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Packing of sleepers

After packing is completed, the alignment and top should be checked carefully and minor adjustments made as needed. While the packing is being carried out, the second rail is brought to the correct cross levels thereby ensuring perfect surfacing of the track. In the case of wooden and steel trough sleepers, it …

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Essentials of Track Maintenance

As mentioned earlier, a well-maintained track provides the base for a safe and comfortable journey. Therefore, for a track to serve its purpose well, the followingcharacteristics are required of it. (a) The gauge should be correct or within the specified limits (b) There should be no difference in cross levels except …

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Track Maintenance

Railway tracks can be maintained either conventionally by manual labour or by the application of modern methods of track maintenance such as mechanical tamping or measured shovel packing. In India, maintaining tracks has traditionally been a manual activity and the ‘calendar system of maintenance’ has taken deep roots. In this system, a timetable or …

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Modern Welded Railway Track

As mentioned earlier, a rail joint is the weakest link in the railway track. The ill effects of the rail joint are well known, including the fact that a track with joints requires about 30% extra maintenance work as compared to a plain track. The best remedy for the problems caused by rail …

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Recent Developments in Welding Techniques

The welding methods described above have been further improved in the recent past by employing new techniques and equipment. These techniques and equipment are described below in detail. Automatic welding recorder The invention of a welding recorder, for controlling the quality of welding in the flash butt welding method is a recent development. …

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Testing of Thermit Welded Joints

A rail joint should be tested for its strength and hardness before it can be accepted for use on the railways. To this end, the following tests are prescribed on Indian Railways. Reaction test The characteristic reaction of the thermit mixture when it is placed in a standard crucible is scrutinized to …

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Precautions During Thermit Welding

In order to ensure the quality of thermit welded joints, the following precautions should be taken. Follow prescribed procedure Thermit welding of joints should be carried out strictly as per the prescribed norms. The horizontal and vertical alignment of two rail ends require special attention at the joint. In particular, case should …

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