CN103901184A - Method for testing and evaluating antifriction abrasion resistance of lubricating oil by utilizing friction test machine - Google Patents
Method for testing and evaluating antifriction abrasion resistance of lubricating oil by utilizing friction test machine Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 194
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005299 abrasion Methods 0.000 title abstract description 6
- 239000003921 oil Substances 0.000 claims abstract description 29
- 239000000523 sample Substances 0.000 claims description 106
- 150000001875 compounds Chemical class 0.000 claims description 32
- 238000011156 evaluation Methods 0.000 claims description 28
- 238000005259 measurement Methods 0.000 claims description 14
- 230000001603 reducing effect Effects 0.000 claims description 14
- 238000005461 lubrication Methods 0.000 claims description 10
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 9
- 240000005373 Panax quinquefolius Species 0.000 claims description 9
- 239000003831 antifriction material Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000011158 quantitative evaluation Methods 0.000 claims 1
- 239000000314 lubricant Substances 0.000 description 29
- 230000000694 effects Effects 0.000 description 10
- 238000010998 test method Methods 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000005498 polishing Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 229940125904 compound 1 Drugs 0.000 description 2
- 229940125782 compound 2 Drugs 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 206010034133 Pathogen resistance Diseases 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- 230000008439 repair process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/30—Oils, i.e. hydrocarbon liquids for lubricating properties
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Abstract
The invention relates to a method for testing and evaluating antifriction abrasion resistance of lubricating oil by utilizing a friction test machine. The method comprises the following steps of arranging a lubricating oil sample into an oil storage box so as to enable a rotating friction wheel to be in surface contact with a fixed friction wheel under the condition that the rotating friction wheel is immersed in the lubricating oil sample, thus producing the slide friction; measuring the temperature of the lubricating oil sample by utilizing a temperature sensor at a plurality of preset discrete time points; measuring power supply current of a motor by utilizing a current measuring device; calculating and displaying friction resistance (f) by utilizing a friction resistance calculating and displaying unit, wherein the calculation formula is as follows: f=UI/rc, wherein f is the friction resistance, U is the power supply voltage, I is the power supply current, r is the rotation speed of the rotating friction wheel, and c is the perimeter of the rotating friction wheel; evaluating and/or comparing the antifriction abrasion resistance of the lubricating oil sample according to the measured temperature, current and friction resistance.
Description
Technical field
The present invention relates to a kind of performance test methods, relate in particular to a kind of simple method for testing bacterial resistance of fast detecting lubricating oil anti-wear and wear-resistant performance.
Background technology
Now detecting liquid, semi-solid lubricant anti-wear and wear-resistant performance, universal method is four-ball tester method, terraced Mu Kenfa etc., all exists and is difficult for as follows the shortcoming that overcomes: one, method instrument equipment price costliness, bulky, can not carry; Two, method complex operation, length consuming time, expense is high; Three, method is strongly professional, and layman beyonds one's depth and accepts; Four, method cannot meet general trade company or user the product anti-wear and wear-resistant performances such as lubricating oils are carried out the actual demand of Fast Evaluation comparison.
U.S. Pat 6349587 and US6199424 portable general frictional testing machine and method, for detection of rubber sample, rubber surface from differentiated friction material surface friction factor, contact and the direction under different sliding speeds.Chinese patent CN1136662A reciprocating surface wear testing machine, it is the testing machine that part material itself or material surface friction and wear behavior are evaluated, reading is to produce wearing and tearing by sample, and lever is declined, and detects the size of meter reading decline mensuration wear extent.Friction, abrasion performance testing machine that Chinese patent CN101153834A controls automatically, this invention can be applicable to rubbing wear, the braking brake test of dry type, Wet-type friction material.When use, be connected with computing machine, can measure the data of test moment, and can only understand the rubbing wear situation of experiment material.
Chinese patent CN2736771Y discloses a kind of lubricating oil combination property evaluation testing machine, it comprises propulsion system, friction pair, oil-receptacle, charger, stationary shaft, described friction pair comprises rotor and stator, and described propulsion system are connected with described rotor, and described stator can be along described stationary shaft rotation, described stator is connected with described charger, and described oil-receptacle is positioned at described rotor bottom.This utility model adopts counterweight to bear a heavy burden, and utilizes lever principle, makes stator and the rotor generation sliding friction of friction point, evaluates the abrasion resistance of lubricating oil by the final oil temperature variation of attemperating unit test record and friction pair polishing scratch.Its concrete operation step is as follows:
1, after setting-up time (temperature), start by reset key, and switch is threaded to time (temperature) setting machine run.
2, no-load running, after 1 minute, starts to add load for every 30 seconds.
3, after friction is turned round 10 minutes, motor automatic stop.(add after a fixed load, temperature arrising caused by friction, until design temperature, motor shuts down.)
4, record now oil temperature.(by time Pause key, the record time now.)
5, take off friction member, change rubbing surface, repairing rotor polishing scratch, is cooled to rotor after normal temperature, carries out the test comparison definition of another sample.(finish after all the other samples, whole samples are compared.)
Hence one can see that, and this utility model testing machine, by setting-up time or temperature or time and temperature, in the time reaching certain hour or temperature, is evaluated the abrasion resistance of lubricating oil by recording temperature (time) and friction pair polishing scratch.This utility model simplicity of design, easy to operate and be easy to carry about with one.But still there is following defect in this utility model:
First, the anti-wear and wear-resistant performance accuracy that this utility model testing machine is evaluated lubricating oil by polishing scratch is not high, and neither one accurately standard is passed judgment on the size of polishing scratch, and polishing scratch itself is also that milli is irregular, different people is not identical to the judgement of polishing scratch yet, can cause personal error.
Secondly, after every test once, just need change and repair friction pair, increased manpower, material resources and financial resources.
Moreover temperature is easily affected by the external environment, make the accuracy of measurement result not high.
Finally, this utility model can not draw test result the very first time, needs to calculate.
