CN100494967C - Reciprocating high-temperature high-load friction wear test method and apparatus - Google Patents
Reciprocating high-temperature high-load friction wear test method and apparatus Download PDFInfo
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- CN100494967C CN100494967C CNB2005101368168A CN200510136816A CN100494967C CN 100494967 C CN100494967 C CN 100494967C CN B2005101368168 A CNB2005101368168 A CN B2005101368168A CN 200510136816 A CN200510136816 A CN 200510136816A CN 100494967 C CN100494967 C CN 100494967C
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Abstract
The invention discloses a reciprocal high-temperature high-load friction and abrasion test method and equipment in the friction and abrasion testing technique domain, which is characterized by the following: the reciprocal moving structure, lower sample bottom support structure and upper sample vertical location structure adapt standard rolling bearing to realize the dynamic part measurement of friction coefficient, which improves the accuracy greatly; the load is constructed precisely to exclude the interference of sample moving structure friction force by static friction; the standard bearing improves the bearing ability, whose maximum load of nominal construction reaches 10000N to reduce the quality of moving structure and reciprocal inertia force and make the system operate stably at 800r/min; because of the orientation heating and thermal action of sample, the sample gains higher temperature and the bottom temperature remains low; the rolling shaft supports the bottom of sample bearing floor to keep enough space for cooling and lubricating through lubrication oil.
Description
Technical field
The invention belongs to the friction and wear test technical field.Relate to a kind of new reciprocating high-temperature high-load friction wear test method and equipment.
Background technology
The present situation of present reciprocating type friction wear testing machine is: (1) reciprocator adopts sliding type to locate and lead mostly, and problem is that friction force is big, the life-span of friction pair is short; The local friction that has is secondary to adopt ball carrying, the dull and stereotyped retainer structure of nylon, but between ball and following specimen holder floor for point contacts, the very difficult solution of the fatigue problem during top load, the following specimen holder life-span is very short.Life-span, the reliability of work, accuracy of experimental results that these have all influenced testing machine have limited the scope of maximum load.(2) going up specimen holder also is to adopt sliding type location and guiding in the operation of vertical direction, because motion amplitude is very little, and static friction is bigger, and therefore the accuracy to load has bigger influence; And because the fatigue wear problem that fine motion brings has also directly influenced the life-span and the accuracy of experimental results of friction pair.(3) to adopting the method for the whole heating of motion, because the difficulty of reciprocator's motion guide part selection has limited maximum heating temperature; To adopting the method for sample bottom spot heating, because its landing load supporting mechanism is sliding contact, bring heat radiation and many problems such as lubricated, test temperature is generally lower, below 150 ℃.
Summary of the invention
Purpose of the present invention just provides reciprocating high-temperature high-load friction wear test method and the equipment that a kind of high temperature, top load and static friction are disturbed.
Design of the present invention is, motion positions mechanism all adopts the standard rolling bearing, and benefit is that in the past sliding friction is changed into rolling friction; Friction factor is measured at moving part; Directed heating of sample and insulation; Adopt circulating lubricating oil to realize cooling and lubricated simultaneously; Be implemented under the higher temperature and apply top load, the reliability height of test findings, good stability.
Solution of the present invention is: by bearing seat 1, excentric shaft 2, connecting rod 3, fixed head 4, slide block 5, joint bindiny mechanism 6, friction force sensor 7, down specimen holder 8, unidirectional heating furnace 11, carrying slide plate 12, counterweight 13, go up specimen holder 14, go up specimen holder guide bearing 15, lever 16, support 17, first oil supply hole 18, carrying slide plate spring bearing 19, oil outlet 20, center brace panel 21, slider guide bearing 22, second oil supply hole 23 constitute; Excentric shaft 2 is fixed in support 17 by bearing seat 1, and motor and excentric shaft are direct-connected; Connecting rod 3 one ends are fixed on the excentric shaft 2, the other end links to each other with slide block 5, by slider guide bearing 22 location, slide block 5 links to each other with carrying slide plate 12 by a pair of joint bindiny mechanism 6 slide block 5 at upper and lower, forward and backward four sides, and bolt friction force sensor 7 between the syndeton of a pair of joint.Carrying is close to the two support bearings 19 of being disbursed from the cost and expenses below the slide plate 12 and is fixed on the center brace panel 21, be close to unidirectional heating furnace 11 above the carrying slide plate 12,4 faces all around of last specimen holder 14 are close to guide bearing 15, and counterweight 13 hangs on the lever 16, and lever 16 is directly installed on the support 17; Lubricated and cold oil first oil supply hole 18, second oil supply hole 23 and oil outlet 20 and penetrate support 17 on center brace panel 21.
