Treatment manner null of direct cooling water system of hot rolling

摘要

PURPOSE: To prevent the corrosion of peripheral apparatus in the spraying section of a rolling mill and fault such as clogging of nozzles in a direct cooling water system of a circulation type hot rolling stage of iron works. ;CONSTITUTION: A chlorine agent and scale preventive agent are added to the direct cooling water for the hot rolling stage at such a ratio at which the chlorine agent attains a concn. of 0.1 to 2.0mg/L (where in terms of effective chlorine) and the scale preventive agent attains a concn. of 0.5 to 10mg/L. The treatment of the direct cooling water system of the hot rolling stage is executed by spraying the cooling water in the hot rolling stage.;COPYRIGHT: (C)1996,JPO