Positioning ultrasonic testing device and positioning ultrasonic testing method for plane welding component

Abstract

The invention relates to a positioning ultrasonic testing device and a positioning ultrasonic testing method for a plane welding component and belongs to the field of ultrasonic testing. The structure of the device is as follows: an ultrasonic probe is connected with an ultrasonic testing module through a probe connecting line; the ultrasonic testing module is connected with an industrial computer through a PCI bus; a serial mechanical arm has a mechanical arm structure formed by the connecting rods in serial connection; the ultrasonic probe can realize the plane structure detection; an angle sensor on the serial mechanical arm is used for converting the angle change of each connecting rod into an electric signal and feeding back to a data collecting card; the electric signal is inputted to the industrial computer through a USB connecting line. The method comprises the following steps: treating a workpiece surface and scanning the workpiece surface. The invention has the advantages that the problems of complex ultrasonic scanning mechanism and large floor space can be solved; the quantitative ultrasonic testing of large-size welding component is realized; the high-precision online quantitative scanning is performed on an internal defect of the workpiece and the computer is used for fitting and forming numerical value and image.

Description

technical field [0001] The invention relates to the field of ultrasonic testing, in particular to an ultrasonic testing device and method for positioning a planar welded part based on a tandem mechanical arm. It is suitable for the detection of large-scale flat weldments. Background technique [0002] Quantitative ultrasonic testing usually uses a mechanical mechanism to drive the ultrasonic probe. By controlling the movement of the mechanical mechanism, the ultrasonic probe reaches a specific position and scans in a specific area. At each scanning point, the position information is fed back by the mechanical mechanism, the internal state of the workpiece is fed back by the ultrasonic probe, and then through computer fitting, the defect information of all scanning points inside the workpiece can be obtained. The two-dimensional surface of the workpiece often uses X-Y bidirectional motor to drive the mechanical mechanism and drive the ultrasonic probe to scan the surface of ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a positioning ultrasonic detection device and method for plane welded parts, which is suitable for the detection of large-scale plane welded parts, solves the problems of complex ultrasonic scanning mechanism and large footprint in the prior art, and realizes Quantitative ultrasonic testing of large-scale weldments, while performing high-precision online quantitative scanning of internal defects of the workpiece, and forming numerical values ​​and images through computer fitting

Images