For the existing defect of above prior art, the present invention is based on existing portable frictional testing machine, a kind of new method of testing is provided.This method of testing accuracy is high, simple to operate, cost is low, and can reflect intuitively test result.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of installation, debugging, easy to use, lightweight, be easy to carry, can carry out on-the-spot test in different occasions, do not need to carry out professional training and other accurate instrument testing, the electric energy consuming by fricative heat temperature and frictional resistance, utilizes temperature indicating device, current measuring device, frictional resistance to calculate the test method of the Portable frequency converting frictional testing machine of the numerical value judgement of display unit demonstration.Be particularly suitable for the market sale of general trade company or user the product anti-wear and wear-resistant performances such as lubricating oils are carried out to Fast Evaluation comparison.
For the existing defect of above prior art, the present invention is based on existing portable frictional testing machine, a kind of new method of testing is provided.This method of testing accuracy is high, simple to operate, cost is low, and reaction test result intuitively.
A kind of method of utilizing frictional testing machine test evaluation lubricating oil anti-wear and wear-resistant performance of the present invention, the method test result is directly perceived, is a kind of method of testing of easy test evaluation lubricating oil.Described frictional testing machine comprise contain oil box, motor, by described electric motor driven pivoting friction wheel, fixed friction wheel, temperature sensor, temperature indicating device and current measuring device, it is characterized in that, said method comprising the steps of:
Lubricating oil sample is put into described Sheng oil box;
Make described pivoting friction wheel carry out sliding friction with the face way of contact each other with described fixed friction wheel under the condition being infiltrated in lubricating oil sample;
At some predetermined discrete time points, utilize temperature sensor to measure the temperature of lubricating oil sample, on temperature indicating device, show real time data; And utilize current measuring device to measure the supply current of described motor simultaneously, on current measuring device, show real time data; Calculate display unit by frictional resistance again and calculate and show frictional resistance (f), its computing formula is as follows:
f＝UI/rc，
Wherein, f is frictional resistance, and U is supply voltage and is generally 220 volts, and I is supply current, and r is the rotating speed of pivoting friction wheel and is generally 1200 revs/min, and c is the girth of pivoting friction wheel, is 4 centimetres to the pivoting friction wheel diameter of described testing machine.
Jointly evaluate and/or compare the anti-wear and wear-resistant performance of lubricating oil sample according to the temperature recording, electric current and frictional resistance three's data.
According to a preferred implementation, carry out the qualitative and/or anti-wear and wear-resistant performance of evaluation and/or lubricating oil sample more to be measured quantitatively according to test duration, temperature, electric current and the frictional resistance of lubricating oil sample and described pivoting friction wheel and the friction condition between described fixed friction wheel, described lubricating oil sample is liquid lubrication antifriction material, semi-solid lubrication antifriction material or antiwear and friction-reducing additive.
According to a preferred implementation, the method of described test evaluation lubricating oil anti-wear and wear-resistant performance makes described pivoting friction wheel contact with described fixed friction wheel with the mode of lever principle and sliding friction occurs by adopting counterweight to bear a heavy burden, wherein, counterweight heap(ed) capacity is in the scope of 1～5Kg.
According to a preferred implementation, the test duration of lubricating oil sample is 1～15min, within this test duration according to predetermined time interval record temperature data, supply current data and frictional resistance value.
According to a preferred implementation, the judgment criteria of described lubricating oil anti-wear and wear-resistant performance comprises:
1) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if the temperature data of lubricating oil sample reaches 150 ℃, judge accordingly that its antifriction antiwear is poor;
2) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when supply current data corresponding to lubricating oil sample reach 3A, judge accordingly that its antifriction antiwear is poor;
3) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when frictional resistance data corresponding to lubricating oil sample reach 26Kgf, judge accordingly that its antifriction antiwear is poor;
4) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if temperature data lower than 150 ℃ and/or supply current data lower than 3A and/or frictional resistance value the lubricating oil lower than 26Kgf, judge accordingly that its anti-wear and wear-resistant performance is good, otherwise anti-wear and wear-resistant performance is poor.
According to above-mentioned judgment criteria selecting one, select two, select three or four the mode of selecting carry out the anti-wear and wear-resistant performance of evaluation comparison lubricating oil sample.
According to a preferred implementation, calculate display unit the test duration based on counterweight weight, lubricating oil sample, temperature and electric current by frictional resistance, qualitative and/or evaluate quantitatively and/or the antifriction antiwear of the lubricating oil sample of more current test.
According to a preferred implementation, described frictional resistance calculates display unit with graphics mode visually, qualitatively or in real time data mode the antifriction antiwear of the lubricating oil test sample of current test is shown.
According to a preferred implementation, loading under the condition of counterweight 1～5Kg, test duration 1～15min, in the lubricating oil sample differing from one another, the anti-wear and wear-resistant performance of temperature data the higher person is poorer than temperature data junior; In the lubricating oil sample differing from one another, the anti-wear and wear-resistant performance of supply current data the higher person is poorer than supply current data junior; In the lubricating oil sample differing from one another, frictional resistance value is larger, and its anti-wear and wear-resistant performance is poorer.
According to a preferred implementation, the low friction compound to be measured that adds scheduled volume under predetermined temperature is to after in lubricating oil sample, and it is qualitative and/or evaluate quantitatively and/or the friction reducing effect of low friction compound more to be measured to calculate the test result of display unit based on described temperature indicating device, described current measuring device and described frictional resistance.
According to a preferred implementation, in the time that the temperature data of described lubricating oil sample reaches 150 ℃, add the low friction compound to be measured of 0.3wt%, according to predetermined time interval record measurement result.
According to a preferred implementation, after adding the low friction compound to be measured of 0.3wt%, temperature data is down to 100 ℃ of following and/or supply current data and is down to the following and/or frictional resistance value of 2A lower than 18Kgf, and the friction reducing effect of described low friction compound to be measured is good; While contrasting the friction reducing effect of two kinds of different low friction compounds, temperature data is first down to 100 ℃ below and/or supply current data are first down to below 2A and/or the friction reducing effect of the first low friction compound lower than 18Kgf of frictional resistance value is better; While contrasting the friction reducing effect of two kinds of different low friction compounds, its friction reducing effect of low friction compound that frictional resistance value is less is better.
