CN103278564B - Method for flaw detection of axle body by axle end surface ultrasonic small-angle longitudinal wave - Google Patents
Method for flaw detection of axle body by axle end surface ultrasonic small-angle longitudinal wave Download PDFInfo
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- CN103278564B CN103278564B CN201310220882.8A CN201310220882A CN103278564B CN 103278564 B CN103278564 B CN 103278564B CN 201310220882 A CN201310220882 A CN 201310220882A CN 103278564 B CN103278564 B CN 103278564B
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- end surface
- flaw detection
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 239000000523 sample Substances 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Provided is a method for flaw detection of axle body by axle end surface ultrasonic small-angle longitudinal wave. Two longitudinal wave probes are assembled in the same probe shell and placed on an axle end surface of an axle. Incidence points of main beams of the two longitudinal wave probes are located in an annular plane between the edge of the maximum radius of centre hole of the axle and the edge of a threaded hole of the axle end surface of the axle, and the edge of the threaded hole has a minimum distance to an axle centre. The main beams emitted by the two longitudinal wave probes can reach the middle position and the quarter position of the axle body of the axle through a shaft axis of the axle respectively. The axle and the two longitudinal wave probes are rotated relatively for more than one circle during the detection. The method for flaw detection of axle body by axle end surface ultrasonic small-angle longitudinal wave can avoid missing and false alarms through the ways that the two probes are assembled together and the main beams can be emitted to the specific positions of the axle by the combinational design of the angle and the installation position of probes. The method for flaw detection is simple. The ultrasonic flaw detection of the axle body of the axle can be especially achieved on line. The method can save a lot of money and has significant economic benefits.
Description
Technical field
The present invention relates to the method that the ultrasonic small angle longitudinal wave of a kind of axle end face is detected a flaw to axle body.
Background technology
To the Ultrasonic Detection of train axle axle body regio defect, adopted end face compressional wave normal probe (i.e. zero degree compressional wave normal probe) defectoscopy in the past, this method is to holoaxial based on the more weak acoustic pressure of acoustic beam spread angle, especially the large defect of axle body detects, it is very poor to the detectability of little defect, and axial end threaded hole also result in flaw detection blind area; In addition, on instrument display screen, the echo based on spread angle is very mixed and disorderly, is difficult to defect of distinguishing the true from the false, very easily reports by mistake and leak spy, and the unique advantage of existing method is that two axial ends only needs each 1 to pop one's head in.
Summary of the invention
Object of the present invention is just to provide that a kind of cost is few, detection accuracy rate is high, leak the method visited the low ultrasonic small angle longitudinal wave of axle end face of False Rate and detect a flaw to axle body.
The method that the ultrasonic small angle longitudinal wave of axle end face of the present invention is detected a flaw to axle body, two longitudinal wave probes are combined in same probing shell, and be placed on the axial end of axletree, in the Main beam center incident point of two longitudinal wave probes planar annular between maximum radius edge, axle center hole and axle center to axle end face threaded hole minimum dimension edge, the Main beam of two longitudinal wave probe transmittings arrives the positive meta of axle body and the axle body 1/4th of axletree respectively by axletree axial line, during detection, axletree and two longitudinal wave probes relatively rotate more than one week, the other end of axletree adopts the detection that uses the same method, can complete and the ultrasonic inspection of whole piece axletree is detected.
The method that the ultrasonic small angle longitudinal wave of axle end face of the present invention is detected a flaw to axle body, combined by two probes, and make each specific position of Main beam directive axletree by the composite design of head angle and installation site, avoid and fail to report the generation of wrong report phenomenon, its method of detection is easy, especially can the UT (Ultrasonic Testing) on-line checkingi of canbe used on line axletree axle body, a large amount of funds can be saved, there is larger economic benefit.
Accompanying drawing explanation
Fig. 1 is that the inventive method detects schematic diagram;
Fig. 2 is axle end face schematic diagram.
1, axle center hole, 2, axletree threaded hole, 3, axle journal, 4, anti-dust seat, 5, wheel seat, 6, axle body, 7, longitudinal wave probe, 8, axle body 1/4th, 9, the positive meta of axle body.
Embodiment
The method that the ultrasonic small angle longitudinal wave of a kind of axle end face is detected a flaw to axle body, two longitudinal wave probes 7 are combined in same probing shell, and be placed on the axial end of axletree, in the Main beam center incident point of two longitudinal wave probes 7 planar annular between maximum radius edge, axle center hole and axle center to axle end face threaded hole minimum dimension edge, in the planar annular that r and R as shown in Figure 2 surrounds, the Main beam launched of two longitudinal wave probes 7 arrives the positive meta 9 of axle body of axletree and axle body 1/4th 8 respectively by axletree axial line, during detection, axletree and two longitudinal wave probes 7 relatively rotate more than one week, complete and the UT (Ultrasonic Testing) of whole axletree is detected, the other end of axletree adopts the detection that uses the same method, the Main beam of the longitudinal wave probe 7 of both ends of the surface covers whole axle body.
Claims (1)
1. axle end face ultrasonic small angle longitudinal wave method that axle body is detected a flaw, it is characterized in that: two longitudinal wave probes (7) are combined in same probing shell, and be placed on the axial end of axletree, in the Main beam center incident point of two longitudinal wave probes (7) planar annular between maximum radius edge, axle center hole and axle center to axle end face threaded hole minimum dimension edge, the Main beam that two longitudinal wave probes (7) are launched arrives the positive meta of axle body (9) and the axle body 1/4th (8) of axletree respectively by axletree axial line, during detection, axletree and two longitudinal wave probes (7) relatively rotate more than one week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220882.8A CN103278564B (en) | 2013-06-06 | 2013-06-06 | Method for flaw detection of axle body by axle end surface ultrasonic small-angle longitudinal wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220882.8A CN103278564B (en) | 2013-06-06 | 2013-06-06 | Method for flaw detection of axle body by axle end surface ultrasonic small-angle longitudinal wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103278564A CN103278564A (en) | 2013-09-04 |
| CN103278564B true CN103278564B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310220882.8A Expired - Fee Related CN103278564B (en) | 2013-06-06 | 2013-06-06 | Method for flaw detection of axle body by axle end surface ultrasonic small-angle longitudinal wave |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067710A (en) * | 2015-07-20 | 2015-11-18 | 常州市常超电子研究所有限公司 | Train shaft unloading groove probe |
| CN108120766A (en) * | 2018-01-23 | 2018-06-05 | 吴来政 | The method and device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body |
| CN114200013A (en) * | 2020-09-17 | 2022-03-18 | 云南缔邦检测有限公司 | A phased array detection method for wheel-to-wheel axle in catenary operation |
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Inventor after: Wu Laizheng Inventor after: Wang Jun Inventor after: Wu Jiewen Inventor after: Wu Chengjun Inventor after: Wu Qiujin Inventor after: Ai Maoxing Inventor after: Wang Hongtao Inventor after: Chen Jinlin Inventor after: Yao Xiaohong Inventor after: Shi Shengping Inventor after: Lin Xinhua Inventor after: Wang Yongbin Inventor after: Liu Duhui Inventor after: Song Haofei Inventor after: Lang Shunming Inventor after: Qiu Hongbing Inventor after: Li Yang Inventor after: Wang Wei Inventor after: Wan Shengyun Inventor before: Wu Laizheng Inventor before: Wang Jun Inventor before: Wang Yongbin Inventor before: Liu Duhui Inventor before: Song Haofei Inventor before: Lang Shunming Inventor before: Qiu Hongbing Inventor before: Li Yang Inventor before: Wang Wei Inventor before: Wan Shengyun |
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