CN103105431A - Eddy current high/low-frequency compound detection equipment for seamless steel tubes - Google Patents
Eddy current high/low-frequency compound detection equipment for seamless steel tubes Download PDFInfo
- Publication number
- CN103105431A CN103105431A CN2013100250604A CN201310025060A CN103105431A CN 103105431 A CN103105431 A CN 103105431A CN 2013100250604 A CN2013100250604 A CN 2013100250604A CN 201310025060 A CN201310025060 A CN 201310025060A CN 103105431 A CN103105431 A CN 103105431A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- roller
- frequency
- detection
- demagnetizer
- 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.)
- Granted
Links
Images
Abstract
The invention discloses eddy current high/low-frequency compound detection equipment for seamless steel tubes. The equipment comprises an electric control system, front and rear roller paths, a positioning pressure wheel device, a three-roller centering device, a lifting device, magnetizing devices, a flaw detection instrument, a demagnetizer, a stand and a blanking frame. The steel tubes to be detected stably enter into the pressure wheel device, the three-roller centering device and the two magnetizing devices through the transmission roller paths controlled by the electric control system for finishing full coverage detection of the steel tubes; the flaw detection instrument is used for displaying detection results; and the steel tubes enter into the demagnetizer and the stand for demagnetizing the steel tubes, finally enter into the blanking frame and are automatically separated and stored in qualified and unqualified product storage tanks. The equipment has the beneficial effects that each magnetizing device is equipped with a high-frequency probe and a low-frequency probe for on-line detection, so that the detection effect and the working efficiency are improved and the missing detection risk is lowered.
Description
Technical field
The present invention relates to a kind of defect-detecting equipment of weldless steel tube, relate in particular to a kind of defect-detecting equipment that utilizes eddy-current technique.
Background technology
the main material of producing bearing is weldless steel tube, the detection technique of weldless steel tube surface quality is existing is to adopt the through mode eddy current inspection equipment, principle is that steel pipe is passed a coil (probe) that is connected with alternating current, will produce eddy current magnetism in steel tube surface and nearly surface, when finding the steel pipe defectiveness, eddy current magnetism changes, cause impedance or the induced voltage of magnetic test coil (probe) to change, this variation is through the processing of instrument, send information, and then adopt the equivalent relative method to judge, confirm to have the size of zero defect and defective, but when the defective direction on weldless steel tube is parallel to the eddy current direction, detection sensitivity just is difficult to find defective, and also insensitive to the discontinuous defective of inside surface, particularly the internal surface of steel pipe planar defect of wall thickness more than 4.0mm is difficult to identification more.
Summary of the invention
Purpose of the present invention is exactly in order to overcome above-mentioned weak point of the prior art, and a kind of eddy current of seamless steel tube low-and high-frequency compound detection equipment that detects the good and high efficiency of effect is provided.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of eddy current of seamless steel tube low-and high-frequency compound detection equipment comprises electric-control system, front and back roller-way, location pressing wheel device, three-roller centring device, jacking gear, magnetizing assembly, detector device, demagnetizer and pallet, blanking rack.
Described electric-control system is arranged in independent regulator cubicle, the steel pipe that is used for the control defect-detecting equipment transmits, realizes steel pipe automatic loading/unloading, sorting, flaw indication warning, makes equipment complete automatic flaw detection, and be provided with manual and automatically control, electric-control system major electrical equipment spare has frequency converter and programmable controller, and adopts the incompatible interference protection measure of carrying out of bank of filters;
Stud with polyurethane being comprised of a plurality of live-rollers of described front and back roller-way outside live-roller, the protection steel tube surface is injury-free, and front and back roller-way length is respectively 9 meters, and the running roller spacing is 0.8 meter, and inspection speed 40-60 m/min, frequency control;
Described location pressing wheel device is comprised of base platform, motor reducer, centering driven roller, spring compression mechanism, sensor, after steel pipe is transported into positioning drive unit, automatically drive the steel pipe constant speed and pass magnetizing assembly and coil probe, but and the rotating operation;
Described three-roller centring device, be arranged on magnetizing assembly both sides, its effect is make steel pipe and magnetizing assembly concentric, and each pitch-row of described three-roller centring device is processed by numer centre, for guaranteeing the concentricity of equipment set, each parts machining precision will reach 7 grades;
Described jacking gear is comprised of base, upper mounting plate, inside and outside sleeve, elevating mechanism etc., when the steel pipe caliber difference of being detected a flaw causes the center High variation, regulated the lifting of magnetizing assembly by motor, reach the preset diameters height, lifter adopts worm gear structure, can self-locking;
Described magnetizing assembly mainly is made of probe, housing etc., it is characterized in that: described magnetizing assembly is equipped with high frequency probe and low-frequency probe, and carry out line and survey, described probe is a coil, during coil electricity, form eddy current magnetism, when the steel pipe defectiveness, eddy current magnetism can change, and impedance or the induced voltage of magnetic test coil change, this changes by the detector device demonstration, shows that steel pipe has the size of zero defect and defective;
The important technological parameters of described detector device:
1, detect frequency: 1kHz～990kHz is adjustable, adjusts with the 1kHz step-length;
2, gain: 0～69dB, adjust with the 1dB step-length;
3, phase place: 0～360 °, with 5 ° of step-length adjustment;
4, filtering: minutes 11 grades adjustable, is adapted to different inspection speeds;
5, display mode: the vector luminous point shows and linear time base shows;
6, type of alarm: amplitude type of alarm and sector type of alarm;
7, alarm threshold: 0～100%, with 10% step-length adjustment;
8, sweep time: divide the sweep time that linear time base shows 6 gears adjustable.
Described demagnetizer and pallet adopt the AC and DC demagnetizer, be placed in outside last group pinch roller of positioning drive unit endpiece, the direct current demagnetization device is regulated by the demagnetization instrument and is controlled, steel pipe is worked before entering the AC demagnetization device, after leaving, the pipe tail stops, prevent the demagnetizer heating, and the magnetometer of joining a range 30Gs;
Described blanking rack length is 8 meters, wide is 2.2 meters, all adopt the square tube of 100*100*5mm to make, has the automatic sorting function, make production tube and waste product pipe separately, and use soft land, avoid steel pipe mutually to collide during steel pipe blanking, cause and damage and noise, lay nylon sheet on table top and prevent that steel pipe from scratching.
The technological process that detects is: with the transmission roller channel of detected steel pipe via electric control system controls, enter pressing wheel device, three-roller centring device, steadily enter two magnetizing assemblys, the all standing of completing steel pipe detects, and detector device shows testing result, and steel pipe enters demagnetizer again and pallet demagnetizes to steel pipe, enter at last blanking rack, depending on steel pipe have the zero defect automatic sorting to just, the waste product hopper.
The invention has the beneficial effects as follows: due to the skin effect of eddy current, frequency is higher, surface sensitivity is higher, so the detection sensitivity to inwall and near surface flaw is lower, magnetizing assembly is equipped with high frequency probe and low-frequency probe now, and carries out line and survey, and completes simultaneously all standing EDDY CURRENT to steel pipe surfaces externally and internally defective on an equipment, detect effect and work efficiency thereby improve, reduce undetected risk.
Description of drawings
Fig. 1 is conventional main key equipment block scheme;
Fig. 2 is main key equipment block scheme of the present invention.
Embodiment
The invention will be further described below in conjunction with Fig. 2 and an embodiment:
A kind of eddy current of seamless steel tube low-and high-frequency compound detection equipment comprises electric-control system, front and back roller-way, location pressing wheel device, three-roller centring device, jacking gear, magnetizing assembly, detector device, demagnetizer and blanking rack.
Described electric-control system is arranged in independent regulator cubicle, and the steel pipe of controlling defect-detecting equipment transmits, realizes steel pipe automatic loading/unloading, sorting, flaw indication warning, makes equipment complete automatic flaw detection, and is provided with manual and automatically controls;
Described electric-control system major electrical equipment spare has frequency converter and programmable controller, and adopts the incompatible interference protection measure of carrying out of bank of filters;
Stud with polyurethane being comprised of a plurality of live-rollers of described front and back roller-way outside live-roller, the protection steel tube surface is injury-free, and front and back roller-way length is respectively 9 meters, and the running roller spacing is 0.8 meter, and inspection speed 40-60 m/min, frequency control;
Described location pressing wheel device is comprised of base platform, motor reducer, centering driven roller, spring compression mechanism, sensor, after steel pipe is transported into positioning drive unit, automatically drive the steel pipe constant speed and pass magnetizing assembly and coil probe, but and the rotating operation;
Described three-roller centring device, be arranged on magnetizing assembly both sides, its effect is make steel pipe and magnetizing assembly concentric, and each pitch-row of described three-roller centring device is processed by numer centre, for guaranteeing the concentricity of equipment set, each parts machining precision will reach 7 grades;
Described jacking gear is comprised of base, upper mounting plate, inside and outside sleeve, elevating mechanism etc., when the steel pipe caliber difference of being detected a flaw causes the center High variation, regulated the lifting of magnetizing assembly by motor, reach the preset diameters height, lifter adopts worm gear structure, can self-locking;
Described magnetizing assembly mainly is made of probe, housing etc., it is characterized in that: described magnetizing assembly is equipped with high frequency probe and low-frequency probe, and carry out line and survey, described probe is a coil, during coil electricity, form eddy current magnetism, when the steel pipe defectiveness, eddy current magnetism can change, and impedance or the induced voltage of magnetic test coil change, this changes by the detector device demonstration, shows that steel pipe has the size of zero defect and defective;
The important technological parameters of described detector device:
1, detect frequency: 1kHz～990kHz is adjustable, adjusts with the 1kHz step-length;
2, gain: 0～69dB, adjust with the 1dB step-length;
3, phase place: 0～360 °, with 5 ° of step-length adjustment;
4, filtering: minutes 11 grades adjustable, is adapted to different inspection speeds;
5, display mode: the vector luminous point shows and linear time base shows;
6, type of alarm: amplitude type of alarm and sector type of alarm;
7, alarm threshold: 0～100%, with 10% step-length adjustment;
8, sweep time: divide the sweep time that linear time base shows 6 gears adjustable.
Described demagnetizer and pallet adopt the AC and DC demagnetizer, be placed in outside last group pinch roller of positioning drive unit endpiece, the direct current demagnetization device is regulated by the demagnetization instrument and is controlled, steel pipe is worked before entering the AC demagnetization device, after leaving, the pipe tail stops, prevent the demagnetizer heating, and the magnetometer of joining a range 30Gs;
Described blanking rack length is 8 meters, wide is 2.2 meters, all adopt the square tube of 100*100*5mm to make, has the automatic sorting function, make production tube and waste product pipe separately, and use soft land, avoid steel pipe mutually to collide during steel pipe blanking, cause and damage and noise, lay nylon sheet on table top and prevent that steel pipe from scratching.
The technological process that detects is: the technological process of detection is: with the transmission roller channel of detected steel pipe via electric control system controls, enter pressing wheel device, three-roller centring device, steadily enter two magnetizing assemblys, the all standing of completing steel pipe detects, and detector device shows testing result, and steel pipe enters demagnetizer again and pallet demagnetizes to steel pipe, enter at last blanking rack, depending on steel pipe have the zero defect automatic sorting to just, the waste product hopper.
Claims (2)
1. eddy current of seamless steel tube low-and high-frequency compound detection equipment, comprise electric-control system, the front and back roller-way, the location pressing wheel device, three-roller centring device, jacking gear, magnetizing assembly, detector device, demagnetizer and pallet, blanking rack, described electric-control system is arranged in independent regulator cubicle, be used for controlling the steel pipe transmission of defect-detecting equipment, realize the steel pipe automatic loading/unloading, sorting, flaw indication is reported to the police, make equipment complete automatic flaw detection, and be provided with manual and automatically control, electric-control system major electrical equipment spare has frequency converter and programmable controller, and the incompatible interference protection measure of carrying out of employing bank of filters, stud with polyurethane being comprised of a plurality of live-rollers of described front and back roller-way outside live-roller, the protection steel tube surface is injury-free, and front and back roller-way length is respectively 9 meters, and the running roller spacing is 0.8 meter, and inspection speed 40-60 m/min, frequency control, described location pressing wheel device is comprised of base platform, motor reducer, centering driven roller, spring compression mechanism, sensor, after steel pipe is transported into positioning drive unit, automatically drive the steel pipe constant speed and pass magnetizing assembly and coil probe, but and the rotating operation, described three-roller centring device, be arranged on magnetizing assembly both sides, its effect is make steel pipe and magnetizing assembly concentric, and each pitch-row of described three-roller centring device is processed by numer centre, for guaranteeing the concentricity of equipment set, each parts machining precision will reach 7 grades, described jacking gear is comprised of base, upper mounting plate, inside and outside sleeve, elevating mechanism etc., when the steel pipe caliber difference of being detected a flaw causes the center High variation, regulated the lifting of magnetizing assembly by motor, reach the preset diameters height, lifter adopts worm gear structure, can self-locking, described magnetizing assembly mainly is made of probe, housing etc., it is characterized in that: described magnetizing assembly is equipped with high frequency probe and low-frequency probe, and carry out line and survey, described probe is a coil, during coil electricity, form eddy current magnetism, when the steel pipe defectiveness, eddy current magnetism can change, and impedance or the induced voltage of magnetic test coil change, this changes by the detector device demonstration, shows that steel pipe has the size of zero defect and defective, the important technological parameters of described detector device: 1, detect frequency: 1kHz～990kHz is adjustable, adjusts with the 1kHz step-length, 2, gain: 0～69dB, adjust with the 1dB step-length, 3, phase place: 0～360 °, with 5 ° of step-length adjustment, 4, filtering: minutes 11 grades adjustable, is adapted to different inspection speeds, 5, display mode: the vector luminous point shows and linear time base shows, 6, type of alarm: amplitude type of alarm and sector type of alarm, 7, alarm threshold: 0～100%, with 10% step-length adjustment, 8, sweep time: divide the sweep time that linear time base shows 6 gears adjustable, described demagnetizer and pallet adopt the AC and DC demagnetizer, be placed in outside last group pinch roller of positioning drive unit endpiece, the direct current demagnetization device is regulated by the demagnetization instrument and is controlled, steel pipe is worked before entering the AC demagnetization device, after leaving, the pipe tail stops, prevent the demagnetizer heating, and the magnetometer of joining a range 30Gs, described blanking rack length is 8 meters, wide is 2.2 meters, all adopt the square tube of 100*100*5mm to make, has the automatic sorting function, make production tube and waste product pipe separately, and use soft land, avoid steel pipe mutually to collide during steel pipe blanking, cause and damage and noise, lay nylon sheet on table top and prevent that steel pipe from scratching.
2. a kind of eddy current of seamless steel tube low-and high-frequency compound detection equipment according to claim 1, it is characterized in that: the technological process of detection is: with the transmission roller channel of detected steel pipe via electric control system controls, enter pressing wheel device, three-roller centring device, steadily enter two magnetizing assemblys, the all standing of completing steel pipe detects, detector device shows testing result, steel pipe enters demagnetizer again and pallet demagnetizes to steel pipe, enter at last blanking rack, depending on steel pipe have the zero defect automatic sorting to just, the waste product hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025060.4A CN103105431B (en) | 2013-01-15 | 2013-01-15 | Eddy current high/low-frequency compound detection equipment for seamless steel tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025060.4A CN103105431B (en) | 2013-01-15 | 2013-01-15 | Eddy current high/low-frequency compound detection equipment for seamless steel tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103105431A true CN103105431A (en) | 2013-05-15 |
| CN103105431B CN103105431B (en) | 2015-06-03 |
Family
ID=48313441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310025060.4A Expired - Fee Related CN103105431B (en) | 2013-01-15 | 2013-01-15 | Eddy current high/low-frequency compound detection equipment for seamless steel tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103105431B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278559A (en) * | 2013-04-25 | 2013-09-04 | 宁波金特信钢铁科技有限公司 | Eddy current detecting device of seamless steel tubes |
| CN103487503A (en) * | 2013-09-26 | 2014-01-01 | 上海海事大学 | Rotating magnetic field eddy current detection probe |
| CN104330467B (en) * | 2014-11-11 | 2017-03-29 | 浙江五洲新春集团股份有限公司 | Steel Pipe For Bearing flaw detection production line |
| CN108845025A (en) * | 2018-05-30 | 2018-11-20 | 中国航发动力股份有限公司 | A kind of eddy detection system and method for the pin hole with copper sheathing |
| CN109975397A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | Heat-transfer pipe damage information high-fidelity extracting method based on multifrequency Eddy complex signal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780554A (en) * | 1980-11-07 | 1982-05-20 | Sumitomo Metal Ind Ltd | Eddy-current crack detection testing device |
| JPH01301161A (en) * | 1988-05-30 | 1989-12-05 | Mitsubishi Metal Corp | Eddy current induction type defect detecting device |
| CN2205557Y (en) * | 1994-07-07 | 1995-08-16 | 张永和 | Automatic vertex crack detector for steel pipe |
| JPH10153581A (en) * | 1996-11-22 | 1998-06-09 | Nippon Metal Ind Co Ltd | Inspection method for high-frequency welded steel pipe, and its manufacturing equipment |
| CN2494986Y (en) * | 2001-09-29 | 2002-06-12 | 中国科学院金属研究所 | Ultrasound and eddy current compound automatic detecting apparatus for tubing |
| CN101241108A (en) * | 2008-03-03 | 2008-08-13 | 山东济宁模具厂 | Eddy current inspection equipment |
-
2013
- 2013-01-15 CN CN201310025060.4A patent/CN103105431B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780554A (en) * | 1980-11-07 | 1982-05-20 | Sumitomo Metal Ind Ltd | Eddy-current crack detection testing device |
| JPH01301161A (en) * | 1988-05-30 | 1989-12-05 | Mitsubishi Metal Corp | Eddy current induction type defect detecting device |
| CN2205557Y (en) * | 1994-07-07 | 1995-08-16 | 张永和 | Automatic vertex crack detector for steel pipe |
| JPH10153581A (en) * | 1996-11-22 | 1998-06-09 | Nippon Metal Ind Co Ltd | Inspection method for high-frequency welded steel pipe, and its manufacturing equipment |
| CN2494986Y (en) * | 2001-09-29 | 2002-06-12 | 中国科学院金属研究所 | Ultrasound and eddy current compound automatic detecting apparatus for tubing |
| CN101241108A (en) * | 2008-03-03 | 2008-08-13 | 山东济宁模具厂 | Eddy current inspection equipment |
Non-Patent Citations (2)
| Title |
|---|
| 左建国 等: "钢管自动涡流探伤系统", 《钢管》, no. 6, 31 December 1992 (1992-12-31), pages 52 - 54 * |
| 蔡杰 等: "钢管自动涡流探伤系统设计", 《大连轻工业学院学报》, vol. 24, no. 4, 31 December 2005 (2005-12-31), pages 309 - 312 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278559A (en) * | 2013-04-25 | 2013-09-04 | 宁波金特信钢铁科技有限公司 | Eddy current detecting device of seamless steel tubes |
| CN103278559B (en) * | 2013-04-25 | 2016-12-28 | 宁波金特信钢铁科技有限公司 | A kind of eddy current of seamless steel tube detection device |
| CN103487503A (en) * | 2013-09-26 | 2014-01-01 | 上海海事大学 | Rotating magnetic field eddy current detection probe |
| CN103487503B (en) * | 2013-09-26 | 2016-01-13 | 上海海事大学 | A kind of rotating magnetic field eddy current probe |
| CN104330467B (en) * | 2014-11-11 | 2017-03-29 | 浙江五洲新春集团股份有限公司 | Steel Pipe For Bearing flaw detection production line |
| CN109975397A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | Heat-transfer pipe damage information high-fidelity extracting method based on multifrequency Eddy complex signal |
| CN109975397B (en) * | 2017-12-27 | 2022-06-28 | 核动力运行研究所 | Multi-frequency eddy current complex signal-based high-fidelity extraction method for damage information of heat transfer pipe |
| CN108845025A (en) * | 2018-05-30 | 2018-11-20 | 中国航发动力股份有限公司 | A kind of eddy detection system and method for the pin hole with copper sheathing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103105431B (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203324226U (en) | Vortex detecting device of seamless steel pipes | |
| CN103105431B (en) | Eddy current high/low-frequency compound detection equipment for seamless steel tubes | |
| CN104384113B (en) | Roller automatic sorting detection device | |
| CN201503415U (en) | Online detection device for strip welding seam defects | |
| CN108760874A (en) | A kind of non-destructive testing device and method of steel wire rope | |
| CN201828544U (en) | Magnetic powder inspection device for sampling wire | |
| CN104280456A (en) | System applied to ultrasonic detection of defects of gas cylinders | |
| CN104407043A (en) | On-line defect detection device for steel cords based on electromagnetic induction and detection method thereof | |
| CN105004785A (en) | Steel pipe eddy-current inspector | |
| CN101710099A (en) | Fluorescent magnetic powder flaw detection flow line for drill rod joint | |
| CN204086216U (en) | A kind of gas cylinder defect ultrasonic testing system | |
| CN106311621A (en) | Sorting device and method for wheel types of different dimensions | |
| CN204294518U (en) | Roller automatic sorting checkout gear | |
| CN205271191U (en) | Welding bead intellectual detection system machine imaging system | |
| CN106990164A (en) | A kind of steel pipe longitudinal defect magnetic leakage crack detection device based on rotary magnetization | |
| CN204666084U (en) | Semi-automatic linearity testing apparatus | |
| CN103837594A (en) | Magnetic flux leakage detecting device for steel pipe and detection method thereof | |
| CN203479750U (en) | High- and low-frequency eddy-current compound detection equipment for seamless steel tube | |
| CN204707276U (en) | Car horn sound pressure level testing apparatus | |
| CN217084791U (en) | A crimping damage detection device that is used for strain clamp inside wire steel core | |
| CN113984883A (en) | Full-automatic fluorescent magnetic powder flaw detector for annular parts | |
| CN114428109A (en) | Test piece for magnetic powder detection by coil method and detection method of test piece | |
| CN1131429C (en) | Method for inspecting surface defects of ferromagnetic material by geomagnetic field | |
| CN104267096A (en) | Nondestructive testing method and device for casting defects of tube blanks | |
| Bulychev et al. | The UMD-104M device for testing reusable oil-well tubing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20160115 |
|
| EXPY | Termination of patent right or utility model |