Granulated Fused Refining Fluxes
General Introduction:
SATA is a eutectic salt composed of mgcl2 anhydrous and potassium or sodium chloride. Which can removes alkali metal(sodium, calcium, lithium) and non-metallic inclusions (oxides, borides and carbides) from liquid aluminium and al-alloys. It’s in-furnace metal treatment flux.
The main chemical compositions of different fluxes based on Mgcl2 anhydrous, Kcl, Nacl, CaF2, Na3ALF6, K3ALF6 and etc. These raw materials are fused in a furnace to a high temperature, cooled and crushed. Compare to the powder mixed. Fused fluxes have a single sharp melting point rather than mixed powder flux has a melting range. The melting point belows 483℃. And some are free from fluorides, sodium, which is suitable for high magnesium al-alloy. Some fluxes has a very small amount of calcium fluoride added to MgCl2/KCl flux leads to a significant increase in the inclusion and alkali removal performance. The MgCl2 minimizes or eliminates surface oxidation by creating a thin-film layer on the metal surface, thus cover fluxes can be avoided if the refining flux contains enough MgCl2.
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