Evaluation of Rust Protection Performance of Rolling Emulsion

The reasons of producing rust and anti-rust abilities of rolling emulsions were analyzed.Combining with given production conditions,a stack filter paper method for evaluation of rust protection performance was offered.The anti-rust property of two kinds of rolling emulsion and their compounds at different volume ratios was studied.Results showed that the remained emulsion,temperature of coiled stock after rolling,residue on strip steel after annealing,iron soap used in rolling emulsion and inorganic salt were main factors to accelerate metal corrosion;1＃rolling emulsion showed good anti-rust behavior in lab test and could get the same property in industrial practical application.When the mixture ratio was 3∶1,rust protection performance of rolling emulsion was the best.