| 摘要 |
PURPOSE: To improve transfer efficiency by spraying temper rolling oil in the misty state having a specified particle size on the surface of a steel sheet and rolling the steel sheet as removing the temper rolling oil stuck to the surface of a work roll after rolling. CONSTITUTION: After annealing a cold rolled steel sheet, temper rolling is executed. The temper rolling oil in the misty state mading into the liquid drops of <=30μm in the average particle size are sprayed on the surface of the steel sheet on the inlet side of temper rolling with nozzles 4. After rolling the steel sheet, rolling is executing as removing the temper rolling oil stuck to the surfaces of the work rolls with suction rolls 6 or scrapers 7. By spraying the temper rolling oil made into fine misty state, the quantity of the lubricating oil is changeable from the quantity comparable to dry rolling to that of wet rolling. By sucking and removing excess oil, the change of the condition of lubrication is completed in a short time.
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