Basic Specifications
Model NO.
QT450-10 QT500-7 Embedded Rail Shoulder
Certification
ISO14001, ISO9001
Transport Package
Cartons, Woven-Bags or Gunny-Bags in Wooden Cases
Production Capacity
20000PCS/Day
Product Description
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 fixing of elastic rail clips. The casting shoulders as the embedded part of the rail way fastening system are pressed in concrete sleeper and work together with the E clip to fasten the rail.
| Parameter |
UIC54 |
UIC60 |
Other Standards |
| Application |
UIC54 |
UIC60 |
115RE, 50kg rail, 60kg rail, BS80lbs, BS100lbs |
| Name |
QT500-7 |
QT450-10 |
QT400-15 |
| Standard |
GB 1348-88 |
GB 1348-88 |
GB 1348-89 |
Cast-in Rail Shoulder Mechanical Property
| 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 |
Chemical Composition Requirement
| Material |
C |
Si |
Mn |
P |
S |
| QT400-15 |
3.6-3.8 |
3.0-3.2 |
0.5 |
0.07 |
0.02 |
| Qt450-10 |
3.4-3.9 |
3.7-3.0 |
0.5 |
0.07 |
0.03 |
| QT500-7 |
3.4-3.8 |
2.5-2.9 |
0.6 |
0.08 |
0.025 |
Weld-on Rail Shoulder
The weld-on shoulder is used at the typical position of rail where the rail shoulder is weld on flat steel plate rather than the standard tie plate. The weld-on shoulder production method is hot forging, it is fabricated according to AREA standard. The steel material type for weld-on shoulders production can be low or medium carbon steel. These shoulders can be welded onto longer length steel sleeper sections or bearers for specialized switch and crossing layouts.
Frequently Asked Questions
1. What is the primary function of a rail shoulder?
A rail shoulder is an embedded or welded component used to fix elastic rail clips to the rail ties or base plates, ensuring the stability and alignment of the railway track.
2. What are the differences between Cast-in and Weld-on shoulders?
Cast-in shoulders are integrated into concrete sleepers during the casting process, while weld-on shoulders are forged and welded onto steel plates or sleepers, offering flexibility for custom layouts like switches and crossings.
3. Which ductile iron grades are used for manufacturing?
Commonly used grades include QT400-15 (GGG40), QT450-10 (GGG45), and QT500-7 (GGG50), each offering different levels of tensile strength and elongation to suit various rail standards.
4. Can rail shoulders be customized for specific rail types?
Yes, they are compatible with various rail profiles including UIC54, UIC60, 115RE, 50kg, and 60kg rails, and can be fabricated according to specific AREA or international standards.
5. What is the production capacity for these rail components?
The production facility is capable of producing up to 20,000 pieces per day to meet large-scale infrastructure demands.
6. What materials are used for weld-on shoulders?
Weld-on shoulders are typically manufactured from low or medium carbon steel through a hot forging process to ensure weldability and durability.
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