According to a preferred implementation, the initial temperature before test is 50 ℃.When test, in the time that specimen temperature reaches 50 ℃, start the parameters such as writing time, temperature, electric current, with the consistance of warranty test condition.
A kind of frictional testing machine of the present invention, described frictional testing machine comprise contain oil box, motor, by described electric motor driven pivoting friction wheel, fixed friction wheel, temperature sensor and current measuring device, it is characterized in that, described pivoting friction wheel carries out sliding friction with the face way of contact each other with described fixed friction wheel under the condition being infiltrated in lubricating oil sample; Described frictional testing machine has frictional resistance and calculates display unit; Described temperature sensor is arranged in described Sheng oil box in the mode fully contacting with lubricating oil sample, and described temperature sensor and temperature indicating device are connected to each other; And described current measuring device and described frictional resistance calculate display unit and are connected to each other, so that the power supply parameter being recorded is sent to described frictional resistance and calculates display unit, thereby calculating display unit, described frictional resistance can calculate frictional resistance (f) according to following computing formula:
f＝UI/rc，
Wherein, f is frictional resistance, and U is supply voltage and is generally 220 volts, and I is supply current, and r is the rotating speed of pivoting friction wheel and is generally 1200 revs/min, and c is the girth of pivoting friction wheel, is 4 centimetres to the pivoting friction wheel diameter of described testing machine.
According to a preferred implementation, described frictional resistance calculates display unit and carrys out the qualitative and/or anti-wear and wear-resistant performance of evaluation and/or lubricating oil sample more to be measured quantitatively according to test duration, the electric current recording and frictional resistance and described pivoting friction wheel and the friction condition between described fixed friction wheel.
According to a preferred implementation, calculate display unit the test duration based on counterweight weight, lubricating oil sample and temperature by frictional resistance, qualitatively the antifriction antiwear of the lubricating oil sample of evaluation and/or more current test.
According to a preferred implementation, the described frictional resistance of frictional testing machine of the present invention calculates display unit with graphics mode visually, qualitatively the antifriction antiwear of the lubricating oil test sample of current test is shown.
According to a preferred implementation, the low friction compound to be measured that adds scheduled volume under predetermined temperature is to after in lubricating oil sample, and test result based on described temperature indicating device, described current measuring device and described frictional resistance calculate display unit judges the friction reducing effect of low friction compound to be measured qualitatively.
According to a preferred implementation, described frictional testing machine also comprises counterweight, the weight tray of counterweight described in splendid attire, negative G arm mechanism, the power switch of temperature sensor and the described motor of startup, described negative G arm mechanism comprises the short heavy burden arm of force that is shaped to the long heavy burden arm of force of one with described weight tray and is arranged on described long heavy burden arm of force top, the described long heavy burden arm of force and described short heavy burden arm of force ratio can regulate by the position of load-bearing blade, and the described long heavy burden arm of force and the described short heavy burden arm of force are to arrange around the mode of long arm of force stationary shaft and the rotation of short arm of force stationary shaft respectively, described fixed friction wheel is arranged on the other end of the described short heavy burden arm of force relative with the described long heavy burden arm of force by fixed screw, and described fixed friction wheel contacts with the described pivoting friction wheel face arranging thereunder.
According to a preferred implementation, the load-bearing cutting edge adjustable ground of described frictional testing machine is arranged on one end of the close described short heavy burden arm of force of the described long heavy burden arm of force, and by regulating described load-bearing cutting edge to make in the time not loading described counterweight, the described fixed friction wheel being arranged on the described short heavy burden arm of force steadily contacts mutually with the described pivoting friction wheel that is arranged on described fixed friction wheel below.
According to a preferred implementation, the temperature probe of described temperature sensor is arranged between 1/4～1/2 height of described Sheng oil box, makes described temperature sensor in the situation that not being affected by the external environment, the temperature variation of Measurement accuracy lubricating oil sample.
Test lubricating oil anti-wear and wear-resistant performance simple and easy method of the present invention, by temperature indicating device and the current measuring device being connected with motor of test lubricating oil temperature and the frictional resistance display unit being connected with current measuring device, can judge intuitively the antifriction antiwear effect of lubricating oil or antiwear and friction-reducing additive, accuracy is high, easy and simple to handle, test result is directly perceived, by bulk registration test result, can judge the anti-wear and wear-resistant performance of lubricating oil the very first time.The frictional testing machine that relates to this method of testing is simple in structure, and layman easily uses, and liquid, semi-solid lubrication antifriction material that can test different types, highly versatile.
frictional testing machine of the present inventionand the simple and easy method of test lubricating oil anti-wear and wear-resistant performance, be used for testing lubrication antifriction material, testing machine volume is little, be easy to carry about with one, simple to operate, do not need exact instrument check, the data that only show according to temperature indicating device, frictional resistance display unit and current measuring device contrast, test method is short and sweet, through simple training.
Compare with testing temperature, survey electric current or observation polishing scratch single in prior art, the data that the present invention combines temperature, electric current and frictional resistance three are evaluated and/or the anti-wear and wear-resistant performance of lubricating oil (lubricant or low friction compound) relatively jointly, test result is directly perceived, avoid the impact of ambient temperature on test result, also avoided the personal error who produces by observing polishing scratch size simultaneously, fully guarantee the unicity of test condition, reduce the error existing in the middle of experiment, improve the accuracy of test result, made test result more accurate.In addition, method of testing of the present invention not only can be qualitative, can also evaluate quantitatively and/or the anti-wear and wear-resistant performance of lubricating oil (lubricant or low friction compound) relatively.
frictional testing machine of the present inventiontool has the following advantages: it adopts one-piece construction, and installation, debugging, easy to use are lightweight, are easy to carry, and can carry out on-the-spot test in different occasions, does not need to carry out professional training and other accurate instruments.Utilize the test method of the portable frictional testing machine test of the present invention lubricating oil, railway grease and low friction compound simple, easy and simple to handle, accuracy is high, practical.
