Aluminothermic Welding Rail

Aluminothermic welding, also known as thermit welding, is a process commonly used to weld railway tracks. This method of welding provides a high-quality, strong and durable weld that can withstand the heavy loads and stresses placed on railway tracks.

Aluminothermic welding works by using a chemical reaction to produce high temperatures that melt the ends of two rail sections together. The reaction is typically initiated by an exothermic reaction between powdered aluminium and iron oxide. The heat generated by this reaction is used to melt the rail ends and then pour molten steel into a mold to create a solid, seamless weld.

One of the major advantages of aluminothermic welding is that it can be performed quickly and efficiently, without the need for large equipment or extensive site preparation. It is also a relatively low-cost option for welding rails, which makes it an attractive option for railway construction and maintenance projects.

Here is a table that compares aluminothermic welding with other common methods of welding rails:

Welding Method	Advantages	Disadvantages
Aluminothermic welding	High-quality weld; quick and efficient; relatively low cost	Requires trained technicians; requires specialized equipment; can be dangerous if not performed correctly
Electric arc welding	Can be performed on-site; works well on curved tracks	Can be slow and labor-intensive; can produce lower-quality welds
Flash butt welding	High-quality weld; works well on straight tracks; efficient for long sections of rail	Requires large and expensive equipment; can be difficult to use on curved tracks
Gas welding	Simple process; works well for small repairs	May produce lower-quality welds; can be time-consuming for larger repairs

In summary, aluminothermic welding is a widely used and effective method of welding railway tracks. It provides a high-quality, strong and durable weld, and is a relatively quick and cost-effective option. While there are alternative methods of welding rails available, each method has its own advantages and disadvantages, which should be considered when choosing the best option for a specific rail welding project.

Thermite Powder/Thermite Welding Powder

It is thermal welding supplies. A prepared package containing the correct quantity of Thermite Welding Powder for the type of weld to be made. Thermite powder is a pyrotechnic composition usually consisting of metal powder and metal oxide. Thermite welding powder is not usually explosive, but it does create extremely high temperatures in a very small area for a short period.

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Sand Mould for Thermit Welding

Thermite Welding Supplies: Sand Mould For Track, the primary material is SiO2(Silicon dioxide). It binds up the two ends of the rail and makes up an inner space to contain the liquid steel from the portion powder reaction.

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Luting Sand for Thermit Welding

Thermite Welding Supplies: Luting Sand Main material is SiO2(Silicon dioxide). It is used to seal the gap of the sand mold to avoid liquid steel leaking. 1770~2000℃ Refractory temperature, 3kg/weld.

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Crucible Lining for Thermit Welding

Magnesium oxide crucibles are Thermite welding supplies. Magnesium Oxide Crucible Lining are sintered in very high temperature, so it should be protected from any moisture at all time, otherwise it may cause failure when welding.

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One Shot Crucible for Thermit Welding

Thermite Welding Supplies: One Shot Crucible of inner crucible is MgO, outside is steel plate barrel. It is used as the reacting container of portion powder.

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Rail Shearing Machine

Rail Shearing Machine is a mechanical device that is used to cut and remove the excess or unwanted part of the rails after Thermit Welding.

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Rail Grinding Machine

Rail Grinding Machine is a type of equipment used in rail welding. It is used for profile grinding on the rail welding and rail damage maintenance, the grinding surface is smooth and clean and also keeps the original rail head profile size. Applicable to all types of rail laying scenes and repairing welding jobs.

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Rail Cutting Machine

It is a railway track maintenance equipment, it is not only cutting rail fast, high quality, and low wear. It relies on the rail clamped tightly locking. It is suitable for railway maintenance and repair, broken rail repair, and welding cutting in long rail.

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