CN110887895A - Stainless steel square welded tube welding seam eddy current on-line measuring device - Google Patents
Stainless steel square welded tube welding seam eddy current on-line measuring device Download PDFInfo
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- CN110887895A CN110887895A CN201911087867.4A CN201911087867A CN110887895A CN 110887895 A CN110887895 A CN 110887895A CN 201911087867 A CN201911087867 A CN 201911087867A CN 110887895 A CN110887895 A CN 110887895A
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- eddy current
- stainless steel
- welding seam
- steel square
- welded pipe
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- 238000003466 welding Methods 0.000 title claims abstract description 27
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 21
- 239000010935 stainless steel Substances 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 239000000523 sample Substances 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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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
- 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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
-
- 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
- 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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
-
- 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
- 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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9093—Arrangements for supporting the sensor; Combinations of eddy-current sensors and auxiliary arrangements for marking or for rejecting
Abstract
The invention relates to a stainless steel square welded pipe welding seam eddy current online detection device which comprises a base, a vertical height adjusting mechanism arranged on the base, a horizontal displacement adjusting mechanism arranged on the vertical height adjusting mechanism, an elastic up-and-down movement mechanism arranged on the horizontal displacement adjusting mechanism in a moving mode along the vertical direction, a rolling mechanism and an eddy current point probe mechanism, wherein the rolling mechanism and the eddy current point probe mechanism are respectively arranged at the bottom of the elastic up-and-down movement mechanism. Compared with the prior art, the device can more simply realize the eddy current online flaw detection of the stainless steel square welded pipe, does not need to additionally open another production line, only needs to be arranged at the tail end of the water square pipe production line, and is time-saving, labor-saving, flexible and reliable; the consistency of the lift-off distance in the eddy current point type probe detection process is ensured, the influence of the lift-off effect in the detection process is avoided, and the reliability of the detection result is finally ensured.
Description
Technical Field
The invention belongs to the technical field of nondestructive flaw detection of welding seams of stainless steel square welded pipes, and relates to an online eddy current detection device for welding seams of stainless steel square welded pipes for an automobile exhaust gas recirculation system.
Background
The EGR technology used by the automobile exhaust gas recirculation system refers to the technology that a part of exhaust gas is separated after combustion of an internal combustion engine and is guided into an air inlet side to be combusted again, and the main purpose is to reduce nitrogen oxides in the exhaust gas and improve the fuel consumption rate when sharing part of load. A welded pipe used for EGR is influenced by different factors such as a forming die, a welding process and the like in the welding process, typical welding defects such as cracks, air holes, undercut, slag inclusion, incomplete fusion, incomplete penetration and the like are easily generated, great potential safety hazards are brought to automobile products, and the life and property safety of people is finally influenced.
At present, the defect detection of the welding seam of the welded pipe mainly comprises ultrasonic off-line detection, eddy current and the like, but the production and forming process of the square welded pipe mainly has the characteristics of unstable position of the welded pipe and high detection precision requirement, so that the conventional flaw detection method cannot meet the detection requirement.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the eddy current online detection device for the welding seam of the square stainless steel welded pipe, which completely avoids the adverse effect of the unstable position of the welded pipe on the detection process from the aspects of practicality and simplicity and convenience in operation, can meet the online detection of the welding seam of the square welded pipe with different geometric dimensions, has good detection effect, and can find and eliminate products with the typical welding defects before the final finished square welded pipe.
The purpose of the invention can be realized by the following technical scheme:
the device comprises a base, a vertical height adjusting mechanism arranged on the base, a horizontal displacement adjusting mechanism arranged on the vertical height adjusting mechanism, an elastic up-and-down movement mechanism arranged on the horizontal displacement adjusting mechanism in a moving mode along the vertical direction, and a rolling mechanism and a vortex point probe mechanism which are respectively arranged at the bottom of the elastic up-and-down movement mechanism.
Further, the base be equipped with a pair ofly altogether, vertical height adjustment mechanism include a pair of riser and the crossbeam board of level setting between two risers that sets up on two bases respectively, the riser on seted up riser waist groove along vertical direction, the tip of crossbeam board seted up with riser waist groove looks adaptation's first crossbeam board screw. And moving the cross beam plate to a proper height along the vertical plate waist groove, and then, penetrating the vertical plate waist groove by using bolts and then screwing and fixing the cross beam plate in the first cross beam plate screw hole so as to fix the cross beam plate at the height.
