材料期刊网

Physical Properties and Regulating Mechanism of FluorideFree and Harmless B2O3Containing Mould Flux

LI Guirong , WANG Hongming , DAI Qixun , ZHAO Yutao , LI Jingsheng

钢铁研究学报(英文版)

The flux agents in common mould fluxes were fluoride and sodium oxide, which would do great harm to environments. B2O3 was selected as flux. The physical properties of B2O3containing mould fluxes were studied. The corresponding physical properties of 3791%CaO4309%SiO25%Al2O35%MgO2%Li2O7%B2O3 mould fluxes were as follows: the melting point was 909 ℃, the flowing temperature was 1 160 ℃, the viscosity and surface tension at 1 300 ℃ were 04 Pa·s and 032 N/m respectively, which could meet the demands for certain kinds of steels for mould fluxes in continuous casting.

关键词: B2O3containing mould flux;fluoridefree flux;harmless flux;physical property