CN103041971B - Method for improving tribological performance of grease lubrication on austenitic stainless steel surface - Google Patents
Method for improving tribological performance of grease lubrication on austenitic stainless steel surface Download PDFInfo
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- CN103041971B CN103041971B CN201210559908.7A CN201210559908A CN103041971B CN 103041971 B CN103041971 B CN 103041971B CN 201210559908 A CN201210559908 A CN 201210559908A CN 103041971 B CN103041971 B CN 103041971B
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Abstract
The invention discloses a method for improving tribological performance of grease lubrication on an austenitic stainless steel surface, belonging to the technical field of surface treatment of a metal material. The method comprises the following steps of: leaving a working surface on a polished, cleaned and dried austenitic stainless steel work-piece; and putting the rest part after being sealed and dried as a working electrode, a saturated calomel electrode as a reference electrode, and a platinum sheet as an auxiliary electrode into an NaCl solution with a concentration of 10-25 wt.%; and respectively carrying out an open circuit potential and potentiodynamic polarization curve test at 20-30 DEG C, wherein the open circuit potential test time lasts for 30-90 min, and the polarization curve test regards -0.5 V corresponding to the open circuit potential as an initial voltage and +1.5 V as an ending voltage, and has a scanning rate of 1 mV/s; obtaining a strip-shaped roughened surface of the austenitic stainless steel after the test; and coating lubricating grease on the treated austenitic stainless steel surface for inspection of the tribological performance. Through the treatment on the austenitic stainless steel, the method for improving the tribological performance of the grease lubrication on the austenitic stainless steel surface, disclosed by the invention, can lower a friction coefficient and reduce abrasion weightlessness.
Description
Technical field
The invention belongs to metal material surface processing technology field, be specifically related to a kind of method that improves austenitic stainless steel surface grease lubrication tribological property.
Background technology
Austenitic stainless steel is a kind of steel that in stainless steel-like, steel grade is maximum, use amount is maximum, and its consumption accounts for 65 ~ 70 % of whole stainless steel output.Austenitic stainless steel becomes the important engineering material in modern industry with its excellent decay resistance and machine-shaping property.But be subject to the restriction of the performance shortcomings such as case hardness is low, coefficient of friction large, wear no resistance, austenitic stainless steel generally can not be joined secondary parts for making heavily loaded high-speed friction.Improve the tribological property on austenitic stainless steel surface, expand its scope of application tool and be of great significance.
Summary of the invention
The object of this invention is to provide a kind of method that improves austenitic stainless steel surface grease lubrication tribological property, can effectively overcome the shortcoming of prior art.
The object of the present invention is achieved like this, it is characterized in that implementation step is:
(1) to the pretreatment of austenite stainless steel workpiece: by using after the oil removing of austenite stainless steel workpiece surface, SiC waterproof abrasive paper is polished step by step, cleaning, drying for standby;
(2) the good austenite stainless steel workpiece of pretreatment is reserved to working face, remainder is used epoxy sealing, after dry, using it as working electrode, by saturated calomel electrode as reference electrode, platinized platinum is placed in as auxiliary electrode the NaCl solution that concentration is 10 ~ 25 wt.%, at 20 ~ 30 ℃, carry out respectively OCP and the test of electrokinetic potential polarization curve, the OCP testing time is 30 ~ 90 min, it is starting voltage that polarization curve test is got with respect to OCP-0.5 V, + 1.5 V are final voltage, sweep speed is that 1mV/s tests, austenitic stainless steel after test obtains banded rough surface,
(3) will on the banded rough surface of austenitic stainless steel after treatment, apply lubricating grease, its surface along be parallel to strip direction and perpendicular to strip direction on carry out respectively coefficient of friction and wear weight loss and detect, and contrast with untreated austenitic stainless steel.
Advantage of the present invention and good effect are: adopt the inventive method to process austenitic stainless steel, can reduce coefficient of friction, weightlessness reduces wear.
Accompanying drawing explanation
Fig. 1 is three electrode experimental provision schematic diagrames used in the present invention;
Fig. 2 is the austenitic stainless steel surface state figure after processing;
Fig. 3 is coefficient of friction comparison diagram;
Fig. 4 wear weight loss comparison diagram;
1-reference electrode in figure; 2-electrolytic cell; 3-water-bath crucible; 4-salt bridge; 5-working electrode; 6-auxiliary electrode; 7-platinized platinum; 8-austenite stainless steel workpiece; 9-saturated calomel electrode; Coefficient of friction curve under 10-untreated stainless steel grease lubrication condition; 11-after treatment under stainless steel grease lubrication condition perpendicular to the coefficient of friction curve of strip direction K test; 12-after processing, under stainless steel grease lubrication condition, be parallel to the coefficient of friction curve that strip direction S tests; Wear weight loss under 13-untreated stainless steel grease lubrication condition; 14-after processing, under stainless steel grease lubrication condition, be parallel to the wear weight loss that strip direction S tests; The wear weight loss of testing perpendicular to strip direction K under stainless steel grease lubrication condition after 15-processing; M-NaCl solution; N-water; K-perpendicular to strip direction; S-be parallel to strip direction; μ-coefficient of friction; T-fraction time; G-wear weight loss.
