| 摘要 |
PCT No. PCT/EP92/00272 Sec. 371 Date Nov. 18, 1994 Sec. 102(e) Date Nov. 18, 1994 PCT Filed Feb. 7, 1992 PCT Pub. No. WO92/13661 PCT Pub. Date Aug. 20, 1992The invention relates to a casting flux for steels or alloys on an iron, nickel or cobalt basis which make heavy demands on the degree of oxidic purity for continuous or ingot casting and contain as the main components calcium oxide (CaO), aluminium oxide (Al2O3) and strontium oxide (SrO), the characterizing feature of the invention being that the chemical composition lies within the following limits (in % by weight): 20 to 40% CaO, 15 to 30% SrO, 0 to 6% Mgo, 0 to 8% MgF2, 0 to 8% CaF2, 0 to 8% NaF 0 to 6% LiF residue Al2O3, the flux having a total content not exceeding 15% of oxygen-yielding compounds, such as SiO2, FeO, MnO, K2O, Na2O, P2O5, Cr2O3 and B2O3. |