Accompanying drawing explanation
Fig. 1 is the structural drawing of frictional testing machine of the present invention.
Reference numerals list
1: motor 2: pivoting friction wheel 3: the long heavy burden arm of force
4: the short heavy burden arm of force 5: counterweight 6: weight tray
7: fixed friction wheel 8: long arm of force stationary shaft 9: load-bearing cutting edge
10: fixed screw 11: contain oil box 12: temperature sensor
13: temperature indicating device 14: current measuring device 15: power switch
16: short arm of force stationary shaft 17: frictional resistance calculates display unit 100: frictional testing machine
18: clamp
Embodiment
Below in conjunction with specific embodiments and the drawings explanation the present invention.
Before test, first that pivoting friction wheel 2 use 0#, 00# sand papering are smooth, wipe examination totally with paper handkerchief.By fixing fixed friction wheel 7 use fixed screws 10.The length heavy burden arm of force 3 is arranged on stationary shaft 8.The short heavy burden arm of force 4 is arranged on stationary shaft 16.Fixed friction wheel 7 is steadily in contact with one another by load-bearing cutting edge 9 with pivoting friction wheel 2.To contain oil box 11 use fixation clamps 18 fixing, add sample to be tested.
As follows with the simple and easy method of the anti-wear and wear-resistant performance of frictional testing machine detecting liquid lubricant of the present invention, semisolid lubricants, low friction compound:
1, by the method for frictional testing machine detecting liquid lubricant of the present invention be: start frequency conversion type motor 1 with power switch 15.Variable-frequency motor 1 drives pivoting friction wheel 2 and fixed friction wheel 7 to carry out sliding friction running.In 1～15 minute, pivoting friction wheel 2 and fixed friction are taken turns 7 fricative heats and are passed to fluid lubricant, pass to temperature indicating device 13 by temperature sensor 12, show numerical value by temperature indicating device 13.Frictional resistance shows by calculating display unit 17 with current measuring device 14 and the frictional resistance being connected with the form of curent change.The result that every 1 minute record is measured, until the variation of temperature and/or electric current and/or frictional resistance is while meeting one of following condition, test stops, and judges the quality of test specimen:
1) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if the temperature data of lubricating oil sample reaches 150 ℃, judge accordingly that its antifriction antiwear is poor;
2) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if lubricating oil sample corresponding supply current data while reaching 3A, judge accordingly that its antifriction antiwear is poor;
3) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when frictional resistance value corresponding to lubricating oil sample reaches 26Kgf, judge accordingly that its antifriction antiwear is poor;
4) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if temperature data lower than 150 ℃ and/or supply current data lower than 3A and/or frictional resistance value the lubricating oil lower than 26Kgf, judge accordingly that its anti-wear and wear-resistant performance is good, otherwise anti-wear and wear-resistant performance is poor.
5) loading under the condition of counterweight 1～5Kg, test duration 1～15min, in the lubricating oil sample differing from one another, the anti-wear and wear-resistant performance of temperature data the higher person is poorer than temperature data junior; In the lubricating oil sample differing from one another, the anti-wear and wear-resistant performance of supply current data the higher person is poorer than supply current data junior; In the lubricating oil sample differing from one another, frictional resistance value is larger, and its antiwear and friction reduction property is poorer.
2, by the method for the portable frictional testing machine of the present invention test semisolid lubricants be: start frequency conversion type motor 1 with power switch 15.Variable-frequency motor 1 drives pivoting friction wheel 2 and fixed friction wheel 7 to carry out sliding friction running.In 1～15 minute, pivoting friction wheel 2 is taken turns 7 fricative heats with fixed friction.The feature of conducting heat because of semisolid lubricants (as railway grease) is gathered on fixed friction wheel 7, passes to temperature indicating device 13 by temperature sensor 12, shows numerical value by temperature indicating device 13.Frictional resistance value shows numerical value with the form of curent change by calculating display unit 17 with current measuring device 14 and the frictional resistance being connected.Within every 1 minute, record measurement result, until the variation of temperature and/or electric current and/or frictional resistance is while meeting one of following condition, test stops, and judges the quality of test specimen:
1) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if the temperature data of semisolid lubricants sample reaches 150 ℃, judge accordingly that its antifriction antiwear is poor;
2) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when supply current data corresponding to semisolid lubricants sample reach 3A, judge accordingly that its antifriction antiwear is poor;
3) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when frictional resistance value corresponding to semisolid lubricants sample reaches 26Kgf, judge accordingly that its antifriction antiwear is poor;
4) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if temperature data lower than 150 ℃ and/or supply current data lower than 3A and/or frictional resistance value the semisolid lubricants lower than 26Kgf, judge accordingly that its anti-wear and wear-resistant performance is good, otherwise anti-wear and wear-resistant performance is poor;
5) loading under the condition of counterweight 1～5Kg, test duration 1～15min, in the semisolid lubricants sample differing from one another, the anti-wear and wear-resistant performance of temperature data the higher person is poorer than temperature data junior; In the semisolid lubricants sample differing from one another, the anti-wear and wear-resistant performance of supply current data the higher person is poorer than supply current data junior; In the semisolid lubricants sample differing from one another, frictional resistance value is larger, and its anti-wear and wear-resistant performance is poorer.
