CN102866108B - Frictional disk pair test apparatus capable of adjusting magnetic field and method - Google Patents
Frictional disk pair test apparatus capable of adjusting magnetic field and method Download PDFInfo
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- CN102866108B CN102866108B CN201210320150.1A CN201210320150A CN102866108B CN 102866108 B CN102866108 B CN 102866108B CN 201210320150 A CN201210320150 A CN 201210320150A CN 102866108 B CN102866108 B CN 102866108B
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- ring specimen
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Abstract
The invention relates to a frictional disk pair test apparatus capable of adjusting a magnetic field and a method, and is suitable for evaluating tribological properties of magnetic liquid under the action of the magnetic field. The apparatus comprises an oil cup seat, annular samples and a pin sample, wherein annular grooves are formed on the bottom faces, of the annular samples, contacted with the oil cup seat, annular permanent magnets adhered onto the bottom faces of the annular samples are arranged in the annular grooves, and a low-carbon steel column is arranged inside the pin sample. The annular permanent magnets are adhered onto the bottom faces of the annular samples according to the experimental requirements so as to generate uniform magnetic fields between the surfaces of the annular samples and the contact faces of the annular permanent magnets, and uniform and adjustable magnetic fields can be generated between the annular samples and the contact point of the pin sample by changing the thicknesses of the annular permanent magnets and adjusting the length of the low-carbon steel column in the pin sample, so that the testing of the tribological properties of the magnetic liquid under different magnetic field strengths is realized, and furthermore, the frictional wear properties of the magnetic liquid are comprehensively and precisely evaluated. Meanwhile, the frictional disk pair test apparatus capable of adjusting the magnetic field and the method are also applicable to the evaluating of the tribological properties under other lubricating agent magnetic fields.
Description
Technical field
The secondary test unit of frictional disk and the method that the present invention relates to a kind of controlling magnetic field, be particularly useful for evaluating magnetic fields magnetic fluid friction performance, is also applicable to evaluate the tribological property of other lubricants under magnetic fields.
Background technology
At present, magnetic liquid has been applied to the fields such as bearing, damper, the sticky gearing of liquid, and in Practical Project field, no matter magnetic liquid is to apply in mechanical devices as core component, or as lubricated wear-resistant reagent, its wear resistance is all an important parameter index.
The size of magnetic field intensity has a great impact the greasy property of magnetic liquid, the whether even evaluation that also can directly have influence on magnetic liquid tribological property in friction surface magnetic field, but special-purpose frictional wear test device also be there is no for measuring the wear resistance of magnetic fields magnetic liquid at present.By existing bibliographical information, can be understood, the magnetic liquid material friction wear properties testing experiment carrying out at present has following deficiency: 1, existing friction wear testing machine only can, without under magnetic field condition, magnetic liquid tribological property being evaluated, can not reflect the friction and wear behavior of magnetic liquid comprehensively; 2, some improved friction and wear test equipment are difficult to produce uniform magnetic field at friction surface, and the range of adjustment of magnitude of field intensity is large not.
Summary of the invention
Technical matters: object of the present invention, for the problem existing in prior art, provides the secondary test unit of a kind of frictional disk simple in structure, that can reflect friction and wear behavior, controlling magnetic field and method,
Technical scheme:
The secondary test unit of frictional disk of controlling magnetic field of the present invention, comprise oil cup seat, be located at the ring specimen on oil cup seat, ring specimen is provided with the pin sample that is placed in pin chuck, the bottom surface that described ring specimen contacts with oil cup seat has the annular groove that the degree of depth is 5mm, in annular groove, be provided with and be attached to the annular permanent magnet that on ring specimen bottom surface, thickness h is 1 ~ 5mm, described pin sample inside is provided with the low-carbon (LC) steel column that length H is 4mm, 6mm or 7mm.
Described oil cup seat is made by 1Cr18NiTi stainless steel material; Described pin sample is made by beryllium-bronze material.
