Transactions . so that they no longer correspond to the original template of therail. These rails if judged by the phosphorus units are not essen-. Fig. 3. tially different, yet they are essentially dissimilar in regard to theirresistance to abrasion. It is time that the chemist surrendered hiscomplete and entire control of this question of rails, and railwaycorporations should turn their attention to physical and mechanicaltests. It has been my habit to advise making these examinationsby taking the test-pieces for torsional and tensile strain out of allparts of the rail, and not out of one, a
Transactions . so that they no longer correspond to the original template of therail. These rails if judged by the phosphorus units are not essen-. Fig. 3. tially different, yet they are essentially dissimilar in regard to theirresistance to abrasion. It is time that the chemist surrendered hiscomplete and entire control of this question of rails, and railwaycorporations should turn their attention to physical and mechanicaltests. It has been my habit to advise making these examinationsby taking the test-pieces for torsional and tensile strain out of allparts of the rail, and not out of one, and to carefully examine thestructure of the test-pieces, as well as part of the rail not mechani-cally tested. The experiments which I have made prove conclusively that thetemperatures at which rolling commences and at which the rail leavesthe rolls and is laid upon the straightening bed and allowed to cool, PAPERS ON STEEL RAILS. 375 have a very decided influence on its life. I have been able to showtliat at times the condition of the steel in the centre was not at allthe condition of that on the outside. I have also been able to showthat t
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
