| 摘要 |
PURPOSE:To provide an improvement in bead shape, etc. by consisting a flux of SiO2, Al2O3, TiO2, etc. at specific weight % and selecting adequately the ratio in the total content of CaO+Al2O3+MgO and SiO2+TiO2+MnO and a grain size distribution. CONSTITUTION:A flux is composed of 25-35wt% both SiO2 and CaO, 15-30% CaF2, 1-10% both TiO2 and Al2O3, 1-5% MnO, 5-20% MgO+BaO. The ratio between the total content of CaO+Al2O3+MgO and the total content of SiO2+ TiO2+MnO is made 0.8-1.6. The grain size distribution of the ground granular body after melting is made within <0.5%>=420mum grain size and in the range of 5-15%<=74mum grain size. The deterioration in bead shape is prevented and the deterioration in the shock resistance of a molten metal is prevented by such flux. Stable welding is thus accomplished. |
