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Steel rail test block

A technology of rails and test blocks, which is applied in the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, measuring devices, instruments, etc., which can solve problems such as unfavorable installation of testing equipment, vulnerability to constraints, and inconvenient rail replacement.

Inactive Publication Date: 2015-01-07
ZHUZHOU TIMES ELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: it needs a dedicated line, there are requirements for the length of the line, it is inconvenient to replace the rail, and it does not use the integration in the laboratory
Its disadvantages are: the circular rail is quite different from the actual rail, and it is easily constrained by conditions.
Since the circular rail cannot be designed to be very large, it is impossible to have such a small curve radius rail in actual use. This damage setting method has a large gap with the actual damaged object detected, and it is not conducive to the installation of detection equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] as attached figure 2 , 3 , 4, 5 and 6, the specific embodiment of the rail test block in the method of the present invention, the rail flaw detection test block is provided with bolt hole saws for simulating bolt hole cracks on the rail, for simulating rail waist position defects Any one or several kinds of damage in the rail waist transverse hole, the rail head transverse hole used to simulate the defect of the rail head part, and the rail bottom sawing used to simulate the crack of the rail bottom part form the rail test block 3 . The rail test block 3 described in the specific embodiment of the present invention can provide damage samples that are basically consistent with the dedicated line for simulating various rail damages in ultrasonic non-destructive testing, and comprehensively meet the needs of the actual situation of rail flaw detection.

[0111] The rail test block 3 includes a first test block 31, and the first test block 31 is provided with a bolt hole ...

Embodiment 2

[0180] As a preferred specific embodiment of the present invention, Embodiment 4 provides specific process parameters of the rail test block 3 . The rail test block 3 that requires ultrasonic testing includes three test blocks in total, namely the first test block 31, the second test block 32 and the third test block 33. The bolt holes shall be opened according to the standard size at the joints, and all bolt holes shall be corrugated. The rail surface of the rail is smooth, without wave wear, peeling off blocks, scratches, fish scales, welding repair layers, and uneven defects. The base metal of the rail has no obvious defects after ultrasonic testing, and there are no obvious corrosion and scars on the side and bottom of the rail. The width of the engraved groove (saw edge) of the bolt hole is 0.3-0.5mm, and the width of the engraved groove (saw edge) of the rail bottom is 0.2-0.3mm. The information mark of the test block engraved on the rail section, such as: "GTS-T1", "N...

Embodiment 3

[0216] as attached Figure 13 Shown, the specific embodiment based on the rail flaw detection dynamic test device of the inventive method comprises:

[0217] A support frame 1 for carrying a flaw detection device 5, and the flaw detection device 5 is arranged on the upper part of the support frame 1;

[0218] A sliding platform 2 is movably arranged on the bottom of the supporting frame 1 along the length direction of the supporting frame 1, and the sliding platform 2 is located below the flaw detection device 5;

[0219] The rail test block 3 arranged on the sliding platform 2, the rail test block 3 is located below the flaw detection device 5, and the rail test block 3 can be driven by the sliding platform 2 along the length direction of the support frame 1, and relative to the flaw detection device 5 Moving, the rail test block 3 is used to provide various damage simulations of the rail;

[0220] The auxiliary device 4 includes a coupling water injection device 42 , and t...

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Abstract

The invention discloses a steel rail test block which is characterized in that one or several of damages in a bolt hole kerf for stimulating bolt hole cracks, a rail waist cross hole for stimulating rail waist part defects, a rail head cross hole for stimulating rail head part defects and a rail bottom kerf for stimulating rail bottom part cracks are arranged on a steel rail to form the steel rail test block. The steel rail test block has the benefits that a steel rail damage sample basically consistent with a dedicated line can be dynamically provided for steel rail flaw detection operation; through various steel rail damages for stimulating ultrasonic non-destructive testing, the requirements for steel rail flaw detection actual situations are satisfied in all directions.

Description

technical field [0001] The invention relates to the technical field of flaw detection, in particular to a rail test block used in the dynamic test of rail flaw detection in the field of railway engineering. Background technique [0002] Ultrasonic flaw detection is the most widely used flaw detection method in the field of detection technology. The development and testing of non-destructive testing equipment are inseparable from the object to be tested. The main function of the ultrasonic rail flaw detection operation is to detect the damage of the rail itself, such as: nuclear damage at the rail head, vertical splitting, bolt hole cracks at the rail waist, crescent-shaped damage at the bottom of the rail, and various welding, fatigue, etc. resulting damage, etc. Therefore, how to provide these damage detection objects in a centralized, complete and comprehensive manner is an important part of ultrasonic nondestructive testing. There are many mold manufacturers in China th...

Claims

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Application Information

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IPC IPC(8): G01N29/30
Inventor 谭群林李红梁曹经纬夏浪王君罗江平邓亦农罗文胜廖时才
Owner ZHUZHOU TIMES ELECTRONICS TECH CO LTD
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