Double-track ultrasonic flaw detector and ultrasonic flaw detection method

Abstract

The invention provides a double-track ultrasonic flaw detector and an ultrasonic flaw detection method. The invention provides the double-track ultrasonic flaw detector. The double-track ultrasonic flaw detector comprises a flaw detection vehicle, a plurality of pairs of detection wheels are arranged at the bottom of the flaw detection vehicle, and each detection wheel comprises a plurality of straight probes and a plurality of inclined probes; the double-track ultrasonic flaw detector further comprises a detection system which is electrically connected with the detection wheels. According to the double-track ultrasonic flaw detector provided by the invention, double-track multi-wheel detection and double-wheel joint detection are utilized, the detection coverage range of a steel rail is enlarged, and a plurality of straight probes and a plurality of inclined probes are arranged in each detection wheel, can independently transmit and receive and can also work in a mutually matched manner. When the straight probes transmit and the inclined probes receive, the detection of nuclear flaws or weld cracks at 0 to 15 degrees can be realized, and the detection capability of the double-track ultrasonic flaw detector is improved.

Description

technical field [0001] The invention relates to the technical field of ultrasonic flaw detection, in particular to a dual-track ultrasonic flaw detector and an ultrasonic flaw detection method. Background technique [0002] Rails are the infrastructure of rail transport, carrying the enormous loads of trains and transferring them to sleepers, while guiding the wheels of rolling stock. With the rapid development of my country's railways, the mileage continues to increase, the speed of train operation continues to increase, and with the development of heavy-duty trains, the issue of train operation safety has become increasingly important. Rail ultrasonic flaw detectors have been widely used in rail flaw detection and defect diagnosis. However, the existing dual-track ultrasonic flaw detectors have insufficient detection capabilities in 0° damage and weld detection. Contents of the invention [0003] The invention provides a dual-track ultrasonic flaw detector and an ultras...

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Problems solved by technology

[0003] The present invention provides a dual-track ultrasonic flaw detector and an ultrasonic flaw detection method, which are used to solve the defects of insufficient detection ability of the dual-track ultrasonic flaw detector in the prior art on 0° damage and weld detection

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