. Railway maintenance engineering, with notes on construction . B. Rail from an Early Pass in Roughing C. Same Rail as Shown in B after FurtherRolls. Rolled from Bloom shown in .4. A. Cross-section of 8X8-in. Bloom. D. Finished Rail from Same Ingot as Bloom and Pieces from Roughing Rolls. Fig. 74.—Sections from Bloom to Finished Rail (Am. Ry. Eng. Assn.—Howard.) J 128 RAILWAY MAINTENANCE each heat furnishing six ingots about 19^ by 20^ ins. at the bottomand about 5 ft. high. One of the most important results of the tests was to throwlight on the question of the amount of work or re
. Railway maintenance engineering, with notes on construction . B. Rail from an Early Pass in Roughing C. Same Rail as Shown in B after FurtherRolls. Rolled from Bloom shown in .4. A. Cross-section of 8X8-in. Bloom. D. Finished Rail from Same Ingot as Bloom and Pieces from Roughing Rolls. Fig. 74.—Sections from Bloom to Finished Rail (Am. Ry. Eng. Assn.—Howard.) J 128 RAILWAY MAINTENANCE each heat furnishing six ingots about 19^ by 20^ ins. at the bottomand about 5 ft. high. One of the most important results of the tests was to throwlight on the question of the amount of work or reduction necessaryin rolling to develop the full physical qualities of the steel. * draws the following conclusion from the tensile testsmade of specimens taken at various stages from the ingot to thefinished rail: The results indicate that the metal in the walls of the ingot takescomparatively little work or reduction to impart to it what may becalled its full physical properties of tensile strength and ductiUty. Theseare reached in the bloom, except at the top end. The axial metal at thebottom of the ingot also soon reaches its full physical properties, but inthe upper
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
