COLD ROLLING OIL FOR TIN PLATE

摘要

PURPOSE:To obtain a rolling oil suitable for a high-speed rolling of a steel plate for tin plate by using an oil which contains a specified amount of an ester of a specified higher fatty acid with a hindered polyol and has 5 specified pour point and viscosity. CONSTITUTION:This oil contains at least 80wt.% ester of a hindered polyol with a higher fatty acid containing 15-70wt.% 12-22C saturated fatty acid and has a pour point of 20 deg.C or lower and a viscosity at 40 deg.C of 100cSt or lower. An antioxidant may be added to this oil. Examples of suitable antioxidants to be used include an amine-base antioxidant and a phenolic antioxidant. The amount of the antioxidant to be added is 0.2-2wt.% based on the total weight of the oil. The antioxidant serves to prevent the oxidation of the surface of a steel plate after rolling, facilitates degreasing, and can improve the resistance to staining with oil.