交流電弧鎔接器に使用せられる高周波電流の効果に就いて普通に考へられてゐる解釋を批判し、高周波振動電流の繼續時間の比較的短いことをオツシログラムを以て示し、併せて火花放電發生用の遞昇變壓器の電壓の位相を調整すべきことに言及す。

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This paper represents a partial report on studies on the electrode for metallic arc welding of D-quality steel carried on at Fujinagata Dockyard Co., Ltd. under the author. The investigation has been undertaken with the object of acquiring data concerning this subject, and it is solely because sufficient data had not been found in published techinical literature that it was decided to make above subject known at once.
The first, the coatings whose constituents were so chosen as to bring out the specific effects on the slag constituents of addition of ferro-manganese in varying proportion are' placed in a vertical mild steel dipping tube of about 1.5 inches diameter and 20 inches high and the ordinary electrode rods immersed and slowly withdrawn. After the coat the rods are thoroughly air dried and then heated at a temperature of 105°C. for 4 hours in the drying chamber.
The weight of the coating of a rod should then be constant by weighing with the rough balance.
The welded-metals and butt-welded-test plates were made by depositing the coated electrodes. From these all-welded-metal and welded-test plate specimens and samples for chemical analyses were made and tested, respectively. The data were tabulated in the order of increasing ferro-manganese (-manganese-) for comparison and interpretation of results. The effects of ferro-manganese are shown by grouping the specimens according to slag constituents and plotting curves for each group, with values from test for ordinates and ferro-manganese (-manganese-) contents for abscissa.

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本論文は、普通軟鋼線を蕊線とする坩堝式被覆電極棒の被覆劑中に混入するマンガン(滿俺鐵)が、其等の鎔接金屬及び鎔接々手の機械的性質、並びに鎔接金屬の化學的組成に及ぼす影響に就ての研究を記載したものである。即ち先づ一定の被覆劑(粉末鑛滓成分)中に混入する滿俺鐡量を、種々の割合に變化して、多種の被覆劑を作り、之等の一定量を普通軟鋼線に塗布して,塗布満俺量の異なる種々被覆電極棒を作製しだ。次に之等の被覆電極棒で夫々の鎔接金屬及び鎔接々手を作つて、共等の機械的性質及び化學的組成の變化を調べて、其の被覆劑中に混入するマンガン(滿俺鐵)量と、鎔接金屬及び鎔接々手の機械的性質並びに鎔接金屬の化學的組成との相互關係を究めた。

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