the specific embodiment
Now take 316 austenitic stainless steels as example, the present invention is implemented, as Fig. 1,2,3,4 can show:
(1) to 316 austenite stainless steel workpiece pretreatment: by after 316 austenitic stainless steel surface degreasings, use SiC waterproof abrasive paper by its polish step by step, cleaning, drying for standby;
(2) 316 good austenite stainless steel workpieces of pretreatment are reserved the sealing of working face, remainder, dry after, with austenite stainless steel workpiece 8 as working electrode 5, by saturated calomel electrode 9 as reference electrode 1, with platinized platinum 7, as auxiliary electrode 6, be placed in the NaCl solution that concentration is 15 wt.%, at 25 ℃, carry out respectively OCP and the test of electrokinetic potential polarization curve.The OCP testing time is 60 min, then according to the OCP value recording, sets polarization curve test parameter, and getting with respect to OCP-0.5V is that starting voltage ,+1.5V are final voltage, and sweep speed is that 1mV/s tests.After finishing, test applies lubricating grease at the surface of the work that forms ribbon rough surface.
(3) to detecting with the coefficient of friction and the wear weight loss that are parallel to strip direction S perpendicular to strip direction K through carrying out respectively on 316 austenite stainless steel workpiece 8 surfaces of above-mentioned processing, and contrast with untreated 316 stainless steels, as shown in Figure 3,4, from testing result, can find out, coefficient of friction and the wear weight loss of the 316 austenite stainless steel workpieces of processing through the inventive method have all significantly reduced.
Claims (1)
1. a method that improves austenitic stainless steel surface grease lubrication tribological property, is characterized in that: comprise the following steps:
(1) to 316 austenite stainless steel workpiece pretreatment: by using after 316 austenite stainless steel workpiece surface oil removings, SiC waterproof abrasive paper is polished step by step, cleaning, drying for standby;
(2) 316 good austenite stainless steel workpieces of pretreatment are reserved to working face, remainder is used epoxy sealing, after dry, using it as working electrode, by saturated calomel electrode as reference electrode, platinized platinum is placed in as auxiliary electrode the NaCl solution that concentration is 10 ~ 25 wt.%, at 20 ~ 30 ℃, carry out respectively OCP and the test of electrokinetic potential polarization curve, the OCP testing time is 30 ~ 90 min, it is starting voltage that polarization curve test is got with respect to OCP-0.5 V, + 1.5 V are final voltage, sweep speed is that 1 mV/s tests, 316 austenitic stainless steels after test obtain banded rough surface,
(3) will on the banded rough surface of 316 austenitic stainless steel after treatment, apply lubricating grease, be parallel to strip direction and perpendicular to strip direction on carry out respectively coefficient of friction and wear weight loss and detect, and carry out contrast test with untreated 316 austenitic stainless steels.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210559908.7A CN103041971B (en) | 2012-12-21 | 2012-12-21 | Method for improving tribological performance of grease lubrication on austenitic stainless steel surface |
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| CN201210559908.7A CN103041971B (en) | 2012-12-21 | 2012-12-21 | Method for improving tribological performance of grease lubrication on austenitic stainless steel surface |
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| CN103041971A CN103041971A (en) | 2013-04-17 |
| CN103041971B true CN103041971B (en) | 2014-05-07 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952645A (en) * | 2006-08-03 | 2007-04-25 | 华宏勋 | Binode polarization curve method for measuring electrochemical characteristic and corrosion resistance of metal |
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| US20080179198A1 (en) * | 2007-01-29 | 2008-07-31 | Burgess Michelle S | System and method of use for electrochemical measurement of corrosion |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952645A (en) * | 2006-08-03 | 2007-04-25 | 华宏勋 | Binode polarization curve method for measuring electrochemical characteristic and corrosion resistance of metal |
Non-Patent Citations (4)
| Title |
|---|
| NaCl溶液中腐蚀学因素对化学镀Ni-P合金腐蚀磨损行为的影响;赵国鹏等;《中国有色金属学报》;19960331;第6卷(第1期);第63页2.1，图2-4 * |
| Ti6Al4V合金表面离子铌合金化及其耐磨性能研究;唐长斌等;《金属热处理》;20101025;第35卷(第10期);参见第2页左栏 * |
| 唐长斌等.Ti6Al4V合金表面离子铌合金化及其耐磨性能研究.《金属热处理》.2010,第35卷(第10期),参见第2页左栏. |
| 赵国鹏等.NaCl溶液中腐蚀学因素对化学镀Ni-P合金腐蚀磨损行为的影响.《中国有色金属学报》.1996,第6卷(第1期),第63页2.1，图2-4. |
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