Alloy cladding method for steel rail

Abstract

The invention discloses an alloy cladding method for a steel rail. The alloy cladding method for the steel rail is characterized by comprising the following steps that a, a steel rail cladding machineis put on the steel rail, a plasma welding gun moves at a constant speed, and the upper portion of a to-be-clad position is clad with alloy; b, a formed alloy strip is located on the central partially inner side of a rail head tread surface of the steel rail, the width of the alloy strip is 4-40 mm, and the thickness of a heat affected zone of the steel rail is controlled to be 0.3-3 mm; and c, an induction heater is arranged above the alloy strip, and after the alloy strip stands for 2-180 seconds, the induction heater is moved at a constant speed in the length direction of the steel rail toconduct heating until the texture of the heat affected zone of the heated steel rail is tempered sorbite or tempered sorbite and tempered troostite or tempered troostite. According to the alloy cladding method for the steel rail, the cooling speed of the cladding heat affected zone does not need to be controlled, the size and weight of the steel rail cladding machine can be reduced, the claddingapplicability and cladding efficiency are improved, and the effect that the performance of the texture of the heat affected zone after cladding of the steel rail meets the steel rail use requirementsis guaranteed.

Description

technical field [0001] The invention relates to the technical field of rail cladding, in particular to a cladding alloy method for steel rails. Background technique [0002] The track circuit is an electrical circuit composed of two rails of the railway line as conductors, and the signal power supply and receiving equipment are connected with lead wires. In sections where trains rarely pass through for a long time, such as shunting lines, cargo lines, and special lines, the rail surface is severely oxidized and rusted. On, indicating that the track circuit has lost the function of checking the occupancy status of the track section. This phenomenon is called poor track circuit shunting. Cladding a layer of anti-rust and wear-resistant alloy belt on the rail head tread in the bad section of the track circuit, so that the wheel and the non-rust wear-resistant alloy belt can be effectively contacted, which can effectively eliminate the bad phenomenon of the track circuit shunt...

AI Technical Summary

Problems solved by technology

[0007] 2. Generator power is used for cladding site construction. If the power of the generator exceeds 40kw, the equipment is too heavy to be transported manually

The cladding moving speed is too slow, usually the cladding speed is 30-40m / h, and the section with poor branching is generally 60-100m / place, while the working time of the skylight is only 1h / day, and the construction of one bad branching section requires 2 -3 days, low construction efficiency and high cost

[0008] 3. In northern my country and high-altitude areas, the temperature in winter is low, and the existing methods of cladding alloys are limited.

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