Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
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Volume 19, Issue 4
Displaying 1-7 of 7 articles from this issue
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  • FURTHER INVESTIGATION ON THE INFLUENCE OF CARBON AND MANGANESE UPON THE MECHANICAL TESTING OF STEELS
    Masatoshi Jo Kogakushi
    1933 Volume 19 Issue 4 Pages 263-271
    Published: April 25, 1933
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2355/tetsutohagane1915.19.4_263
    JOURNAL FREE ACCESS
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    The auther deals, in this paper, with the effects of Carbon and manganese on the yielding point and the impact resilience of our basic open-hearth steel as rolled. The results of the present investigation may be summarized as follows.
    The effect of manganese on the yielding point of steel increases with the increase of the carbon content, but it is slight, compgring with that on the tensile strength.
    The impact resilience of steel under the same amount of carbon decreases with the increase of the manganese content.
    So far as the relations between chemical compositions and physical properties of steel are concerned, under the same tensile strength, the low carbon and high manganese steel raises the yielding point, the elongation and the impact resnience of steel.
    The relation between chemical composition and yielding point of our basic open-hearth steel as rolled may be expressed by the fallowing empirical formura.
    Y=0.15C+0.0009C Mn+0.11Mn+19.5
    Where;
    Y=Yielding point in kg/mm2
    C=Carbon content in %×100
    Mn=Manganese content in %×100
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  • SELECTION OF CRANKSHAFT STEELS FOR AERO-ENGINES AND THEIR REQUIRED CONDITIONS
    K Takase
    1933 Volume 19 Issue 4 Pages 272-280
    Published: April 25, 1933
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2355/tetsutohagane1915.19.4_272
    JOURNAL FREE ACCESS
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    The writer has related in this paper to the characteristics of crankshaft steels for aero-engines used in the past and present, and fundamental essential ideas in designing a crankshaft with a view to select the most suitable steel for it.
    The fact has also been pointed out that the results obtained from ordinary tensile tests and fatigue tests are not alwrays applicable to the practical strength calculation in design, but it is a most important fact to consider upon the stress-concentration and consequent intercrystalline changes of properties.
    Simple relation between static strength and fatigue strength being found out by introducing a new idea of "Cohesion Strength" (die Trennfestigkeit), the writer has established a formula which satisfies the actual cases. The result has been applied for aero-engine crankshaft as an example in purpose of studying it more concretely.
    Necessary conditions and advices in selecting crankshaft steels for aero-engines have also been referred to as a conclusion.
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  • [title in Japanese]
    [in Japanese]
    1933 Volume 19 Issue 4 Pages 280-295
    Published: April 25, 1933
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2355/tetsutohagane1915.19.4_280
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  • [title in Japanese]
    [in Japanese]
    1933 Volume 19 Issue 4 Pages 295-305
    Published: April 25, 1933
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2355/tetsutohagane1915.19.4_295
    JOURNAL FREE ACCESS
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    Die Grundlage für die Spheroidalzementitbildung ist bereits vollständig untergesucht worden, aber die Eigenschaften des Spheroidalzementitstahles., vor allem seine Schlagfestigkeit, sind bis jetzt noch nicht genügend geforscht. In diesern Experimente, daher war es der Zweck, die Gefüge von Stählen mit verschiedenem Kohlenstoff-Gehalt zu verspheroidieren, und dann ihre Schlagfestigkeit zu bestimmen, um schliesslich den Wert mit der die anderen Gefüge habenden Stähle zu vergleichen.
    Die Ergebnisse dieser Versuche sind in folgenden kurz zusammengefasst.
    1) Von Stählen mit verschiedenen Gefüge hat der sein Zementit verspheroidierten Stahl den grötzten Schlagfestigkeitswert, der aber als der von Sorbitstahl kleiner ist.
    2) Der Grad des Zunahmes des Schlagfestigkeitswertes und des Abnahmes der Härte, die durch die Verspheroidierung des Zementites verursacht werden, zeigt jeder maximalen wert an dem etwa 0.8% Kohlenstoff enthaltenden Stahle (Eutektoidstahl)
    3) Die Beziehung zwischen dem Schlagfestgkeit X und der Härte Y ist folgendes
    XY=K
    4) Vergleichend den nicht gearbeiteten Gutzblock mit dem Geschmiedeten, Kann man zeigen, datz der vorigere durch die Verspheroidierung in grotzer Matze beeinflusst wird.
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  • [title in Japanese]
    1933 Volume 19 Issue 4 Pages 306-310
    Published: April 25, 1933
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2355/tetsutohagane1915.19.4_306
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  • [title in Japanese]
    1933 Volume 19 Issue 4 Pages 311-324
    Published: April 25, 1933
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2355/tetsutohagane1915.19.4_311
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  • [title in Japanese]
    1933 Volume 19 Issue 4 Pages 330-341
    Published: April 25, 1933
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2355/tetsutohagane1915.19.4_330
    JOURNAL FREE ACCESS
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