| 摘要 |
PROBLEM TO BE SOLVED: To improve the surface quality of a steel sheet and the productivity by applying nonaqueous liquid containing one or more kinds of alkaline metals and alkaline earth metals to a stainless steel sheet, sticking these metals on the surface of the steel sheet and executing annealing. SOLUTION: In the case of executing the annealing in the sticking state of rolling oil at the material between a rolling mill 1 and a coiling machine 2B or at the upstream side of the annealing equipment 7, or in the case of executing the annealing after degreasing at the downstream side of a cleaning and degreasing device 9, the liquid containing the alkaline metals or the alkaline earth metals is applied on the steel sheet by arranging a coating nozzle 5 to each case. Desirably, the alkaline metals are Na and K and the alkaline earth metals are Ca. It is desirable that the concn. of these metals is 30-1000 ppm. The kind of steel in the stainless steel sheet is not specially limited, but austenite base is suitable among these, and the improving effect of the descaling property is obtd.
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