1 Central Iron and Steel Research Institute, Beijing 100081, China 2 Advanced Technology and Materials Co., Ltd., China Iron and Steel Research Institute Group, Beijing 100081, China
Evolution and control of nonmetallic inclusions in FeSiB alloy
1 Central Iron and Steel Research Institute, Beijing 100081, China 2 Advanced Technology and Materials Co., Ltd., China Iron and Steel Research Institute Group, Beijing 100081, China
摘要 Inclusions have a great infuence on the quality of FeSiB amorphous ribbon. The evolution behavior of inclusions was analyzed. The results show that the spherical and elliptical inclusions, consisting of Al2O3 and SiO2, mainly come from industrial pure iron. Ellipsoidal inclusions of 20–30 μm in pure iron were removed by foatation during the smelting process, and spherical inclusions of 1–3 μm combined with deoxidized products in FeSiB melt form Al2O3·SiO2 and CaO·Al2O3·SiO2 inclusions. Some inclusions accumulated on the inner wall of the nozzle during the spraying process, and others fowed out of the nozzle and remained in FeSiB amorphous ribbon. By controlling the total oxygen content in industrial pure iron to 31 × 10?6, clogging on the inner wall of the nozzle can be reduced and the free surface smoothness of the amorphous ribbon can be improved.
Abstract:Inclusions have a great infuence on the quality of FeSiB amorphous ribbon. The evolution behavior of inclusions was analyzed. The results show that the spherical and elliptical inclusions, consisting of Al2O3 and SiO2, mainly come from industrial pure iron. Ellipsoidal inclusions of 20–30 μm in pure iron were removed by foatation during the smelting process, and spherical inclusions of 1–3 μm combined with deoxidized products in FeSiB melt form Al2O3·SiO2 and CaO·Al2O3·SiO2 inclusions. Some inclusions accumulated on the inner wall of the nozzle during the spraying process, and others fowed out of the nozzle and remained in FeSiB amorphous ribbon. By controlling the total oxygen content in industrial pure iron to 31 × 10?6, clogging on the inner wall of the nozzle can be reduced and the free surface smoothness of the amorphous ribbon can be improved.
Bai?song Li,Wen?zhi Chen,Yu?lin Zhao, et al. Evolution and control of nonmetallic inclusions in FeSiB alloy[J]. Journal of Iron and Steel Research International, 2020, 27(5): 588-597.