CN106483032A - A kind of realize the break-in method that water lubrication joins secondary ultra-low friction - Google Patents
A kind of realize the break-in method that water lubrication joins secondary ultra-low friction Download PDFInfo
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- CN106483032A CN106483032A CN201610829025.1A CN201610829025A CN106483032A CN 106483032 A CN106483032 A CN 106483032A CN 201610829025 A CN201610829025 A CN 201610829025A CN 106483032 A CN106483032 A CN 106483032A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
Abstract
The invention discloses a kind of realize the break-in method that water lubrication joins secondary ultra-low friction, concretely comprise the following steps：(1) actual operating mode according to parts, sets same load and speed carries out initially pre- break-in, break-in 300 seconds under the conditions of water lubrication；Then unloading is shut down static pieces and is separated, the abrasive particle producing in pre- running in stage between exclusion frictional interface；(2) continue in actual operating mode condition break-in 300 seconds；Then under 23 times of actual condition load-up conditions, overload break-in 600 seconds；Finally continue to increase load, reach 45 times of actual condition load, continue overload break-in 600 seconds；3) unloading is shut down, and is cleaned by ultrasonic specimen surface, and wash chamber, more renews water, excludes the impact of wear particle completely；The present invention is different from traditional underloading break-in method, substantially reduces break-in period hence it is evident that improving parts to use work efficiency, and is capable of water lubrication and joins the ultra-low friction state that secondary coefficient of friction is less than 0.01.
Description
Technical field
The present invention relates to a kind of realize the break-in method that water lubrication joins secondary ultra-low friction, build different from conventional friction theory
Break-in method under view underloading, the present invention substantially reduces break-in period using overload break-in method, and interface after break-in
Between achieve coefficient of friction be less than 0.01 ultra-low friction state.
Background technology
Water security is pollution-free, wide material sources, specific heat are greatly that the mankind wish to replace the optimal lubricant medium of conventional lubrication oil, energy
The enough pressure effectively alleviating energy resources crisis and environmental pollution, meets the strategic requirement of sustainable development, at present nuclear power,
The key areas such as ship are widely applied, most representative with key components and partss such as water lubriucated bearing and sealings.However, water
Low viscosity greatly reduce lubrication area film forming ability be degrading interface friction abrasional behavior, become restricting current water lubrication skill
The bottleneck of art development.Promote to occur in that multiple improving environment and method：The reshaping technology such as surface texture/micromorphology, radiation hardening/
Water base lubricant synthesis such as the surface modification treatment such as hydrophobe, interpolation special solution/granule etc., and obtained successful Application；But
Receive Financial cost, the restriction of the manufacture factor such as complexity and actual working environment, greatly limit range of application.Cause
This, proposing a kind of simple and effective method improving interface friction performance just becomes in the weight promoting water lubrication technology application
Weight.
Period of adjustment be friction pair initial operating stage must through wear stage, determine the working condition of stable wear stage.
It was verified that good break-in can effectively improve normal working life and the reliability of friction pair.Conventional friction theory is recognized
For friction pair initial operating stage load can not be excessive, otherwise by major injury surface, causes premature wear to lose efficacy, rational break-in
Should be progressively to load and accelerate, and require the break-in final stage condition will be close to applying working condition.The break-in side being formed at present
Method, technique are substantially based on this theoretic knowledge, serve to improving the interface behavior under dry friction and Oil Lubrication Condition
Important function.Although with regard to the research course of existing nearly 80 years of period of adjustment, the friction in the period of adjustment for the friction pair is ground
Damage mechanism still indefinite so far, therefore traditional theory understanding should ratio more conservative, fully do not excavate out break-in friction rank
The important value of section.Further, since the special materialization effect of aqueous medium, water lubrication technology apply and only has 30 years go through
Journey, the therefore exploration with regard to the water lubrication friction pair period of adjustment and research are just more backward；Realize water profit by controlling the period of adjustment
The ultra-low friction that slide fit pair coefficient of friction is less than 0.01, the related invention patent more do not published at present is if it is possible to reality
Existing, the bottleneck solving the abrasion of water lubrication interface is had important practical significance.
Content of the invention
In order to make full use of the important value of break-in friction phase, break the cognitive range of gearing friction, the present invention's
Purpose be to provide a kind of realize the break-in method that water lubrication joins secondary ultra-low friction, realize friction pair and rub under the conditions of water lubrication
The ultra-low friction state that coefficient is less than 0.01.
