Slag basicity index
Webfor expressing the slag/flux basicity, in particular Tuliani’s basicity index, the op-tical basicity index as defined by Datta and Parekh in 1989, and the B z basicity index as defined by Zeke in 1980. Effect of Weld Metal Oxygen Content on Weldment Properties Oxygen is introduced to the weld pool at high temperatures by 1) the pres- WebMar 11, 2024 · The slag composition of this work is located near this precipitation region with CaF 2 contents less than 20 wt pct. A series of slag samples differing in composition was designed to investigate the effect of CaF 2 and …
Slag basicity index
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WebSep 30, 2024 · The effect of basicity, defined as the CaO/ (SiO 2 + Al 2 O 3) mass ratio, on the contents of FeO and P 2 O 5 in M’O saturation and fully liquid slag is shown in Figure 2. All of the slag composition data under M’O saturation … WebFeb 21, 2024 · When keeping the HMD slag composition range from Table 2 in mind, it is clear that lowering the slag’s basicity, so adding more SiO 2 and Al 2 O 3, would lower T liq of the slag. It is remarkable that the composition of BF carryover slag is closer to the ‘sweet spot’ with the lowest T liq than the HMD slag composition after injection.
WebThe foam index shows a minimum value at basicity[5(CaO1MgO)/(SiO 21Al 2O 3)] of 1.4 at 1713K; it increases at higher basicities due to the precipitates such as 2CaOSiO 2or (Fe,Mg)O which stabilizes the foam. The effect of TiO … WebSep 6, 2024 · Basicity, which is the thermodynamic driving force of dephosphorization, decreased with the increasing DRI content because SiO 2 concentration in the slag was proportional to DRI addition. The excess free energy of P 2 O 5 increased with the increasing SiO 2 content in slag.
Webtemperature (1600ºC) and high oxygen partial pressure. This figure shows that slag with higher basicity are dual saturated with less MgO concentration. Table 3 indicates that the … WebJan 8, 2024 · The bulk composition of the selected aluminate basic flux (basicity index (BI) = 1.4) is shown in Table 2 [11,31]. ... The slag analyses in Table 5 shows lowered FeO content in the MP slags, as compared to the BC slag. Therefore, it appears that the oxygen potential prevailing at the molten flux-weld pool interface is lowered by adding Al ...
WebA dense slag that was created over the weld surface will be removed. These electrodes are preferred by less-skilled operators and consequently are used for a wide variety of maintenance operations. ... Classification of Saw Flux Based on Basicity Index: Basicity is one of the most important metallurgical features of slags. It impacts greatly on ...
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