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Micro alternating current magnet yoke flaw detector

A flaw detector and magnetic yoke technology, which is applied in the direction of material magnetic variables to achieve the effects of easy portability, wide application and simple operation

Inactive Publication Date: 2013-05-15
SHEYANG SAIFU NDT EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Suitable for rotating magnetic field probes, yoke probes, fillet weld probes and other types of probes

Method used

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  • Micro alternating current magnet yoke flaw detector
  • Micro alternating current magnet yoke flaw detector
  • Micro alternating current magnet yoke flaw detector

Examples

Experimental program
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Effect test

Embodiment

[0017] The miniature AC yoke flaw detector of this embodiment uses a battery as the energy source, which is transmitted to the flaw detection probe after being processed by inverter, frequency conversion, and shifting. In particular, a lithium battery is used as the energy source, which is transmitted to the flaw detection probe after being processed by inverter, frequency conversion, and shifting. One charge can ensure continuous work for more than 10 hours, which makes up for the shortcomings of existing portable flaw detectors in the domestic market, and is easy to operate, convenient to carry, and widely used. Preferably, the program-controlled inverter according to this embodiment automatically adjusts the power level according to the battery voltage value, through automatic adjustment, liquid crystal digital display of working conditions and battery undervoltage alarm. The device can automatically adjust the power level according to the battery voltage value during the w...

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PUM

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Abstract

The invention relates to a portable alternating current magnet yoke flaw detector. The micro alternating current magnet yoke flaw detector provided by the invention adopts a microprocessor to realize automatic recognition of probe type, and automatic working mode adjustment according to different probes. The micro alternating current magnet yoke flaw detector provided by the invention is applicable to probes of various types, such as a rotating magnetic field probe, a magnetic yoke type probe and a fillet weld probe, realizes one machine with multiple functions, employs aviation probe to suit high-risk environment, and is a magnetic particle flaw detector with design and production in line with the requirements of special industries.

Description

technical field [0001] The invention relates to a miniature magnetic powder flaw detector, in particular to a miniature AC magnetic yoke flaw detector. Background technique [0002] At present, the magnetic particle inspection method has been widely used in various fields at home and abroad. The basic principle of magnetic particle inspection is: when the ferromagnetic material is magnetized in the magnetic field, the defects or changes in the tissue state on the surface and near the surface of the material will make the local magnetic permeability. The change occurs, that is, the reluctance increases, so that the magnetic flux in the magnetic circuit is correspondingly distorted. A part of the magnetic flux directly passes through the defect, a part of the magnetic flux bypasses the defect inside the material, and a part of the magnetic flux leaves the material surface, bypasses the defect through the air and then re-enters the defect, thus forming a leakage magnetic field ...

Claims

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Application Information

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IPC IPC(8): G01N27/84
Inventor 杨标杨建夏树新吴其军戴广飞
Owner SHEYANG SAIFU NDT EQUIP MFG
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