To achieve these goals, the technical solution used in the present invention is：
A kind of realize the break-in method that water lubrication joins secondary ultra-low friction, be three step break-in methods, including pre- under operating condition
Acceleration break-in under break-in, heavy duty and the new water of cleaning replacement, total break-in period is 1800 seconds, concretely comprises the following steps：
Step 1：Quickly pre- break-in：According to the actual operating mode of parts, set same load and speed is carried out initially
Pre- break-in, break-in 300 seconds under the conditions of water lubrication is so that interface reaches the initial stage coupling adapting to actual operating mode；Then, unload
Carry and shut down static pieces separation, the abrasive particle producing in pre- running in stage between exclusion frictional interface, this step is changed without washed samples
New water；
Step 2：Accelerate break-in：Continue in actual operating mode condition break-in 300 seconds, adapt to the basis of this operating mode at interface
On, realize the quick removal of material by way of being stepped up load；Then, under 2-3 times of actual condition load-up condition, root
Determine concrete multiple, overload break-in 600 seconds according to the comprcssive strength of friction pair material；Finally, continue to increase load, reach actual work
4-5 times of working condition loading, continues overload break-in 600 seconds, to be rapidly achieved the coupling of pattern and shape between interface；
Step 3：Clean, more renew water：Unloading is shut down, washed samples surface, is taken ultrasonic clear according to specimen size as far as possible
Wash, the old water of within the chamber of draining, more renew water, and wash chamber, exclude the impact of wear particle completely.
The present invention is different from traditional break-in method or technique, break-in under overload conditions, substantially reduces break-in period, carries
The high overall service efficiency of parts, and the friction, lubrication performance at water lubrication interface can be effectively improved, it is capable of water
Lubrication joins the ultra-low friction state that secondary coefficient of friction is less than 0.01, and the therefore present invention has substantive distinguishing features and marked improvement.
Specific embodiment
With reference to specific embodiment, the present invention is described in further details.
The hard alloy mechanical sealing ring of internal diameter 38mm, external diameter 54mm, pairing material is internal diameter 41.5, the stone of external diameter 50.5
Black mechanical seal ring, for 100N, 200r/min operating condition illustrates three step break-in steps, in order to test multiple physics ginsengs
Number, is easy to the understanding to this break-in method, and experiment is carried out in PLINT standard friction abrasion tester, comprised the following steps that：
(1) quickly pre- break-in：Under 100N, 200r/min actual operating mode, break-in 300 seconds, purpose makes interface reach
To the initial stage coupling adapting to this operating mode, then unloading is shut down dynamic and static ring and is separated, and generates in pre- running in stage between exclusion frictional interface
Abrasive particle；
(2) accelerate break-in：Run 1500 seconds under the conditions of rotating speed 200r/min, run 300 seconds respectively under 100N load,
600 seconds are run it is therefore an objective to realize material by way of being gradually increased load under descending 600 seconds of 300N load and 500N load
Quick removal, to be rapidly achieved the coupling of pattern and shape between interface；
(3) clean, more renew water：Unloading is shut down, and ultrasonic cleaning is taken according to specimen size in washed samples surface as far as possible,
The old water of within the chamber of draining, and wash chamber, more renew water, exclude the impact of wear particle completely；
(4) actual condition runs：After above-mentioned break-in terminates, run 2 hours under 100N, 200r/min actual condition, lead to
Cross code test machine and record coefficient of friction as little as 0.003 kept stable, graphite, hard alloy piece are strictly dried
Dry, before and after finding friction by weighing, quality is held essentially constant, and illustrates that friction pair interface is separated by moisture film, is in elastic fluid
Hydrodynamic lubrication state；
(5) Surface testing：Using three-coordinates measuring machine test surfaces macroscopic view percent ripple, find to notice this three steps break-in
Afterwards, surface waviness is obviously reduced, and the two external wavinesses consistent registration of distribution is higher, and other break-in mode registrations are relatively
Difference, all break-in mode surface microscopic topographics do not show particular law simultaneously.