Utilize said apparatus to realize the secondary test method of frictional disk of controlling magnetic field: the annular permanent magnet that is 1 ~ 5mm by thickness h according to requirement of experiment is attached to ring specimen bottom surface, makes to produce uniform magnetic field between ring specimen upper surface and pin sample contact point;
Under condition in low-carbon (LC) steel column is not placed in pin sample blind hole, with the different annular permanent magnet of thickness h, the magnetic field intensity between the contact point of adjusting ring specimen and pin sample;
Under the thickness h permanence condition of annular permanent magnet, adjust the length H that is located at the low-carbon (LC) steel column in pin sample, regulate the magnetic field intensity between ring specimen and pin sample contact point;
The length H that is located at the low-carbon (LC) steel column in pin sample by changing annular permanent magnet thickness h and adjustment can produce uniform magnetic field between ring specimen and pin sample contact point.
Beneficial effect: because the size of magnetic field intensity has a great impact the greasy property of magnetic liquid, so the whether even evaluation that also can directly have influence on magnetic liquid tribological property in friction surface magnetic field.The present invention adopts permanent magnet, pin sample and ring specimen, be placed in the oil cup seat of frictional testing machine, can between ring specimen and pin sample contact point, produce an even adjustable magnetic field, thereby efficiently solve, in evaluation magnetic liquid tribological property process magnetic field is difficult to apply and the problem of Magnetic field inhomogeneity.Only need to regulate the length of low-carbon (LC) steel column or the thickness of annular permanent magnet can realize the adjusting in magnetic field.Its apparatus structure is simple, and method is easy, easy to operate, can effectively reflect friction and wear behavior, and the range of adjustment of magnitude of field intensity is large, has in the art practicality widely.
Accompanying drawing explanation
Fig. 1 is the secondary test unit structural drawing of the frictional disk of controlling magnetic field of the present invention.
In figure: 1-oil cup seat, 2-annular permanent magnet, 3-ring specimen, 4-sells sample, 5-low-carbon (LC) steel column.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are further described:
The secondary test unit of frictional disk of the controlling magnetic field of invention, mainly consists of oil cup seat 1, annular permanent magnet 2, ring specimen 3, pin sample 4, low-carbon (LC) steel column 5.Ring specimen 3 is located on oil cup seat 1, and oil cup seat 1 is made by 1Cr18NiTi stainless steel material.Ring specimen 3 is provided with the pin sample 4 that is placed in pin chuck, and pin sample 4 is made by beryllium-bronze material, and pin sample 4 is arranged in pin chuck, and oil cup seat 1 is connected on the stationary shaft of four-ball tester.The bottom surface that described ring specimen 3 contacts with oil cup seat 1 has the annular groove that the degree of depth is 5mm, in annular groove, be provided with and be attached to the annular permanent magnet 2 that on ring specimen 3 bottom surfaces, thickness h is 1 ~ 5mm, described pin sample 4 inside are provided with the low-carbon (LC) steel column 5 that length H is 4mm, 6mm or 7mm.
The secondary test method of the frictional disk of controlling magnetic field of the present invention: the annular permanent magnet 2 that is 1 ~ 5mm by thickness h according to requirement of experiment is attached to ring specimen 3 bottom surfaces, makes to produce uniform magnetic field on the contact point of ring specimen 3 surfaces and pin sample 4;
Under condition in low-carbon (LC) steel column 5 is not placed in pin sample 4 blind holes, with the different annular permanent magnet 2 of thickness h, the magnetic field intensity between the contact point of adjusting ring specimen 3 and pin sample 4; When the thickness of annular permanent magnet 2 is respectively 1mm, 2mm, 3mm, 4mm, during 5mm, the magnetic field size between the contact point of ring specimen 3 and pin sample 4 is respectively 10mT, 19mT, 30mT, 38mT, 47mT;
Under the thickness h permanence condition of annular permanent magnet 2, adjust the length H that is located at the low-carbon (LC) steel column 5 in pin sample 4, the magnetic field intensity between the contact point of adjusting ring specimen 3 and pin sample 4.The ring-shaped magnet that the thickness of take is 2mm as h is example, at the intubating length H of carbon steel post 5, is respectively 4mm, and when 6mm and 7mm, the magnetic field size between the contact point of ring specimen 3 and pin sample 4 is respectively 22mT, 24mT, 26mT;
By changing the method for the insertion depth of annular permanent magnet 2 thickness and pin sample 4 middle low carbon steel posts 5, can between ring specimen 3 and pin sample 4 contact points, produce evenly adjustable magnetic field.
