JOURNAL OF THE JAPAN WELDING SOCIETY
Online ISSN : 1883-7204
Print ISSN : 0021-4787
ISSN-L : 0021-4787
Volume 22, Issue 2
Displaying 1-5 of 5 articles from this issue
  • K. Matsuo
    1953 Volume 22 Issue 2 Pages 42-46
    Published: 1953
    Released on J-STAGE: June 12, 2009
    JOURNAL FREE ACCESS
    The suitable welding current varies not only according to kind of electrodes, but also size of plates and skill of welding operatiors. In this report, the author could confirm that the ranges of suitable currents for welding electrodes made by the Fukuchiyama Welding Electrode Works were considerlably wide.
    In his opinion, using higher welding current in the allowable range is better than using lower current, for it will be con4ucive to the removal of slag inclusion and the improvement of mechanical properties of weld.
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  • K. Nakane
    1953 Volume 22 Issue 2 Pages 46-53
    Published: 1953
    Released on J-STAGE: June 12, 2009
    JOURNAL FREE ACCESS
    Luders' lines -appearing in the weld due to thermal stress when a spot deposit or bead is laid by metallic arc welding on an area of the polished surface of a mild steel plate have been observed by a simplified apparatus for Schlieren's method and the slip plane in the section has been determined by etching with Fry's etchant.
    With reference to strain figures observable in welds carried out on areas with distribution of residual stresses already known or in welds on the surface of a steel strip placed preliminarily under constant load, the author. has attempted to advance a general theory explaining the causes of development of various patterns of strain figures, namely : systems, appearing in the case of a spot deposit, of Type I concentric circles, radial lines, or spirals; systems, arising in beads, of Type II concentric circles radial lines or spirals appearing at starting and finishing ends, and of beardlike lines clustered in series or perpendicular lines acroses the bead, which are formed in straight welds
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  • T. Owa, S. Hinamoto
    1953 Volume 22 Issue 2 Pages 53-56
    Published: 1953
    Released on J-STAGE: June 12, 2009
    JOURNAL FREE ACCESS
    Nowadays it is said that nitrogen in the weld metal will be the most probable causes of the bluebrittleness and temper-brittleness of the weld metal. The authors examined the relations among hardness, lattice. intervals, nitrogen and oxygen contents to determine the behavior of nitrogen and oxygen in the phenomenon of aging. As a result of these preliminary testings was noted that :
    1) Hardnesses and lattice intervals are both approximately proportional to the nitrogen and oxygen contents of the weld metal when it has been made under the constant conditions of welding.
    2) The phenomena of precipitation and remelting of nitrogen can be recognized in the variations of hardnesses and lattice-intervals.
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  • [in Japanese]
    1953 Volume 22 Issue 2 Pages 56-66
    Published: 1953
    Released on J-STAGE: June 12, 2009
    JOURNAL FREE ACCESS
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  • 1953 Volume 22 Issue 2 Pages 69-70
    Published: 1953
    Released on J-STAGE: June 12, 2009
    JOURNAL FREE ACCESS
    Download PDF (112K)
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