溶接アークの最大長さにおよぼす風向風速の影響-2-

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Continuing the previous report(N0.1)，we want to report here the results of some experiments on the variation of the maximum arc length under various blowing directions and the influence of the wind to the vaporized coating of electrodes. 　　An outline of the results will be described below. 　　(1)The maximum arc length is affected remarkably by the coating of electrode. The　arc　length　of　an　ilumenite　electrode　is　longer　than　that　of　a　low-hydrogen electrode. It is observed that the vaporized coating， i.e.gas molecules， is　more　effective on striking　the arc　than　the　vaporized　core metal and moreover　the former depends strongly on t he winds' conditions. 　　(2)The maximum arc length is affected by the blowing directions.　In the opposite blowing it is going to be the shortest and in the backward blowing， inclined at 45°，it is going to be the longest. 　　(3)The relation of L(θ)/L(π/2) and θ or the variation of the arc angle is independent of the kind of electrode and the blowing direction. 　　(4)The arc voltage at a moment of arc-vanishing depends on the blowing direction but the current is not so much affected. 　　(5)These results suggest that the interaction of the wind and the gas ionic flow of the coating will be a subject for a next study.
北見工業大学の論文
1972-06-00