| 摘要 |
PURPOSE:To obtain the title oil excellent in seizure resistance and capable of both reducing the rolling load and improving the gloss by incorporating a specified amount of a polyalkyl methacrylate having a specified molecular weight into a base oil comprising a specified monoester. CONSTITUTION:0.3-5wt.% polyalkyl methacrylate having a molecular weight of 5,000 to 50,000 [e. g. a polylauryl methacrylate (of an average molecular weight of 20,000)] is incorporated into a base oil comprising a monoester of the formula R-COO-R' (R is an alkyl group of a fatty acid; P' is an alkyl group of an alcohol) wherein the total number of carbon atoms of P and R' is 23 or less and the difference in the number of carbon atoms between R and R' is at least 9 (e. g. methyl laurate), thus giving an oil for cold rolling of a steel plate. This rolling oil is excellent in heat scratch resistance in cold rolling of a stainless steel plate in particular, can reduce the rolling load, and can improve the gloss; therefore, it is effectively utilized for cold rolling of a stainless steel plate excellent in gloss. |