Furthermore, a supporting plate matched with the vertical plate is arranged on the base.
Further, horizontal displacement adjustment mechanism include and remove the removal anchor clamps that set up on the crossbeam board along the horizontal direction, the both ends of removal anchor clamps all seted up removal anchor clamps waist groove, the crossbeam board on set up with the second crossbeam board screw that removes anchor clamps waist groove looks adaptation. And moving the movable clamp to a proper horizontal position along the horizontal direction, and then, penetrating the waist groove of the movable clamp by using a bolt, screwing and fixing the movable clamp in the screw hole of the second cross beam plate so as to fix the movable clamp at the horizontal position.
Furthermore, the movable clamp is provided with a movable clamp through hole, and the elastic up-and-down movement mechanism comprises a linear bearing arranged in the movable clamp through hole, a long shaft penetrating through the linear bearing along the vertical direction, and an upper spring and a lower spring which are sleeved on the long shaft one above the other respectively. The long shaft moves up and down through the linear bearing. The upper spring and the lower spring respectively provide corresponding elastic restoring force.
Furthermore, the top of the long shaft is provided with a limiting shaft end, the bottom of the long shaft is provided with a probe support, the upper spring is positioned between the limiting shaft end and the movable clamp, and the lower spring is positioned between the probe support and the movable clamp. The limiting shaft end limits the top of the long shaft.
Furthermore, a cross beam plate waist groove matched with the long shaft is formed in the cross beam plate, and the length direction of the cross beam plate waist groove is parallel to the length direction of the movable clamp waist groove. When the movable clamp moves along the horizontal direction, the long shaft passes through the waist groove of the cross beam plate and moves synchronously along with the movable clamp.
Furthermore, the rolling mechanism comprises a pair of bearing ends arranged at the bottom of the probe bracket in parallel, a connecting shaft arranged between the two bearing ends along the horizontal direction and a bearing sleeved on the connecting shaft, and an inner ring of the bearing is fixedly connected with the connecting shaft. The outer ring of the bearing is free to rotate.
Furthermore, a shaft sleeve is further sleeved on the connecting shaft. And the bearing inner ring is fixed on the connecting shaft in the horizontal direction through a shaft shoulder of the connecting shaft and the shaft sleeve.
Furthermore, the eddy current point probe mechanism comprises a probe jack arranged on the probe bracket and an eddy current point probe penetrating through the probe jack. The eddy current point probe is used for carrying out online flaw detection on the square tube.
Aiming at the welding defects of the welded pipe, the invention mainly concentrates on the inner surface and the outer surface of the welding seam, and the detection of the welding seam is enhanced by arranging the eddy point probe.
Compared with the prior art, the invention has the following characteristics:
1) the invention can more simply realize the eddy current online flaw detection of the stainless steel square welded pipe, does not need to additionally open another production line, only needs to install the device at the tail end of the water square pipe production line, and is time-saving, labor-saving, flexible and reliable.
2) The invention ensures the consistency of the lift-off distance in the detection process of the eddy current point type probe, avoids the influence of the lift-off effect in the detection process and finally ensures the reliability of the detection result.
