CN106290554A - The oblique defect flux-leakage detection method of a kind of two-roller skew-rolling steel pipe and detection device - Google Patents
The oblique defect flux-leakage detection method of a kind of two-roller skew-rolling steel pipe and detection device Download PDFInfo
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- CN106290554A CN106290554A CN201610700602.7A CN201610700602A CN106290554A CN 106290554 A CN106290554 A CN 106290554A CN 201610700602 A CN201610700602 A CN 201610700602A CN 106290554 A CN106290554 A CN 106290554A
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- G—PHYSICS
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- 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
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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Abstract
The invention discloses the oblique defect and magnetic leakage detection device of a kind of two-roller skew-rolling steel pipe, be made up of mounting base (1), front end panel (2), rear bearing sheet (3), oblique-magnetization coil (4), oblique poly-magnetic loop device (5), fixing guide rail (6), oblique detection dish (7), probe support and adjusting apparatus (8), oblique probe (9)；Being characterized in, probe support and adjusting apparatus (8) and oblique probe (9) are installed composition surface width increasing and are twice, and oblique probe (9) wafer uses oblique angle to install；Oblique detection dish (7) changes the oblique probe (9) of special angle according to the special angle of various outer diameter specification steel pipe natural flaw；Its detection method is to be installed the oblique probe of special angle by oblique detection host platform, makes oblique head angle consistent with defect angle, so that this kind of oblique defect can effectively detect, greatly improves the power of test of defect-detecting equipment, meets on-the-spot needs.
Description
Technical field:
The present invention relates to steel pipe manufacturing industry technical field of nondestructive testing, the oblique defect of a kind of two-roller skew-rolling steel pipe
Flux-leakage detection method and detection device.
Background technology:
The detection of steel pipe vertically and horizontally rolling defect is the basic demand of steel pipe nondestructive inspection, and existing magnetic leakage detection equipment the most only has
There is detection function horizontal, longitudinal.
Roll over owing to technological reason is inevitably generated outside helical form, wire, some lamellar and rolls during steel pipe rolling
Part special shape, the oblique defects of specific type such as hole, peeling, the steel pipe produced especially with two-roller skew-rolling technique.This
If a little defect length are less compared with big, deviation steel pipe circumference or axial angle, Magnetic Flux Leakage Inspecting stray field component laterally or longitudinally is relatively
Greatly, by regulation magnetizing current, leakage field laterally, longitudinally detects and can reliably detect.But owing to this kind of defect is horizontal and vertical
Stray field component the least, laterally detect at leakage field, longitudinally may react in detection, but flaw echo height is inconspicuous,
Signal to noise ratio is inadequate；Conventional detection equipment horizontal, longitudinal cannot reliably detect.
Summary of the invention:
It is an object of the invention to overcome the deficiency of above-mentioned prior art, and a kind of oblique defect and magnetic leakage detection device of steel pipe is provided.
Another object of the present invention provides a kind of oblique defect flux-leakage detection method of steel pipe.
Present invention mainly solves the leakage field of the oblique defect of steel pipe that existing detection equipment produces for two-roller skew-rolling technique
Test problems.
The technical scheme is that the oblique defect flux-leakage detection method of a kind of two-roller skew-rolling steel pipe, it is characterised in that
Comprise the technical steps that:
A finds out the angular distribution rule of the oblique defect of steel pipe that two-roller skew-rolling technique produces；By oblique to different size steel pipe
Defect angular distribution is added up, and result uses the steel pipe of two-roller skew-rolling technique Rolling Production, because of the process characteristic of two-roller skew-rolling,
The angular distribution of its oblique defect is outer with steel pipe through relevant, Φ 159mm, Φ 168mm, Φ 194mm, tetra-kinds of external gauges of Φ 203mm
The oblique defect distribution of lattice steel pipe is 2 angles；Φ 219mm, two kinds of external diameter oblique defect distribution of specification steel pipe of Φ 245mm are at 4
Angle；Φ 299mm, two kinds of external diameter oblique defect distribution of specification steel pipe of Φ 325mm, 3 angles, are specifically shown in Table 1；
Table 1
B selects the oblique probe of customization proper angle；The defect that defect angle is consistent with head angle can be had by oblique detection
Effect detection, the effective angle scope that oblique probe detects oblique defect is ± 2 degree, therefore according to the above-mentioned various outer diameter counted
The angular distribution situation of the oblique defect of specification steel pipe, selects the oblique probe of the special angle of customization correspondence；
The oblique probe of special angle is respectively installed on the oblique detection dish of dimension by c；Various outer diameter specification steel pipe is oblique
Different oblique detection dishes need to be used to the Magnetic Flux Leakage Inspecting of defect, often overlap oblique detection dish and the oblique spy of 2 kinds of special angles is installed
Head, the Φ 203mm following external diameter oblique defect distribution of specification steel pipe needs the 1 oblique detection dish of set 2 angles；Outside more than Φ 219mm
The footpath oblique defect distribution of specification steel pipe, 3-4 angle, need to use 2 set oblique detection dish, respectively that different size steel pipe is corresponding
The oblique probe of special angle be installed on the oblique detection dish of dimension；
D changes different detection dishes according to the external diameter of Site Detection steel pipe；When scene is actually detected, according to the difference of steel pipe to be checked
External diameter, changes the oblique detection dish of the dimension having installed the oblique probe of special angle, so that it is guaranteed that oblique defect
Effectively detection, Φ 203mm following external diameter specification steel pipe only need to change 1 set oblique detection dish, Φ 219mm above external diameter specification steel pipe
2 set oblique detection dish need to be changed；Oblique detection dish is moved in and out by fixing guide rail and is replaced.