3, by the method for the portable frictional testing machine of the present invention test low friction compound be: start frequency conversion type motor 1 with power switch 15.Variable-frequency motor 1 drives pivoting friction wheel 2 and fixed friction wheel 7 to carry out sliding friction running.Fluid lubricant carries out sliding friction running at pivoting friction wheel 2 and fixed friction wheel 7.In 1～15 minute, when the heat producing makes fluid lubricant reach 150 ℃, add the low friction compound of 0.3wt%, along with adding of low friction compound, frictional resistance reduces, and fricative heat reduces, and temperature declines gradually, pass to temperature indicating device 13 by temperature sensor 12, show numerical value by temperature indicating device 13.Frictional resistance calculates display unit 17 with the form of curent change by current measuring device 14 and the frictional resistance being connected and shows numerical value.The result that every 1 minute record is measured, until the variation of temperature and/or electric current and/or frictional resistance is while meeting one of following condition, test stops, and judges the quality of test specimen:
1) after adding the antifriction and antiwear agents to be measured of 0.3wt%, temperature data is down to 100 ℃ of following and/or supply current data and is down to 2A and/or frictional resistance lower than below 18Kgf, and the antifriction antiwear of described antifriction and antiwear agents to be measured is effective;
2), while contrasting the antifriction antiwear effect of two kinds of different antifriction and antiwear agentses, temperature data is first down to 100 ℃ below and/or supply current data are first down to 2A and/or the first antifriction antiwear better effects if lower than the antifriction and antiwear agents below 18Kgf of frictional resistance value;
3), while contrasting the antifriction antiwear effect of two kinds of different antifriction and antiwear agentses, its antifriction antiwear effect of antifriction and antiwear agents that friction force value is less is better.
What the present embodiment was tested is the anti-wear and wear-resistant performance of liquid lubrication material.
Oil sample A, oil sample B, oil sample C and oil sample D are tested according to following steps respectively:
1) lubricating oil test sample is put into and contained oil box 11, fixing with clamp 18, setting counterweight heap(ed) capacity is 5Kg, and the time is 1～15min, in order to guarantee the accuracy of test, the initial temperature of test is made as to 50 ℃;
2) press power switch 15 starter motors 1, make motor 1 drive pivoting friction wheel 2 to rotate, thereby pivoting friction is taken turns 2, with fixed friction wheel 7, sliding frictions is occurred, and the heat of fricting movement generation and resistance are shown by temperature indicating device 16 and frictional resistance calculating display unit 17 respectively;
3) in the time that temperature reaches 50 ℃, start record, within every 1 minute, record the measurement result of temperature indicating device 13, current measuring device 14 and frictional resistance calculating display unit 17, finish until be recorded to 15min;
4) evaluate the anti-wear and wear-resistant performance of lubricating oil by measurement result;
5) repeat aforesaid operations step, test different lubricating oil test samples.
Carry out the qualitative and/or anti-wear and wear-resistant performance of evaluation and/or lubricating oil sample more to be measured quantitatively according to test duration, temperature, electric current and the frictional resistance of lubricating oil sample and pivoting friction wheel 2 and the friction condition between fixed friction wheel 7.Lubricating oil sample is liquid lubrication antifriction material, semi-solid lubrication antifriction material or antiwear and friction-reducing additive.
Table 1 is the test result of embodiment 1.
Table 1
Judge the anti-wear and wear-resistant performance of four kinds of lubricating oil according to following four condition one:
1) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if the temperature data of lubricating oil test sample reaches 150 ℃, judge accordingly that its antifriction antiwear is poor;
2) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when current data corresponding to lubricating oil test sample reaches 3A, judge accordingly that its antifriction antiwear is poor;
3) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when the corresponding frictional resistance value of lubricating oil test sample reaches 26Kgf, judge accordingly that its antifriction antiwear is poor;
4) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if temperature data lower than 150 ℃ and/or supply current data lower than 3A and/or frictional resistance the lubricating oil lower than 26Kgf, judge accordingly that its anti-wear and wear-resistant performance is good, otherwise anti-wear and wear-resistant performance is poor.
Hence one can see that, and anti-wear and wear-resistant performance oil sample D is better than B, and B is better than C, and C is better than A.
What the present embodiment was tested is the anti-wear and wear-resistant performance of antifriction and antiwear agents
Oil sample A+ (low friction compound 1) and oil sample A+ (low friction compound 2) are tested according to following steps:
1) lubricating oil test sample is put into and contained oil box 11, fixing with clamp 18, setting counterweight heap(ed) capacity is 5Kg, and the time is 1～15min, in order to guarantee the accuracy of test, the initial temperature of test is made as to 50 ℃;
2) press power switch 15 starter motors 1, make motor 1 drive pivoting friction wheel 2 to rotate, thereby pivoting friction is taken turns 2, with fixed friction wheel 7, sliding frictions is occurred, and the heat of fricting movement generation and resistance are shown by temperature indicating device 13, current measuring device 14 and frictional resistance calculating display unit 17 respectively;
3) in the time that temperature reaches 50 ℃, start record, in the time that the temperature reading of described lubricating oil test sample reaches 150 ℃, add the low friction compound to be measured of 0.3wt%, within every 1 minute, record measurement result;
4) within every 1 minute, record temperature indicating device 13, current measuring device 14, frictional resistance and calculate the measurement result of display unit 17, finish until be recorded to 15min;
5) evaluate the anti-wear and wear-resistant performance of lubricating oil by measurement result;
6) repeat aforesaid operations step, test different lubricating oil test samples.
Table 2 is the test result of embodiment 2.
Table 2
Judge the anti-wear and wear-resistant performance of two kinds of low friction compounds according to following three each and every one condition one:
1) after adding the antifriction and antiwear agents to be measured of 0.3wt%, temperature data is down to 100 ℃ of following and/or supply current data and is down to 2A and/or frictional resistance lower than below 18Kgf, and the antifriction antiwear of described antifriction and antiwear agents to be measured is effective;
2), while contrasting the antifriction antiwear effect of two kinds of different antifriction and antiwear agentses, temperature data is first down to 100 ℃ below and/or supply current data are first down to 2A and/or the first antifriction antiwear better effects if lower than the antifriction and antiwear agents below 18Kgf of frictional resistance value;
3), while contrasting the antifriction antiwear effect of two kinds of different antifriction and antiwear agentses, its antifriction antiwear effect of antifriction and antiwear agents that friction force value is less is better.
The anti-friction antifriction performance of hence one can see that low friction compound 1 is better than the anti-wear and wear-resistant performance of low friction compound 2.
What the present embodiment was tested is the anti-wear and wear-resistant performance of semi-solid lubrication antifriction material.
