Magnetic defect detector for discovering surface defects of metal material

Abstract

The invention relates to the technical field of flaw detection, and discloses a magnetic defect detector for discovering surface defects of a metal material. A control box is fixedly mounted on the inner wall of the top of a probe, a record display screen is fixedly mounted on the upper surface of the control box, a record memory is arranged on the inner wall of the control box, supporting legs are movably connected to the lower surface of the probe, an inner cavity is formed in each supporting leg, the inner wall of the inner cavity is fixedly connected with a pipeline, the top of the pipeline is movably connected with a firing pin, the outer wall of the firing pin is provided with a spring, the other end of the pipeline is connected with a contact head in an inserted mode, the left side of the inner wall of the inner cavity is movably connected with the spring, and the end, close to the bottom of the inner cavity, of the pipeline is provided with a fixing position. According to the magnetic defect detector for discovering the surface defects of the metal material, the striker and the spring are matched for use, the spring and the striker are very similar to an automatic ball-point pen, and the spring is pressed to generate elastic force by pulling the handle, so that the contact head is pushed out.

Description

technical field [0001] The invention relates to the technical field of flaw detection, in particular to a magnetic particle flaw detector for finding surface defects of metal materials. Background technique [0002] Magnetic particle testing is one of the conventional methods of non-destructive testing. Magnetic particle testing uses the leakage magnetic field to absorb magnetic powder to form magnetic traces for flaw detection. It has strong detection capabilities for surface and near-surface defects of ferromagnetic materials. The magnetic particle flaw detection equipment is simple and easy to operate. , rapid inspection, and high flaw detection sensitivity. [0003] It can be used to find defects on the surface or near the surface of ferromagnetic materials nickel, cobalt and their alloys, carbon steel and some alloy steels; but it is difficult to find suspicious defects such as pores, inclusions and defects hidden in the depth of the weld. position, relying solely on t...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a magnetic particle flaw detector for finding surface defects of metal materials, which has the advantages of easy replacement of the probe, photographing and storage, and solves the problems of inconvenient replacement and inability to find fine pores.

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