Steel Grade Q235
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How do seamless rails solve thermal stress problems?
- In the laying time, according to the laying of long-term local meteorological data, calculate a fit temperature and corresponding stress, during the production of rail, the rail using tensile data properly, the internal rail leaving a stress. In this way, even if the rail is stretched and contracted, it is only offset with the original stress, so as to ensure the expansion of the rail within the controllable ranges
What are the requirements of the two rails on the track?
- Two rail laying in should be appropriately tilted to the heart, that is to have rail bottom slope.s
What railway tracks are also live?
- The power supply technology is adopted in many cities abroad and in China, with the advantages of beautiful appearance, no visual obstacles of the electric pole and power supply line, and low maintenance cost. The supply rails are usually equipped with protective covers.s
Why not Rail Rail corrosion?
- The friction force of railway locomotives, EMUs can advance the power comes from between the wheel and rail forces, so as long as there is a certain volume of the railway line, the rail surfaces are smooth and no traces of rust.s
Is the rail of the railway made of steel? Or iron or iron?
- It's iron, but it's a metal forged by a variety of alloys.s
What kind of rail needs polishing?
- Therefore, the rail damage must be eliminated or repaired in time so as to avoid the safety of rail transit operation. These repair measures, such as rail oiling, rail grinding, etc., in which rail grinding due to its high efficiency by the world wide range of railway applications.s
Why high-speed rail tracks are seamless rail will not expand, how to force the expansion and contraction limit?
- So the average rail limit is 140 kilometers per hour. This is undoubtedly a bottleneck for high-speed rail. Therefore, high-speed rail rail all take 1 kilometers or even a few kilometers, to reduce wheel impact force.s
High iron seamless rail is how to solve the problem of the thermal contraction account?
- The rail temperature force is used on the railway line to lock the track with strong line resistance, which limits the free expansion of the rail. In our country, we use high strength bolts, gusset fasteners or elastic fasteners to restrict the rail. In order to reduce the temperature force of the rail, the line should be locked when the rail is at the right temperature. The local maximum rail temperature is used to lock the rail temperature with the lowest rail temperature above the average height.s
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