プロパン酸素炎による鋼材の溶接について(第 1 報) : 火炎中の酸素および溶接棒中の脱酸剤の効果

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Although propane has great advantages as fuel gas, it has been considered to be unsuitable for gas welding, for the combustion rate of propane-oxygen flame is low, and then its temperature is not enough high, and it is not concentrated. In this study, two main subjects were investigated. One is of the effect of increasing of oxygen content in the propane-oxygen flame on the intensity of the flame to melt steel plate. The intensity of the flame was experimentally evaluated to record the time to start melting a constant dimmensional specimen. Flame was set on the center of the steel plate, 48mm in square and 3.2mm in thickness, and the time interval from the start of heating untill the first indication of fusion was recorded. The time interval is called as time to start melting. The other subject is a research of the possibility of welding of steel with this enriched oxygen-propane flame by using the welding rod containing much deoxidizing elements, i.e. silicon and manganese. As the results, it proved that welding of steel with the propane-oxygen flame is possible, if much oxygen is enriched in the flame and a welding rod containing much deoxidizing elements is used. It was shown, moreover, that the welded joint with propane-oxygen flame has the same mechanical properties as those with oxyacetylene flame, that deposition rate with propane-oxygen flame increases with an increment of volumetric flow rate of oxygen in the flame, that deposition metal became sound by proper enrichment of oxygen in the propane-oxygen flame.
社団法人溶接学会の論文
1966-07-25

プロパン酸素炎による鋼材の溶接について(第 1 報) : 火炎中の酸素および溶接棒中の脱酸剤の効果

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