Magnetic frequency-variation flaw detection apparatus for black metal wire material

A flaw detection device, ferrous metal technology, applied in the direction of material magnetic variables, etc., can solve the problem that the wire detection can not move forward

Inactive Publication Date: 2007-01-10
JINFENG ELECTRONICS ENG YICHANGCITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Five methods, the detection of wire ro

Method used

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  • Magnetic frequency-variation flaw detection apparatus for black metal wire material
  • Magnetic frequency-variation flaw detection apparatus for black metal wire material
  • Magnetic frequency-variation flaw detection apparatus for black metal wire material

Examples

Experimental program
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Embodiment Construction

[0013] Put the material to be tested into the magnetic induction coil 2 of the probe, and locate any segment without moving it. A small segment of it touches the frequency conversion adjustment circuit and participates in frequency conversion adjustment. This segment of material is also called "calibration segment." Frequency regulator 24 There are 10,000, 1,000, 100, 10, 1, and 10 decimals in six disks and ten files; the thousand file is set at 9, and the rest are all set at 0. After the power is turned on, the alarm will beep, and it will return from 9 according to the method of high to low. To 1, from thousands to ones, adjust the frequency regulator knob, the adjustment speed is moderate, subject to the stability of the LCD digital display 14, the tens of thousands does not need to be adjusted, first adjust the thousands of gear knob, the alarm stop gear is the definite gear According to this method, adjust the hundreds, tens, and ones. After the adjustment, move the probe ...

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PUM

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Abstract

A ferrous metal wire rob magnetic variation magnetic frequency conversion inspect device can detect material surface crack, interior seam, identifying whether tested material being same furnace number material, whether material quality concordance, and making on-line control to raw material. Its principle is the detected material penetrating in detection coil, combining with said device frequency conversion conditioned circuit to make co-regulation, adopting tested material self comparing with itself to raise detection accuracy. In detection, if it detects material having crack, slag inclusion, bubble etc shortage or quality variation, its reluctance enlarging, variation, and alternating magnetic field frequency changed, frequency change detected by said device, combined with other circuit to reach the detection target. Said invention adopts box type shielding and hand held probe structure, and consisting of magnetic force induction coil, LC oscillator, frequency conversion conditioned circuit, photoelectricity coupling, voltage amplification, dc comparing, acoustic alarm, liquid crystal digital display, and connected with sequential computer to reach on-line control.

Description

technical field [0001] The invention relates to a ferrous metal [ferromagnetic material] wire [the cross-sectional area of ​​any section has the same geometric size] magnetic frequency conversion electronics, and a non-destructive testing flaw detection device at normal temperature. It can detect the cracks on the surface of the material and detect the internal scars of the material at the same time; it can identify whether the material is the same furnace number material and whether the quality of the material is consistent; it can control the raw material online. It is suitable for metallurgy, machinery manufacturing, military industry, chemical industry, construction, building materials and other industries. Background technique [0002] At present, there are five types of non-destructive testing methods in the world, namely ray, ultrasonic, eddy current, magnetic particle and penetrant testing. The present invention is different from any kind of detection means, and has...

Claims

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Application Information

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IPC IPC(8): G01N27/82
Inventor 侯体坤余兴国
Owner JINFENG ELECTRONICS ENG YICHANGCITY
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