CN103323536B - Journal flaw detection method utilizing axle end face ultrasonic transverse wave - Google Patents
Journal flaw detection method utilizing axle end face ultrasonic transverse wave Download PDFInfo
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- CN103323536B CN103323536B CN201310220883.2A CN201310220883A CN103323536B CN 103323536 B CN103323536 B CN 103323536B CN 201310220883 A CN201310220883 A CN 201310220883A CN 103323536 B CN103323536 B CN 103323536B
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- axle
- transverse wave
- axle journal
- journal
- axletree
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Abstract
The invention relates to a journal flaw detection method utilizing axle end face ultrasonic transverse wave. According to the invention, two transverse wave probes are placed at axle end faces of the axle. Main sound beam central incidence points are positioned at a position with a distance from the axle center larger than 1/2 of a journal radius. The main sound beam emitted by one transverse wave probe penetrates an axle center line and reaches an axle journal root part A site. The main sound beam emitted by the other transverse wave probe penetrates the axle center line, reaches an axle journal main line, and is focused and reflected to an axle journal root part B site. During detection, the axle rotates relative to the two transverse wave probes by more than one turn. With the journal flaw detection method utilizing the axle end face ultrasonic transverse wave, with a transverse wave cross-testing method, the testing blind area and area with overlapped main sound beam central lines caused by the hinder of three threaded holes can be overcome. The capacity for detecting small defects such as small cracks with a size of 0.5mm is improved. Therefore, railway travelling safety is ensured, social benefit is improved, and economic benefit is indirectly improved.
Description
Technical field
The present invention relates to a kind of method that train axle end face ultrasonic shear waves is detected a flaw to axle journal position.
Background technology
To the Ultrasonic Detection of train axle axle journal regio defect, adopted axial end small angle longitudinal wave defectoscopy in the past, but, when same frequency, in steel, compressional wave wavelength is 1.94 times of shear wave wavelength, and this is greatly disadvantageous to the little defect of detection, and the railway system wishes the crackle that can detect the 0.5mm degree of depth, because existing technological means does not reach requirement, so its technological procedure have to require the crackle detecting the 1mm degree of depth.Known, reduce wavelength, when the velocity of sound is constant, it is also feasible for improving frequency, but under high frequency, " sensitivity-displacement " amplitude curve is too precipitous, very easily produces to leak and visits.Certainly, change the velocity of sound and just become unique way, but the existence of three threaded holes in axial end, make to select shear wave also impossible, because shear wave incidence point can only could arrive surveyed area by Main beam on the position that distance axis center is greater than axle journal radius more than 1/2nd, therefore district is educated in three threaded hole namely three flaw detections, and the flaw detection of compressional wave low-angle, can carry out by planar annular between threaded hole and center pit, just there is not blind area, this just gets back to Yuan Lu again and has got on.For a long time, people understand this contradiction of solution to have paid a lot of effort.
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 train axle end face ultrasonic shear waves of False Rate and detect a flaw to axle journal position.
The method that train axle end face ultrasonic shear waves of the present invention is detected a flaw to axle journal position, two shear wave probes are combined in the axial end being placed in axletree in same shell, the Main beam center incident point of two shear wave probes is positioned at and is greater than on the position of axle journal radius 1/2nd apart from axle center, wherein the Main beam of a shear wave probe transmitting arrives the axle journal root A position of axletree by axletree axial line, the axle journal bus refocusing that the Main beam that another shear wave probe is launched arrives axletree by axletree axial line reflexes to axle journal root B position, axle journal root A position and axle journal root B distance of positions axle journal root 0-60mm, during detection, axletree and two shear wave probes relatively rotate more than one week, complete and the UT (Ultrasonic Testing) at axle journal position is detected, the other end of axletree adopts the detection that uses the same method.
The method that train axle end face ultrasonic shear waves of the present invention is detected a flaw to axle journal position, adopt shear wave to intersect defectoscopy can overcome the flaw detection blind area that formed due to the obstruction of three threaded holes and have the region that Main beam center line overlap covers, reach again the ability improving and detect the little defects such as 0.5mm crackle simultaneously, more effectively ensure railway operation safety, improve social benefit and also indirectly improve economic benefit.
Accompanying drawing explanation
Fig. 1 is that the inventive method detects schematic diagram.
1, axle journal, 2, shear wave probe, 3, shear wave probe, 4, axle shaft end face, 5, axle center hole, 6, axletree threaded hole.
Embodiment
A kind of method that train axle end face ultrasonic shear waves is detected a flaw to axle journal position, two shear wave probes are placed in the axial end 4 of axletree, the Main beam center incident point of two shear wave probes is positioned at and is greater than on the position of axle journal radius 1/2nd apart from axle center, wherein the Main beam of shear wave probe 3 transmitting arrives the axle journal root A position of axletree by axletree axial line, the axle journal bus refocusing that the Main beam that another shear wave probe 2 is launched arrives axletree by axletree axial line reflexes to axle journal root B position, axle journal root A position and axle journal root B distance of positions axle journal root 0-60mm, during detection, axletree and two shear wave probes relatively rotate more than one week, complete and the UT (Ultrasonic Testing) of axletree neck position is detected.
Claims (1)
1. the method detected a flaw in axle journal position of a train axle end face ultrasonic shear waves, it is characterized in that: two shear wave probes to be combined in same shell and to be placed in the axial end (4) of axletree, the Main beam center incident point of two shear wave probes is positioned at and is greater than on the position of axle journal radius 1/2nd apart from axle center, the Main beam that wherein shear wave probe (3) is launched arrives the axle journal root A position of axletree by axletree axial line, the axle journal bus line focus that the Main beam that another shear wave probe (2) is launched arrives axletree by axletree axial line reflexes to axle journal root B position, axle journal root A position and axle journal root B distance of positions axle journal root 0-60mm, during detection, axletree and two shear wave probes relatively rotate more than one week, complete and the UT (Ultrasonic Testing) at axle journal position is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220883.2A CN103323536B (en) | 2013-06-06 | 2013-06-06 | Journal flaw detection method utilizing axle end face ultrasonic transverse wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220883.2A CN103323536B (en) | 2013-06-06 | 2013-06-06 | Journal flaw detection method utilizing axle end face ultrasonic transverse wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103323536A CN103323536A (en) | 2013-09-25 |
| CN103323536B true CN103323536B (en) | 2015-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310220883.2A Expired - Fee Related CN103323536B (en) | 2013-06-06 | 2013-06-06 | Journal flaw detection method utilizing axle end face ultrasonic transverse wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103323536B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271561A (en) * | 2017-06-27 | 2017-10-20 | 北京双河理声自动化检测技术有限公司 | A kind of B ultrasound imaging method that axle journal is detected from railroad car axle axle body |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678385B1 (en) * | 1991-06-28 | 1994-08-05 | Valdunes | METHOD AND DEVICE FOR ULTRASONIC CONTROL OF THE SURFACE CONDITION OF A BORE, ESPECIALLY THE BORE OF A RAILWAY AXLE. |
| CN101832972B (en) * | 2010-04-07 | 2012-05-23 | 南通友联数码技术开发有限公司 | Ultrasonic flaw detection method for truck wheel axles and dedicated flaw detector |
| CN201811945U (en) * | 2010-10-19 | 2011-04-27 | 北京交大创新科技中心 | Wheel axle ultrasonic automatic detection system |
| CN102749385A (en) * | 2012-07-23 | 2012-10-24 | 南车洛阳机车有限公司 | Ultrasonic flaw detection method of gear press-in section of locomotive axle |
| CN102818844B (en) * | 2012-07-25 | 2014-11-26 | 中国石油集团渤海石油装备制造有限公司 | Transverse wave detection method for defects of spiral weld steel pipe body and flaw detection apparatus used in same |
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2013
- 2013-06-06 CN CN201310220883.2A patent/CN103323536B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN103323536A (en) | 2013-09-25 |
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Inventor after: Wu Laizheng Inventor after: Jiang Yan Inventor after: Li Teng Inventor after: Zhang Wei Inventor after: Hu Shizhou Inventor after: Yang Fang Inventor after: Wan Shengyun Inventor after: Li Hao Inventor after: Wu Jiewen Inventor after: Wang Zhebin Inventor after: Chen Jinlin Inventor after: Tu Xiaojian Inventor after: Fan Wenming Inventor after: Sun Yongdong Inventor after: Zhou Zhen Inventor after: Zeng Qiqiao Inventor before: Wu Laizheng Inventor before: Zeng Qiqiao Inventor before: Wu Jiewen Inventor before: Wang Zhebin Inventor before: Chen Jinlin Inventor before: Tu Xiaojian Inventor before: Fan Wenming Inventor before: Sun Yongdong Inventor before: Zhou Zhen |
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Free format text: CORRECT: INVENTOR; FROM: WU LAIZHENG WU JIEWEN WANG ZHEBIN CHEN JINLIN TU XIAOJIAN FAN WENMING FAN WENMING SUN YONGDONG ZHOU ZHEN CENG QIQIAO TO: WU LAIZHENG WU JIEWEN WANG ZHEBIN CHEN JINLIN TU XIAOJIAN FAN WENMING SUN YONGDONG ZHOU ZHEN CENG QIQIAO JIANG YAN LI TENG ZHANG WEI HU SHIZHOU YANG FANG WAN SHENGYUN LI HAO |
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