A method of heating cladding alloys on rails to solve poor branching

Abstract

The invention discloses a method for preventing bad shunting through heating cladding alloy on a steel rail. A welding gun is arranged above the part to be clad of the steel rail tread; a planar inductive heater is arranged behind the welding gun and consists of a first heating surface and a second heating surface which are on the same horizontal plane and connected together; the first heating surface is trapezoidal, square or circular, and the second heating surface adopts a linear structure; the position of the planar inductive heater is adjustable in the transverse direction of the steel rail tread; the welding gun moves lengthways at the part to be clad of the steel rail tread along the steel rail tread to clad the alloy powder so as to form an alloy zone; the planar inductive heater moves together with the welding gun to heat the steel rail tread; the moving speed of the planar inductive heater is the same as that of the welding gun. The position of the planar inductive heater is adjustable in the transverse direction of the steel rail tread, and the alloy powder can be clad on the contact point of a wheel rail, so that the train wheels and the rail can be in contact conduction and favorable shunting of the track circuit is guaranteed.

Description

technical field [0001] The invention relates to the fields of metal material high-carbon steel surface cladding and railway track circuit signal control, in particular to a method for solving poor shunting by heating cladding alloys on 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, special lines, and crossing lines, the rail surface is severely oxidized and rusted. Non-conductive, indicating that the track circuit has lost the function of checking the track section occupancy status. This phenomenon is called bad track circuit shunting, commonly known as "white light belt" or "undead". [0003] In the bad section of the railway track circuit, induction heating and plasma cladding are used to clad a layer of...

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Problems solved by technology

[0008] Heating zone 1 and heating zone 2 constitute a three-dimensional structure. During specific heating, this structure makes the heating part of the rail only located on the outside of the rail tread and cannot move along the center of the rail tread and the inside of the rail tread, causing the alloy powder to only be clad On the outer side of the rail tread, with the long-term rolling of the wheels, the alloy strip after cladding will accelerate wear. When the relative height between the alloy strip and the rail tread is zero, if the alloy strip is only located on the outer side of the rail tread, it is possible that the wheel will contact Not reaching the alloy strip, resulting in poor shunting; in addition, the heating surface is two sides, the heating is more dispersed, and energy is wasted

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