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Method for cladding steel rail with alloy without cooling rate control

A cladding alloy and speed control technology, which is applied in the field of rail cladding, can solve problems such as limited use, low temperature in winter, and slow construction speed, so as to improve corrosion resistance and wear resistance, and improve wear resistance and corrosion resistance performance, protection of wear resistance and corrosion resistance

Inactive Publication Date: 2018-05-08
CHENGDU ZHONGGUI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technology represented by the above-mentioned patent documents needs to control the cooling rate of the cladding heat-affected zone in the process of cladding alloys on rails, and has the following shortcomings: on-site construction is restricted by equipment conditions, construction conditions, and technical conditions, and there are heating equipment Too large, slow construction speed and low efficiency
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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  • Method for cladding steel rail with alloy without cooling rate control
  • Method for cladding steel rail with alloy without cooling rate control
  • Method for cladding steel rail with alloy without cooling rate control

Examples

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Effect test

Embodiment 1

[0058] A steel rail cladding alloy method without cooling rate control, comprising the following steps:

[0059] a. Place the rail cladding machine on the rail, the plasma welding torch 10 on the rail cladding machine moves at a constant speed with the first mobile trolley 1, and the plasma welding torch 10 cladding alloy above the rail head tread surface to be clad;

[0060] 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 0.3mm;

[0061]c. Arrange the flame head 20 on the rail cladding machine above the alloy strip after cladding; use the mixed gas formed by liquefied gas and oxygen as the heating gas source, and mix the liquefied gas and oxygen directly on the flame head 20; cladding After the final alloy strip is left to stand for 2 seconds, start to move the flame head 20 at a constant speed along th...

Embodiment 2

[0065] A steel rail cladding alloy method without cooling rate control, comprising the following steps:

[0066] a. Place the rail cladding machine on the rail, the plasma welding torch 10 on the rail cladding machine moves at a constant speed with the first mobile trolley 1, and the plasma welding torch 10 cladding alloy above the rail head tread surface to be clad;

[0067] 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 1mm;

[0068] c. Arrange the flame head 20 on the rail cladding machine above the alloy strip after cladding; use the mixed gas formed by liquefied gas and oxygen as the heating gas source, and mix the liquefied gas and oxygen directly on the flame head 20; cladding After the final alloy strip is left to stand for 20 seconds, start to move the flame head 20 at a constant speed along t...

Embodiment 3

[0071] A steel rail cladding alloy method without cooling rate control, comprising the following steps:

[0072] a. Place the rail cladding machine on the rail, the plasma welding torch 10 on the rail cladding machine moves at a constant speed with the first mobile trolley 1, and the plasma welding torch 10 cladding alloy above the rail head tread surface to be clad;

[0073] 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 15mm, and the thickness of the heat-affected zone of the rail is controlled at 1.5mm;

[0074] c. Arrange the flame head 20 on the rail cladding machine above the alloy strip after cladding; use the mixed gas formed by liquefied gas and oxygen as the heating gas source, and mix the liquefied gas and oxygen directly on the flame head 20; cladding After the final alloy strip is left to stand for 40 seconds, start to move the flame head 20 at a constant speed along...

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Abstract

The invention discloses a method for cladding a steel rail with an alloy without cooling rate control. The method is characterized by comprising the following steps that a, a steel rail cladding machine is put on the steel rail, a plasma welding gun moves at a constant speed, and the upper portion of the to-be-cladded portion is cladded with the alloy; b, a formed alloy strip is located on the inner side of the center of the tread face of the rail head of the steel rail, the width of the alloy strip ranges from 4 mm to 40 mm, and the thickness of a heat affected zone of the steel rail is controlled to range from 0.3 mm to 30 mm; c, a flame head is arranged above the alloy strip, liquefied gas and oxygen are directly mixed on the flame head, after the alloy strip obtained after cladding issubjected to standing for 2 s to 180 s, the flame head is started to move in the X-axis direction at a constant speed to carry out heating, and the fact that the structure of the heat affected zone ofthe heated steel rail is tempered sorbite or tempered sorbite and tempered troostite or tempered troostite is taken as the standard. By means of the method, the cladding applicability and cladding efficiency can be improved, and it can be guaranteed that the mechanical performance of the structure of the heat affected zone meets steel rail use after field steel rail cladding.

Description

technical field [0001] The invention relates to the technical field of rail cladding, in particular to a rail cladding alloy method without cooling speed control. 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 ...

Claims

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Application Information

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IPC IPC(8): B23K28/02B23K31/00
CPCB23K28/02B23K31/00
Inventor 周厚全
Owner CHENGDU ZHONGGUI TECH CO LTD
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