CN87201715U - Additional magnetizer device in rotating magnetic field of intercross coil - Google Patents
Additional magnetizer device in rotating magnetic field of intercross coil Download PDFInfo
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- CN87201715U CN87201715U CN 87201715 CN87201715U CN87201715U CN 87201715 U CN87201715 U CN 87201715U CN 87201715 CN87201715 CN 87201715 CN 87201715 U CN87201715 U CN 87201715U CN 87201715 U CN87201715 U CN 87201715U
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- coil
- magnetic field
- intercross
- additional
- rotating magnetic
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Abstract
The utility model relates to an additional magnetizer device in rotating magnetic field of the intercross coil. When a connecting rod (or complicated metal parts with other shapes) carried out the automatic and semiautomatic non-destructive surface inspection and the near surface defect, a magnetizing station is provided with a special device. The utility model has the advantages that the inner part of the intercross coil is additionally provided with a magnetic conductor which can change the distribution state of the magnetic field, and accordingly, each position of the complex parts (such as the connecting rod) with the magnetizing shape can obtain uniform strength of the induction magnetic field. Therefore, the intercross coil can be used practically, and the automatic and semiautomatic non-destructive inspection of all kinds of metal parts can be realized.
Description
The cross coil rotating magnetic field is the new technology that put forward in recent years, can be used for the magnetic powder inspection of metal parts, and it is to belong to the through type Magnitizing method.In theory, it has higher detection sensitivity, and is convenient to realize automatic and semi-automatic Non-Destructive Testing.But in actual applications, owing to the influence of demagnetizing factor, put into the complex-shaped metal parts of coil, the induced field distributed pole that produces on it is inhomogeneous, does not therefore see practical application at present both at home and abroad as yet.The method of in cross coil, settling magnetic conductor that we develop, can change the Distribution of Magnetic Field in the coil, and then make that each position produces uniform magnetic induction density on the metal parts that is magnetized, can realize once magnetizing the vertical, horizontal defective at each position on the display shape complex parts surface.This device mainly is applicable to the cross coil rotating magnetic field, carries out the automatic and semi-automatic detection of metal parts.Its device is a domestic initiation, abroad is not reported.
As shown in the figure: coil I, II are the H circle, and the angle of two coils is θ, pass to ImSin ω t and ImSin(ω t-α respectively) electric current, then Distribution of Magnetic Field in coil is:
(H
2X)/((2NKI
mSinθ/2COSα/2)
2) ＋ (H
2y)/((2NKI
mCOSθ/2Sinα/2)
2) ＝1
In the formula: K is a constant, and H is a magnetic field intensity, and α is the phasing degree
Following formula is an elliptic equation, big or small major decision θ and the α of Hx and Hy.
If just can produce the three dimensions rotating magnetic field with two groups of cross coils.
The device that we adopt is: the part 2 in addition that is magnetized is put on the guide rail 4 of non-magnetizer of cross coil, (lead rule and the coil useable holder or be bolted on the excitation supply device), the leading on the rule of both sides, place in the middle of this part axial is the magnetic conductor 3 that electrician's soft iron, silicon steel sheet, mild carbon steel are shaped as half round post, elliptical cylinder-shape with the place arrangement material of bolt.When coil electricity, the space magnetic field that magnetic conductor can change in the cross coil distributes.So as to the be magnetized distribution of the induced field on the metal parts of change, make that each position has produced uniform magnetic induction density on the part, realized once magnetization shown each position on the complicated part surface in addition in length and breadth to defective.
This device can also adopt the magnetic conductor of unlike material and appropriate shape according to the different requirements of detected part to magnetic field intensity, reaches the purpose of adjusting induced field intensity.Thereby make this new technology of cross coil rotating magnetic field, in the automatic and semi-automatic Non-Destructive Testing of various metal parts, used.
Claims (1)
1, additional guide magnet apparatus in the cross coil is characterized in:
(1), additional guide magnet in the cross coil rotating magnetic field;
(2), the material of magnetic conductor is to adopt electrician's soft iron, silicon steel sheet, mild carbon steel;
(3), the shape of magnetic conductor is half-cylindrical, elliptical cylinder-shape;
(4), magnetic conductor is fixed on the guide rail of the non-magnetizer in the cross coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87201715 CN87201715U (en) | 1987-02-02 | 1987-02-02 | Additional magnetizer device in rotating magnetic field of intercross coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87201715 CN87201715U (en) | 1987-02-02 | 1987-02-02 | Additional magnetizer device in rotating magnetic field of intercross coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87201715U true CN87201715U (en) | 1988-01-20 |
Family
ID=4817991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87201715 Withdrawn CN87201715U (en) | 1987-02-02 | 1987-02-02 | Additional magnetizer device in rotating magnetic field of intercross coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87201715U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067700A (en) * | 2015-07-27 | 2015-11-18 | 洛阳轴研科技股份有限公司 | Pressing bearing magnetic particle testing method |
| CN106990164A (en) * | 2017-03-29 | 2017-07-28 | 四川大学 | A kind of steel pipe longitudinal defect magnetic leakage crack detection device based on rotary magnetization |
| CN104316595B (en) * | 2014-11-17 | 2017-09-08 | 马钢(集团)控股有限公司 | A kind of magnetization unit of wheel magnaflux |
-
1987
- 1987-02-02 CN CN 87201715 patent/CN87201715U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316595B (en) * | 2014-11-17 | 2017-09-08 | 马钢(集团)控股有限公司 | A kind of magnetization unit of wheel magnaflux |
| CN105067700A (en) * | 2015-07-27 | 2015-11-18 | 洛阳轴研科技股份有限公司 | Pressing bearing magnetic particle testing method |
| CN105067700B (en) * | 2015-07-27 | 2018-06-22 | 洛阳轴承研究所有限公司 | A kind of magnetic powder inspection method for depressing bearing |
| CN106990164A (en) * | 2017-03-29 | 2017-07-28 | 四川大学 | A kind of steel pipe longitudinal defect magnetic leakage crack detection device based on rotary magnetization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |