切断酸素気流に関する二, 三の考察および実験(第 2 報) : 予熱炎を伴う場合

概要

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Regarding to the momentum of cutting oxygen stream, in the report 1,author described some results of considerations to the phenomena of oxygen stream in the case of without preheating flame. In this paper, cutting oxygen has been considered in the case of with preheating flame. To study the effect of preheating flame on the momentum of cutting oxygen stream, total head of oxygen stream is measured at various conditions of cutting oxygen pressure and preheating flame, and it has been confirmed that preheating flame is very useful to keep the momentum of cutting oxygen stream. The momentum of cutting oxygen stream is kept most effectively under the conditions as follows. (1) At about 4kg/(cm)^2 of cutting oxygen pressure. (2) Preheating flame applied is neutral mixture. (3) At suitable preheating gas flow rate. (4) Increasing of numbers of preheating orifice. And the best keeping effect is obtained by annular preheating flame. Relation between momentum of oxygen and cut plate thickness will be described in another paper.
社団法人溶接学会の論文
1968-06-25