The anti rust methods for low net clearance manual hoists (low net empty hand hoists) need to be combined with their structural characteristics and usage environment, and targeted measures should be taken from the dimensions of daily maintenance, storage management, and technical processing. The following are specific rust prevention strategies:

1、 Rust prevention measures for daily use

Timely clean up water and oil stains

After each use, it is necessary to thoroughly remove any residual moisture and oil from the surface of the gourd, as well as from dead corners such as chain links and covers, to prevent electrolyte residue from accelerating oxidation.

After working in a humid environment, it is necessary to dry the surface with a dry cloth and air dry it to ensure complete dryness before storage.

Apply rust proof grease

Apply specialized rust proof grease evenly on the cleaned surface of the gourd, with a focus on covering easily corroded parts such as chains, gears, and hooks.

For frequently rotating components such as gears and bearings, additional lubricating oil needs to be applied to reduce friction losses and form an oil film to isolate air.

2、 Storage environment management

Control temperature and humidity conditions

The storage environment should be kept dry and ventilated, avoiding humidity exceeding 60% or drastic temperature fluctuations, and preventing the formation of condensation water.

Avoid outdoor storage or direct contact with the ground. It is recommended to store in wooden boxes or shelves off the ground and cover them with rainproof cloth.

Isolate corrosive substances

It is strictly prohibited to mix with chemicals such as acid, alkali, salt, etc. to prevent electrochemical corrosion.

The storage area should be kept away from volatile corrosion sources such as fertilizers and industrial solvents, and maintain air cleanliness.

3、 Technical processing and maintenance

Regular professional maintenance

Every quarter, professional personnel disassemble and inspect internal components such as gears, bearings, and chains, with a focus on detecting rust, wear, and deformation.

When cleaning machine parts, use neutral solvents such as kerosene and avoid using strong acidic and alkaline cleaning agents. After cleaning, thoroughly dry and apply rust proof oil.

Application of anti rust coating

Key components such as chains and hooks are treated with surface treatments such as galvanizing and blackening to form a dense oxide film that isolates oxygen.

For precision components, anti rust paint or rust inhibitor can be sprayed, and attention should be paid to selecting a coating type compatible with the gourd material.

Exploration of Cathodic Protection

In high humidity or coastal environments, the applicability of sacrificial anode methods (such as magnesium alloy anodes) can be studied to delay metal corrosion through electrochemical principles.

This method requires professional personnel to design and install it to avoid accelerated corrosion caused by abnormal current.

4、 Operating standards and emergency response

Rainy weather protection mechanism

When working on rainy days, it is necessary to build a temporary rain shelter or cover it with waterproof cloth to prevent rainwater from directly contacting the gourd body.

If rainwater invades, it should be immediately stopped and disassembled for cleaning, with a focus on drying chain gaps, gear teeth, and other parts.

Rust removal and regeneration process

When rust is found, first use sandpaper or wire brush to remove the surface rust layer, and then spray rust remover for chemical conversion treatment.

After rust removal, it is necessary to immediately apply anti rust grease and repaint to restore the anti-corrosion performance.

5、 Long term rust prevention strategy

Material upgrade

Prioritize the use of 304/316 stainless steel components, or perform surface hardening treatments such as nitriding and carburizing on carbon steel components.

New anti rust materials, such as gas-phase anti rust paper and anti rust desiccants, can be used as auxiliary protective measures.

Intelligent monitoring system

Embedding temperature and humidity sensors in key components to monitor environmental parameters in real-time and warn of corrosion risks.

Combining IoT technology to achieve maintenance reminder function and improve the timeliness of rust prevention management.

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