How to Deal with White Oxidation Spots on Engine Block?
1 Answers
Clean with an alkaline solution to remove the oxide film that has absorbed dirt. After removal, rinse several times in distilled water. Soak in dilute acid or alkali, and immediately remove and rinse with water when gas is generated. Sandpaper can also be used for polishing. Perform necessary cleaning on the surface of the product to expose a pure metal substrate, facilitating smooth oxidation coloring and obtaining an artificial film with good properties such as wear resistance. Use a low-concentration alkaline solution, around 35%, and ensure proper protection before cleaning.