Portable electromagnetic ultrasonic crack detector for locomotive wheel pair tread

Abstract

This invention relates to portable automobile pedal electro-magnetic hypersonic wound detecting device, wherein, the host machine hypersonic frequency signal generator generates hypersonic frequency signals through logic control unit power amplifier; the electro-magnetic hypersonic energy exchanger generates hypersonic surface wave near surface to send along surface and receive the feedback hypersonic surface through electro-magnetic wave and then sending it to the programmable amplifier into digital signals then through logic control unit to directly send to the memory or through digital process unit to the memory.

Description

Technical field [0001] The invention relates to an ultrasonic flaw detection device, in particular to an electromagnetic ultrasonic flaw detector for wheel set tread defects of locomotives and vehicles. Background technique [0002] In recent years, with the rapid development of my country's national economy, the running speed of trains has increased year by year. The speed-up operation of the train puts forward higher requirements on the quality of the train. As an important part of the train, the wheelset, especially the defects such as scratches, peeling, and cracks on the surface of the tread and near the surface, are major factors that endanger driving safety. Therefore, it is necessary to detect the wheel at any time, especially to detect whether there is a defect in the wheel tread. This is an extremely important daily and recurring job. [0003] The traditional wheel set tread defect detection method mainly relies on manual detection, the detection results are hig...

AI Technical Summary

Problems solved by technology

None of them can directly detect the defects in the continuous shell layer on the surface of the wheel tread and near the surface. It needs to scan continuously along the surface in the state of disintegration of the wheel (falling wheel) to realize the continuous flaw detection of the wheel surface, and it is impossible to perform dynamic automatic continuous detection. detection

[0004] When the piezoelectric ultrasonic detector is used, it is necessary to clean the surface of the object to be tested, remove surface dirt and anti-rust paint and other pretreatments; after the test is completed, according to the relevant railway regulations, the surface must also be post-treated, such as coating anti-rust Paint, etc., the detection time is long, there are many supporting procedures, and the efficiency is low

In the detection process, in order to improve the coupling efficiency, a couplant must be used, which brings inconvenience to the field detection application

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