Petroleum and related products - Determination of anti-wear properties of hydraulic fluids - Vane pump method (ISO 20763:2004)

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Mineralölerzeugnisse und verwandte Produkte - Bestimmung des Verschleißschutzvermögens von Druckflüssigkeiten - Prüfung in der Flügelzellenpumpe (ISO 20763:2004)

Diese Internationale Norm beschreibt ein Verfahren zur Bestimmung des Stahl-auf-Stahl Verschleißschutz-verhaltens von Hydraulikflüssigkeiten durch mechanische Prüfung in einer Flügelzellenpumpe. Die Norm umfasst einen Bereich von Hydraulikflüssigkeiten, sowohl wasserfreie als auch wasserhaltige, die zur Anwendung bei Gleitstellen mit hohen Gleitgeschwindigkeiten vorgesehen sind, so wie sie in einer Flügelzellenpumpe vorkommen.
Für Mineralöle der Kategorien HM und HV, und für schwerentflammbare Flüssigkeiten der Kategorie HFD ist das Verfahren auf die folgenden Viskositätsklassen anwendbar, wie in ISO 3448 [1] festgelegt: ISO VG 32, ISO VG 46 und ISO VG 68; und unter anderen Anforderungsbedingungen ist das Verfahren auf wasserhaltige schwerentflammbare Hydraulikflüssigkeiten der Kategorien HFA, HFB und HFC anzuwenden, wie in ISO 12922 [3] festgelegt, und zwar in den gleichen Viskositätsklassen.
ANMERKUNG   Viskositätsklassen unter ISO VG 32 und über ISO VG 68 können mit dieser Technik geprüft werden, sie erfordern jedoch andere Bedingungen für die Pumpeneingangsviskosität und sind noch nicht in ausreichendem Maße ausgewertet worden. Diese Internationale Norm ist auf die definierten festgelegten Grenzwerte beschränkt.

Pétrole et produits connexes - Détermination des propriétés anti-usure des fluides hydrauliques - Méthode de la pompe a palettes (ISO 20763:2004)

L'ISO 20763:2004 spécifie des méthodes pour déterminer les propriétés anti-usure, acier sur acier, des fluides hydrauliques à l'aide d'une pompe hydraulique à palettes. L'ISO 20763:2004 s'applique à une gamme de fluides hydrauliques, tant anhydres qu'aqueux, utilisés pour les contacts glissants à grande vitesse, comme on en trouve dans les pompes à palettes.
Pour les huiles minérales des types HM et HV et les fluides difficilement inflammables du type HFD, la méthode est applicable aux classes de viscosité ISO VG 32, ISO VG 46 et ISO VG 68, définies par l'ISO 3448. La méthode est également applicable, dans des conditions différentes spécifiées, aux huiles hydrauliques difficilement inflammables des types HFA, HFB et HFC définis par l'ISO 12922, et pour les mêmes classes de viscosité.

Nafta in sorodni proizvodi – Določanje protiobrabnih lastnosti hidravličnih tekočin – Metoda s krilno črpalko (ISO 20763:2004)

General Information

Status
Published
Publication Date
31-Oct-2004
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Nov-2004
Due Date
01-Nov-2004
Completion Date
01-Nov-2004

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SLOVENSKI STANDARD
SIST EN ISO 20763:2004
01-november-2004

1DIWDLQVRURGQLSURL]YRGL±'RORþDQMHSURWLREUDEQLKODVWQRVWLKLGUDYOLþQLKWHNRþLQ

±0HWRGDVNULOQRþUSDONR ,62

Petroleum and related products - Determination of anti-wear properties of hydraulic fluids

- Vane pump method (ISO 20763:2004)
Mineralölerzeugnisse und verwandte Produkte - Bestimmung des

Verschleißschutzvermögens von Druckflüssigkeiten - Prüfung in der Flügelzellenpumpe

(ISO 20763:2004)

