CN106596706A - Method and device for quickly, easily and conveniently detecting surface infiltrated layer reticular tissue of steel part - Google Patents
Method and device for quickly, easily and conveniently detecting surface infiltrated layer reticular tissue of steel part Download PDFInfo
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- CN106596706A CN106596706A CN201611124379.2A CN201611124379A CN106596706A CN 106596706 A CN106596706 A CN 106596706A CN 201611124379 A CN201611124379 A CN 201611124379A CN 106596706 A CN106596706 A CN 106596706A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
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Abstract
The invention discloses a method and device for quickly, easily and conveniently detecting surface infiltrated layer reticular tissue of a steel part. A complete loop is formed between a magnetic circuit iron core and a test sample by ingeniously utilizing the electro-magnetic induction principle, a magnetic field generated by a transmitting coil can generate an induction current after sequentially passing through the magnetic circuit iron core, the surface layer of the part and a receiving coil by adopting an alternating current with the specific potential and current magnitude and frequency, the induction current is amplified and then displayed with a header, and by comparing the induction current with a standard potential, the steel part sample containing the reticular compound tissue can be conveniently and quickly detected; in this way, complex equipment does not need to be used, no destruction can be caused to the steel part, detection can be conducted in the production field, and an important effect is achieved for improving the product quality and the production efficiency. The method and device are simple, easy to operate, low in cost and good in using effect.
Description
Technical field
The present invention relates to detection technique field, especially a kind of side of fast and convenient detection steel piece surface infiltration layer desmachyme
Method and device.
Background technology
It is well known that metal material will be in large quantities used in industrial products, and the iron and steel parts of many are under arms
During due to specific performance requirement, its surface must carry out reinforcing heat treatment, and such as gear, power transmission shaft, slide block is substantial amounts of
Metal part surface is because its needs is wear-resistant and center portion requires impact resistance, so all must carry out at carburizing or carbonitriding heat
Reason, to increase the hardened layer of piece surface, but in this Process of Chemical Thermal Treatment, because of the impact of various factors change,
Carburized layer or carbonitrided case can be usually caused substantial amounts of netted compound tissue occur, the appearance of the tissue can making to part
With serious consequence is caused, it directly results in piece surface penalty, and anti-fatigue performance is reduced, and greatly shortens the use of part
Life-span, or even it is also possible that burst fracture accident brings loss of personal property.So, for carrying out in a large number on this kind of production line
Surface heat-treatent steel-iron components, if quickly and easily being detected to it, determine whether top layer occurs having a strong impact on product
The desmachyme of quality just seems very necessary and important.
The content of the invention
The purpose of the present invention is：A kind of method and device of fast and convenient detection steel piece surface infiltration layer desmachyme is provided,
Whether it can quickly detect steel piece surface containing netted compound tissue, and method is simple, with low cost, to overcome existing skill
The deficiency of art.
What the present invention was realized in：The method of fast and convenient detection steel piece surface infiltration layer desmachyme, including following step
Suddenly：
1) by one complete loop of one piece of standard specimen without netted compound tissue and magnetic circuit iron core composition, and
One group of transmitting coil and receiving coil are respectively provided with magnetic circuit iron core, being powered to transmitting coil makes it produce magnetic field, produced
Magnetic field is then passed through receiving coil by standard specimen and magnetic circuit iron core, makes to produce a corresponding induced-current in receiving coil
I0, by induced-current I0After being amplified by AC amplifier, then reading data are directly displayed from exchange gauge outfit, as marked
Quasi- electric current I1；
2) by sample to be tested adopt step 1) method operated, obtain measurement electric current I2；
3) measurement electric current I is compared2With normalized current I1If measuring electric current I2With normalized current I1It is identical, then it represents that to be tested
The detection surface of sample does not have netted compound to organize, if measurement electric current I2Less than normalized current I1, then the detection of sample to be tested is illustrated
There is netted compound tissue in surface；
Step 1) and step 2) described in transmitting coil be powered electric current be alternating current, its potential be 6-10V, electric current
Size is 0.8-1.4A, and its frequency is 2000-2500HZ.
The device of fast and convenient detection steel piece surface infiltration layer desmachyme, including magnetic circuit iron core, described magnetic circuit iron core is
Reverse U shape structure, in the side of magnetic circuit iron core transmitting coil is wound with, and transmitting coil is connected with power supply；In the another of magnetic circuit iron core
Side is wound with receiving coil, and receiving coil is connected by AC amplifier with gauge outfit.