3) The invention is suitable for the detection of the micro defects of stainless steel welded pipes with different pipe diameters, and the probe can be adjusted quickly and conveniently when different welded pipes are replaced for detection.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a movable clamp of the present invention;
FIG. 3 is a schematic view of the probe carrier of the present invention;
FIG. 4 is a schematic structural diagram of a rolling mechanism and an eddy current spot probe mechanism according to the present invention;
FIG. 5 is a schematic view of the detection process of the present invention;
the notation in the figure is:
the device comprises a base 1, a support plate 2, a vertical plate 3, a cross beam plate 4, a movable clamp 5, a linear bearing 6, a long shaft 7, a limiting shaft end 8, a probe support 9, a bearing end 10, a bearing 11, a connecting shaft 12, a shaft sleeve 13, an eddy point probe 14, a lower spring 15, a vertical plate waist groove 16, a movable clamp waist groove 17, a movable clamp through hole 18, a cross beam plate waist groove 19, a probe jack 20 and an upper spring 21.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
as shown in fig. 1-4, a vertical plate 3 is fixed on a base 1 through bolts, two sides of the vertical plate are reinforced and supported by a support plate 2, and the base 1 is fixed on a tail end workbench of a water square pipe production line through bolts; the two sides of the crossbeam plate 4 are locked in the vertical plate waist grooves 16 through bolt gaskets and can move up and down in the vertical plate waist grooves 16 to control the height, the movable clamp waist grooves 17 at the two ends of the movable clamp 5 are locked in the second crossbeam plate screw holes through the bolt gaskets to carry out horizontal positioning, and the linear bearing 6 is in clearance fit with the movable clamp through holes 18 in the movable clamp 5 and is locked and positioned through the screw holes at the two sides; the limiting shaft end 8 is fixed at the top of the long shaft 7 for limiting, the long shaft 7 penetrates through an upper spring 21 (a short spring), the linear bearing 6 and the crossbeam plate waist groove 19, and then a lower spring 15 (a long spring) is sleeved in the long shaft, so that the elastic change of the vertical position of the probe support 9 is realized. The two long shafts 7 are fixed on a probe support 9 and connected through bolts, the bearing ends 10 are locked on the probe support 9 through bolts, two ends of a connecting shaft 12 are fixed on the bearing ends 10, two bearings 11 are fixed on the connecting shaft 12 in the horizontal direction through shaft shoulders and shaft sleeves 13, so that the probe support 9 can be stabilized above a square pipe through rolling of outer rings of the bearings 11, and an eddy point probe 14 is fixed at the other end of the probe support 9 through locking screws, so that online detection of the square pipe is realized.
And determining the height of the probe bracket 9 according to the specification of the stainless steel welded pipe to be detected so as to adjust the fixed height of the beam plate 4 on the vertical plate waist groove 16. The device maintains the position stability of the probe bracket 9 by means of the rotation of the bearing 11 arranged on the connecting shaft 12 on the square tube, the probe bracket 9 can make the long shaft 7 move up and down on the linear bearing 6 through the extension and retraction of the upper spring 21 and the lower spring 15, the elastic change of the vertical position of the probe bracket 9 is realized, and thus the distance between the eddy current point probe 14 and the welding seam of the square tube is stable, and the detection result is more standard and accurate; riser 3 passes through bolt locking on base 1 to there are two backup pads 2 to consolidate, make the device more firm, there is the waist groove to realize the fine setting of position on the base 1, thereby makes the installation more simple and convenient, fixes a position more accurately.
As shown in fig. 5, the eddy current point probe 14 is mounted on the probe support 9 for detection, and once the square tube weld joint is detected to be unqualified, a signal is fed back to the computer processor, then the feedback signal is processed, an alarm signal and a trigger alarm are output, the output signal triggers the marking device, and then the blanking machine performs classification processing.
Example 2:
the eddy current online detection device for the welding seam of the stainless steel square welded pipe shown in figure 1 comprises a base 1, a vertical height adjusting mechanism arranged on the base 1, a horizontal displacement adjusting mechanism arranged on the vertical height adjusting mechanism, an elastic up-and-down movement mechanism arranged on the horizontal displacement adjusting mechanism in a moving mode along the vertical direction, a rolling mechanism and an eddy current point probe mechanism, wherein the rolling mechanism and the eddy current point probe mechanism are respectively arranged at the bottom of the elastic up-and-down movement mechanism.
Wherein, base 1 is equipped with a pair ofly altogether, and vertical height adjustment mechanism includes that a pair of riser 3 and the horizontal setting that sets up respectively on two bases 1 set up the crossbeam board 4 between two risers 3, has seted up riser waist groove 16 along vertical direction on the riser 3, and the tip of crossbeam board 4 is seted up the first crossbeam board screw with 16 looks adaptations of riser waist groove. The base 1 is provided with a supporting plate 2 matched with the vertical plate 3.
