KAF67-5.5KW-15.75-M5 Anti-rust treatment plan after cleaning the heat dissipation area of gear reducer
The heat dissipation structure of the KAF67 series gear reducer (mostly heat sinks/heat dissipation ribs + outer surface of the shell) is the core of the heat dissipation of the equipment. Residual moisture and cleaning agent residues after cleaning can easily cause metal corrosion, thereby affecting the heat dissipation efficiency and shell structural strength. The following is a professional anti-rust treatment process for this type of reducer, taking into account practicality and long-term protection:
1. Basic drying process after cleaning (core pre-step)
Moisture must be completely removed after cleaning the heat dissipation area to avoid residual moisture causing electrochemical corrosion:
Prioritize drying with compressed air: use 0.4-0.6MPa dry compressed air to blow from top to bottom and from the inside out along the heat sink gap (the distance between the heat sink fins of this model is about 8-12mm). Focus on cleaning the dead corners such as the roots of the heat sink and the joints between the shell and the heat dissipation ribs to ensure that there is no water residue; if a water-based cleaning agent is used during cleaning, additional cleaning agent foam residue in the heat sink gap needs to be purged.
Assisted drying and enhanced drying: If conditions are available on site, place the reducer in a drying room at 60-80°C for 30-60 minutes, or use a hot air gun (set to medium temperature, 15-20cm away from the heat dissipation surface) to blow evenly for 20-30 minutes until there is no trace of moisture on the surface of the heat sink using test paper.
Natural drying alternative: If compressed air or drying equipment cannot be used, the reducer needs to be placed in a ventilated, dry, dust-free, and corrosive gas-free environment. The drying time should be no less than 4 hours. During this period, avoid direct sunlight (to prevent aging of the shell paint surface) and rain contact.
2. Surface degreasing and activation treatment (improving the adhesion of the anti-rust layer)
After drying, the remaining oil stains and cleaning agent components on the surface need to be removed to ensure that the anti-rust material is closely combined with the metal surface:
Degreasing treatment: Use industrial-grade absolute ethanol or a neutral degreasing agent, dip a clean rag and gently wipe the surface of the heat sink and the connection of the casing, focusing on cleaning up any oil stains that may remain during the cleaning process (such as traces of gear oil leakage). After wiping, wipe dry with a clean dry cloth to avoid residues of degreasing agent.
Slight rust activation (if any): If there is slight floating rust before cleaning, you can use a metal surface activator (such as phosphoric acid-based activation solution) with a rag to gently wipe the rusted area. After removing the floating rust, rinse it with clean water immediately, and then dry it thoroughly according to step 1 to prevent the activator from corroding the metal surface.
