Study on the mould flux composition and properties during Q235B liquid steel continuous casting
In light of the phenomenon of sticking breakout in the production of Q235B by slab continuous casting the use of mould flux in continuous casting was investigated. Then the chemical compositions were analyzed and the physical properties were measured for the original mould flux, slag rim and sticking breakout slag samples taken from LY Steel. The results show that the greatest change of quality fraction of Al2O3 in the flux just before and after casting is 2.7 % ; The melting temperature, melting rate and viscosity are 15 ℃ ,6 s and 0. 04 Pa.s respectively after casting. There is no great change in the physical properties of the flux before and after casting.