XOVEC Orthopedic Implants
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Rail shoulder is cast in the concrete rail ties to fix the elastic rail clips. There are two types of rail shoulders available: the cast-in shoulder and the weld-on shoulder, both of which are used for the secure fixing of elastic rail clips. The casting shoulders, as an embedded part of the railway fastening system, are pressed into concrete sleepers and work together with the E-clip to fasten the rail. The cast-in shoulder is manufactured through iron casting processes following international standards such as GB/T 1348-1988, ISO1038, and DIN 1693.
| Application | UIC54 | UIC60 | 115RE, 50kg, 60kg, BS80lbs, BS100lbs |
|---|---|---|---|
| Material Name | QT500-7 | QT450-10 | QT400-15 |
| Standard | GB 1348-88 | GB 1348-88 | GB 1348-89 |
| Chemical Composition | C:3.60-3.80, Si:2.50-2.90, Mn:0.2-0.5, P:≤0.08, S:≤0.025 | C:3.40-3.90, Si:2.70-3.00, Mn:0.2-0.5, P:≤0.07, S:≤0.03 | C:3.50-3.60, Si:3.0-3.2, Mn:≤0.5, P:≤0.07, S:≤0.02 |
The rail shoulder is a semi-embedded part cast in concrete rail ties to fix the elastic rail clip to the base plate. There are two common types of rail shoulders: Cast-in Shoulder and Weld-on Shoulder. One is the Single Stem Iron Shoulder used in pre-stressed concrete ties, and the other is the Twin Stem Iron Shoulder used in Bi-Block or Twin Block concrete ties.
| Material | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|---|
| QT400-15 (GGG40) | 400 | 250 | 15 |
| QT450-10 (GGG45) | 450 | 310 | 10 |
| QT500-7 (GGG50) | 500 | 320 | 7 |
The weld-on shoulder is used at typical rail positions where the shoulder is welded onto a flat steel plate rather than a standard tie plate. The production method involves hot forging according to AREA standards. The steel material can be low or medium carbon steel. These shoulders are particularly cost-effective for switch and crossing layouts where vertical rail geometry is employed.
