that the carbonis almost burned out, and the operator turns the converter down and shutsoff the blast. Spiegeleisen or ferromanganese is then added to recarbonize themetal. Mr. Wickhorst* gives the following description of the process of makingBessemer steel at the Maryland Steel Company: The metal from the blastfurnace was poured into an 85-ton receiver, from which it was weighed andpoured into an 18-ton converter. In addition to the hot metal from the blastfurnace, cupola metal was used, which ordinarily is the same metal that hasbeen run in
Size: 1268px × 1971px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913
