PU Foam Machine for Railway & Subway Damping Pads
High-performance PU foam casting system for railway damping pads in high-speed rail, heavy-haul & subway transit. Delivers low-density, lightweight pads with excellent elasticity, impact absorption & dynamic fatigue resistance.
Discharge Flow Rate
333 – 1000 g (adjustable)
Metering Accuracy
±0.5%
Tank Configuration
1A1B
Certifications
CE, ISO9001, EN 60204-1
Product Overview
A high-performance PU foam casting system developed for industrialized manufacturing of elastic pads for high-speed railways, heavy-haul railways, subways and full rail transit systems.
The HF-LPM-1A1B-R is a state-of-the-art polyurethane foam casting machine specifically developed for railway and subway damping pad production.
It features a 1A1B configuration with intelligent control system, high-shear mixing head, and floating mechanical sealing structure that realizes homogeneous mixing with zero leakage and prevents material backflow during long-term continuous production.
The multi-point temperature control system restricts temperature deviation within ±2°C to maintain steady raw material conditions.
Matched with PLC controller and touch screen HMI, operators can precisely set key parameters including raw material ratio, injection volume, injection duration and temperature.
The intuitive interface delivers simple operation and easy maintenance, ensuring consistent quality of every single pad.
The machine supports modular upgrade solutions for transforming manual or semi-automatic workshops into fully automatic production lines, seamlessly integrating with rotary carousel lines to achieve one-stop automatic workflows including automatic feeding, multi-station pouring, constant-temperature mold curing and robotic demolding.
Damping Pad Production Workflow
Raw Material Preparation
Load polyol and isocyanate components into respective tanks; set temperature and ratio parameters per formulation requirements (A:B = 100:80–120).
Metering & High-Shear Mixing
Precisely meter components at the set ratio and mix at high speed (5,000 rpm) using the high-shear mixing head with floating mechanical seal for homogeneous, void-free dispersion.
Mold Filling & Foaming
Inject the mixed PU foam into molds under controlled temperature and pressure; allow foaming and curing to form microcellular elastic structures with superior vibration damping properties.
Demolding & Finishing
After curing, perform robotic or manual demolding; inspect finished pads for density, hardness, and dimensional accuracy per railway industry standards.
Request a Quote for Your Railway Damping Pad Production Line
Technical Specifications
All data are based on standard factory testing conditions. Values are for reference; actual performance may vary with formulation and operating environment.
| Technical Parameter | |
|---|---|
| Model | HF-LPM-1A1B-R |
| Discharge Flow Rate | 333 – 1000 g (adjustable) |
| Raw Material Mix Ratio | A : B = 100 : 80 – 120 |
| Tank Volume | 250 L |
| Total Motor Power | 14 kW |
| Mixing Head Rotational Speed | 5000 rpm (adjustable) |
| Metering Accuracy | ±0.5% |
| Core Features | Intelligent control, stable production, premium product properties, reliable operation under harsh railway environments |
| Warranty Period | 1 year |
| Net Weight | 1400 kg |
| Certifications | CE, ISO9001, EN 60204-1 |
| Brand Name | Haifeng |
Key Advantages
The HF-LPM-1A1B-R integrates intelligent control, stable production, superior product properties, and strong adaptability to fully meet the demands of high-volume railway damping pad manufacturing.
Intelligent Control System
High-shear mixing head with floating mechanical seal ensures homogeneous mixing with zero leakage. Multi-point temperature control restricts deviation within ±2°C. PLC + touch screen HMI allows precise setting of ratio, volume, duration and temperature.
Superior Product Performance
Produces low-density, lightweight pads with exceptional elasticity, outstanding impact energy absorption, and superior dynamic flex fatigue resistance. Material offers excellent oil resistance and anti-aging properties for harsh outdoor environments.
Strong Adaptability
Flexible adjustment of formulas and process parameters enables a single unit to produce pads with various densities, hardness and dimensions, meeting diverse demands of high-speed rail, heavy-haul rail and subway projects.
Compatible with Carousel Production Lines
Supports modular upgrade for fully automatic production lines. Seamlessly integrates with rotary carousel lines for one-stop workflows: automatic feeding, multi-station pouring, constant-temperature curing and robotic demolding.
High Output Capacity
Supports thousands of pads per kilometer of track with short single-piece production cycle. Enables unattended continuous operation to comprehensively lift overall production efficiency and output capacity.
Built for Railway Operating Conditions
Withstands heavy impact loads from passing trains and resists permanent deformation after repeated compression and rebound cycles. Maintains stable mechanical performance under intense sunlight, heavy rainfall and drastic temperature fluctuations.
Ready to Upgrade Your Railway Damping Pad Production?
Contact our engineering team to discuss your specific railway pad requirements and get a tailored solution for high-speed rail, heavy-haul or subway projects.
Industries & Applications
Developed for industrialized manufacturing of polyurethane elastic pads for high-speed railways, heavy-haul railways, subways and full rail transit systems. Typical products include under-rail pads, under-sleeper elastic mats, and microcellular elastic blocks.
Download the Full Technical Brochure
Contact UsComplete Your Production Line
Integrate the product with our full range of auxiliary equipment for a turnkey polyurethane processing system.
Epoxy Pourer for Printing Roller
Low Pressure Polyurethane Machine
Hydraulic Seal PU Casting Machine
Elastomer Polyurethane Machine
Monomer Cast MC Nylon Casting Machine
Elastomer Polyurethane Machine
Roller PU Casting Machine for Cold Rolling
Elastomer Polyurethane Machine