Electrostatic oiling

Electrostatic oiling application primarily relies on electrostatic principles to uniformly deposit rust-preventive oil onto target surfaces, such as galvanized steel sheets. In this process, the upper and lower knife beams within the oiler act as electrodes, typically set at negative polarity and connected to a high negative voltage, while the galvanized sheet is grounded to serve as the positive electrode. Consequently, a high-voltage electrostatic field is established between the knife beams and the galvanized sheet. The rust-preventive oil inside the knife beams becomes polarized and acquires a negative charge, forming tiny negatively charged oil droplets. Under the influence of the electric field, these oil droplets travel along the electric field lines towards the positively charged galvanized sheet and discharge upon deposition, forming a uniform oil film on its surface.