Ultrasonic detection analysis method for defect type of laser cladding remanufactured component

Abstract

The invention relates to an ultrasonic detection analysis method for the defect type of a laser cladding remanufactured component. The ultrasonic detection analysis method comprises the following steps: putting an ultrasonic longitudinal wave probe on the surface of the laser cladding remanufactured component, and setting the gain parameter of a sampling system; moving the probe on the surface of the component; collecting scanned defect echo signals, transmitting the scanned defect echo signals into a signal analysis system, changing a straight longitudinal wave probe into a small-angle longitudinal wave probe, moving the probe on the surface of the component, collecting the scanned defect echo signals again, and transmitting the scanned defect echo signals into the signal analysis system; changing the small-angle longitudinal wave probe again, collecting the scanned defect echo signals, and transmitting the scanned defect echo signals into the signal analysis system; utilizing the signal analysis system to carry out quick treatment of Fourier (fft) transform on collected defect signals in three times respectively to obtain the frequency spectrum analysis chart of the defect echo signals in three detection manners; distinguishing the type of the defects by observing the shapes of defect echo frequency spectrums and the compact degree of association with ultrasonic detection direction.

Description

technical field [0001] The invention relates to the field of measurement, in particular to a method for detecting internal defects of laser cladding remanufactured parts based on ultrasonic longitudinal waves and analyzing the type of defects. Background technique [0002] At present, every year in our country, a large number of scrap steel parts are recycled as scrap steel at the material level, resulting in the waste of resources and energy and the pollution of the environment. Remanufacturing takes high quality, high efficiency, energy saving, material saving, and environmental protection as the main goals, and is guided by the whole life cycle, so that the negative impact of waste products on the environment is minimized and the utilization rate of resources is the highest. Reach the best performance requirements. It is of great significance to energy saving, material saving, environmental protection and promoting the coordinated development of social economy and enviro...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the limitations of the existing ultrasonic detection defect type analysis method, which is heavily dependent on the experience and technical level of the inspectors, as well as the degree of understanding of the characteristics of the specific product and the manufacturing process.

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