The detection device of the oblique defect flux-leakage detection method of the two-roller skew-rolling steel pipe of the present invention, it is by mounting base, front
Gripper shoe, rear bearing sheet, oblique-magnetization coil, oblique poly-magnetic loop device, fixing guide rail, oblique detection dish, probe support and
Adjusting apparatus, oblique probe form；Described front end panel, rear bearing sheet are separately fixed at both sides before and after mounting base, Gu
Determine guide rail and be located at the middle part of mounting base, inside front end panel, set oblique-magnetization coil, set oblique poly-inside rear bearing sheet
Magnetic loop device；Have circular hole, probe support and adjusting apparatus in the middle of oblique detection dish and be uniformly installed on oblique along circular hole circumference
On detection dish, oblique probe is installed in probe support and adjusting apparatus, oblique detection dish by fixing guide rails assembling in installation
Base plate；It is characterized in that, described probe support and adjusting apparatus and oblique probe are installed composition surface width increasing and are twice, oblique
Probe wafer uses oblique angle to install；Described oblique detection packing according to various outer diameter specification steel pipe natural flaw special angle more
Change the oblique probe of special angle.
The oblique defect flux-leakage detection method of a kind of two-roller skew-rolling steel pipe of the present invention and detection device, with existing skill
Art is compared has prominent substantive distinguishing features and marked improvement, and the present invention solves employing two-roller skew-rolling technique steel pipe rolling process
The part special shape of middle generation, the test problems of oblique defect of specific type, oblique detection is according to the oblique defect of steel pipe
Special angle, the oblique probe of special angle is installed by oblique detection host platform, makes oblique head angle and defect angle
Degree is consistent, so that this kind of oblique defect can effectively detect, greatly improves the power of test of defect-detecting equipment, meets scene
Need.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the detection device of the present invention.
Wherein, 1 mounting base 2 front end panel (installation side plate) 3 rear bearing sheets (installation side plate) 4 oblique-magnetization coil
5 oblique poly-magnetic loop devices 6 fix guide rail 7 oblique detection dish 8 probe support and the oblique probe of adjusting apparatus 9.
Detailed description of the invention:
In order to be more fully understood that and implement, provide specific embodiment below in conjunction with the accompanying drawings and describe the present invention in detail；Illustrated embodiment
It is only used for explaining the present invention, is not intended to limit protection scope of the present invention.
Embodiment 1, sees Fig. 1, according to design requirement be processed into mounting base 1, front end panel (installation side plate) 2, after
Gripper shoe (installation side plate) 3, oblique-magnetization coil 4, oblique poly-magnetic loop device 5, fixing guide rail 6, oblique detection dish 7, probe
Support and adjusting apparatus 8, oblique probe 9；Front end panel (installation side plate) 2, rear bearing sheet (installation side plate) 3 are separately fixed at
Both sides before and after mounting base 1, are arranged on the middle part of mounting base 1 by fixing guide rail 6, at front end panel (installation side plate)
Oblique-magnetization coil 4 is installed inside 2, oblique poly-magnetic loop device 5 is installed inside rear bearing sheet (installation side plate) 3；In oblique inspection
Have circular hole, probe support and adjusting apparatus 8 in the middle of survey dish 7 to be uniformly installed on oblique detection dish 7 along circular hole circumference, oblique spy
9 are installed in probe support and adjusting apparatus 8, are installed on mounting base 1 by fixing guide rail 6 by oblique detection dish 7, visit
Head support and adjusting apparatus 8 and oblique probe 9 are installed composition surface width increasing and are twice, and the most oblique probe 9 wafer uses oblique angle
Install；Oblique detection dish 7 can change the oblique of special angle according to the special angle of various outer diameter specification steel pipe natural flaw
Probe 9.