Horizontal displacement adjustment mechanism includes and moves the removal anchor clamps 5 that set up on crossbeam board 4 along the horizontal direction, and removal anchor clamps waist groove 17 has all been seted up at the both ends of removing anchor clamps 5, sets up the second crossbeam board screw with removal anchor clamps waist groove 17 looks adaptation on crossbeam board 4.
As shown in fig. 2, a moving clamp through hole 18 is formed in the moving clamp 5, and the elastic up-down movement mechanism includes a linear bearing 6 disposed in the moving clamp through hole 18, a long shaft 7 penetrating through the linear bearing 6 in the vertical direction, and an upper spring 21 and a lower spring 15 which are respectively sleeved on the long shaft 7. The top of major axis 7 is equipped with spacing axle head 8, and the bottom of major axis 7 is equipped with probe support 9, and upper spring 21 is located between spacing axle head 8 and the removal anchor clamps 5, and lower spring 15 is located between probe support 9 and the removal anchor clamps 5. The crossbeam plate 4 is provided with a crossbeam plate waist groove 19 matched with the long shaft 7, and the crossbeam plate waist groove 19 is parallel to the length direction of the movable clamp waist groove 17.
As shown in fig. 3 and 4, the rolling mechanism includes a pair of bearing ends 10 arranged in parallel at the bottom of the probe holder 9, a connecting shaft 12 arranged between the two bearing ends 10 along the horizontal direction, and a bearing 11 sleeved on the connecting shaft 12, and an inner ring of the bearing 11 is fixedly connected with the connecting shaft 12. The connecting shaft 12 is also sleeved with a bushing 13. The eddy current point probe mechanism comprises a probe jack 20 arranged on the probe bracket 9 and an eddy current point probe 14 penetrating through the probe jack 20.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The eddy current online detection device for the welding seam of the stainless steel square welded pipe is characterized by comprising a base (1), a vertical height adjusting mechanism arranged on the base (1), a horizontal displacement adjusting mechanism arranged on the vertical height adjusting mechanism, an elastic up-and-down movement mechanism arranged on the horizontal displacement adjusting mechanism in a moving mode along the vertical direction, a rolling mechanism and an eddy current point probe mechanism, wherein the rolling mechanism and the eddy current point probe mechanism are respectively arranged at the bottom of the elastic up-and-down movement mechanism.
2. The eddy current online detection device for the welding seam of the stainless steel square welded pipe according to claim 1, characterized in that the base (1) is provided with a pair of vertical plates (3) respectively arranged on the two bases (1) and a cross beam plate (4) horizontally arranged between the two vertical plates (3), the vertical plates (3) are provided with vertical plate waist grooves (16) along the vertical direction, and the end parts of the cross beam plate (4) are provided with first cross beam plate screw holes matched with the vertical plate waist grooves (16).
3. The eddy current online detection device for the welding seam of the stainless steel square welded pipe according to claim 2 is characterized in that a supporting plate (2) matched with a vertical plate (3) is arranged on the base (1).
4. The eddy current online detection device for the welding seam of the stainless steel square welded pipe according to claim 2, wherein the horizontal displacement adjusting mechanism comprises a movable clamp (5) which is arranged on the beam plate (4) in a movable manner along the horizontal direction, the two ends of the movable clamp (5) are respectively provided with a movable clamp waist groove (17), and the beam plate (4) is provided with a second beam plate screw hole which is matched with the movable clamp waist groove (17).
5. The eddy current online detection device for the welding seam of the stainless steel square welded pipe according to claim 4, wherein a movable clamp through hole (18) is formed in the movable clamp (5), and the elastic up-and-down movement mechanism comprises a linear bearing (6) arranged in the movable clamp through hole (18), a long shaft (7) penetrating through the linear bearing (6) in the vertical direction, and an upper spring (21) and a lower spring (15) which are sleeved on the long shaft (7) one above the other respectively.
6. The eddy current online detection device for the welding seam of the stainless steel square welded pipe according to claim 5, characterized in that a limiting shaft end (8) is arranged at the top of the long shaft (7), a probe bracket (9) is arranged at the bottom of the long shaft (7), the upper spring (21) is positioned between the limiting shaft end (8) and the movable clamp (5), and the lower spring (15) is positioned between the probe bracket (9) and the movable clamp (5).
