Various methods such as mechanical cleaning, chemical cleaning, water washing, high-pressure cleaning, and dry ice cleaning can be used to clean oil stains on printed circuit boards.
"Mechanical cleaning": physical cleaning with brush, spray or ultrasonic cleaning equipment to remove dirt through mechanical friction or cleaning.
Chemical cleaning: Use chemical solvents such as alcohol and ether. D. Dissolve the dirt and then clean it.
Rinse with water: Rinse with clean water or distilled water, suitable for removing solder residue after welding.
High pressure cleaning ": Use a high-pressure water gun or gas jet device to quickly and thoroughly remove dirt.
Dry ice cleaning ": using solid carbon dioxide (dry ice) to remove dirt through physical changes, without the need for water and chemicals, and is environmentally friendly without polluting the environment.