Pétrole et produits connexes - Détermination des propriétés anti-usure des fluides

hydrauliques - Méthode de la pompe a palettes (ISO 20763:2004)
Ta slovenski standard je istoveten z: EN ISO 20763:2004
ICS:
75.120 +LGUDYOLþQLIOXLGL Hydraulic fluids
SIST EN ISO 20763:2004 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 20763:2004
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SIST EN ISO 20763:2004
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SIST EN ISO 20763:2004
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SIST EN ISO 20763:2004
INTERNATIONAL ISO
STANDARD 20763
First edition
2004-07-01
Petroleum and related products —
Determination of anti-wear properties of
hydraulic fluids — Vane pump method
Pétrole et produits connexes — Détermination des propriétés anti-usure
des fluides hydrauliques — Méthode de la pompe à palettes
Reference number
ISO 20763:2004(E)
ISO 2004
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SIST EN ISO 20763:2004
ISO 20763:2004(E)
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Published in Switzerland
ii ISO 2004 – All rights reserved
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SIST EN ISO 20763:2004
ISO 20763:2004(E)
Contents Page

1 Scope .................................................................................................................................................... 1

2 Normative references .......................................................................................................................... 1

3 Principle ................................................................................................................................................ 1

4 Reagents and materials ...................................................................................................................... 2

5 Apparatus ............................................................................................................................................. 2

6 Samples and sampling ........................................................................................................................ 6

7 Preliminary test .................................................................................................................................... 6

8 Preparation of apparatus .................................................................................................................... 6

9 System flushing and cleaning ............................................................................................................ 6

10 Preparation of cartridge for test ......................................................................................................... 7

11 Procedure ............................................................................................................................................. 7

12 Expression of results .......................................................................................................................... 9

13 Precision ............................................................................................................................................... 9

14 Test report ............................................................................................................................................ 9

Annex A (normative) Test cartridge component selection, preparation and assembly ...................... 10

Annex B (informative) Test cartridge suppliers ....................................................................................... 16

Bibliography ............................................................................................................................................... 17

ISO 2004 – All rights reserved iii
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SIST EN ISO 20763:2004
ISO 20763:2004(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International

Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 20763 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants.

iv ISO 2004 – All rights reserved
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SIST EN ISO 20763:2004
INTERNATIONAL STANDARD ISO 20763:2004(E)
Petroleum and related products — Determination of anti-wear
properties of hydraulic fluids — Vane pump method

WARNING — The use of this International Standard may involve hazardous materials, operations and

equipment. This International Standard does not purport to address all of the safety problems

associated with its use. It is the responsibility of the user of this International Standard to establish

appropriate safety and health practices and determine the applicability of regulatory limitations prior to

use.
1Scope

This International Standard specifies procedures for the determination of steel-on-steel anti-wear properties of

hydraulic fluids by means of performance in a vane-type hydraulic pump. It covers a range of hydraulic fluids,

both anhydrous and aqueous, intended for applications where high-speed sliding contacts, such as those found

in a vane pump, are encountered.

For mineral oils of categories HM and HV, and fire-resistant fluids of category HFD, the method is applicable to

[1]

viscosity classes ISO VG 32, ISO VG 46 and ISO VG 68, as specified in ISO 3448 . Under different specified

conditions, the method is applicable to aqueous fire-resistant hydraulic fluids in categories HFA, HFB and HFC,

[3]
as specified in ISO 12922 , within the same viscosity classes.

NOTE Viscosity classes below ISO VG 32 and above ISO VG 68 can be tested by this technique, but require different

conditions of pump inlet viscosity, and have not been widely assessed. This International Standard is confined to the

specified limiting values defined.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced document

(including any amendments) applies.

ISO 3104:1994, Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity

and calculation of dynamic viscosity
ISO 3170:2004, Petroleum liquids — Manual sampling

ISO 3696:1987, Water for analytical laboratory use — Specification and test methods

ISO 4406:1999, Hydraulic fluid power — Fluids — Method for coding the level of contamination by solid

particles
3 Principle

Approximately 70 litres of the fluid under test is circulated for 250 h by a vane pump under conditions of output

flow, operational pressure and fluid temperature related to the type and viscosity grade of the fluid. At the end of

the test period, the mass loss of the 12 vanes and the ring on the test cartridge are determined. Measurement

of decrease in output flow during the test run, and mass loss of the two side bushings and the rotor are also

taken as control measures within the limiting test conditions, but the mass losses do not constitute a

requirement of method conformance.
ISO 2004 – All rights reserved 1
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SIST EN ISO 20763:2004
ISO 20763:2004(E)
4 Reagents and materials
4.1 Water, conforming to the requirements of grade 3 of ISO 3696.
4.2 Cleaning solvents
4.2.1 General

The choice of solvent in some applications will be related to the fluid under test or being removed from previous

tests, and the user shall select the most appropriate, related to his/her experience. Light hydrocarbon solvents

are chosen for the removal of oily residues, and oxygenated solvents for the removal of water-containing

residues. Acetone is specified as a high-volatility final rinse solvent, which also removes the last traces of water.