Use the reciprocating high-temperature high-load friction wear testing equipment to carry out the method for friction-wear test, install sample 9 in last specimen holder 14, sample 10 is in following specimen holder 8 under installing; Add counterweight 13 on lever 16, the load that applies is 10～10000N; Inject lubricated and cold oil by first oil supply hole 18 and second oil supply hole 23, flow out, circulate by oil outlet 20; Connect heating furnace 11 power supplys, heating-up temperature is 15～300 ℃; Connect motor power, equipment operation, following sample 10 to-and-fro movement rotating speeds 5～1500rp/min.
Major advantage of the present invention is:
1, adopt reciprocating mechanism, down sample backplanes support mechanism, go up sample movement in vertical direction detent mechanism and all adopt the standard rolling bearing, benefit is that in the past sliding friction is changed into rolling friction, 1～2 order of magnitude of friction factor reduction;
2, the realization friction factor is measured at moving part, and its accuracy improves greatly;
3, load applies accurately, has got rid of the interference of static friction to last sample motion friction force, has improved the accuracy that load applies;
4, the friction pair of standard rolling bearing adopts the manufacturing of high-quality bearing steel, improves load-bearing capacity, and the specified maximum load that applies can reach 10000N, is much higher than similar testing machine; At utmost reduce the quality of motion, reduce reciprocating inertial force, make system's still smooth operation when 800r/min;
5, because heating of the orientation of sample and insulation effect, when sample obtains higher temperature, bottom temp is lower, and particularly roller bearings can keep enough spaces in following sample load carrying floor bottom, adopts circulating lubricating oil to realize cooling and lubricated simultaneously.
6, can under higher temperature, apply top load, the reliability height of test findings, good stability.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural drawing of the present invention.
Embodiment
1, the following sample 10 of 10mm * 8mm * 100mm is installed to down in the specimen holder 8.
2, the last sample 9 of 15mm * 10mm * 10mm is installed in the specimen holder 14.
3, lift lever 16, the anchor clamps 14 that install sample are packed into from the top, up to contacting with following sample.
4, put down lever 16, selecting quality is the counterweight 13 of 200N, is suspended to the reinforcing end of lever 16.
5, the ratio of lever is 7:1, and being applied to this moment up and down, the load between the sample is 1400N.
6, connect the 220V power supply, well heater 11 begins heating, connects the oil pump power supply simultaneously, and lubricated and cold oil injects by hole first oil supply hole 18 and second oil supply hole 23, is flowed out by oil outlet 20, circulates.Setting heating-up temperature is 150 ℃, and oil pump flow is 2 liters of per minutes.
7, energized, 2 rotations of motor-driven excentric shaft, drivening rod 3 is converted into to-and-fro movement rotatablely moving;
8, connecting rod 3 drives slide blocks 5, and by slider guide bearing 22 location, every is 500N by 4 rated loads the rolling radial bearing is formed slide block 5, evenly distributes totally 16 along 4 jiaos at upper and lower, forward and backward four sides.
9, slider guide bearing 22 bears the side-thrust that excentric shaft is applied to connecting rod, and it is a pair of that main thrust is delivered to joint bindiny mechanism 6, and it is the oscillating bearing of 1000N that the joint syndeton adopts amount load.
10, joint bindiny mechanism 6 realizes flexibly connecting between slide block 5 and the carrying slide plate 12.
11, be friction force sensor 7 between the syndeton of a pair of joint, amount load is 500N, allows overload 50%.
12, carrying is the two support bearings 19 of being disbursed from the cost and expenses below the slide plate 12, bears the load of whole vertical direction.Whenever the single-row radial ball bearing that to show 5 rated loads be 1000N constitutes.
