Universal contact for nondestructive testing magnetic particle flaw detector

Abstract

The invention relates to a universal contact for a nondestructive testing magnetic particle flaw detector. The universal contact comprises an upper layer (1), a middle layer (2) and a lower layer (3),which are connected in sequence. The upper layer (1) and the lower layer (3) are respectively a magnetic component in a sheet laminate structure; and the middle layer (2) is a solid structure. The upper layer (1) and the lower layer (3) respectively comprise a movable part (4) and a connecting part (5). One end of the connecting part (5) is fixedly connected with the middle layer (2); and the sheet structure at the other end of the connecting part (5) and the sheet structure of the movable part (4) overlap with each other and are in rotary connection through a rotation shaft (6). Compared with the prior art, the universal contact can greatly improve the situation of poor contact with the detection surface in the detection process, improves magnetic particle testing sensitivity, enlarges magnetic particle flaw detection applicable scene, and makes detection result more accurate and reliable.

Description

technical field [0001] The invention relates to a magnetic particle flaw detector, in particular to a universal contact for a nondestructive detection magnetic particle flaw detector. Background technique [0002] Magnetic particle testing is one of the most important methods of surface testing in conventional non-destructive testing. It mainly detects surface and near-surface defects of ferromagnetic materials, and plays an important role in the non-destructive testing of steel structures, special equipment and various metal parts of power plants. . When detecting various complex metal parts, some detection positions are limited. During the detection process of the yoke method magnetic particle flaw detection, except for workpieces with relatively flat surfaces such as large containers and pipes, there are limited or unsatisfactory contacts. In the process of magnetic particle inspection using the magnetic yoke contact method, the contact between the contact and the compon...

AI Technical Summary

Problems solved by technology

When detecting various complex metal parts, some detection positions are limited. During the detection process of the magnetic particle flaw detection method of the magnetic yoke method, except for workpieces with relatively flat surfaces such as large containers and pipes, there are cases where contact is limited or unsatisfactory.

In the process of magnetic particle inspection using the magnetic yoke contact method, the contact between the contact and the component directly affects the detection sensitivity. Therefore, in the detection process, the detection sensitivity is insufficient. It needs to be verified with the sensitivity test piece. The effect is still not satisfactory

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