錨鎖用鋼材の研究

概要

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For producing anchor chains the use of wrought iron has been exclusively adopted and no other material has been introduced in this field. However, the existing situation, so far as the material supply is concerned, has made the wrought iron gradually scarce and this proved worse in the case of Hingley Bars, which had been considered the most suitable for this purpose and recently become quite unobtainaole. Under the circumstances the necessity for looking into another suitable substitute material is keenly felt and has became a matter of great importance. Furthermore, in manufacturing anchor chains many processes have been taken into practice, among which the "welding" by hand hammering is most widely addopted at present. Therefore the material for this purpose should accord with the aforementioned process. The author manufactured three kinds of steel, assimilated-wrought-iron, non-killed steel, and killed steel, by basic open-hearth furnace and rolled them down to 75∿25mmφ round bars. After the careful testing, we was led to a conclusion that the following low-carbon killed steel is the most suitable for the purpose ; C 0.08∿0.12%, Si 0.10∿0.20%, Mn 0.35∿0.45%, P 0.05% maximum, and S 0.05% maximum.
社団法人日本鉄鋼協会の論文
1942-10-25