The anti-corrosion of manual forklifts requires comprehensive measures from four aspects: material selection, structural optimization, surface treatment, and maintenance management. The specific methods are as follows:

1、 Material selection: Improve corrosion resistance from the source

stainless steel material

Application scenarios: acidic and alkaline environments such as food, medicine, electroplating, chemical industry, etc.

Case: The heavy-duty bear 3-ton stainless steel manual forklift is made of 304 stainless steel, which has the characteristics of corrosion resistance, oxidation resistance, and strong wear resistance. The fork width can be customized (55-69 cm), and the length can be selected from 1.15-2 meters.

Advantages: 304 stainless steel contains 18% chromium and 8% nickel, forming a dense oxide film that effectively isolates corrosive media such as chloride ions and sulfides.

High strength corrosion-resistant steel

Application scenarios: Damp salt spray environments such as ports and docks.

Case: Forklift S-shaped steel is specially designed for forklifts, which improves corrosion resistance by optimizing alloy composition (such as adding copper and phosphorus) while maintaining high strength (yield strength ≥ 345MPa).

Advantages: Compared to ordinary Q235 steel, the corrosion resistance is improved by 2-3 times, reducing the risk of fork deformation caused by corrosion.

2、 Structural optimization: reduce contact with corrosive media

Closed design

Fork tip: Adopting a closed structure (such as the Junhengli AMX I15 series), it prevents the splashing of operational debris and avoids the attachment of salt and chemical substances in the debris.

Fork roller: Integrated protective device to reduce wear on the contact surface of the pallet and prevent metal shavings from being exposed to humid environments.

Dustproof and moisture-proof structure

Hydraulic cylinder: Use a dust cover to protect the piston rod and prevent dust and water vapor from entering and causing rust.

Body connector: The electrical connector is built-in, and a protective cover is installed on the exposed part to prevent rainwater and chemical liquids from entering.

3、 Surface treatment: Building protective barriers

coating technology

Corrosion resistant paint: Choose paints with strong corrosion resistance such as polyurethane and acrylic polyurethane to replace traditional acrylic and alkyd paints, and extend the coating life by 3-5 times.

Electroplating treatment: Galvanizing or nickel plating is applied to small parts such as bolts and nuts to form a dense oxide layer that blocks corrosive media.

Conversion film technology

Phosphating treatment: forms a phosphate chemical conversion film on the metal surface, enhances coating adhesion, and provides basic anti-corrosion protection.

Dacromet coating: using zinc and aluminum sheets as anti-corrosion media, bonded with organic resin, suitable for high humidity and salt spray environments.

4、 Maintenance management: Extend service life

regular cleaning

Key areas: Fork racks, door rack slides, generators, battery electrode fork columns, and other areas prone to accumulation of dirt, need to be cleaned of dirt and soil daily.

Salinization treatment: After use in a saline environment (such as salt storage), blow the accumulated salt with dry compressed air or rinse with water and dry the surface moisture.

Fastener inspection

Inspection cycle: Check the fastening of fork support, lifting chain tightening screws, wheel screws, etc. every week to prevent loosening and stress concentration, which can accelerate corrosion.

leak detection

Testing parts: various pipe joints, diesel tank, engine oil tank, hydraulic cylinder, etc., to avoid corrosive environment caused by oil leakage.

Solution: If any leakage is found, it should be repaired immediately, the leakage area should be cleaned, and rust proof oil should be applied.

lubricating maintenance

Lubrication parts: For exposed metals such as lifting chains and connecting bearings, add lubricating oil and grease according to the instructions to form an oil film that isolates air and water vapor.

Seasonal replacement: Use high-temperature resistant grease in summer and low-temperature flowable lubricating oil in winter.

5、 Special environmental protection

anodic sacrifice protection

Application scenarios: Marine climate or highly corrosive environments such as the chemical industry.

Principle: Connect metals with lower potentials such as zinc and aluminum to the forklift to prioritize corrosion on the sacrificial anode and protect the main structure.

cathodic protection

Application scenario: Forklift components (such as chassis) that have been immersed in saltwater for a long time.

Principle: By applying an external current, the surface potential of the metal is reduced to suppress corrosion reactions.

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