Described power supply is variable frequency power source.
Transmitting coil is identical with the number of turn of receiving coil.
The present invention principle be：If sample has netted compound tissue, the alternating magnetic field that transmitting coil is produced leads to
Because its netted compound organizes the obstruction to magnetic field to reduce magnetic flux when crossing the sample, and then the sense produced in receiving coil
Induced current also reduces therewith, so the induced-current I shown in gauge outfit2Again smaller than the electric current I of standard specimen1。
As a result of above-mentioned technical proposal, compared with prior art, the present invention dexterously make use of the original of electromagnetic induction
Reason, makes to constitute a complete loop between magnetic circuit iron core and sample, using certain electrical potential size of current and the alternating current of frequency
Make the magnetic field that transmitting coil is produced in the received coil generation induced-current again by magnetic circuit iron core and part top layer after, this is felt
Induced current is shown after amplifying with gauge outfit, by contrasting with standard electrode potential, you can conveniently and efficiently detect containing meshing
The steel part sample of compound tissue, such mode can be damaged to steel part without using complicated equipment, given birth to
The scene of producing can be detected, be played an important role to improve product quality and production efficiency.Simple, low cost of the invention
Honest and clean, using effect is good.
Description of the drawings
Accompanying drawing 1 is structural representation of the invention.
Specific embodiment
Embodiments of the invention：The method of fast and convenient detection steel piece surface infiltration layer desmachyme, comprises the steps：
1) by one complete loop of one piece of standard specimen without netted compound tissue and magnetic circuit iron core composition, and
One group of transmitting coil and receiving coil are respectively provided with magnetic circuit iron core, being powered to transmitting coil makes it produce magnetic field, produced
Magnetic field is then passed through receiving coil by standard specimen and magnetic circuit iron core, makes to produce a corresponding induced-current in receiving coil
I0, by induced-current I0After being amplified by AC amplifier, then reading data are directly displayed from exchange gauge outfit, as marked
Quasi- electric current I1；
2) by sample to be tested adopt step 1) method operated, obtain measurement electric current I2；
3) measurement electric current I is compared2With normalized current I1If measuring electric current I2With normalized current I1It is identical, then it represents that to be tested
The detection surface of sample does not have netted compound to organize, if measurement electric current I2Less than normalized current I1, then the detection of sample to be tested is illustrated
Deposit netted compound tissue in surface；
Step 1) and step 2) described in be alternating current to the electric current that transmitting coil is powered, its potential is that 8V, electric current are big
It is little for 1.2A, its frequency is 2300HZ.
The device of fast and convenient detection steel piece surface infiltration layer desmachyme, including magnetic circuit iron core 1, described magnetic circuit iron core 1
For reverse U shape structure, transmitting coil 2 is wound with the side of magnetic circuit iron core 1, transmitting coil 2 is connected with variable frequency power source 3；In magnetic circuit
The opposite side of iron core 1 is wound with receiving coil 4, and receiving coil 4 is connected by AC amplifier 5 with gauge outfit 6；Transmitting coil 2 with connect
The number of turn of take-up circle 4 is identical.
During use, standard specimen or sample to be tested are placed on into the position of detection zone 7, make the test surfaces 8 of sample with
The bottom good contact of magnetic circuit iron core 1.
Inventor adopts such scheme, and the automobile spiral bevel gear of vapour Guizhou auto parts machinery factory production in 2015 is carried out
Sampling checking.
Inventor is one group from January, 2015-December, the automobile spiral bevel gear produced from the same batch of every month,
12 groups are sampled altogether, and per group samples 5.Detected using said method, the normalized current I for obtaining first1For 0.86A, and
In to the testing result of sample, the measurement electric current I of all samples outside March and November is gone out2With normalized current I1Difference does not surpass
Cross 3%；But, the sample detection result in March and November, the detection electric current I of March sample2Size be respectively 0.58A,
0.61A, 0.60A, 0.58A and 0.59A, the detection electric current I of November sample2Size be respectively 0.64A, 0.64A, 0.63A,
The detection electric current I of 0.61A and 0.62A, March and November all samples2Be above standard electric current I1More than 15%, then by all inspections
Test sample product detect through electron-microscope scanning, as a result find, the sample gone out outside June and October is entirely absent desmachyme, and 3
There is carbo-nitriding desmachyme in the moon, but the net carbide in November organizes degree than March with 10 samples in November
Slightly good, this is completely the same with the test result of the present invention.