Embodiment 2, uses the device of above-described embodiment, it is achieved the oblique defect flux-leakage detection method of two-roller skew-rolling steel pipe,
Comprise the technical steps that:
A finds out the angular distribution rule of the oblique defect of steel pipe that two-roller skew-rolling technique produces；By oblique to different size steel pipe
Defect angular distribution is added up, and result uses the steel pipe of two-roller skew-rolling technique Rolling Production, because of the process characteristic of two-roller skew-rolling,
The angular distribution of its oblique defect is outer with steel pipe through relevant, Φ 159mm, Φ 168mm, Φ 194mm, tetra-kinds of external gauges of Φ 203mm
The oblique defect distribution of lattice steel pipe is 2 angles；Φ 219mm, two kinds of external diameter oblique defect distribution of specification steel pipe of Φ 245mm are at 4
Angle；Φ 299mm, two kinds of external diameter oblique defect distribution of specification steel pipe of Φ 325mm, 3 angles, are specifically shown in Table 1；
Table 1
B selects the oblique probe of customization proper angle；The defect that defect angle is consistent with head angle can be had by oblique detection
Effect detection, the effective angle scope that oblique probe detects oblique defect is ± 2 degree, therefore according to the above-mentioned various outer diameter counted
The angular distribution situation of the oblique defect of specification steel pipe, selects the oblique probe of the special angle of customization correspondence；
The oblique probe of special angle is respectively installed on the oblique detection dish of dimension by c；Various outer diameter specification steel pipe is oblique
Different oblique detection dishes need to be used to the Magnetic Flux Leakage Inspecting of defect, often overlap oblique detection dish and the oblique spy of 2 kinds of special angles is installed
Head, the Φ 203mm following external diameter oblique defect distribution of specification steel pipe needs the 1 oblique detection dish of set 2 angles；Outside more than Φ 219mm
The footpath oblique defect distribution of specification steel pipe, 3-4 angle, need to use 2 set oblique detection dish, respectively that different size steel pipe is corresponding
The oblique probe of special angle be installed on the oblique detection dish of dimension；
D changes different detection dishes according to the external diameter of Site Detection steel pipe；When scene is actually detected, according to the difference of steel pipe to be checked
External diameter, changes the oblique detection dish of the dimension having installed the oblique probe of special angle, so that it is guaranteed that oblique defect
Effectively detection, Φ 203mm following external diameter specification steel pipe only need to change 1 set oblique detection dish, Φ 219mm above external diameter specification steel pipe
2 set oblique detection dish need to be changed；Oblique detection dish is moved in and out by fixing guide rail and is replaced.
The natural flaw situation of the actual generation of steel pipe that the present invention uses two-roller skew-rolling technique to produce, by Ф 159-
203mm all size steel pipe oblique defect angular distribution situation is added up, and have found the angular distribution rule of the oblique defect of steel pipe
Rule, the oblique defect distribution of Ф 159-203mm steel pipe only has 2 angles, therefore every kind of specification of external diameter Ф 159-203mm specification steel pipe
Only need to use 1 set oblique detection dish that 2 kinds of special angle probes are installed, it is possible to accomplish effective detection angles scope of oblique probe
The oblique defect of body is all covered, it is ensured that effective detection of oblique defect, achieve better effects.
Claims (2)
1. the oblique defect flux-leakage detection method of a two-roller skew-rolling steel pipe, it is characterised in that comprise the technical steps that:
A finds out the angular distribution rule of the oblique defect of steel pipe that two-roller skew-rolling technique produces；By oblique to different size steel pipe
Defect angular distribution is added up, and result uses the steel pipe of two-roller skew-rolling technique Rolling Production, because of the process characteristic of two-roller skew-rolling,
The angular distribution of its oblique defect is outer with steel pipe through relevant, Φ 159mm, Φ 168mm, Φ 194mm, tetra-kinds of external gauges of Φ 203mm
The oblique defect distribution of lattice steel pipe is 2 angles；Φ 219mm, two kinds of external diameter oblique defect distribution of specification steel pipe of Φ 245mm are at 4
Angle；Φ 299mm, two kinds of external diameter oblique defect distribution of specification steel pipe of Φ 325mm, 3 angles, are specifically shown in Table 1；
Table 1
B selects the oblique probe of customization proper angle；The defect that defect angle is consistent with head angle can be had by oblique detection
Effect detection, the effective angle scope that oblique probe detects oblique defect is ± 2 degree, therefore according to the above-mentioned various outer diameter counted
The angular distribution situation of the oblique defect of specification steel pipe, selects the oblique probe of the special angle of customization correspondence；
The oblique probe of special angle is respectively installed on the oblique detection dish of dimension by c；Various outer diameter specification steel pipe is oblique
Different oblique detection dishes need to be used to the Magnetic Flux Leakage Inspecting of defect, often overlap oblique detection dish and the oblique spy of 2 kinds of special angles is installed
Head, the Φ 203mm following external diameter oblique defect distribution of specification steel pipe needs the 1 oblique detection dish of set 2 angles；Outside more than Φ 219mm
The footpath oblique defect distribution of specification steel pipe, 3-4 angle, need to use 2 set oblique detection dish, respectively that different size steel pipe is corresponding
The oblique probe of special angle be installed on the oblique detection dish of dimension；
D changes different detection dishes according to the external diameter of Site Detection steel pipe；When scene is actually detected, according to the difference of steel pipe to be checked
External diameter, changes the oblique detection dish of the dimension having installed the oblique probe of special angle, so that it is guaranteed that oblique defect
Effectively detection, Φ 203mm following external diameter specification steel pipe only need to change 1 set oblique detection dish, Φ 219mm above external diameter specification steel pipe
2 set oblique detection dish need to be changed；Oblique detection dish is moved in and out by fixing guide rail and is replaced.