Semisolid lubricants sample A and semisolid lubricants sample B are tested in accordance with the following steps:
1) semisolid lubricants sample is put into and contained oil box 11, fixing with clamp 18, setting counterweight heap(ed) capacity is 5Kg, and the time is 1～15min, in order to guarantee the accuracy of test, the initial temperature of test is made as to 50 ℃;
2) press power switch 15 starter motors 1), make motor 1 drive pivoting friction wheel 2 to rotate, thereby pivoting friction is taken turns 2, with fixed friction wheel 7, sliding frictions is occurred, and the heat of fricting movement generation and resistance are shown by temperature indicating device 13, current measuring device 14 and frictional resistance calculating display unit 17 respectively;
3) within every 1 minute, record temperature indicating device 13, current measuring device 14 and frictional resistance and calculate the measurement result of display unit 17, finish until be recorded to 15min;
4) evaluate the anti-wear and wear-resistant performance of semisolid lubricants sample by measurement result;
5) repeat aforesaid operations step, test different semisolid lubricants test specimens.
Table 3 is the test result of embodiment 3.
Table 3
Anti-wear and wear-resistant performance according to following Standard Judgement semisolid lubricants sample A and semisolid lubricants sample B:
1) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if the temperature data of semisolid lubricants sample reaches 150 ℃, judge accordingly that its antifriction antiwear is poor;
2) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when the current data of semisolid lubricants sample reaches 3A, judge accordingly that its antifriction antiwear is poor;
3) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when frictional resistance value corresponding to semisolid lubricants sample reaches 26Kgf, judge accordingly that its antifriction antiwear is poor;
4) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if temperature data lower than 150 ℃ and/or supply current data lower than 3A and/or frictional resistance value the semisolid lubricants sample lower than 26Kgf, judge accordingly that its anti-wear and wear-resistant performance is good, otherwise anti-wear and wear-resistant performance is poor.
Hence one can see that, and the anti-wear and wear-resistant performance of semisolid lubricants sample A is better than the anti-wear and wear-resistant performance of semisolid lubricants sample B.
Referring to Fig. 1, a kind of frictional testing machine 100, frictional testing machine comprise contain oil box 11, motor 1, by electric motor driven pivoting friction wheel 2, fixed friction wheel 7, temperature sensor 12 and current measuring device 14.Pivoting friction wheel 2 takes turns 7 each other with face way of contact sliding friction with fixed friction under the condition being infiltrated in lubricating oil sample.Frictional testing machine 100 has frictional resistance and calculates display unit 17.Temperature sensor 12 is arranged on and contains in oil box 11 in the mode fully contacting with lubricating oil sample.Temperature sensor 12 is connected to each other with temperature indicating device 13.Current measuring device 14 calculates display unit 17 with frictional resistance and is connected to each other, and calculates display unit 17 so that the power supply parameter being recorded is sent to frictional resistance.Frictional resistance calculates display unit can calculate frictional resistance (f) according to following computing formula:
f＝UI/rc，
Wherein, f is frictional resistance, and U is supply voltage and is generally 220 volts, and I is supply current, and r is the rotating speed of pivoting friction wheel and is generally 1200 revs/min, and c is the girth of pivoting friction wheel, is 4 centimetres to the pivoting friction wheel diameter of described testing machine.
The present invention can judge the antifriction antiwear effect of lubricating oil or low friction compound intuitively from the test result of temperature indicating device 13, current measuring device 14 and frictional resistance calculating display unit 17, without calculating, simple to operate, even if layman also can operate, accuracy is high, general strong.
It is can be according to test duration, the frictional resistance recording and pivoting friction wheel 2 and friction condition between fixed friction wheel 7 qualitative and/or determine quantitatively the anti-wear and wear-resistant performance of lubricating oil sample to be measured that frictional resistance calculates display unit 17.
As shown in Figure 1, frictional testing machine also comprises the power switch 15 of weight tray 6, negative G arm mechanism, temperature sensor 12, clamp 18 and the actuating motor 1 of counterweight 5, splendid attire counterweight 5.Negative G arm mechanism comprises the short heavy burden arm of force 4 that is shaped to the long heavy burden arm of force 3 of one with weight tray 6 and is arranged on the long heavy burden arm of force 3 tops.The long heavy burden arm of force 3 and the short heavy burden arm of force 4 arrange in the mode of rotating around long arm of force stationary shaft 8 and short arm of force stationary shaft 16 respectively.Fixed friction wheel 7 is arranged on the other end of the short heavy burden arm of force 4 relative with the long heavy burden arm of force 3 by fixed screw 10.Fixed friction wheel 7 contacts with 2, the pivoting friction wheel arranging thereunder.
Load-bearing cutting edge 9 adjustable grounds of frictional testing machine 100 are arranged on one end of the close short heavy burden arm of force 4 of the long heavy burden arm of force 3.By regulating load-bearing cutting edge 9 to make in the time not loading counterweight 5, be arranged on fixed friction wheel 7 on the short heavy burden arm of force 4 and take turns 2 with the pivoting friction that is arranged on fixed friction and takes turns 7 belows and mutually steadily contact.
The temperature probe of temperature sensor 12 is arranged between 1/4～1/2 height of containing oil box 11, makes temperature sensor 12 in the situation that not being affected by the external environment, the temperature variation of Measurement accuracy lubricating oil sample.
It should be noted that above-mentioned specific embodiment is exemplary, under above-mentioned instruction of the present invention, those skilled in the art can carry out flexible Application on the basis of above-described embodiment, and these application drop in protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions are above in order to explain object of the present invention, not for limiting the present invention.Protection scope of the present invention is limited by claim and equivalent thereof.
