| 摘要 |
PURPOSE:To completely remove the grinding soln. of a water-soluble lubricant by applying alkaline processing soln. dipping treatment, alkali degreasing treatment, and neutralization treatment to the surface of a substrate textured with the water-soluble lubricant as the grinding soln. CONSTITUTION:The surface of the substrate 1 deposited with the grinding soln. of a water-soluble lubricant is firstly washed with a pure water shower to wash away the abrasive grains remaining and deposited on the surface during texturing. The washed substrate 1 is dipped in an NaOH vessel (200g NaOH in 1l pure water), and treated with the alkali. The alkali-treated substrate 1 is then washed with a pure water shower to wash away the NaOH. The washed substrate 1 is subsequently dipped in an alkaline degreasing agent, and degreased. The alkaline degreasing agent is then washed away by a pure water shower, the substrate is dipped in a sulfuric acid vessel as neutralization treatment, and the sulfuric acid soln. is washed away by a pure water shower. The substrate is finally dried by using a spin dryer, and the grinding soln. is completely removed from the surface of the substrate.
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