Claims (1)
1. the secondary test unit of the frictional disk of a controlling magnetic field, comprise oil cup seat (1), be located at the ring specimen (3) on oil cup seat (1), ring specimen (3) is provided with the pin sample (4) that is placed in pin chuck, it is characterized in that: the bottom surface that described ring specimen (3) contacts with oil cup seat (1) has the annular groove that the degree of depth is 5mm, in annular groove, be provided with and be attached to the annular permanent magnet (2) that on ring specimen (3) bottom surface, thickness h is 1 ~ 5mm, described pin sample (4) inside is provided with the low-carbon (LC) steel column (5) that length H is 4mm, 6mm or 7mm; Described oil cup seat (1) is made by 1Cr18NiTi stainless steel material; Described pin sample (4) is made by beryllium-bronze material.
2. the secondary test method of frictional disk of utilizing the controlling magnetic field that device is realized described in claim 1, it is characterized in that: the annular permanent magnet that is 1 ~ 5mm by thickness h according to requirement of experiment (2) is attached to ring specimen (3) bottom surface, make to produce uniform magnetic field between ring specimen (3) upper surface and pin sample (4) contact point;
Under condition in low-carbon (LC) steel column (5) is not placed in pin sample (4) blind hole, with the different annular permanent magnet (2) of thickness h, the magnetic field intensity between the contact point of adjusting ring specimen (3) and pin sample (4);
Under the thickness h permanence condition of annular permanent magnet (2), adjust the length H that is located at the low-carbon (LC) steel column (5) in pin sample (4), regulate the magnetic field intensity between ring specimen (3) and pin sample (4) contact point;
The length H that is located at the low-carbon (LC) steel column (5) in pin sample (4) by changing annular permanent magnet (2) thickness h and adjustment can produce an even adjustable magnetic field between ring specimen (3) and pin sample (4) contact point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320150.1A CN102866108B (en) | 2012-09-03 | 2012-09-03 | Frictional disk pair test apparatus capable of adjusting magnetic field and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320150.1A CN102866108B (en) | 2012-09-03 | 2012-09-03 | Frictional disk pair test apparatus capable of adjusting magnetic field and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102866108A CN102866108A (en) | 2013-01-09 |
| CN102866108B true CN102866108B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210320150.1A Expired - Fee Related CN102866108B (en) | 2012-09-03 | 2012-09-03 | Frictional disk pair test apparatus capable of adjusting magnetic field and method |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101068A (en) * | 1985-04-01 | 1987-01-24 | 索尼公司 | Magnetic devices |
| US6448772B1 (en) * | 2000-10-06 | 2002-09-10 | Sumitomo Special Metals Co., Ltd. | Magnetic field adjusting apparatus, magnetic field adjusting method and recording medium |
| CN201335830Y (en) * | 2008-12-29 | 2009-10-28 | 济南试金集团有限公司 | Pin disc friction pair device for four-ball machine |
| CN201464312U (en) * | 2009-03-25 | 2010-05-12 | 河南科技大学 | Magnetic field control device for friction and abrasion test |
| CN202770752U (en) * | 2012-09-03 | 2013-03-06 | 中国矿业大学 | Magnetic-field-adjustable friction disk pair testing device |
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2012
- 2012-09-03 CN CN201210320150.1A patent/CN102866108B/en not_active Expired - Fee Related
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| CN102866108A (en) | 2013-01-09 |
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