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Rail welding method

A welding method and rail technology, applied in the direction of rails, welding equipment, welding/welding/cutting items, etc., can solve the problems of not realizing the welding of different steel types of rails, and achieve the effect of improving the use level and the overall level

Active Publication Date: 2016-03-09
铁科金化检测中心有限公司 +3
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AI Technical Summary

Problems solved by technology

[0003] In recent years, the base welding technology of my country's railway rails has made great progress. Welding rails of the same steel type at the rail welding base, the welding quality is very stable, and the rail breaking rate is The following; but the welding between different steel rails has not yet been realized in the welding rail base

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Embodiment Construction

[0027] A rail welding method provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] As shown in Table 1, according to a welding method of the present invention, the method uses the same set of parameters to realize the welding of rails of different steel types.

[0029]

[0030] Table 1

[0031] Different steel rails have different mechanical properties and physical and chemical constants due to their different components. Welding two different rails together is more sensitive to the variable ratio of voltage, current, heating time and upsetting amount. The invention realizes mixed welding of three different steel rails of U71Mn, U75V and U76CrRe and mixed welding of U75V steel rails in different delivery states through common welding process parameters.

[0032] This welding method according to the present invention further comprises the following aspects:

[0033] 1. Use the sam...

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PUM

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Abstract

The invention discloses a rail welding method which is characterized in that the method can achieve the purpose of laying rails of corresponding strength grade in different sections on the line by carrying out mixed welding on rails with marks of U71Mn, U75V and U76CrRe and rails with mark of U75V in different delivery states. According to the invention, rails in different steel types or different delivery states are welded together by utilizing a fixed flash welding manner, and then truck loading and laying of long rails can be carried out according to the conditions of the railway line. By adopting the rail welding method, rails of corresponding strength grade can be laid in different sections on the line, a welding joint is a high-strength flash welding joint, and the overall level of the seamless line of the railway can be improved by improving the use level of the rails.

Description

technical field [0001] The invention relates to the field of railway laying, in particular to a rail welding method. Background technique [0002] At present, the use level of steel rails in various domestic railway bureaus is generally not high. The main performance is that the same rails are laid on straight lines, curves and slopes. The disadvantage is that the straight line section wears less, while the curve or slope section wears or damages more, and the equal life matching of the rail is not realized. Although some railway bureaus have laid wear-resistant steel rails in curved sections, they use aluminothermic welding at the intersection of curves and straight lines. When using aluminothermic welding to weld rails of different steel types or different delivery states, the rail breaking rate And the serious injury rate is higher than the aluminothermic welding of the same kind of rail. [0003] In recent years, the base welding technology of my country's railway rai...

Claims

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Application Information

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IPC IPC(8): B23K11/04B23K101/26B23K103/04
CPCB23K11/04B23K2101/26B23K2103/04
Inventor 高文会田甜代韬胡玉堂倪峥嵘
Owner 铁科金化检测中心有限公司
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