Haifeng Automation Upgrades Polyurethane Rail Pad Production Line, Helping Uruguayan Enterprise Meet International Rail Standards
Customer Background
The client is a local professional manufacturer of polyurethane rail transit components in Uruguay, with 16 years of experience in R&D and production of polyurethane rail pads and under-rail elastic pads for railways, intercity rails and South American commuter rail systems. Its core customers include the National Railways of Uruguay, regional rail operators in South America and heavy-haul railway projects in Latin America. All products must comply with international general rail standards and meet the requirements of DIN 7196 and EN 13146, with mandatory requirements on dynamic fatigue, low-temperature toughness, dimensional accuracy, long-term deformation and halogen-free environmental protection.
The enterprise’s original semi-automatic production lines had hardware bottlenecks in high-load elastic stability, precise dimensional control, wide-temperature adaptability and full-process data traceability, failing to meet the batch consistency and stable supply requirements of high-end customers such as the National Railways of Uruguay. It urgently needed an intelligent production line upgrade by Haifeng Automation.
Project Overview
A high-end rail pad manufacturer in Uruguay had long been plagued by core bottlenecks including fluctuating elastic modulus, insufficient fatigue life, unstable performance and lack of closed-loop process control, making it difficult to pass the annual audit and batch supply certification of the National Railways of Uruguay.
Based on the industry demands of international rail standards, stable molding of heavy-duty high-elastic polyurethane and precise dimensional control, Haifeng Automation customized 3 sets of JJF-G series dedicated high-pressure foaming production lines for the client. Relying on Haifeng’s core advantages of high-pressure mixing, heavy-duty steady-state molding and digital control, it realized rail-grade mass production with high reliability, consistency and stability, helping the client consolidate its position as a core supplier to the National Railways of Uruguay and expand into the high-end rail transit markets in South America and Latin America.
Core Customer Pain Points
01
Insufficient elastic modulus and fatigue stability, failing to meet international rail standards
Uneven mixing of traditional equipment led to fluctuating elastic modulus and sparse cell structure of the pads. The dynamic fatigue life could not reach the mandatory railway standard of 3 million cycles without damage, and deformation, cracking and elasticity loss easily occurred under high load.
02
Insufficient wide-temperature toughness, poor adaptability to extreme environments
Rail sections in the South American Plateau and cold regions of Latin America require no cracking and no elastic decay at -40℃. Traditional processes could not ensure stable low-temperature toughness, limiting the application scenarios of products.
03
Insufficient dimensional accuracy and flatness, poor rail assembly adaptability
Rail pads have extremely high requirements for dimensional tolerance and flatness. The traditional mold table process had large deviations, failing to meet the precise assembly requirements of railway tracks and easily causing installation interference and uneven stress.
04
Poor adaptability to halogen-free eco-friendly raw materials, high compliance threshold
International rail projects mandatorily require halogen-free, low-smoke and non-toxic eco-friendly polyurethane raw materials. Traditional equipment had poor adaptability to highly reactive halogen-free materials, easily leading to incomplete curing and performance attenuation.
05
No full-process data traceability, unable to pass rail system audits
Rail components require complete records of production processes and traceable performance. Traditional equipment lacked digital control and could not provide process consistency proof required by the National Railways of Uruguay, bringing high audit failure risks.
Haifeng's Solutions
01
High-pressure foaming system achieves heavy-duty uniform mixing and ensures product fatigue life
Adopting Haifeng JJF-G series high-pressure foaming machines, it relies on the equipment characteristics of high-pressure turbulent mixing and bubble-free homogeneous molding to ensure dense and uniform polyurethane cells from the source, keeping the elastic modulus, fatigue strength and load resistance highly stable, and fully meeting the DIN 7196 dynamic fatigue standard.
02
High-pressure steady-state temperature control molding improves wide-temperature toughness of products
Equipped with a special closed-loop constant-temperature control system for high pressure, it accurately controls the foaming and curing rhythm, eliminates performance fluctuations caused by temperature differences, and ensures that the toughness and elasticity of the pads do not attenuate in the wide temperature range of -40℃ to 80℃, adapting to all-scenario railway lines.
03
Heavy-duty precision molding unit ensures rail-grade dimensional accuracy
Configured with heavy-duty precision molding tooling, it realizes synchronous curing and uniform stress, controlling dimensional deviation and flatness within railway assembly standards and completely solving installation adaptation problems.
04
High-pressure adaptation of halogen-free materials meets European railway environmental compliance requirements
The JJF-G high-pressure system optimizes the flow channel and mixing structure for halogen-free and highly reactive special railway materials, ensuring full reaction and complete curing of materials, and fully complying with the mandatory halogen-free environmental protection requirements of European railways.
05
High-pressure production line data traceability system passes rail system audits
The system automatically collects core data such as high-pressure, mixing ratio, temperature control and curing time, and generates complete traceability reports to meet the audit and certification requirements of the National Railways of Uruguay and South American rail operators.
06
Overseas on-site services ensure stable operation of production lines
Haifeng engineers go abroad to complete equipment installation, commissioning, process optimization and operation training. It provides a 1-year whole-machine warranty and 24-hour remote technical support, with rapid direct shipment of key spare parts to ensure long-term stable operation of the production lines.
Core Achievements of Project Implementation
Product performance fully meets standards, consolidating core supplier status to the National Railways of Uruguay
The dynamic fatigue life, elastic modulus, low-temperature toughness and dimensional accuracy of rail pads fully meet DIN 7196 and EN 13146 standards, passing the strict certification of the National Railways of Uruguay, with core order share increasing by 40%.
Stable wide-temperature performance, realizing all-scenario rail adaptation
Products have no performance attenuation in the environment of -40℃ to 80℃, successfully entering the supply system of South American Plateau railways and Latin American heavy-haul railways.
Full compliance of dimensional accuracy, assembly fit rate reaching 100%
Flatness and dimensional deviation meet the precise assembly requirements of railways, with no installation interference and uniform stress, achieving zero customer complaints.
Comprehensive upgrade of environmental compliance, breaking through international rail market barriers
The production line is perfectly compatible with halogen-free eco-friendly raw materials, meeting the low-smoke and non-toxic requirements of international railways, and completely eliminating compliance barriers in high-end markets.
Batch stability and traceability meet standards, audit pass rate reaching 100%
Full-process digital control achieves high uniformity of cross-batch performance, successfully passing the annual audit and quality traceability inspection of the National Railways of Uruguay.
