サブマージアーク溶接における脱酸反応におよぼすスラグ塩基度の影響 : サブマージアーク溶接における脱酸反応に関する研究(第 1 報)(<特集>溶接作業におけるコンピュータの利用について)

概要

論文の詳細を見る
The effect of slag basicity on silicon and manganese deoxidation in the submerged-arc welding process is considered by bead-on-plate welding performed using agglomerated fluxes of CaO-MgO-Al_2O_3-SiO_2 system. Dissolved oxygen content in molten pool is remarkably affected by oxygen which is originated from dissociation of silica in slag, then oxygen content in weld metal can be decreased by a reduction of the activity of silica. The arc cavity is almost filled with CO gas, and P_<CO_2>/P_<CO> in the atmosphere is decreased with increasing slag basicity. Ratio of oxygen content in weld metal to FeO content in slag takes a constant value independently of the slag basicity. Oxygen in weld metal deposited with MnO-free fluxes seems to be quasi-equilibrium relation with silicon at about 1950℃ independently of manganese content in weld metal.
社団法人溶接学会の論文
1977-03-05