CN107288957B - A method of restoring ceramic brick press with hydraulic oil viscosity and viscosity index (VI) - Google Patents
A method of restoring ceramic brick press with hydraulic oil viscosity and viscosity index (VI) Download PDFInfo
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- CN107288957B CN107288957B CN201710537602.4A CN201710537602A CN107288957B CN 107288957 B CN107288957 B CN 107288957B CN 201710537602 A CN201710537602 A CN 201710537602A CN 107288957 B CN107288957 B CN 107288957B
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- viscosity
- ceramic brick
- viscosity index
- brick press
- hydraulic oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/045—Compensating for variations in viscosity or temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Sealing Material Composition (AREA)
- Lubricants (AREA)
Abstract
The present invention discloses a kind of recovery ceramic brick press in the method with hydraulic oil viscosity and viscosity index (VI), hydraulic oil sample is acquired in the ceramic brick press course of work and measures viscosity, viscosity index (VI), when institute's viscosimetric decline 5% or viscosity index (VI) decline 10%, the low molecular polyisobutylene that volume fraction is 1.0%~2.0% and molecular weight is 1200~1375 is added into hydraulic oil.It can restore ceramic brick press hydraulic oil viscosity and viscosity index (VI) using the method, reduce ceramic brick press failure, improve production efficiency, reduce production cost.
Description
Technical field
The invention belongs to equipment lubrication and maintenance area, in particular to a kind of recovery ceramic brick press is with viscosity and viscosity
The method of index.
Technical background
Ceramic brick press is the core equipment of ceramic wall and floor bricks industry, and price is high, movement needs are accurate, to the matter of hydraulic oil
Amount requires very high.Viscosity is the main indicator of ceramic brick press hydraulic oil, is to determine its secondary internal friction, abrasion and lubricating status
Key.It is found in production, its viscosity can decline ceramic brick press in use for some time, cause pump, hydraulic valve, oil cylinder etc.
Oil liquid leakage loss occurs for position, secondary (such as: the master cylinder system motion contact surface) oil film that rubs it is thinning in addition oil film can not be formed and
The abrasion such as it is subjected to dry friction and causes piston, oil cylinder, sealing element.The abrasion as caused by dry friction can make sealing element damage and lose
Effect, leads to oil leak, it is also possible to cause hydraulic oil jet stream, erosion piston rod and sealing element etc..Therefore, maintain hydraulic oil viscosity steady
It is fixed, for reduce the failure of ceramic brick press, prolong its service life it is very necessary.
Summary of the invention
The object of the present invention is to provide a kind of recovery ceramic brick press in the method with hydraulic oil viscosity and viscosity index (VI), with
Equipment fault is reduced, maintenance cost is reduced and is prolonged its service life.
Above-mentioned purpose that the invention is realized by the following technical scheme.
A method of restoring ceramic brick press with hydraulic oil viscosity and viscosity index (VI), includes the following steps:
(1) condition that viscosity index improver is added is determined: simultaneously from the place's of draining the oil acquisition oil sample in ceramic brick press operation
Survey its viscosity and viscosity index (VI), surveyed oil sample viscosity compared with fresh oil reduce by 5% or viscosity index (VI) compared with fresh oil reduce by 10%, then need to
Viscosity index improver is added in hydraulic oil in use；
(2) it determines the volume that viscosity index improver is added: viscosity index improver is added in the hydraulic oil in using
Volume be V=X × V0, V0 be ceramic brick press fuel load, X be viscosity index improver volumetric concentration, in the range of
1.0~2.0%；
(3) so that ceramic brick press is stopped working, drain line is then connected at ceramic brick press fuel outlet valve, export volume is about
Then the hydraulic oil of 9%V0 is added the viscosity index improver that volume is V, is uniformly mixed；
(4) mixed oil liquid described in step (3) is injected back into ceramic brick press with oiling trolley, and guarantees to enter ceramics pressure brick
The oil cleanliness of machine is not less than NAS8 grades, is then turned on ceramic brick press, makes its running no load 20min, then make ceramic pressure
Brick machine is worked normally.
Further, used viscosity index improver is low molecular weight polyisobutene.
Further, the volumetric concentration of the low molecular weight polyisobutene is 1.6%.
Further, the molecular weight of the low molecular weight polyisobutene is 1200~1375.
The polyisobutene that molecular weight is 1200~1375, in low temperature, its long-chain molecule is shrunk to bulk substantially, to oil liquid
Viscosity influence it is smaller.As oil temperature increases, chain molecule is gradually unfolded, and increases the viscosity of oil liquid, and it is viscous to play increase oil liquid
Spend the effect of index.The polyisobutene that molecular weight is 1200~375 is colourless viscous liquid, non-toxic and tasteless, and chemical property is stablized,
It will not be chemically reacted with other substances in lubricating oil, there is good lubricity, viscosity is lower, under the conditions of 100 DEG C,
Its viscosity is 596~665mm2/ s, and have good miscible type with mineral base oil, so being easy to execute-in-place.In addition, molecule
Amount also has good hydrophobicity for 1200~1375 polyisobutene, and the oil-of ceramic brick press hydraulic oil is beneficial to after addition
The improvement of water stalling characteristic and resistance to emulsion.
Specific embodiment
The technical characterstic of this method is further illustrated below with reference to embodiment.
