CN106645381A - Method and device for rapidly detecting steel part net carbide structure - Google Patents
Method and device for rapidly detecting steel part net carbide structure Download PDFInfo
- Publication number
- CN106645381A CN106645381A CN201611124474.2A CN201611124474A CN106645381A CN 106645381 A CN106645381 A CN 106645381A CN 201611124474 A CN201611124474 A CN 201611124474A CN 106645381 A CN106645381 A CN 106645381A
- Authority
- CN
- China
- Prior art keywords
- current
- iron core
- magnetic circuit
- sample
- net carbide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a method and a device for rapidly detecting a steel part net carbide structure. The principle of electromagnetic induction is ingeniously used, a complete loop is formed between a magnetic circuit iron core and a test sample, a magnetic field generated by a transmitting coil passes the magnetic circuit iron core and a part surface and then generates induction current through a receiving coil by the aid of alternating current with specific electric potential, current and frequency, the induction current is amplified and then displayed by a header, a steel part sample with the net carbide structure can be conveniently and rapidly detected by comparing the induction current with standard electric potential, complicated equipment is omitted in the mode, a steel part cannot be damaged, and the sample can be detected on a production site. The method and the device play an important role in improving product quality and production efficiency, and are simple, easy, low in cost and good in use effect.
Description
Technical field
The present invention relates to the method and dress of detection technique field, especially a kind of quick detection steel part net carbide tissue
Put.
Background technology
It is well known that ferrous materials are widely used among various industrial products, the wherein higher tool steel of phosphorus content
It is one of indispensable use kind, but because tool steel carbon content is higher, Technology for Heating Processing did not easily go out in matrix at that time
Now obvious net carbide organizes (as shown in Figure 2), and the performance and service life of the tissue severe exacerbation material, are skills
Forbid the unqualified tissue for occurring in art standard.Therefore, quickly and easily detect that the tissue of the net carbide in steel part is aligned
Technology for Heating Processing is really formulated, the production efficiency of the quality and product that improve steel part all has highly important practical significance.
The content of the invention
The purpose of the present invention is：A kind of method and device of quick detection steel part net carbide tissue is provided, it can be fast
Whether the detection steel piece surface of speed is containing net carbide tissue, and method is simple, with low cost, to overcome prior art not
Foot.
What the present invention was realized in：The method of quick detection steel part net carbide tissue, comprises the steps：
1) by one complete loop of one piece of standard specimen without net carbide 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 net carbide to organize, if measurement electric current I2Less than normalized current I1, then the detection of sample to be tested is illustrated
There is net carbide tissue in surface；
Step 1) and step 2) described in transmitting coil be powered electric current be alternating current, its potential be 8-12V, electric current
Size is 1-1.5A, and its frequency is 2500-3000HZ.
The device of quick detection steel part net carbide tissue, 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；It is wound with the opposite side of magnetic circuit iron core and connects
Take-up circle, 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 net carbide tissue, the alternating magnetic field that transmitting coil is produced leads to
Because its net carbide 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
Stream makes 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, by this
Induced-current is shown after amplifying with gauge outfit, by contrasting with standard electrode potential, you can conveniently and efficiently detect containing netted
The steel part sample of carbide tissue, such mode can be damaged without using complicated equipment to steel part,
Production scene can be detected, be played an important role to improve product quality and production efficiency.Simple, cost of the invention
Cheap, using effect is good.
Description of the drawings
Accompanying drawing 1 is structural representation of the invention；
Accompanying drawing 2 is organized for the net carbide of steel part.
Specific embodiment
Embodiments of the invention：The method of quick detection steel part net carbide tissue, comprises the steps：
1) by one complete loop of one piece of standard specimen without net carbide 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 net carbide to organize, if measurement electric current I2Less than normalized current I1, then the detection of sample to be tested is illustrated
There is net carbide 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 10V, electric current are big
It is little for 1.5A, its frequency is 3000HZ.
The device of quick detection steel part net carbide tissue, including magnetic circuit iron core 1, described magnetic circuit iron core 1 is U-shaped
Shape structure, in the side of magnetic circuit iron core 1 transmitting coil 2 is wound with, and transmitting coil 2 is connected with variable frequency power source 3；In magnetic circuit iron core 1
Opposite side is wound with receiving coil 4, and receiving coil 4 is connected by AC amplifier 5 with gauge outfit 6；Transmitting coil 2 and receiving coil 4
The number of turn it 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, the W to the production in 2015 of southwestern tools factory18Cr4V lathe tools are detected.
