There are generally two types of methods for oil removal on template surfaces: alkaline solution cleaning and organic solvent cleaning:
Alkaline Solution Cleaning: This method utilizes the "saponification reaction." Vegetable oils and animal fats that can undergo saponification react with the alkali, producing water-soluble glycerol and soap. The glycerol dissolves in water and is rinsed off the template surface. The soap further emulsifies the grease, forming an oil-in-water emulsion, thus achieving the oil removal purpose. We have prepared a cleaning agent called (Note: Name is blank in the original text. Translator's note: A specific name should be filled in if known) for this, and washing with warm water yields good results.
Organic Solvent Cleaning: This method uses solvents such as solvent naphtha and xylene to remove oils that are soluble in these solvents. However, these solvents are flammable and can pollute the environment.
Standard for Checking if Oil and Wax are Removed:
The standard is to rinse the template with water; a continuous water film should form on the surface. If this continuous water film does not break for 30 seconds, it indicates the cleaning of the steel template is complete. If grease and wax are not completely removed, the surface tension will differ, causing the water film to be discontinuous and break.
