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Device for magnetic leakage flaw detection of surface of steel pipe

A flaw detection device and magnetic flux leakage technology, which is applied in the direction of material magnetic variables, etc., can solve the problems of measurement accuracy deviation, failure to consider the cleaning treatment of the measured object, and dirt hindering the magnetic field from passing through the measured object, so as to ensure the measurement accuracy, Effects of Improving Measurement Accuracy

Inactive Publication Date: 2015-12-02
江苏建研建设工程质量安全鉴定有限公司
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Problems solved by technology

However, the utility model does not take into account the internal cleaning of the measured object, which may cause dirt to hinder the magnetic field from passing through the measured object, thereby causing a large deviation in measurement accuracy; Azimuth measurement

Method used

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  • Device for magnetic leakage flaw detection of surface of steel pipe
  • Device for magnetic leakage flaw detection of surface of steel pipe

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Embodiment Construction

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0013] see Figure 1-2 , the present invention provides a technical solution: a steel pipe surface magnetic flux leakage flaw detection device, including a base 1, a detection device 2, a loading rod 3 and a cleaning device 4, the detection device 2 is installed on the upper part of the base 1, the The loading rod 3 is installed in the middle of the base 1, and the loading rod 3 and the base 1 are flexibly connected, the cleaning device 4 is installed on the b...

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Abstract

The invention discloses a device for magnetic leakage flaw detection of the surface of a steel pipe. The device comprises a base platform, a detection device, an object carrying rod and a cleaning device, the detection device is mounted on the upper portion of the base platform, the object carrying rod is mounted in the middle of the base platform, the cleaning device is mounted at the bottom of the base platform, a permanent magnet is arranged on the detection device, a magnet A and a magnet B are mounted at the left end and the right end of the permanent magnet, a probe component is mounted between the magnet A and the magnet B and fixed in the middle of the permanent magnet, a servo motor is arranged on the left side of the cleaning device, a hairbrush rod is mounted on the servo motor, a fixing frame is mounted below the hairbrush rod, the object carrying rod is movably connected with the servo motor through a belt, and the detection device and the servo motor are in electrical connection. The device can clean a detected object to guarantee penetrating power of a magnetic field, and can rotate the detected object to guarantee the same to be detected comprehensively, and detection accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of magnetic flux leakage flaw detection devices, and in particular relates to a magnetic flux leakage flaw detection device for steel pipe surfaces. Background technique [0002] Flux leakage detection means that after the ferromagnetic material is magnetized, a leakage magnetic field is formed on the surface of the test piece due to defects on or near the surface of the test piece. People can detect defects by detecting changes in the leakage magnetic field. It is a very important non-destructive testing method. Application It is very extensive, such as steel pipe crack and corrosion detection used in construction, etc. When it is used in combination with other methods, it can provide quick and cheap evaluation of ferromagnetic material workpieces. With the advancement of technology, people pay more and more attention to detection. This can not only reduce the labor intensity of the detection work, but also...

Claims

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Application Information

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IPC IPC(8): G01N27/83
Inventor 李世宏李传殿
Owner 江苏建研建设工程质量安全鉴定有限公司
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