Claims (4)
1. it is a kind of it is fast and convenient detection steel piece surface infiltration layer desmachyme method, it is characterised in that：Comprise the steps：
1) one piece of standard specimen without netted compound tissue is constituted into a complete loop with magnetic circuit iron core, and in magnetic circuit
One group of transmitting coil and receiving coil are respectively provided with iron core, being powered to transmitting coil makes it produce magnetic field, produced magnetic field
Receiving coil is then passed through by standard specimen and magnetic circuit iron core, makes to produce a corresponding induced-current I in receiving coil0, will
Induced-current I0After being amplified by AC amplifier, then reading data, as standard electric are directly displayed from exchange gauge outfit
Stream I1；
2) by sample to be tested adopt step 1) method operated, obtain measurement electric current I2；
3) measurement electric current I is compared2With normalized current I1If measuring electric current I2With normalized current I1It is identical, then it represents that sample to be tested
Detection surface does not have netted compound to organize, if measurement electric current I2Less than normalized current I1, then the detection surface of sample to be tested is illustrated
There is netted compound tissue；
Step 1) and step 2) described in transmitting coil be powered electric current be alternating current, its potential be 6-10V, size of current
For 0.8-1.4A, its frequency is 2000-2500HZ.
2. a kind of device for realizing the method for claim 1, including magnetic circuit iron core (1), it is characterised in that：Described magnetic
Road iron core (1) is reverse U shape structure, and in the side of magnetic circuit iron core (1) transmitting coil (2), transmitting coil (2) and power supply are wound with
(3) connect；Receiving coil (4) is wound with the opposite side of magnetic circuit iron core (1), receiving coil (4) is by AC amplifier (5) and table
Head (6) connection.
3. device according to claim 2, it is characterised in that：Described power supply (3) is variable frequency power source.
4. device according to claim 2, it is characterised in that：Transmitting coil (2) is identical with the number of turn of receiving coil (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124379.2A CN106596706A (en) | 2016-12-08 | 2016-12-08 | Method and device for quickly, easily and conveniently detecting surface infiltrated layer reticular tissue of steel part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124379.2A CN106596706A (en) | 2016-12-08 | 2016-12-08 | Method and device for quickly, easily and conveniently detecting surface infiltrated layer reticular tissue of steel part |
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| Publication Number | Publication Date |
|---|---|
| CN106596706A true CN106596706A (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611124379.2A Pending CN106596706A (en) | 2016-12-08 | 2016-12-08 | Method and device for quickly, easily and conveniently detecting surface infiltrated layer reticular tissue of steel part |
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| CN (1) | CN106596706A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02162276A (en) * | 1989-04-28 | 1990-06-21 | Nkk Corp | Method and apparatus for magnetic measuring |
| CN102422153A (en) * | 2009-02-25 | 2012-04-18 | 住友金属工业株式会社 | Carburization detection method |
| CN102435666A (en) * | 2011-10-11 | 2012-05-02 | 南昌航空大学 | Method for evaluating stress concentration and fatigue damage based on feature permeability detection |
| CN103238064A (en) * | 2010-10-26 | 2013-08-07 | 高周波热錬株式会社 | Quenching depth measuring method and quenching depth measuring device |
-
2016
- 2016-12-08 CN CN201611124379.2A patent/CN106596706A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02162276A (en) * | 1989-04-28 | 1990-06-21 | Nkk Corp | Method and apparatus for magnetic measuring |
| CN102422153A (en) * | 2009-02-25 | 2012-04-18 | 住友金属工业株式会社 | Carburization detection method |
| CN103238064A (en) * | 2010-10-26 | 2013-08-07 | 高周波热錬株式会社 | Quenching depth measuring method and quenching depth measuring device |
| CN102435666A (en) * | 2011-10-11 | 2012-05-02 | 南昌航空大学 | Method for evaluating stress concentration and fatigue damage based on feature permeability detection |
Non-Patent Citations (2)
| Title |
|---|
| 杭亮 等: "基于ARM7的硅钢片铁损测试仪", 《机电工程》 * |
| 陈爱霞 等: "磁通量的变化对线圈中感应电流的影响", 《科技传播》 * |
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Application publication date: 20170426 |