Functions and Characteristics of Railway Track Bolts
Railway track bolts are key components for securing rails. They bear axle loads, distribute track loads, and transmit forces. A track bolt typically consists of a bolt head, shank, washer, and nut. The quality of bolts and their installation directly impacts railway safety and operational reliability.
Necessity of Corrosion Protection for Track Bolts
In service, track bolts are frequently exposed to water (rain, snow, river), airborne pollutants (dust, fog), and chemical contaminants. These conditions cause rust, deformation, and material degradation. Without effective protection, bolts can compromise track stability and safety. Corrosion protection is therefore essential.
Corrosion Protection Methods for Track Bolts
Material Selection: Use corrosion-resistant materials such as stainless steel, copper, or titanium.
Surface Treatments: Apply coatings such as galvanizing, chroming, or spraying.
Anti-corrosion Agents: Use anti-rust oil or corrosion inhibitors for coating.
Regular Maintenance: Perform inspections and replace damaged bolts as needed.
Function of Rail Fastening Systems
Rail fastening systems connect rails to sleepers (or other bases). Also known as intermediate fastening parts, they ensure track gauge stability and prevent longitudinal or lateral rail displacement.
Types include:
- Clip Fastening Systems
- Baseplate Fastening Systems
- Elastic Fastening Systems
Surface Treatment Selection for Fasteners
GNEE RAIL continuously develops new products, technologies, and concepts in the railway industry. Its fastening systems are certified in Europe and in mass production.
Most commercial fasteners are made of carbon or alloy steel. Even corrosion-resistant fasteners require surface treatment to prevent galvanic corrosion. Coatings must adhere well and resist peeling during installation or removal.
For threaded fasteners, the coating must be thin enough to maintain proper thread fit.
Micro-Coating Technology
Micro-coatings reduce material thickness while ensuring corrosion protection. Coating temperature limits are often lower than those of the fastener materials. Therefore, thermal performance must also be considered.
While surface treatments often focus on aesthetics and corrosion resistance, their effect on fastening performance is critical. The chosen coating should ensure consistent torque-tension characteristics, maintaining reliable pre-load force during installation.
GNEE RAIL is deeply involved in the field of rail transit fastening, specializing in the production of various types of railway-specific connectors. The factory implements full-process quality management, and establishes strict inspection standards from raw material procurement to finished product delivery to ensure that each product meets industry specifications. The product line covers series such as buckles, anchoring systems, and anti-loosening components, which can be adapted to different rail types and climatic conditions. We have established a rapid response mechanism to provide customers with a full range of services such as technical consultation, product selection, and after-sales support. With stable product performance and professional solutions, our products have been successfully used in multiple rail transit projects, and are committed to providing reliable guarantees for the safe operation of railways.If you need to purchase a railway fastener system, please contact us and we will serve you 24 hours a day.