Inventor from January, 2015-December, from the W that the same batch of every month is produced18Cr4V lathe tools are one group, altogether
12 groups are sampled, per group samples 5.Detected using said method, the normalized current I for obtaining first1For 0.98A, and to sample
In the testing result of product, the measurement electric current I of all samples in addition to June and October2With normalized current I1Difference is less than
3%；But, in the sample detection result in June and October, the detection electric current I of June sample2Size be respectively 0.68A,
0.70A, 0.69A, 0.68A and 0.71A, the detection electric current I of October sample2Size be respectively 0.64A, 0.62A, 0.63A,
The detection electric current I of 0.64A and 0.61A, June and October all samples2Be above standard electric current I1More than 15%, then by all inspections
Test sample product detect, as a result find that the sample in addition to June and October is entirely absent net carbide group through electron-microscope scanning
Knit, and there is carbo-nitriding desmachyme with 10 samples in October in June, this is completely the same with the test result of the present invention.
Claims (4)
1. a kind of method that quick detection steel part net carbide is organized, it is characterised in that：Comprise the steps：
1) one piece of standard specimen without net carbide 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 net carbide to organize, if measurement electric current I2Less than normalized current I1, then the detection surface of sample to be tested is illustrated
There is net carbide tissue；
Step 1) and step 2) described in transmitting coil be powered electric current be alternating current, its potential be 8-12V, size of current
For 1-1.5A, its frequency is 2500-3000HZ.
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 |
|---|---|---|---|
| CN201611124474.2A CN106645381A (en) | 2016-12-08 | 2016-12-08 | Method and device for rapidly detecting steel part net carbide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124474.2A CN106645381A (en) | 2016-12-08 | 2016-12-08 | Method and device for rapidly detecting steel part net carbide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106645381A true CN106645381A (en) | 2017-05-10 |
Family
ID=58824006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611124474.2A Pending CN106645381A (en) | 2016-12-08 | 2016-12-08 | Method and device for rapidly detecting steel part net carbide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106645381A (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 CN201611124474.2A patent/CN106645381A/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》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5522699B2 (en) | Nondestructive inspection apparatus and nondestructive inspection method using pulse magnetism | |
| CN105823797A (en) | Inductive thermal image nondestructive testing device based on commensal type magnet yoke coil | |
| CN105717191A (en) | Detection method and device for magnetic Barkhausen noise signal and magnetic parameters | |
| CN108802638A (en) | Nanocrystalline high frequency property detection device and measurement method under a kind of consideration stress | |
| CN205103388U (en) | Magnetically soft material magnetism capability test device | |
| JP2007078500A (en) | Method and apparatus for measuring critical current density of superconductive film | |
| CN205538817U (en) | Detection apparatus for magnetism barkhausen noise signal and magnetism parameter | |
| CN106645381A (en) | Method and device for rapidly detecting steel part net carbide structure | |
| CN205280658U (en) | Eddy current probe | |
| CN202471647U (en) | Nondestructive detector for detecting depth of carburized layers of iron and steel pieces | |
| CN108535670A (en) | A kind of spatial high-frequency rotary magnetic characteristic measuring system and measurement method | |
| CN106442709B (en) | Device and method for detecting welding spots | |
| Prabhu Gaunkar et al. | Optimization of sensor design for Barkhausen noise measurement using finite element analysis | |
| JPWO2006059497A1 (en) | Method and device for measuring critical current density of superconductor | |
| JP4175181B2 (en) | Magnetic flux leakage flaw detector | |
| CN206772896U (en) | The device of quick detection steel part net carbide tissue | |
| CN102841130A (en) | Apparatus and method for detecting internal and external crack defects of metal material | |
| CN106404894B (en) | Magnetic powder inspection machine for special-shaped parts | |
| CN104792859B (en) | A kind of local micro- magnetization detection means of yoke formula suitable for line style defect | |
| CN114428109A (en) | Test piece for magnetic powder detection by coil method and detection method of test piece | |
| CN106525956A (en) | Method and device for quickly detecting network carbide structure on surface carburized layer of steel part | |
| CN104777216B (en) | A kind of local micro- magnetization detection means of yoke formula suitable for point-type defect | |
| JPH0353155A (en) | Detector for internal defect or damage for steel material | |
| CN106596708A (en) | Method and device for quickly detecting carbonitriding network structure on surface of steel part | |
| CN106596707A (en) | Method and apparatus for rapidly detecting vein network structure of nitrided layer on surface of steel part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |