CN102759566B - Strong-magnetism clamp and method for realizing fluorescent magnetic particle flaw detection of wheel trough milling cutter by using same - Google Patents
Strong-magnetism clamp and method for realizing fluorescent magnetic particle flaw detection of wheel trough milling cutter by using same Download PDFInfo
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- CN102759566B CN102759566B CN201210218205.8A CN201210218205A CN102759566B CN 102759566 B CN102759566 B CN 102759566B CN 201210218205 A CN201210218205 A CN 201210218205A CN 102759566 B CN102759566 B CN 102759566B
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- holding device
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Abstract
The invention discloses a strong-magnetism clamp and a method for realizing the fluorescent magnetic particle flaw detection of a wheel trough milling cutter by using the same, relating to the clamp and the method for the flaw detection of the wheel trough milling cutter and aiming to solve the problems of circumferential magnetization of a blade part of the wheel trough milling cutter and low flaw detection accuracy for the wheel trough milling cutter when the conventional equipment and process are adopted. Middle parts of two opposite side faces of a strong-magnetism clamp body are respectively and fixedly connected with one end of an electroconductive copper bar, the two electroconductive copper bars are arranged coaxially, the middle part of the upper surface of the strong-magnetism clamp body is provided with a through magnetic conducting slot for holding a workpiece along an axial direction of the electroconductive copper bars. The method comprises the following steps of: adding prepared fluorescent hydromagnetic suspension in a liquid slot of a flaw detector; selecting magnetization current; positioning and installing the strong-magnetism clamp and the wheel trough milling cutter to be detected; magnetizing the wheel trough milling cutter to be detected for flaw detection; demagnetizing the wheel trough milling cutter subjected to the flaw detection; and taking down the wheel trough milling cutter to complete flaw detection. The strong-magnetism clamp and the method are used for carrying out the fluorescent magnetic particle flaw detection on the wheel trough milling cutter.
Description
Technical field
The present invention relates to fixture and wheel groove milling cutter method of detection.
Background technology
After wheel groove milling cutter completion of processing, carrying out flaw detection to it is a very important operation, and the crackle that wheel groove milling cutter produces in forging and heat treatment process, with the naked eye cannot find at all, just can only can find fault location by the method for detecting a flaw.When circumferential magnetization is done in order to find longitudinal defect to wheel groove milling cutter flaw detection position, because of blade out-of-shape, very strong demagnetizing field can be formed at circumferencial direction, and adopt conventional equipment and technique to be difficult to solve the low problem of the flaw detection degree of accuracy of wheel groove milling cutter blade circumferential magnetization and wheel groove milling cutter.
Summary of the invention
The object of this invention is to provide a kind of strong magnetic holding device and realize wheel groove milling cutter fluorescent magnetic particle flaw detection method with this strong magnetic holding device, adopting conventional equipment and technique to be difficult to solve the low problem of the flaw detection degree of accuracy of wheel groove milling cutter blade circumferential magnetization and wheel groove milling cutter to solve.
The present invention solves the problems of the technologies described above the technical scheme taked to be:
Strong magnetic holding device of the present invention, described strong magnetic holding device comprises strong magnetic holding device body and two conduction copper rods, the middle part of the side that two of strong magnetic holding device body are corresponding is each affixed with an one end of conducting electricity copper rod, two conduction copper rods are coaxially arranged, and the through processing of axis direction one of edge, the middle part conduction copper rod of the upper surface of strong magnetic holding device body is for placing the magnetic conductive groove of wheel groove milling cutter to be checked.
Wheel groove milling cutter fluorescent magnetic particle flaw detection method of the present invention, described method is realized by following steps:
Step one, in defectoscope liquid bath, add the fluorescence hydromagnetic suspension configured, described fluorescence hydromagnetic suspension is added in 1 premium on currency formulated by the defoamer of the sodium nitrite of the emulsifying agent of 5-10 gram, 15-20 gram, 0.5-1 gram and the MPI fluorescent magnetic particles of 0.5-2 gram;
Step 2, selected magnetization current; Magnetization current I=10D, D are the maximum outside diameter of wheel groove milling cutter to be checked, unit mm;
Step 3, location install described strong magnetic holding device and wheel groove milling cutter to be checked; The magnetic conductive groove of described strong magnetic holding device is arranged upward, the conduction copper rod at strong magnetic holding device two ends is clamped by the head, tail frame chuck of fluorescent magnetic particle inspection machine, the flaw detection position of described wheel groove milling cutter to be checked is put into the magnetic conductive groove of this strong magnetic holding device, prepare magnetization;
Step 4, magnetize wheel groove milling cutter to be checked and carry out defect detecting test; Same wheel groove milling cutter to be checked is turned four to eight positions around its axis, a defect detecting test is done in each position, each defect detecting test brief energization 0.5-3 second, each energising magnetizing time must not more than 15 seconds, magnetize, after magnetization, by the fluorescence hydromagnetic suspension in described wheel groove milling cutter spray to be checked or immersion step one, afterwards, park after 1-2 minute and carry out defect detecting test;
Step 5, to the wheel groove milling cutter demagnetization after defect detecting test; After flaw detection, demagnetize to the wheel groove milling cutter after defect detecting test, demagnetization current is-1.1 times magnetization current values identical with described magnetization current value;
Step 6, takes off described wheel groove milling cutter, detects a flaw complete.
The invention has the beneficial effects as follows: the present invention is owing to adopting the special strong magnetic holding device of development during fluorescent magnetic particle flaw detection, and the problem solving conventional equipment insoluble wheel groove milling cutter blade circumferential magnetization is coordinated with process, substantially increase the flaw detection degree of accuracy of wheel groove milling cutter, the inherent vice of wheel groove milling cutter is effectively controlled, ensure that the workmanship of wheel groove milling cutter.
Accompanying drawing explanation
Fig. 1 is the front view of wheel groove milling cutter to be checked, and Fig. 2 is the right view of Fig. 1, and Fig. 3 is the front view of strong magnetic holding device body, and Fig. 4 is the left view of Fig. 3.
Embodiment
Embodiment one: as Figure 1-4, the strong magnetic holding device of present embodiment, described strong magnetic holding device comprises strong magnetic holding device body 1 and two conduction copper rods 2, the middle part of the side that two of strong magnetic holding device body 1 are corresponding is each affixed with an one end of conducting electricity copper rod 2, two conduction copper rods 2 are coaxially arranged, and the through processing of axis direction one of edge, the middle part conduction copper rod 2 of the upper surface of strong magnetic holding device body 1 is for placing the magnetic conductive groove 4 of wheel groove milling cutter 3 to be checked.
The material of strong magnetic holding device body 1 is pure iron, mild carbon steel or iron aluminum series alloy, and the carbon content in mild carbon steel is lower than 0.04%, and containing aluminium 6% ~ 16% in iron aluminum series alloy, the carbon content in pure iron is lower than 0.04%.
Embodiment two: composition graphs 4 illustrates, described in present embodiment, the groove width of magnetic conductive groove 4 is 40mm, and the groove depth of magnetic conductive groove 4 is 30mm.Technological requirement can be met.In present embodiment, undocumented technical scheme is identical with embodiment one.
Embodiment three: composition graphs 3 and Fig. 4 illustrate, described in present embodiment, strong magnetic holding device body 1 is square shape, and the length of side of strong magnetic holding device body 1 is 150mm.Technological requirement can be met.In present embodiment, undocumented technical scheme is identical with embodiment two.
Embodiment four: composition graphs 3 and Fig. 4 illustrate, the diameter of copper rod 2 of conducting electricity described in present embodiment is 25mm.Technological requirement can be met.In present embodiment, undocumented technical scheme is identical with embodiment three.
Embodiment five: composition graphs 1-Fig. 4 illustrates, described in present embodiment, method is realized by following steps:
Step one, in defectoscope liquid bath, add the fluorescence hydromagnetic suspension configured, described fluorescence hydromagnetic suspension is added in 1 premium on currency formulated by the defoamer of the sodium nitrite of the emulsifying agent of 5-10 gram, 15-20 gram, 0.5-1 gram and the MPI fluorescent magnetic particles of 0.5-2 gram;
Step 2, selected magnetization current; Magnetization current I(unit A)=10D, D be the maximum outside diameter of wheel groove milling cutter 3 to be checked, unit mm;
Step 3, location install described strong magnetic holding device and wheel groove milling cutter to be checked 3; The magnetic conductive groove 4 of described strong magnetic holding device is arranged upward, the conduction copper rod 2 at strong magnetic holding device two ends is clamped by the head, tail frame chuck of fluorescent magnetic particle inspection machine, the flaw detection position of described wheel groove milling cutter 3 to be checked is put into the magnetic conductive groove 4 of this strong magnetic holding device, prepare magnetization;
Step 4, magnetize wheel groove milling cutter 3 to be checked and carry out defect detecting test; Same wheel groove milling cutter 3 to be checked is turned four to eight positions around its axis, a defect detecting test is done in each position, each defect detecting test brief energization 0.5-3 second, each energising magnetizing time more than 15 seconds, must not magnetize, after magnetization, described wheel groove milling cutter 3 to be checked is sprayed or immerses the fluorescence hydromagnetic suspension in step one, afterwards, park after 1-2 minute and carry out defect detecting test, to obtain data of detecting a flaw more accurately;
Step 5, to the wheel groove milling cutter demagnetization after defect detecting test; After flaw detection, demagnetize to the wheel groove milling cutter after defect detecting test, demagnetization current is-1.1 times magnetization current values identical with described magnetization current value;
Step 6, takes off described wheel groove milling cutter, detects a flaw complete.
Undocumented technical scheme and embodiment one in present embodiment, two, three or four identical.
Claims (1)
1. one kind utilizes strong magnetic holding device to realize wheel groove milling cutter fluorescent magnetic particle flaw detection method, described strong magnetic holding device comprises strong magnetic holding device body (1) and two conductions copper rod (2), the middle part of the side that two of strong magnetic holding device body (1) are corresponding is each affixed with an one end of conducting electricity copper rod (2), two conductions copper rod (2) are coaxially arranged, the through processing of axis direction one at edge conduction copper rod, the middle part (2) of the upper surface of strong magnetic holding device body (1) is for placing the magnetic conductive groove (4) of wheel groove milling cutter to be checked (3), the groove width of described magnetic conductive groove (4) is 40mm, the groove depth of magnetic conductive groove (4) is 30mm, described strong magnetic holding device body (1) is square shape, the length of side of strong magnetic holding device body (1) is 150mm, the diameter of described conduction copper rod (2) is 25mm, it is characterized in that: described method is realized by following steps:
Step one, in defectoscope liquid bath, add the fluorescence hydromagnetic suspension configured, described fluorescence hydromagnetic suspension is added in 1 premium on currency formulated by the defoamer of the sodium nitrite of the emulsifying agent of 5-10 gram, 15-20 gram, 0.5-1 gram and the MPI fluorescent magnetic particles of 0.5-2 gram;
Step 2, selected magnetization current; The maximum outside diameter of the unit of magnetization current I=10D, magnetization current I to be A, D be wheel groove milling cutter to be checked (3), unit mm;
Step 3, location install described strong magnetic holding device and wheel groove milling cutter to be checked (3); The magnetic conductive groove (4) of described strong magnetic holding device is arranged upward, the conduction copper rod (2) at strong magnetic holding device two ends is clamped by the head, tail frame chuck of fluorescent magnetic particle inspection machine, the flaw detection position of described wheel groove milling cutter to be checked (3) is put into the magnetic conductive groove (4) of this strong magnetic holding device, prepare magnetization;
Step 4, magnetize wheel groove milling cutter to be checked (3) and carry out defect detecting test; Same wheel groove milling cutter to be checked (3) is turned four to eight positions around its axis, a defect detecting test is done in each position, each defect detecting test brief energization 0.5-3 second, each energising magnetizing time must not more than 15 seconds, magnetize, after magnetization, by the fluorescence hydromagnetic suspension in described wheel groove milling cutter to be checked (3) spray or immersion step one, afterwards, park after 1-2 minute and carry out defect detecting test;
Step 5, to the wheel groove milling cutter demagnetization after defect detecting test; After flaw detection, demagnetize to the wheel groove milling cutter after defect detecting test, demagnetization current is ~ 1.1 times magnetization current values identical with described magnetization current value;
Step 6, takes off described wheel groove milling cutter, detects a flaw complete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210218205.8A CN102759566B (en) | 2012-06-28 | 2012-06-28 | Strong-magnetism clamp and method for realizing fluorescent magnetic particle flaw detection of wheel trough milling cutter by using same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210218205.8A CN102759566B (en) | 2012-06-28 | 2012-06-28 | Strong-magnetism clamp and method for realizing fluorescent magnetic particle flaw detection of wheel trough milling cutter by using same |
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| Publication Number | Publication Date |
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| CN102759566A CN102759566A (en) | 2012-10-31 |
| CN102759566B true CN102759566B (en) | 2015-02-18 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2359694Y (en) * | 1999-01-05 | 2000-01-19 | 东风汽车公司 | Non-electrical-contact type compound magnetizing magnaflux inspection machine |
| JP2007205826A (en) * | 2006-02-01 | 2007-08-16 | Hitachi Building Systems Co Ltd | Wire rope flaw detector |
| CN201655469U (en) * | 2010-03-11 | 2010-11-24 | 中国科学院宁波材料技术与工程研究所 | Magnetizing device |
| CN102297892A (en) * | 2011-07-19 | 2011-12-28 | 盐城红日检测装备有限公司 | Semi-automatic detection apparatus for fluorescent magnetic powder on bolts |
-
2012
- 2012-06-28 CN CN201210218205.8A patent/CN102759566B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2359694Y (en) * | 1999-01-05 | 2000-01-19 | 东风汽车公司 | Non-electrical-contact type compound magnetizing magnaflux inspection machine |
| JP2007205826A (en) * | 2006-02-01 | 2007-08-16 | Hitachi Building Systems Co Ltd | Wire rope flaw detector |
| CN201655469U (en) * | 2010-03-11 | 2010-11-24 | 中国科学院宁波材料技术与工程研究所 | Magnetizing device |
| CN102297892A (en) * | 2011-07-19 | 2011-12-28 | 盐城红日检测装备有限公司 | Semi-automatic detection apparatus for fluorescent magnetic powder on bolts |
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| CN102759566A (en) | 2012-10-31 |
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Effective date of registration: 20221230 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Patentee after: HARBIN TURBINE Co.,Ltd. Patentee after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Patentee before: HARBIN TURBINE Co.,Ltd. |
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