The effect of CaF2 on the contact angle of refining powder on the NiCrMoV steel at high temperature using Image Analysis and Statistical Package for the Social Sciences software

Steelmaking refining powders always play an important role in reducing steel inclusions. these types of powders can be used in steel production processes for all types of low-alloy and high-alloy steels. the compositions of these powders are generally cao-al2o3-sio2. adding caf2 values gives special properties to this type of refining powders. in this study, four types of refining powders with 3 to 6% of caf2 were melted in induction furnace under high temperature and the surface of nicrmov low-alloy steel was impregnated by the molten refining powders. the contact angle between the sample of the molten refining powders and the surface of nicrmov steel was determined using image analysis (ia) and was analysed using statistical package for the social sciences (spss). the results showed increasing the percentage caf2 about 6 in refining powder of cao-al2o3-sio2 reduces the contact angle of the molten refining powders on the nicrmov steel about 60%.