Publish Time: 2026-06-16 Origin: Site
Industry Background
The railway industry covers high-speed trains, subways, locomotives and track facilities, involving a large number of components made of carbon steel, stainless steel, aluminum alloy, copper alloy and other materials. Vehicle parts face multiple challenges including marine salt spray, multi-metal contact corrosion and long-term static rusting during cross-border procurement, export of complete vehicles and long-term spare parts warehousing.
Industry Challenges
1.Rusting of complete vehicles and parts during export shipping
Most railway vehicles and parts are exported by sea. Components such as chassis parts and bogie frames develop surface rust in salt spray environments inside containers or on open decks, causing poor appearance upon arrival.
2.Galvanic corrosion of multiple metals
Aluminum alloy for vehicle bodies, stainless steel for interior and fasteners, and carbon steel for chassis structures are widely used in railway vehicles. Direct contact of dissimilar metals in humid environments triggers galvanic corrosion and accelerates rusting.
3.Rust damage of spare parts during long-term warehousing
Railway operators stock massive spare parts to ensure safe operation. Some spare parts may be sealed for years, and the protection effect of traditional oil-based anti-rust measures gradually fails during long-term storage.
4.Crevice corrosion of threaded connectors
Moisture and corrosive media easily remain in thread gaps of bolts and nuts. Traditional oil coating cannot penetrate deep into gaps, causing hidden rust.
5.Preferential corrosion in welding heat-affected zones
Material structure changes in welding heat-affected zones of railway vehicle structures, which become weak points prone to priority corrosion in corrosive environments. Traditional protection methods cannot cover these areas effectively.
VCI Solution Value Proposition
We provide multi-metal compatible, full-gap coverage and long-term reliable protection solutions, satisfying the full-chain anti-rust demands of the railway industry from production to operation and maintenance.
Recommended Solutions & Product Features
VCI Anti-Rust Film / Bag: Used for export packaging of parts. Combined with desiccants to realize full-cycle protection during sea transportation, and has supported well-known railway enterprises.
VCI Anti-Rust Paper: Laid between stacked bogies and body structural parts, compatible with multiple metals.
VCI Anti-Rust Powder / Emitter: Vapor molecules cover all metal surfaces including thread gaps and welding areas inside sealed packages, solving protection problems of blind areas.
VCI Foam Cushion: Dual functions of shock absorption and anti-rust, suitable for precision electronic parts and sensor assemblies.
Expected Benefits
Ocean shipping rust rate of exported complete vehicles and parts reduced by over 90%
Galvanic corrosion risks of multi-metal mixed components effectively blocked
Long-term stored spare parts can be installed directly without reprocessing
Corrosion of welding heat-affected zones significantly improved