2. realizing the detection device of the oblique defect flux-leakage detection method of the two-roller skew-rolling steel pipe of claim 1, it is by installing the end
Plate (1), front end panel (2), rear bearing sheet (3), oblique-magnetization coil (4), oblique poly-magnetic loop device (5), fixing guide rail
(6), oblique detection dish (7), probe support and adjusting apparatus (8), oblique probe (9) composition；Described front end panel (2), after
Gripper shoe (3) is separately fixed at both sides before and after mounting base (1), and fixing guide rail (6) is located at the pars intermedia of mounting base (1)
Position, front end panel (2) inner side sets oblique-magnetization coil (4), and rear bearing sheet (3) inner side sets oblique poly-magnetic loop device (5)；Oblique
Have circular hole, probe support and adjusting apparatus (8) in the middle of detection dish (7) and be uniformly installed on oblique detection dish (7) along circular hole circumference
On, oblique probe (9) is installed in probe support and adjusting apparatus (8), and oblique detection dish (7) is installed by fixing guide rail (6)
In mounting base (1)；It is characterized in that, described probe support and adjusting apparatus (8) and oblique probe (9) are installed and are engaged face width
Degree increasing is twice, and oblique probe (9) wafer uses oblique angle to install；Described oblique detection dish (7) is according to various outer diameter gauge steel
The special angle of pipe natural flaw changes the oblique probe (9) of special angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700602.7A CN106290554A (en) | 2016-08-23 | 2016-08-23 | The oblique defect flux-leakage detection method of a kind of two-roller skew-rolling steel pipe and detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700602.7A CN106290554A (en) | 2016-08-23 | 2016-08-23 | The oblique defect flux-leakage detection method of a kind of two-roller skew-rolling steel pipe and detection device |
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| CN106290554A true CN106290554A (en) | 2017-01-04 |
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| CN201610700602.7A Pending CN106290554A (en) | 2016-08-23 | 2016-08-23 | The oblique defect flux-leakage detection method of a kind of two-roller skew-rolling steel pipe and detection device |
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Citations (5)
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| CN101251512A (en) * | 2008-04-03 | 2008-08-27 | 合肥工业大学 | Portable steady magnetic field jackrod mass detecting instrument |
| CN102854241A (en) * | 2012-09-09 | 2013-01-02 | 合肥中大检测技术有限公司 | Axial magnetization device suitable for steel pipe short dead zone transverse defect high-speed detection |
| CN202735303U (en) * | 2012-06-21 | 2013-02-13 | 合肥环博检测科技有限公司 | Comprehensive sensor detection device for special steel pipes |
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2016
- 2016-08-23 CN CN201610700602.7A patent/CN106290554A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538108A (en) * | 1981-08-19 | 1985-08-27 | Nukem Gmbh | Testing arrangement for ferromagnetic bodies including magnetic field detectors extending between two pairs of poles of magnetic field generators spaced longitudinally along the body |
| CN101202148A (en) * | 2007-10-26 | 2008-06-18 | 华中科技大学 | Steel pipe partial oblique magnetization device |
| CN101251512A (en) * | 2008-04-03 | 2008-08-27 | 合肥工业大学 | Portable steady magnetic field jackrod mass detecting instrument |
| CN202735303U (en) * | 2012-06-21 | 2013-02-13 | 合肥环博检测科技有限公司 | Comprehensive sensor detection device for special steel pipes |
| CN102854241A (en) * | 2012-09-09 | 2013-01-02 | 合肥中大检测技术有限公司 | Axial magnetization device suitable for steel pipe short dead zone transverse defect high-speed detection |
Non-Patent Citations (2)
| Title |
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| 孙燕华 等: "基于单线圈斜向磁化的钢管漏磁检测方法", 《无损检测》 * |
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Application publication date: 20170104 |