↵Rail Fast Clip Fastening System
Railway Clip is used to fasten the rails to the underlying base plate together with the concrete sleeper. A variety of different types of heavy-duty clips are used to fasten the rails to the underlying baseplate or Sleeper, one common being the E Clip, which is shaped like a stubby paperclip. Another one is the SKL Tension Clamp, which is also the most widely used type all over the world. Others like KPO Clamp and Nabla Clip, also used in different situations.
Technical Specifications:
| Parameter | FAST Standard | FAST Heavy Haul | FAST Transit | FAST Corrosion-Resistant |
|---|---|---|---|---|
| Housing Material | ASTM A128 Gr B3 | ASTM A128 Gr C | ASTM A743 Gr CN7M | ASTM A890 Gr 4A (Duplex) |
| Spring Material | 51CrV4 | 60SiCr7 | 54SiCr6 | 50CrV4 |
| Toe Load Range | 12-16 kN | 18-22 kN | 10-14 kN | 12-16 kN |
| Wear Compensation | ±8 mm | ±10 mm | ±6 mm | ±8 mm |
| Weight per Assembly | 8.5-9.5 kg | 10.5-11.5 kg | 7.5-8.5 kg | 9.0-10.0 kg |
| Installation Time | 45-60 seconds | 60-75 seconds | 40-55 seconds | 50-65 seconds |
Integrated System Architecture
Monobloc housing design: Single-piece high-manganese steel casting (11-14% Mn) encapsulates all functional elements, providing inherent corrosion resistance and eliminating 85% of traditional assembly components
Self-regulating wedge mechanism: Inclined wedge surface (12° angle) with progressive spring creates automatic tension adjustment compensating for ±8mm rail wear without manual intervention
Triaxial force distribution: Engineered to simultaneously manage vertical loads (up to 40kN), lateral forces (25kN), and longitudinal creep (15kN) through geometric load paths within housing
Material Science & Durability Engineering
- Austenitic manganese steel: ASTM A128 Grade B3 composition (1.1%C, 12.5%Mn) provides unique combination of high toughness (150J Charpy at -40°C) and work-hardening capability
- Precision sand casting: No-bake molding process achieves as-cast dimensional accuracy of ±0.5mm with controlled cooling to prevent carbide precipitation at grain boundaries
- Surface enhancement: Shot peening with 2.0mm cast steel balls creates 0.3-0.5mm compressive layer, followed by phosphate coating for corrosion inhibition
Gnee Professional supplier
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