The electroslag remelting (ESR) process of steel mainly occurs in formation period of electrode-end melting drop

and the molten steel is pured and cleaned by slag washing effect as the inclusions in steel are absorbed and solved by slag

while the interfacial tension of slag-steel-inclusion closely affects this process. Based on the research achievements about interfacial properties of fluoride-containing slag system in ESR metallurgy process at home and abroad

the rule of influence of slag ingredient including CaF

2

CaO

Al

2

O

3

MgO

Na

2

O and SiO

2

and temperature on molten slag-steel interfacial tension and its internal mechanism are analyzed

while variation rule of the slag-steel interfacial tension with slag ingredient and steel chemical composition

liquid temperature and slag basicity are summarized. To estab

lish experience formula and calculation model of fluoride-containing slag system interfacial property parameters for ESR process is research direction o£ this field.