Rail Tie Plate For Railroad Fastening
Railroad plates is also refered to as tie plate, base plate, or sole plate. It is an important part in rail fastening system. A railroad plate is placed between the railroad track and the railroad tie. They are usually made of steel by rolling, forging or casting and fit for various rail section such as UIC60, UIC54, RN45, 90A, etc..
Railroad Fastening:rail tie plate
A tie plate, baseplate or sole plate is a steel plate used on rail tracks between flanged T rail and the crossties. The tie plate increases bearing area and holds the rail to correct gauge. They are fastened to wooden ties by means of spikes or bolts through holes in the plate.
The railway rail and the sleeper are connected by a metal underlay under the rail. The under-metal pad is one of the important fasteners for fixing the rail, and is also the main force-supporting component for supporting the rail. The precision forging high-speed rail tie plate pad replaces the original casting process by forging process, and its inherent quality is significantly superior to the original casting product.
Rail Tie Plate Characteristics
- The internal structure is fine. The forged tie plate can ensure the continuity of the metal fiber structure, so that the fiber structure of the forging is consistent with the shape of the forging, the metal flow line is complete, and the internal organization is uniform. During the test, the parts can be found along the longitudinal direction. A very complete and distinct forged fiber streamline.
- Uniform chemical composition. The chemical composition of the precision forged tie plate can ensure that the grain is fine and dense, no bubbles shrinkage, no component segregation, no impurity residue.
- Enhanced mechanical properties. The tie plate produced by the precision forging process has high strength and good toughness, and the pad is subjected to a bending test at a 90-degree angle. After the bending test, the pad does not show any crack.
- Product quality is stable. The high-iron rail tie plate produced from low-carbon high-strength steel can be operated in an environment with a speed of over 250km/h and a temperature of -40 °C to +70 °C.
Rail Tie Plate Steel Chemical Composition
| Steel Grade | Carbon | Manganese | Phosphorus | Sulphur | Silicon | Residual element |
|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr≤0.35 | |
| ZG200-400 | 0.20 | 0.80 | 0.04 | 0.04 | 0.50 | Cr≤0.35 |
| ZG230-450 | 0.30 | 0.90 | 0.04 | 0.04 | 0.50 | Ni≤0.30 |
| ZG270-500 | 0.40 | 0.90 | 0.04 | 0.04 | 0.50 | Mo≤0.20 |
| ZG310-570 | 0.50 | 0.90 | 0.04 | 0.04 | 0.60 | Cu≤0.30 |
| ZG340-640 | 0.60 | 0.90 | 0.04 | 0.04 | 0.60 | V≤0.05 |
Types of railway tie plate
In actual production, there are three kinds of processes of rail tie plates: by forging, by rolling and by casting. Each type of rail tie plate has its unique features on the process of utility.
As the most competitive rail tie plate manufacture in China, GNEE RAIL is always committed to produce high quality rail tie plates of these three types. With dozens of dies for rail tie plates and high level production technology, we have large scale production to make the heavy demand of customers.
Rail tie plates by rolling
Up to now, we have successfully produced the various types of dies for rail tie plates, such as 11 inches, 14 inches and 14-3/4 inch for both 5-1/2 and 6 inch rail tie plates.
Rail tie plates by casting
Among these three types of production processes of rail tie plates, casting is a common technology and it is also the most cost-effective way. As rail tie plate is a hot sale of for us, we have two casting workshops for casting materials especially. We are capable to develop die from most modern way to ensure the precise dimensions of tie plates, from hot pre-coated sand or machining way.
Rail tie plates by forging
In our plant, we own 300T~1600T forging friction press and 7 die forging production lines with 5T electricity liquid hammers. Our forging annual capacity can reach up to 12000 tons of rail tie plates, and a capacity of 400,000 pieces of forging rail tie plates.
GNEE RAIL not only provides standard iron rail tie plates but also offers customization options including size, hole spacing, and surface treatments such as hot-dip galvanizing, black oxide, or painting. In addition, GNEE RAIL supplies a wide range of railway fastening products such as rail clips, rail bolts, fish plates, and rubber pads, along with installation guidance and after-sales support to ensure reliable and high-performance track solutions.
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