. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . ows the grain size at the center of the head and view 3 shows thefiner grain near the surface and the distortion of the grains by wheel photograph is taken at the end of a crack, and shows, besides this, some * Blowholes in Steel Ingots. E. von Maltitz. Trans. American Institute of Mining Engi-neers, Vol. XXXVIII (1907), p. 412-447. t Iron and Steel Magazine, August, 1905 (Job); and Journal of the Iron and Steel Institute,p. 301, 1905 (Captain Howorth)
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . ows the grain size at the center of the head and view 3 shows thefiner grain near the surface and the distortion of the grains by wheel photograph is taken at the end of a crack, and shows, besides this, some * Blowholes in Steel Ingots. E. von Maltitz. Trans. American Institute of Mining Engi-neers, Vol. XXXVIII (1907), p. 412-447. t Iron and Steel Magazine, August, 1905 (Job); and Journal of the Iron and Steel Institute,p. 301, 1905 (Captain Howorth). 392 STEEL RAILS small cavities, which were more noticeable before etching, and which might havebeen minute oxide pits or pockets. View 4 shows the metal, which is the white ground mass, to be badly con-taminated by slag, which is extended longitudinally by the process of slag lines were found to some extent over the whole surface of this piece,but were worst in the neighborhood of the point indicated by the dot By, view is shown on the picture, which was taken at the edge of the localized portion. leSSIM. Cross Section at point C2, 168,000 grains per sq. in. - Crushed Head. Fig. 269 illustrates another example of a crushed head due to unsoundmetal. View 1 shows a section of the head taken at the point of greatest dis-tortion. The cavity in the top of this view is a drilled hole. On one side ofthe head a cavity which did not show on the surface, but indicated markedbreaking down of the metal, was revealed. The metal, however, is more uni-form throughout this rail than was the case in the rail of the preceding figure. View 2 shows the grain at the center of the head; view 3, like view 3 ofFig. 268, is taken at the end of the crack. It shows the finer grain and distor-tion of the same, and shows as well the further distortion of the metal at the INFLUENCE OF DETAIL OF MANUFACTURE 393 end of the crack as a sort of tearing action. The end of the crack is at th
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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913
