Research on the influence of temperature on the performance of lubricant
At present,the usage temperature of cold rolling leveling fluid is higher than room temperature,generally around 45 ℃ to 50 ℃.In response to the national dual carbon strategy and to save energy consumption,it is neces-sary to study the impact of leveling liquid near room temperature on the performance of steel products and rolling process.The color difference method,dynamic friction coefficient measurement method,dynamic surface tension method,and neutral salt spray test method were used to analyze the four key properties of the leveling fluid for cold rolling continuous annealing units under different temperature conditions,including color difference spots,lubrica-tion,wettability,and corrosion resistance.The results showed that under temperature conditions of 35 ℃,40 ℃,and 45 ℃,there was no change in the color difference,lubrication,and corrosion resistance of the leveling solution.The wettability decreased with the decrease of temperature.When the temperature decreased by 10 ℃,the wettabil-ity decreased by about 4.8％.Based on the above results,on-site implementation was carried out,and the tempera-ture of the leveling liquid was reduced from 45 ℃ to 35 ℃.There was no difference in the rolling force,elongation,and corrosion resistance of the product.The process change has achieved good green and energy-saving effects.
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