Effect of Slag Basicity on Non-Metallic Inclusions and Cleanliness of 15-5PH Stainless Steel

Few reports exist on the effect of basicity refining slag inclusions in 15-5PH stainless steel and its removal efficiency. In this study, effects various basicities formation efficiency molten were investigated. To investigate chemical makeup non-metallic liquid steel, laboratory experiments thermodynamic calculations conducted CaO-MgO-SiO2-Al2O3-CaF2 with steel. samples that had reacted high-basicity samples, magnesium content aluminum yield higher. Thermodynamic findings according to ion molecule coexistence theory showed log (aSiO23/aAl2O32) decreases as increases. This increases Al concentration while decreasing Si content. Log (aMgO3/aAl2O3) also increases, increasing Mg With this, transformation order oxide is Al2O3 → MgAl2O4 MgO. High-basicity attachment generates are more easily adsorbed by thereby improving cleanliness