Claims (1)
1. a kind of realize water lubrication join secondary ultra-low friction break-in method it is characterised in that：For three step break-in methods, including running work
Acceleration break-in under pre- break-in under condition, heavy duty and the new water of cleaning replacement, total break-in period is 1800 seconds, and concrete steps are such as
Under：
Step 1：Quickly pre- break-in：According to the actual operating mode of parts, set same load and speed carries out initial pre-grinding
Close, break-in 300 seconds under the conditions of water lubrication is so that interface reaches the initial stage coupling adapting to actual operating mode；Then, unloading stops
Machine static pieces separate, the abrasive particle producing in pre- running in stage between exclusion frictional interface, and this step more renews water without washed samples；
Step 2：Accelerate break-in：Continue in actual operating mode condition break-in 300 seconds, on the basis of interface adapts to this operating mode,
The quick removal of material is realized by way of being stepped up load；Then, under 2-3 times of actual condition load-up condition, according to
The comprcssive strength of friction pair material determines concrete multiple, overload break-in 600 seconds；Finally, continue to increase load, reach actual condition
4-5 times of load, continues overload break-in 600 seconds, to be rapidly achieved the coupling of pattern and shape between interface；
Step 3：Clean, more renew water：Unloading is shut down, and ultrasonic cleaning is taken according to specimen size in washed samples surface as far as possible, row
Fall the old water of within the chamber, and wash chamber, more renew water, exclude the impact of wear particle completely.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610829025.1A CN106483032A (en) | 2016-09-18 | 2016-09-18 | A kind of realize the break-in method that water lubrication joins secondary ultra-low friction |
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| CN201610829025.1A CN106483032A (en) | 2016-09-18 | 2016-09-18 | A kind of realize the break-in method that water lubrication joins secondary ultra-low friction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842706A (en) * | 2017-09-22 | 2018-03-27 | 齐鲁工业大学 | A kind of break-in method of coefficient of friction between reduction metallic rubbing pairs |
| CN112413129A (en) * | 2020-11-10 | 2021-02-26 | 上海电气凯士比核电泵阀有限公司 | Method for preparing water-lubricated mechanical sealing surface in ultra-smooth state |
| CN113484176A (en) * | 2021-06-23 | 2021-10-08 | 重庆长安汽车股份有限公司 | Oil seal reliability verification method |
| CN114369806A (en) * | 2022-01-14 | 2022-04-19 | 深圳大学 | Method for realizing near-zero running-in ultralow friction |
Citations (2)
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| CN102998254A (en) * | 2012-11-20 | 2013-03-27 | 清华大学 | Micro friction force measuring device |
| CN105866024A (en) * | 2016-05-20 | 2016-08-17 | 武汉理工大学 | Dynamic friction coefficient determination device of rock mass ultra low friction effect under action of osmotic pressure |
-
2016
- 2016-09-18 CN CN201610829025.1A patent/CN106483032A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998254A (en) * | 2012-11-20 | 2013-03-27 | 清华大学 | Micro friction force measuring device |
| CN105866024A (en) * | 2016-05-20 | 2016-08-17 | 武汉理工大学 | Dynamic friction coefficient determination device of rock mass ultra low friction effect under action of osmotic pressure |
Non-Patent Citations (1)
| Title |
|---|
| FEI GUO ET AL.: "Ultralow friction between cemented carbide and graphite in water using three-step ring-on-ring friction test", 《WEAR》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842706A (en) * | 2017-09-22 | 2018-03-27 | 齐鲁工业大学 | A kind of break-in method of coefficient of friction between reduction metallic rubbing pairs |
| CN107842706B (en) * | 2017-09-22 | 2019-12-10 | 齐鲁工业大学 | running-in method for reducing friction coefficient between metal friction pairs |
| CN112413129A (en) * | 2020-11-10 | 2021-02-26 | 上海电气凯士比核电泵阀有限公司 | Method for preparing water-lubricated mechanical sealing surface in ultra-smooth state |
| CN112413129B (en) * | 2020-11-10 | 2023-03-14 | 上海电气凯士比核电泵阀有限公司 | Method for preparing water-lubricated mechanical sealing surface in ultra-smooth state |
| CN113484176A (en) * | 2021-06-23 | 2021-10-08 | 重庆长安汽车股份有限公司 | Oil seal reliability verification method |
| CN114369806A (en) * | 2022-01-14 | 2022-04-19 | 深圳大学 | Method for realizing near-zero running-in ultralow friction |
| CN114369806B (en) * | 2022-01-14 | 2023-08-29 | 深圳大学 | Method for realizing near zero running-in ultralow friction |
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Application publication date: 20170308 |
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