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A kind of rail arc cladding alloy method

A technology for cladding alloys and rails, applied in arc welding equipment, metal processing equipment, metal material coating technology, etc., can solve the problems of limited use, heavy equipment, high cost, and ensure wear resistance and corrosion resistance properties, improved corrosion resistance and wear resistance, improved wear resistance and corrosion resistance

Inactive Publication Date: 2019-11-08
CHENGDU ZHONGGUI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cladding site construction is powered by a generator. 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
In northern my country and high-altitude areas, the temperature in winter is low, and the existing methods of cladding alloys are limited.

Method used

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  • A kind of rail arc cladding alloy method
  • A kind of rail arc cladding alloy method
  • A kind of rail arc cladding alloy method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A steel rail arc cladding alloy method, comprising the following steps:

[0058] a. Place the rail cladding machine on the rail, the arc welding torch 1 on the rail cladding machine moves at a constant speed with the first moving trolley 2, and the arc welding torch 1 cladding alloy on the rail head tread surface to be clad;

[0059] b. The alloy strip formed after alloy cladding is located on the inner side of the center of the rail head tread, the width of the alloy strip is 4mm, and the thickness of the heat-affected zone of the rail is controlled at 0.6mm;

[0060] c. Arrange the induction heater 3 on the rail cladding machine above the alloy strip after cladding; after the alloy strip after cladding rests for 2 seconds, start to move the induction heater 3 at a constant speed along the length direction of the rail to heat the alloy strip , based on the fact that the structure of the heat-affected zone of the rail after heating is tempered sorbite or tempered sorbit...

Embodiment 2

[0064] A steel rail arc cladding alloy method, comprising the following steps:

[0065] a. Place the rail cladding machine on the rail, the arc welding torch 1 on the rail cladding machine moves at a constant speed with the first moving trolley 2, and the arc welding torch 1 cladding alloy on the rail head tread surface to be clad;

[0066] b. The alloy strip formed after alloy cladding is located on the inner side of the center of the rail head tread, the width of the alloy strip is 10mm, and the thickness of the heat-affected zone of the rail is controlled at 2mm;

[0067] c. Arrange the induction heater 3 on the rail cladding machine above the alloy strip after cladding; after the alloy strip after cladding rests for 20 seconds, start to move the induction heater 3 at a constant speed along the length direction of the rail to heat the alloy strip , based on the fact that the structure of the heat-affected zone of the rail after heating is tempered sorbite or tempered sorbit...

Embodiment 3

[0070] A steel rail arc cladding alloy method, comprising the following steps:

[0071]a. Place the rail cladding machine on the rail, the arc welding torch 1 on the rail cladding machine moves at a constant speed with the first moving trolley 2, and the arc welding torch 1 cladding alloy on the rail head tread surface to be clad;

[0072] b. The alloy strip formed after alloy cladding is located on the inner side of the center of the rail head tread, the width of the alloy strip is 18mm, and the thickness of the heat-affected zone of the rail is controlled at 2.8mm;

[0073] c. Arrange the induction heater 3 on the rail cladding machine above the alloy strip after cladding; after the alloy strip after cladding rests for 35 seconds, start moving the induction heater 3 at a constant speed along the length direction of the rail to heat the alloy strip , based on the fact that the structure of the heat-affected zone of the rail after heating is tempered sorbite or tempered sorbit...

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Abstract

The invention discloses a method for coating steel rail with alloy by means of arc cladding and belongs to the field of rail cladding. The method is characterized by comprising the following steps: (a) putting a steel rail cladding machine on the steel rail, moving an arc welding gun at a constant speed, and melting alloy at the upper portion of a to-be-coated position of a tread surface of the railhead of the steel rail; (b) controlling the width of an alloy strip to be 4 mm to 30 mm, and controlling the thickness of a heat affected zone of the steel rail to be 0.6 mm to 6 mm; and (c) arranging an induction heater above the melted alloy strip, stewing the alloy strip for 2 s to 180 s and then moving the induction heater at a constant speed along the length direction of the steel rail so as to perform heating, wherein the tissues in the heat affected zone of the steel rail after heating are considered as tempered sorbite or tempered sorbite + tempered troostite, or tempered troostite.According to the method disclosed by the invention, the cooling speed of the heat affected zone in a cladding process needs not to be controlled, the volume and weight of the steel rail cladding machine can be reduced, the cladding applicability and cladding efficiency can be improved, and the performances of the tissues in the heat affected zone after the steel rail is melted on site are ensuredto meet the use requirements of the steel rail.

Description

technical field [0001] The invention relates to the technical field of rail cladding, in particular to an alloy method for arc cladding of 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 circu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C19/03C22C19/05C22C38/02C22C38/04C22C38/40C22C38/54C22C38/58B23K9/12
CPCB23K9/125C22C19/03C22C19/057C22C19/058C22C38/004C22C38/02C22C38/04C22C38/40C22C38/54C22C38/58C23C24/103
Inventor 周厚全
Owner CHENGDU ZHONGGUI TECH CO LTD
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