The anti-corrosion measures for electric winches (electric hoists) need to be comprehensively implemented from five aspects: material selection, surface treatment, environmental control, regular maintenance, and design optimization. The following are specific methods and analysis:

1、 Material selection: Improve corrosion resistance from the source

stainless steel material

Application scenarios: high humidity, salt spray, or chemically corrosive environments (such as coastal and chemical sites).

Principle: A high proportion of chromium in stainless steel forms a dense oxide film, which isolates oxygen and moisture and significantly reduces the corrosion rate.

Case: Using stainless steel in load-bearing components such as hooks and brackets of electric hoists can extend their service life by 3-5 times.

Galvanized/aluminum coated steel wire rope

Application scenario: Lifting operations that frequently come into contact with moisture or corrosive media.

Principle: The galvanized layer forms a zinc hydroxide protective film in a corrosive environment, while the aluminum plated layer forms an aluminum oxide passivation layer, both of which can effectively prevent steel wire rope corrosion.

Data: The breakage rate of galvanized steel wire rope is about 50% of untreated steel wire rope, and the service life is increased by more than twice.

2、 Surface treatment: Building physical protective barriers

coating technology

Rust proof lubricating grease: applied to transmission components such as gearboxes and bearings, forming an oil film to isolate moisture and impurities.

Rust proof coating: The body is coated with epoxy resin, polyurethane and other coatings, which have excellent resistance to salt spray and chemical corrosion.

Electroplating/chemical plating: Galvanizing, nickel or chromium on the surface of fasteners and connectors to improve corrosion resistance and wear resistance.

Up Blue Technology

Principle: A magnetic iron oxide (Fe ∝ O ₄) protective layer is formed on the metal surface through a chemical solution to prevent oxygen from coming into contact with iron.

Application: Commonly used for gears, chains, and other components of electric hoists. After treatment, the surface appears blue to black, and the corrosion resistance is significantly improved.

3、 Environmental control: reduce contact with corrosive media

Humidity management

Dry storage: Store the electric winch in a cool, dry environment, away from water and moisture sources.

Ventilation design: Install ventilation holes inside the equipment or storage area to prevent the accumulation of humid air.

Desiccant usage: Place desiccants such as silica gel and calcium chloride in a closed space to absorb moisture from the air.

Cleaning and maintenance

Regular cleaning: Rinse the surface dirt of the equipment with clean water to avoid residual corrosive substances.

Timely drying: After cleaning, use a dry cloth to wipe off moisture to prevent residual water stains from causing rust.

Lubrication and maintenance: Regularly apply lubricating grease to transmission components to reduce friction and corrosion risks.

4、 Regular maintenance: promptly identify and address corrosion issues

Inspection frequency

Daily inspection: Check the appearance of the equipment before operation, and promptly handle any rust or coating damage found.

Regular maintenance: Conduct a comprehensive inspection of the electric winch every quarter or six months, with a focus on checking the gearbox, wire rope, and other easily corroded parts.

Treatment measures

Slight rusting: Use hardwood or bamboo slices to scrape off rust spots, and reapply rust proof grease or coating.

Severe corrosion: Replace damaged components and strengthen protection in adjacent areas (such as increasing coating thickness or replacing corrosion-resistant materials).

5、 Design optimization: Preventing corrosion starts from the structure

sealing design

Waterproof structure: Sealing rings and waterproof joints are used in the motor, control box, and other parts of the electric hoist to prevent moisture from entering.

Drainage design: Install drainage holes at the bottom of the equipment to prevent corrosion caused by water accumulation.

Material matching

Avoid galvanic corrosion: When different metals come into contact, choose materials with similar potentials or use insulating gaskets for isolation to prevent electrochemical corrosion.

Prioritize corrosion-resistant materials: Use stainless steel or galvanized materials in critical areas such as hooks and brackets to enhance overall corrosion resistance.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment