CN1975407A - Method for nondestructive testing iron and steel material quality and equipment thereof - Google Patents
Method for nondestructive testing iron and steel material quality and equipment thereof Download PDFInfo
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- CN1975407A CN1975407A CN 200610147400 CN200610147400A CN1975407A CN 1975407 A CN1975407 A CN 1975407A CN 200610147400 CN200610147400 CN 200610147400 CN 200610147400 A CN200610147400 A CN 200610147400A CN 1975407 A CN1975407 A CN 1975407A
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Abstract
The invention discloses a method to detect the steel quality with no damage which is to magnetize the part of the detected objects by the impressed magnetic field. After moving the magnetic field, it measures the magnetic field intensity to the magnetic points and compares to the corresponding pre-collecting parameters of every steel quality and judges the detected steel quality. Because the different quality steel has the different content of the carbon and other alloy material such as Ni, Cr, so the remanence is different after magnetizing. After filling the magnetism, the detecting device can detect the remanence strength, so it is proper for detecting the product parts and it is convenience and accuracy.
Description
Technical field
The present invention relates to Dynamic Non-Destruction Measurement, particularly a kind of method that iron and steel material quality is detected.
Background technology
Ferrous materials is because carbon content and other alloying component difference have the multiple trade mark, and Material Physics, the chemical property of the various trades mark have nothing in common with each other.At present, discriminating for unknown trade mark steel mainly is by spectral analysis, be material to be heated to vapor state with electric arc, by spectroanalysis instrument the emission spectrum of metal to be measured is analyzed, because the emission spectrum wavelength difference of different metal, by spectrum line and power thereof, detect metal components, this method troublesome poeration; Also useful in addition wheel grinding, the method for observing the spark tail shape is differentiated by rule of thumb, though simple, poor accuracy.Existing these methods all can cause damage to object to be detected, when check parts finished product, can only inspect by random samples, can not each check.
Summary of the invention
The object of the invention is to provide a kind of method of nondestructive testing iron and steel material quality, does not destroy testee and carries out analyzing and testing, uses with convenient.
The solution of the present invention is: a kind of method of nondestructive testing iron and steel material quality, be object under test to be carried out local magnetized with externally-applied magnetic field, after cancelling externally-applied magnetic field, magnetized spot is carried out magnetic field intensity to be measured, by with that gather in advance and various steel material corresponding parameter contrasts, judge the material of the iron and steel object of surveying.
The equipment of nondestructive testing iron and steel material quality comprises magnetizing apparatus and the magnetic field intensity pick-up unit of being made up of magnetic field strength transducer, amplifying circuit and gauge outfit, magnetizing apparatus is made up of oscillation step-up circuit, capacitor charging circuit, the coil that magnetizes, order is electrically connected successively, magnetic field strength transducer adopts linear hall element, the output terminal of linear hall element is connected with input amplifier, amplification circuit output end is connected with gauge outfit, the gauge outfit subscript be shown with in advance gather with the corresponding scale of various materials.
Advantage of the present invention is: because the carbon content of unlike material steel and contain other alloy material such as nickel, chromium equal size what are different, the intensity of magnetization back remanent magnetism varies in size, after magnetizing with magnetizing apparatus, by of the detection of magnetic field intensity pick-up unit to its residual magnetization, can realize Non-Destructive Testing, be suitable for the detection to Prefabricated parts, it is accurate, convenient to use.
Description of drawings
The invention will be further described with embodiment with reference to the accompanying drawings below.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is an electrical schematic diagram.
Mark among the figure: the main frame of 1 magnetic field intensity pick-up unit, 2 magnetic field strength transducers, 3 magnetizing apparatus, IC1, IC2 integrated regulator, IC3 linear hall element, IC4 operational amplifier, L coil, B step-up transformer, U gauge outfit.
Embodiment
Referring to Fig. 1, the equipment of nondestructive testing iron and steel material quality comprises magnetizing apparatus 3, magnetic field strength transducer 2, magnetic field intensity pick-up unit main frame 1, the end of magnetic field strength transducer 2 is provided with linear hall element IC3, is provided with coil L in the magnetizing apparatus 3, and coil L is the coil of an open iron core of tape shape.
Referring to Fig. 2, in magnetizing apparatus:
Integrated regulator IC1, capacitor C 1, C2 form mu balanced circuit.
Triode T and peripheral capacitor C 3, C4, C5, resistance R 1, R2, R3 thereof, and step-up transformer B forms oscillation step-up circuit.
Rectifier bridge heap D, charging resistor R4, storage capacitor C6, discharge switch AN1 form capacitor charging circuit.
Oscillation step-up circuit, capacitor charging circuit, the coil order electrical connection successively of magnetizing.
In the magnetic field intensity pick-up unit:
Integrated regulator IC2, capacitor C 7, C8 form mu balanced circuit.
Operational amplifier IC4 and peripheral resistance R 5, R6, R7, R8, R9 and zero potentiometer W thereof form amplifying circuit.
The output terminal of linear hall element is connected with input amplifier, and amplification circuit output end is connected with gauge outfit.
Diode D1, D2 play the insulating power supply effect among the figure, prevent to interfere with each other between magnetizing apparatus and the magnetic field intensity pick-up unit.
During work, the energized K switch, triode T starting of oscillation becomes alternating current with direct current, and boosts through step-up transformer B, present embodiment supply voltage 12V, the back B that boosts is output as 200V.
Alternating current after boosting charges to storage capacitor C6 through charging resistor R4 through rectifier bridge heap D rectification.
When connecting discharge switch AN1, electric energy is rapidly to coil L discharge, because voltage height and current impulse is big reaches the purpose that magnetizes to testee.
Magnetize finish after, magnetic field strength transducer is close to is magnetized the place, connect switch AN2, linear hall element IC3 senses its residual magnetization, when magnetic field intensity is strong, and IC3 output voltage height, when magnetic field intensity is weak, the IC3 output voltage is low, and this voltage signal amplifies through operational amplifier IC4, shows on gauge outfit U.
It is UGN3503 that IC3 adopts model.
Gauge outfit U subscript be shown with in advance gather with the corresponding scale of various materials, by the gauge outfit indication, can tell the material of testee.
Because the carbon content of unlike material steel and contain other alloy material such as nickel, chromium equal size what are different, the intensity of magnetization back remanent magnetism varies in size, and by the detection to its residual magnetization, has realized Non-Destructive Testing.
Claims (2)
1. the method for a nondestructive testing iron and steel material quality, it is characterized in that: object under test is carried out local magnetized with externally-applied magnetic field, after cancelling externally-applied magnetic field, magnetized spot is carried out magnetic field intensity to be measured, by with that gather in advance and various steel material corresponding parameter contrasts, judge the material of the iron and steel object of surveying.
2. utilize the described method of claim 1, the equipment of nondestructive testing iron and steel material quality comprises magnetizing apparatus and the magnetic field intensity pick-up unit of being made up of magnetic field strength transducer, amplifying circuit and gauge outfit, magnetizing apparatus is made up of oscillation step-up circuit, capacitor charging circuit, the coil that magnetizes, order is electrically connected successively, it is characterized in that: magnetic field strength transducer adopts linear hall element, the output terminal of linear hall element is connected with input amplifier, amplification circuit output end is connected with gauge outfit, the gauge outfit subscript be shown with in advance gather with the corresponding scale of various materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610147400 CN1975407A (en) | 2006-12-18 | 2006-12-18 | Method for nondestructive testing iron and steel material quality and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610147400 CN1975407A (en) | 2006-12-18 | 2006-12-18 | Method for nondestructive testing iron and steel material quality and equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1975407A true CN1975407A (en) | 2007-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200610147400 Pending CN1975407A (en) | 2006-12-18 | 2006-12-18 | Method for nondestructive testing iron and steel material quality and equipment thereof |
Country Status (1)
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| CN (1) | CN1975407A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620196B (en) * | 2009-06-08 | 2013-01-09 | 广东科学技术职业学院 | On-line nondestructive testing steel carbon-content method |
| CN106442705A (en) * | 2016-12-02 | 2017-02-22 | 山东省特种设备检验研究院 | Nondestructive testing and assessing method of stress aging embrittlement of 20G steel material |
| CN108279265A (en) * | 2017-12-29 | 2018-07-13 | 重庆励涡测控技术有限公司 | The online non-destructive testing device of strip mechanical property and its control method |
| CN110749647A (en) * | 2019-10-21 | 2020-02-04 | 杭州西奥电梯有限公司 | Sheet metal part model checking method and system based on conveying line or electronic work order |
-
2006
- 2006-12-18 CN CN 200610147400 patent/CN1975407A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620196B (en) * | 2009-06-08 | 2013-01-09 | 广东科学技术职业学院 | On-line nondestructive testing steel carbon-content method |
| CN106442705A (en) * | 2016-12-02 | 2017-02-22 | 山东省特种设备检验研究院 | Nondestructive testing and assessing method of stress aging embrittlement of 20G steel material |
| CN108279265A (en) * | 2017-12-29 | 2018-07-13 | 重庆励涡测控技术有限公司 | The online non-destructive testing device of strip mechanical property and its control method |
| CN108279265B (en) * | 2017-12-29 | 2021-12-03 | 重庆励涡测控技术有限公司 | Control method of strip steel online nondestructive testing device |
| CN110749647A (en) * | 2019-10-21 | 2020-02-04 | 杭州西奥电梯有限公司 | Sheet metal part model checking method and system based on conveying line or electronic work order |
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