7. The eddy current online detection device for the welding seam of the stainless steel square welded pipe according to claim 6, wherein a crossbeam plate waist groove (19) matched with the long shaft (7) is formed in the crossbeam plate (4), and the crossbeam plate waist groove (19) is parallel to the length direction of the movable clamp waist groove (17).
8. The eddy current online detection device for the welding seam of the stainless steel square welded pipe according to claim 6, wherein the rolling mechanism comprises a pair of bearing ends (10) which are arranged at the bottom of the probe bracket (9) in parallel, a connecting shaft (12) which is arranged between the two bearing ends (10) along the horizontal direction, and a bearing (11) which is sleeved on the connecting shaft (12), and the inner ring of the bearing (11) is fixedly connected with the connecting shaft (12).
9. The eddy current on-line detection device for the welding seam of the stainless steel square welded pipe according to claim 8, characterized in that a shaft sleeve (13) is further sleeved on the connecting shaft (12).
10. The eddy current online detection device for the welding seam of the stainless steel square-shaped welded pipe according to claim 6, characterized in that the eddy current point probe mechanism comprises a probe insertion hole (20) formed in the probe bracket (9) and an eddy current point probe (14) penetrating through the probe insertion hole (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087867.4A CN110887895A (en) | 2019-11-08 | 2019-11-08 | Stainless steel square welded tube welding seam eddy current on-line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087867.4A CN110887895A (en) | 2019-11-08 | 2019-11-08 | Stainless steel square welded tube welding seam eddy current on-line measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN110887895A true CN110887895A (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911087867.4A Pending CN110887895A (en) | 2019-11-08 | 2019-11-08 | Stainless steel square welded tube welding seam eddy current on-line measuring device |
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| CN (1) | CN110887895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896613A (en) * | 2020-07-29 | 2020-11-06 | 上海应用技术大学 | Stainless steel flat welded pipe welding seam defect eddy current on-line measuring device |
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| JP2008151588A (en) * | 2006-12-15 | 2008-07-03 | Idemitsu Eng Co Ltd | Flaw evaluation method of two-layered bellows and eddy current flaw detector used therein |
| CN204008554U (en) * | 2014-08-04 | 2014-12-10 | 吴立新 | A kind of probe holder regulating device of Steel Pipe Eddy Detection |
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| CN206594102U (en) * | 2017-03-29 | 2017-10-27 | 无锡市蓝博金属制品有限公司 | A kind of automobile welded tube Eddy current detector |
| CN207850986U (en) * | 2018-01-26 | 2018-09-11 | 南京博克纳自动化系统有限公司 | Welded tube EDDY CURRENT machine |
| CN108828061A (en) * | 2018-06-14 | 2018-11-16 | 上海应用技术大学 | A kind of eddy current testing device of stainless steel jointless short tube surface microscopic defect |
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2019
- 2019-11-08 CN CN201911087867.4A patent/CN110887895A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005181134A (en) * | 2003-12-19 | 2005-07-07 | Sumitomo Pipe & Tube Co Ltd | Nondestructive testing method for seamed section of electro-resistance-welded tube and probe-type eddy-current flaw detector |
| JP2008151588A (en) * | 2006-12-15 | 2008-07-03 | Idemitsu Eng Co Ltd | Flaw evaluation method of two-layered bellows and eddy current flaw detector used therein |
| CN101144826A (en) * | 2007-11-07 | 2008-03-19 | 钢铁研究总院 | Heavy caliber seamless steel pipe supersonic and vortex combined automatic detection device and uses |
| CN104458901A (en) * | 2013-10-10 | 2015-03-25 | 上海宝信软件股份有限公司 | Probe positioning mechanical contact type surface form tracking support for rotary advancing eddy current detection |
| CN204008554U (en) * | 2014-08-04 | 2014-12-10 | 吴立新 | A kind of probe holder regulating device of Steel Pipe Eddy Detection |
| CN206594102U (en) * | 2017-03-29 | 2017-10-27 | 无锡市蓝博金属制品有限公司 | A kind of automobile welded tube Eddy current detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896613A (en) * | 2020-07-29 | 2020-11-06 | 上海应用技术大学 | Stainless steel flat welded pipe welding seam defect eddy current on-line measuring device |
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Application publication date: 20200317 |
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