By taking a PH2890 type ceramic brick press as an example, the fuel load of the type ceramic brick press is 1100L, uses certain brand
46# antiwear hydraulic oil, measuring viscosity when this hydraulic oil is not used is 43.21mm2/ s, viscosity index (VI) 110.It was adopted every 60 days
Collect oil sample and carry out viscosity and viscosity index (VI) measurement, the results are shown in Table 1.
Table 1
As it can be seen from table 1 hydraulic oil is using after 220 days, viscosity has dropped 6.3% relative to new oil viscosity, glues
Index decreased 8.1% is spent, while checking discovery oil cylinder oil leakage phenomenon, press power is declined, therefore makes ceramic pressure immediately
Brick machine stops working, and drain line is then connected at ceramic brick press fuel outlet valve, exports the liquid of volume about 9% × 1100L=99L
Then pressure oil is added the viscosity index improver that volume is 1100L × 1.6%=17.6L, is passed through after mixing evenly with blender
Mixed oil liquid is filled back ceramic brick press by oiling trolley, and guarantees the oil cleanliness into ceramic brick press not less than NAS8
Grade starts ceramic brick press, is normally carried out compacting work after making its sky load operation 20min, then acquires crude oil sample analysis viscosity
And viscosity index (VI), respectively 42mm2/ s and 121, has arrived at normal operating level.Used viscosity index improver is low
Molec weight polyisobutylene, and molecular weight is 1200~1375.After viscosity index improver is added, drawing oil sample every 60 days, it is viscous to survey it
Degree and viscosity index (VI), the result is shown in tables 1, and observe discovery oil cylinder oil leakage phenomenon and disappear.
Claims (4)
1. a kind of recovery ceramic brick press is in the method with hydraulic oil viscosity and viscosity index (VI), which is characterized in that including following steps
It is rapid:
(1) it determines the condition that viscosity index improver is added: acquiring oil sample from the place of draining the oil in ceramic brick press operation and survey it
Viscosity and viscosity index (VI), surveyed oil sample viscosity compared with fresh oil reduce by 5% or viscosity index (VI) compared with fresh oil reduce by 10%, then need to using
In hydraulic oil in viscosity index improver is added；
(2) it determines the volume that viscosity index improver is added: the body of viscosity index improver being added in the hydraulic oil in using
Product is V=X × V0, and V0 is the fuel load of ceramic brick press, and X is the volumetric concentration of viscosity index improver, in the range of 1.0~
2.0%；
(3) so that ceramic brick press is stopped working, drain line is then connected at ceramic brick press fuel outlet valve, export volume 9%V0
Hydraulic oil, then be added volume be V viscosity index improver, be uniformly mixed；
(4) mixed oil liquid described in step (3) is injected back into ceramic brick press with oiling trolley, and guaranteed into ceramic brick press
Oil cleanliness is not less than NAS8 grades, is then turned on ceramic brick press, makes its running no load 20min, then make ceramic brick press
It is worked normally.
2. a kind of recovery ceramic brick press according to claim 1 is in the method with hydraulic oil viscosity and viscosity index (VI),
It is characterized in that, used viscosity index improver is low molecular weight polyisobutene.
3. a kind of recovery ceramic brick press according to claim 2 is in the method with hydraulic oil viscosity and viscosity index (VI), institute
The volumetric concentration for stating low molecular weight polyisobutene is 1.6%.
4. a kind of recovery ceramic brick press according to claim 2 is in the method with hydraulic oil viscosity and viscosity index (VI),
It is characterized in that, the molecular weight of the low molecular weight polyisobutene is 1200~1375.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537602.4A CN107288957B (en) | 2017-07-04 | 2017-07-04 | A method of restoring ceramic brick press with hydraulic oil viscosity and viscosity index (VI) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537602.4A CN107288957B (en) | 2017-07-04 | 2017-07-04 | A method of restoring ceramic brick press with hydraulic oil viscosity and viscosity index (VI) |
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| Publication Number | Publication Date |
|---|---|
| CN107288957A CN107288957A (en) | 2017-10-24 |
| CN107288957B true CN107288957B (en) | 2019-03-19 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1216510A (en) * | 1967-01-10 | 1970-12-23 | Sinclair Research Inc | Process for improving the viscosity index of a lubricating oil fraction |
| CN101693385A (en) * | 2009-10-23 | 2010-04-14 | 佛山科学技术学院 | Hydraulic ceramic brick press and method for prolonging service life of hydraulic oil |
| CN102703173A (en) * | 2012-06-27 | 2012-10-03 | 上海三一重机有限公司 | Efficient hydraulic oil with high viscosity indexes |
| CN102998217A (en) * | 2012-11-08 | 2013-03-27 | 三一重机有限公司 | Method for judging whether hydraulic oil of cylinder is replaced and engineering machinery |
-
2017
- 2017-07-04 CN CN201710537602.4A patent/CN107288957B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1216510A (en) * | 1967-01-10 | 1970-12-23 | Sinclair Research Inc | Process for improving the viscosity index of a lubricating oil fraction |
| CN101693385A (en) * | 2009-10-23 | 2010-04-14 | 佛山科学技术学院 | Hydraulic ceramic brick press and method for prolonging service life of hydraulic oil |
| CN102703173A (en) * | 2012-06-27 | 2012-10-03 | 上海三一重机有限公司 | Efficient hydraulic oil with high viscosity indexes |
| CN102998217A (en) * | 2012-11-08 | 2013-03-27 | 三一重机有限公司 | Method for judging whether hydraulic oil of cylinder is replaced and engineering machinery |
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| CN107288957A (en) | 2017-10-24 |
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Granted publication date: 20190319 Termination date: 20210704 |