13, the carrying slide plate 12 above be unidirectional heating furnace 11, the rated power of heating furnace is 200W.To 8 heating of the following specimen holder above it, following sample 10 is fixed in the following style anchor clamps 8.
14, going up sample 9 is fixed in the specimen holder 14.Last specimen holder 14 is by guide bearing 15 (4 faces all around) guiding, and every is 500N by 4 rated loads single-row radial ball bearing constitutes, and evenly distributes totally 16 along 4 jiaos.
Claims (2)
1. reciprocating high-temperature high-load friction wear testing equipment, it is characterized in that, by bearing seat (1), excentric shaft (2), connecting rod (3), fixed head (4), slide block (5), joint bindiny mechanism (6), friction force sensor (7), following specimen holder (8), unidirectional heating furnace (11), carrying slide plate (12), counterweight (13), last specimen holder (14), last specimen holder guide bearing (15), lever (16), support (17), first oil supply hole (18), carrying slide plate spring bearing (19), oil outlet (20), center brace panel (21), slider guide bearing (22), second oil supply hole (23) constitutes; Excentric shaft (2) is fixed in support (17) by bearing seat (1), and motor and excentric shaft are direct-connected; Connecting rod (3) one ends are fixed on the excentric shaft (2), the other end links to each other with slide block (5), slide block (5) is located by slider guide bearing (22) at upper and lower, forward and backward four sides, slide block (5) links to each other with carrying slide plate (12) by a pair of joint bindiny mechanism (6), and bolt friction force sensor (7) between the syndeton of a pair of joint; Being close to the two support bearings (19) of being disbursed from the cost and expenses below carrying slide plate (12) is fixed on the center brace panel (21), be close to unidirectional heating furnace (11) above the carrying slide plate (12), 4 faces all around of last specimen holder (14) are close to guide bearing (15), counterweight (13) hangs on the lever (16), and lever (16) is directly installed on the support (17); First oil supply hole (18), second oil supply hole (23) and oil outlet (20) are arranged on the center brace panel (21), and penetrate support (17).
2. use the described reciprocating high-temperature high-load friction wear testing equipment of claim 1 to carry out the method for friction-wear test, it is characterized in that, install sample (9) in last specimen holder (14), sample (10) is in following specimen holder (8) under installing; Go up interpolation counterweight (13) toward lever (16), the load that applies is 10～10000N; Inject lubricated and cold oil by first oil supply hole (18) and second oil supply hole (23), flow out, circulate by oil outlet (20); Connect heating furnace (11) power supply, heating-up temperature is 15～300 ℃; Connect motor power, equipment operation, following sample (10) to-and-fro movement rotating speed 5～1500rp/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101368168A CN100494967C (en) | 2005-12-31 | 2005-12-31 | Reciprocating high-temperature high-load friction wear test method and apparatus |
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| CNB2005101368168A CN100494967C (en) | 2005-12-31 | 2005-12-31 | Reciprocating high-temperature high-load friction wear test method and apparatus |
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| CN1789964A CN1789964A (en) | 2006-06-21 |
| CN100494967C true CN100494967C (en) | 2009-06-03 |
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| US7730761B2 (en) * | 2006-06-16 | 2010-06-08 | Rohm And Haas Company | Producing stress on surfaces |
| CN101311722B (en) * | 2007-05-22 | 2011-05-11 | 中国科学院理化技术研究所 | High vacuum environment rotary part heating and cooling apparatus and method |
| CN101246103B (en) * | 2008-03-24 | 2010-09-29 | 洛阳市谱瑞慷达耐热测试设备有限公司 | Thermal state wearing resistance tester and testing method thereof |
| CN102175599A (en) * | 2011-02-21 | 2011-09-07 | 合肥工业大学 | High-frequency high-specific pressure long-stroke temperature-controllable reciprocating friction test device |
| CN102288502B (en) * | 2011-05-13 | 2013-02-13 | 中国矿业大学 | Variable-load cylinder-sleeve piston-ring frictional wear testing device |
| CN102435519A (en) * | 2011-09-21 | 2012-05-02 | 镇江忆诺唯记忆合金有限公司 | Method for raising surface friction and wear properties by changing loads |
| CN102590003A (en) * | 2012-03-05 | 2012-07-18 | 青岛科技大学 | Rubber dynamic friction-wear detection method |
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