Rolling oil composition for broad strip mill, and preparation method for rolling oil composition

The invention relates to a rolling oil composition and a preparation method thereof, in particular to a rolling oil composition for a broad strip mill, and a preparation method for the rolling oil composition, and belongs to the field of oil for metallurgy rolling mills. The rolling oil composition comprises the following components in parts by weight: 200 parts of trimethylolpropane cocoate, 20 parts of oleic acid diethanolamide, 40 parts of coconut oleic acid diethanolamide, 455 parts of machine oil, 30 parts of a rust inhibitor, 5 parts of an anti-oxidant, 50 parts of vulcanized lard and 200 parts of polyethyleneglycol 400. The rolling oil composition is applied to a four-roller mill and a six-roller mill, can meet requirements on steel rolling at high temperature to ensure the stability in the steel rolling process, and can ensure annealing detergence, the mill detergency and the anti-rust property under the no-clean condition.