132RE 136 AREMA forging and casting fishplates joint bar with 6 holes and bolts
Methods to improve fishplates
According to the mechanism of occurrence and development of fishplate cracks and the theory of fretting fatigue, three important factors that affect crack generation, namely friction coefficient, slip amplitude and contact pressure, can be considered to reduce the probability of crack generation.
(1) Reduce the friction coefficient. This can be achieved through various channels, such as surface treatment, improving surface quality or adding some form of intermediary to the material contact surface.
(2) Reduce the slip amplitude. That is to reduce the amplitude of the relative action between the rail and the fishplate. The slip amplitude can be reduced by adjusting the tightening force between the rail and the fishplate, or by improving the joint condition and reducing the impact effect. It is observed that the glue-bonded fishplates rarely fracture, which also indicates the effect of controlling the slip amplitude on the life of the fishplates.
(3) Reduce the contact pressure. There are many factors affecting the contact pressure, and reducing the contact pressure will reduce the strength of the interaction force between the rail and the fishplate. Working conditions, axle load, vehicle speed, etc. will have a greater impact on it, some of which must be endured under working conditions, such as load, vehicle speed, etc., and some can be adjusted by improving working conditions, such as maintaining proper good rail joints, good joint maintenance, etc. In addition, the shape of the mating surface of the rail and the fishplate will also affect the size of the contact pressure.
According to the process of crack generation and expansion of the fishplate, and also from our rough statistics of failed fishplates, the early failure due to material reasons accounts for a considerable proportion, especially the increase in material brittleness caused by coarse grains or severe mixed crystals. Case. In addition, the surface decarburization of materials should also be paid enough attention. Therefore, the production of fishplates must be carried out in strict accordance with the production process and the prescribed heat treatment system, and at the same time, the quality inspection must be passed to reduce the early failure caused by the material. Moreover, from the point of view of the complex use conditions of the fish plate, ensuring its production quality is also one of the most effective safety measures.
Railway parts products we can provide:
1, Rail Spike Series: Rail Screw Spike, rail Dog Spike, rail Elastic Spike etc.
2, Track Bolt series: Track Bolt, Segment Bolt, Metro Bolt, Tunnel Bolt, Hex Bolt, Square Bolt, Turnout Bolt, Fishtail Bolt, T bolt etc
3, Rail Clip series: Nabla rail Clip, Elastic rail Clip, SKL rail Tension Clamp, O rail Clip, Gauge Lock Clip etc
4, Steel Rails series: Railway rails, Crane Rails, Mining Rails, Over the head Rails, etc
5, Steel rail wheels series: Train Wheels, Crane Wheels, Hi-rail vehicle wheels, etc
6, Other materials and accessories: Rail Gauge Insulator, rail rubber Pad, rail Fish plate, Nut, rail Plastic Dowel, rail Tie plate, Spring Washer, Flat Washer, Cast Iron Insert, Anti Creeper, rail Gauge Rod etc.
We also make rail fastenings for crane rail and elevator guide rail, along with other related products. We manufacture according to GB/TB (Chinese national standards and railway standards), AREA, UIC, BS, DIN, ASTM, and AS standards.
Our products are mainly made through hot forging.
The threads of rail screw spikes are made by hot rolling with special threading machines.
We produce metric threads, BS, BSW, TR thread, or round threads.
Our high strength bolts come in different specifications of Class 4.8, 4.6, 5.6, 5.8, 6.8, 8.8, 10.9, and 12.9. A variety of non-standard fastening is also available. We can customize our products using customer drawings or samples as well.
Why choose us:
1. The company is in a leading position in the industry and has obtained SGS-ISO9001: 2008 quality system certification and CRCC certification. Quality is guaranteed.
2. We have 8 professional sales staff and more than 60 professional engineers. Can provide professional and fast suggestions and quotations for your railway customized products
3. Ma′anshan is a port city. We can provide you with faster shipping services
4. 20 years of production and sales experience. Deal with all kinds of after-sales problems for you in time.
Kingrail supply various railway products:
railcar spares: wheels, axles, bearings, shafts, bogie spares, forging and casting products
rail track materials: fisplates, steel rail and accessories, tie plates, clips, bolts and nuts, etc
Both small and big orders are welcome!