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Method for detecting vertical cracks of rail base triangle areas

A technology for vertical cracks and triangular areas, applied in measuring devices, material analysis using sound waves/ultrasonic waves/infrasonic waves, instruments, etc., can solve the problem that vertical cracks in the triangular area of ​​the rail bottom cannot be found, improve the inspection ability of flaw detection, reduce Rail breakage accidents and the effect of ensuring railway safety

Inactive Publication Date: 2012-10-31
朱彤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the above deficiencies, the present invention provides a method for detecting vertical cracks in the triangular area of ​​the rail bottom, which solves the problem that the vertical cracks in the triangular area of ​​the rail bottom cannot be found

Method used

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  • Method for detecting vertical cracks of rail base triangle areas
  • Method for detecting vertical cracks of rail base triangle areas
  • Method for detecting vertical cracks of rail base triangle areas

Examples

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Embodiment 1

[0023] Embodiment 1. A method for detecting vertical cracks in the triangular area at the bottom of the rail, comprising the following three steps:

[0024] The first step is to install a tandem probe including 2 to 6 wafers on the rail flaw detector. The angle of these wafers can be selected from 37° to 45°

[0025] The second step is to use tandem probes to detect flaws on the on-site rails; figure 1 As shown, there is a vertical crack (2) in the bottom of the rail (1), and the current technology cannot receive the reflected sound waves, and the flaw detection vehicle works as follows: figure 2 As shown, the single chip (4) of the flaw detection vehicle produces radiation waves (3), and the radiation waves (3) hit the vertical cracks (2) at the bottom of the rail to generate reflection waves (5). According to the law of reflection, the reflected waves (5) has been reflected to the rear of the single wafer (4).

[0026] By adopting the present invention, the tandem wafer ...

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Abstract

The invention discloses a method for detecting vertical cracks of rail base triangle areas and relates to a flaw detection method for steel rail bases. A tandem probe on a steel rail flaw detector is used for scanning rail bases, reflected wave generated by vertical cracks can be received while no or a little collar or base metal wave can be received, so that the vertical cracks of the rail base triangle areas can be caught, flaw detection capacity is improved, and accident of steel rail breakage is reduced effectively. The tandem probe is provided with a plurality of chips which are preferably 2-6, and the reflected waves generated by the vertical cracks is recorded in a whole recorder of a steel rail flaw detector for browsing and playback. The method has the advantages that by the aid of the tandem probe, the vertical cracks of the rail base triangle areas can be detected, complete detection to the steel rails can be realized, all flaws of the steel rails can be searched, flaw detection capacity is improved, breakage accidents of the steel rails are reduced, and transport tasks of railways can be guaranteed to complete on time safely.

Description

technical field [0001] The invention relates to a detection method for flaw detection of rail bottoms. Background technique [0002] With the increasing application of seamless steel rails on railways, coupled with the heavy load of domestic railways, the wear of steel rails has been accelerated, especially on lines where passengers and freight are mixed. It is impossible to meet the requirements of various speeds due to the ultra-high height, which leads to serious side wear of the rail on the curve, resulting in frequent breakage of the welding rod or the female part of the rail, and the possible areas where the welding rod or female part is broken are all over the various parts of the rail, including The rail head, the rail waist and the rail bottom, among them, the longitudinal crack of the weld seam or the female pipe in the triangular area of ​​the rail bottom is one of the major reasons for the fracture of the weld seam or the female pipe, such as figure 1 As shown. ...

Claims

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Application Information

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IPC IPC(8): G01N29/24
Inventor 朱彤
Owner 朱彤