Claims (20)
1. utilize a method for frictional testing machine test evaluation lubricating oil anti-wear and wear-resistant performance,
Described frictional testing machine comprises Sheng oil box (11), motor (1), takes turns (7), temperature sensor (12), temperature indicating device (13) and current measuring device (14) by described electric motor driven pivoting friction wheel (2), fixed friction, it is characterized in that, said method comprising the steps of:
Lubricating oil sample is put into described Sheng oil box (11);
Make described pivoting friction wheel (2) carry out sliding friction with the face way of contact each other with described fixed friction wheel (7) under the condition being infiltrated in lubricating oil sample;
At some predetermined discrete time points, utilize temperature sensor (12) to measure the temperature of lubricating oil sample, in the upper real time data that shows of temperature indicating device (13); And utilize current measuring device (14) to measure the supply current of described motor (1), on current measuring device, (14) show real time data simultaneously; Calculate display unit (17) by frictional resistance again and calculate and show frictional resistance (f), its computing formula is as follows:
f＝UI/rc，
Wherein, f is frictional resistance, and U is supply voltage, and I is supply current, and r is the rotating speed of pivoting friction wheel, and c is the girth of pivoting friction wheel;
Jointly evaluate and/or compare the anti-wear and wear-resistant performance of lubricating oil sample according to the temperature recording, electric current and frictional resistance three's data.
2. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 1, it is characterized in that, carry out the qualitative and/or anti-wear and wear-resistant performance of evaluation and/or lubricating oil sample more to be measured quantitatively according to test duration, temperature, electric current and the frictional resistance of lubricating oil sample and described pivoting friction wheel (2) and the friction condition between described fixed friction wheel (7), described lubricating oil sample is liquid lubrication antifriction material, semi-solid lubrication antifriction material or antiwear and friction-reducing additive.
3. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 1, it is characterized in that, the method of described test evaluation lubricating oil anti-wear and wear-resistant performance is by adopting counterweight to bear a heavy burden and the mode of lever principle makes described pivoting friction take turns (2) and described fixed friction to take turns (7) and contact and sliding friction occurs, wherein, counterweight heap(ed) capacity is in the scope of 1～5Kg.
4. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 3, it is characterized in that, the test duration of lubricating oil sample is 1～15min, within this test duration according to predetermined time interval record temperature data, supply current data and frictional resistance value.
5. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 4, is characterized in that, the judgment criteria of described lubricating oil anti-wear and wear-resistant performance comprises:
1) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if the temperature data of lubricating oil sample reaches 150 ℃, judge accordingly that its antifriction antiwear is poor;
2) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when supply current data corresponding to lubricating oil sample reach 3A, judge accordingly that its antifriction antiwear is poor;
3) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if when frictional resistance data corresponding to lubricating oil sample reach 26Kgf, judge accordingly that its antifriction antiwear is poor;
4) loading under the condition of counterweight 1～5Kg, test duration 1～15min, if temperature data lower than 150 ℃ and/or supply current data lower than 3A and/or frictional resistance the lubricating oil lower than 26Kgf, judge accordingly that its anti-wear and wear-resistant performance is good, otherwise anti-wear and wear-resistant performance is poor.
6. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 4, it is characterized in that, calculate display unit (17) the test duration based on counterweight weight, lubricating oil sample and temperature by frictional resistance, the antifriction antiwear of the lubricating oil sample of qualitative and/or quantitative evaluation and/or more current test.
7. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 6, it is characterized in that, described frictional resistance calculates display unit (17) with graphics mode visually, qualitatively or in real time data mode the antifriction antiwear of the lubricating oil test sample of current test is shown.
8. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 6, it is characterized in that, loading under the condition of counterweight 1～5Kg, test duration 1～15min, in the lubricating oil sample differing from one another, the anti-wear and wear-resistant performance of temperature data the higher person is poorer than temperature data junior;
Loading under the condition of counterweight 1～5Kg, test duration 1～15min, in the lubricating oil sample differing from one another, the anti-wear and wear-resistant performance of supply current data the higher person is poorer than supply current data junior;
Loading under the condition of counterweight 1～5Kg, test duration 1～15min, in the lubricating oil sample differing from one another, frictional resistance value is larger, and its anti-wear and wear-resistant performance is poorer.
9. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 4, it is characterized in that, the low friction compound to be measured that adds scheduled volume under predetermined temperature is to after in lubricating oil sample, and it is qualitative and/or evaluate quantitatively and/or the friction reducing effect of low friction compound more to be measured to calculate the test result of display unit (17) based on described temperature indicating device (13), described current measuring device (14) and described frictional resistance.
10. the method for test evaluation lubricating oil anti-wear and wear-resistant performance as claimed in claim 9, is characterized in that, in the time that the temperature data of described lubricating oil sample reaches 150 ℃, adds the low friction compound to be measured of 0.3wt%, according to predetermined time interval record measurement result.
The method of the anti-wear and wear-resistant performance of 11. test evaluation lubricating oil as claimed in claim 10, it is characterized in that, after adding the low friction compound to be measured of 0.3wt%, temperature data is down to 100 ℃ of following and/or supply current data and is down to the following and/or frictional resistance value of 2A lower than 18Kgf, and the friction reducing effect of described low friction compound to be measured is good; While contrasting the friction reducing effect of two kinds of different low friction compounds, temperature data is first down to 100 ℃ below and/or supply current data are first down to below 2A and/or the friction reducing effect of the first low friction compound lower than 18Kgf of frictional resistance value is better; While contrasting the friction reducing effect of two kinds of different low friction compounds, its friction reducing effect of low friction compound that frictional resistance value is less is better.
The method of the anti-wear and wear-resistant performance of 12. test evaluation lubricating oil as claimed in claim 1, is characterized in that, the initial temperature before test is 50 ℃.
13. 1 kinds of frictional testing machines (100), described frictional testing machine comprises Sheng oil box (11), motor (1), takes turns (7), temperature sensor (12), temperature indicating device (13) and current measuring device (14) by described electric motor driven pivoting friction wheel (2), fixed friction
It is characterized in that,
Described pivoting friction wheel (2) carries out sliding friction with the face way of contact each other with described fixed friction wheel (7) under the condition being infiltrated in lubricating oil sample;
Described frictional testing machine (100) has frictional resistance and calculates display unit (17);
Described temperature sensor (12) is arranged in described Sheng oil box (11) in the mode fully contacting with lubricating oil sample, and described temperature sensor (12) is connected to each other with temperature indicating device (13); And described current measuring device (14) calculates display unit (17) with described frictional resistance and is connected to each other, so that the power supply parameter being recorded is sent to described frictional resistance and calculates display unit (17), thereby calculating display unit (17), described frictional resistance can calculate frictional resistance (f) according to following computing formula:
f＝UI/rc，
Wherein, f is frictional resistance, and U is supply voltage, and I is supply current, and r is the rotating speed of pivoting friction wheel, and c is the girth of pivoting friction wheel.
