Method for cold rolling and cleaning steel plates
AssigneeNihon Parkerizing Co., Ltd.
InventorsShoji Shimada, Sakae Sonoda, Kimio Yokoyama
Life of this patent
Estimating the term…
Abstract
A cleaning method for steel plates is disclosed for removing rolling oil and metal powders by spraying highly pressurized cleaning solution on both surfaces of strip steel plates immediately before and/or after the final step in the cold-rolling process of the strip steel plates. The cleaning may be performed with efficiency by mixing abrasive grains, a rust inhibitor, a surface active agent or the like in the cleaning solution.
Claims7
In a method of cold rolling and cleaning metal strip characterized in that a pressurized cleaning solution is sprayed on both opposite planar surfaces of a metal strip immediately before and after at least a final rolling step, wherein the improvement comprises maintaining the relationship between the temperature and the pressure of said cleaning solution in accordance with the inequality;
- (T).sup.3 .times.P>3.5.times.10.sup.5,
- wherein T is the temperature of said cleaning solution in .degree.C., and P is the pressure of said cleaning solution in kg/cm.sup.2.
Dependencies are inferred from the claim text.