14. frictional testing machines as claimed in claim 13 (100), it is characterized in that, described frictional resistance calculates display unit and carrys out the qualitative and/or anti-wear and wear-resistant performance of evaluation and/or lubricating oil sample more to be measured quantitatively according to the electric current recording and described pivoting friction wheel (2) and the friction condition between described fixed friction wheel (7).
15. frictional testing machines as claimed in claim 13 (100), it is characterized in that, calculate display unit (17) the test duration based on counterweight weight, lubricating oil sample and temperature by frictional resistance, qualitatively the antifriction antiwear of the lubricating oil sample of evaluation and/or more current test.
16. frictional testing machines as claimed in claim 15 (100), it is characterized in that, described frictional resistance calculates display unit (17) with graphics mode visually, qualitatively or in real time data mode the antifriction antiwear of the lubricating oil test sample of current test is shown.
17. frictional testing machines as claimed in claim 13 (100), it is characterized in that, the low friction compound to be measured that adds scheduled volume under predetermined temperature is to after in lubricating oil sample, and described frictional resistance calculates that test result that display unit (17) calculates display unit (17) based on described temperature indicating device (13), described current measuring device (14) and described frictional resistance is evaluated qualitatively and/or the friction reducing effect of low friction compound more to be measured.
18. frictional testing machines (100) as claimed in claim 13, it is characterized in that, described frictional testing machine also comprises weight tray (6), negative G arm mechanism, the temperature sensor (12) of counterweight (5) described in counterweight (5), splendid attire and starts the power switch (15) of described motor (1), and for fixing the clamp (18) of described Sheng oil box (11)
Described negative G arm mechanism comprises the short heavy burden arm of force (4) that is shaped to the long heavy burden arm of force (3) of one with described weight tray (6) and is arranged on the described long heavy burden arm of force (3) top, and the described long heavy burden arm of force (3) and the described short heavy burden arm of force (4) are to arrange around the mode of long arm of force stationary shaft (8) and short arm of force stationary shaft (16) rotation respectively
Described fixed friction wheel (7) is arranged on the other end of the described short heavy burden arm of force (4) relative with the described long heavy burden arm of force (3) by fixed screw (10), and described fixed friction wheel (7) contacts with described pivoting friction wheel (2) face arranging thereunder.
19. frictional testing machines as claimed in claim 18 (100), it is characterized in that, load-bearing cutting edge (9) adjustable ground of described frictional testing machine (100) is arranged on one end of the close described short heavy burden arm of force (4) of the described long heavy burden arm of force (3), and by regulating described load-bearing cutting edge (9) to make in the time not loading described counterweight (5), the described fixed friction wheel (7) being arranged on the described short heavy burden arm of force (4) steadily contacts mutually with the described pivoting friction wheel (2) that is arranged on described fixed friction wheel (7) below.
20. frictional testing machines (100) as described in one of claim 13 to 19, it is characterized in that, the temperature probe of described temperature sensor (12) is arranged between 1/4～1/2 height of described Sheng oil box (11), make described temperature sensor (12) in the situation that not being affected by the external environment, the temperature variation of Measurement accuracy lubricating oil sample.
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- 2014-04-21 CN CN201510955394.0A patent/CN105572033B/en not_active Expired - Fee Related
- 2014-04-21 CN CN201510955444.5A patent/CN105572325B/en active Active
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|---|---|---|---|---|
| US10281388B2 (en) | 2015-12-18 | 2019-05-07 | Ducom Instruments Pvt. Ltd. | Tester to estimate co-efficient of friction and determine properties of a sample lubricant |
| CN106546701A (en) * | 2016-11-02 | 2017-03-29 | 武汉轻工大学 | According to the method for principle of isotone rapid screening antifriction antiwear lube oil additive |
| CN108527440A (en) * | 2017-03-03 | 2018-09-14 | 发那科株式会社 | Life assessment device and robot system |
| CN108527440B (en) * | 2017-03-03 | 2019-06-04 | 发那科株式会社 | Life assessment device and robot system |
| US11578834B2 (en) | 2017-03-03 | 2023-02-14 | Fanuc Corporation | Life evaluating device and robot system |
| US12049983B2 (en) | 2017-03-03 | 2024-07-30 | Fanuc Corporation | Life evaluating device and robot system |
| CN109991112A (en) * | 2019-02-20 | 2019-07-09 | 广西柳工机械股份有限公司 | The vehicle evaluation method of lubricating grease extreme-pressure anti-wear ability |
| CN109991112B (en) * | 2019-02-20 | 2021-03-26 | 广西柳工机械股份有限公司 | Complete vehicle evaluation method for extreme pressure anti-wear capability of lubricating grease |
| US11921090B2 (en) | 2019-02-20 | 2024-03-05 | Guangxi Liugong Machinery Co., Ltd. | Whole-vehicle-based method for evaluating extreme pressure and antiwear properties of grease |
| CN112595839A (en) * | 2020-11-26 | 2021-04-02 | 广州机械科学研究院有限公司 | Method for selecting engine oil under pollution state |
| CN112595839B (en) * | 2020-11-26 | 2022-04-08 | 广州机械科学研究院有限公司 | Method for selecting engine oil under pollution state |
| CN115561436A (en) * | 2022-12-02 | 2023-01-03 | 江苏科馨达新材料科技有限公司 | Lubricating effect evaluation method and system for lubricating oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105572325B (en) | 2017-06-23 |
| CN103901184B (en) | 2016-01-20 |
| CN105572325A (en) | 2016-05-11 |
| CN105572033B (en) | 2018-01-23 |
| CN105572033A (en) | 2016-05-11 |
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