4.2.2 Light hydrocarbons, either heptane, 2,2,4-trimethylpentane or petroleum spirit having a boiling range

◦ ◦
essentially between 60C8 and 0 C.

4.2.3 Oxygenated hydrocarbons, either methanol, ethanol or propan-2-ol (isopropyl alcohol).

4.2.4 Acetone, of commercial grade.
4.2.5 1,2-Propyleneglycol (propandiol), of 99 % minimum purity.

4.3 Abrasive stone, of fine grade for removing sharp edges and burrs from all steel cartridge parts.

4.4 Abrasive cloth or paper, including fine grade 2/0 (approximately 27µm grit size [European grade

P1 200]) and coarser grades including and grit size (grades P360 and P320) as required.

37µm53µm
5 Apparatus

5.1 Test rig, consisting of a hydraulic circuit as illustrated in Figure 1. Pipes and fittings shall include facilities

so that the rig can be bled free of air and the test fluid can be completely drained. The major components of the

rig are given in 5.1.1 to 5.1.12. The rig shall be protected by means of automatic cut-off covering the electrical

circuits to the motor and limiting values for temperature, pressure and fluid level.

WARNING — The test rig operates at high pressures and temperatures, and the automatic protection

devices should be regularly tested for appropriate cut-off performance.

5.1.1 Fluid reservoir, constructed of corrosion-resistant material with a sealed lid and fitted pressure-relief

valve, and capable of holding the test fluid volume of 70 litres with the fluid level approximately 500 mm above

the pump inlet. An illustration of a suitable reservoir is given in Figure 2.

5.1.2 Vane pump, Vickers, of type V-104-C-10 or V-105-C-10 . The seals of the pump shall be compatible

with the fluid type/test temperature conditions of the test. The main shaft, seals and ball bearings of the pump

shall be replaced after five runs or when any signs of wear, as evidenced by test conditions, is apparent.

NOTE The life of the main shaft and ball bearings is decreased when testing aqueous fluids.

5.1.3 Test cartridge

The availability of test cartridges and components is under review following the decision of Eaton (formerly

Vickers) to discontinue manufacturing these as separate items. See Annex B for the position at the time of

publication of this International Standard.

5.1.4 Drive motor, with a rated power minimum of 11 kW, and a rated speed of 1 440 r/min± 50 r/min.

1) This information is given for the convenience of users of this International Standard and does not constitute an

endorsement by ISO of these products.
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SIST EN ISO 20763:2004
ISO 20763:2004(E)
Dimensions in millimetres
Key
1 reservoir
2 drainage valve
3 level above pump inlet
4pipe 28× 2
5 ball valve
6 suction pressure gauge
7 temperature meter (test temperature)
8 vane pump
9 electric motor
10 pipe 25× 5
11 test pressure gauge
12 relief valve
13 return filter
14 flow meter
15 cooling water regulator
16 fluid cooler
17 temperature controller
Figure 1 — Test rig layout
ISO 2004 – All rights reserved 3
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SIST EN ISO 20763:2004
ISO 20763:2004(E)
Dimensions in millimetres
Figure 2 — Illustrative fluid reservoir
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SIST EN ISO 20763:2004
ISO 20763:2004(E)
Key
1 butterfly nut M8
2 cover seal (rubber)
3 bore for liner (temperature sensor)
4pipe 22× 2
28× 2
5pipe
6 sleeve for oil drainage
Figure 2 — Illustrative fluid reservoir (continued)

5.1.5 Heat exchanger, fitted with control equipment to maintain the test fluid at the specified test temperature

± 2 C before the pump.

NOTE A shell-and-tube-type heat exchanger is recommended with the connections in reverse (the fluid passed through the

tubes) to facilitate effective cleaning between tests (see Clause 9).
5.1.6 Pipework

5.1.6.1 The pipe or hose compatible with the fluid under test, between the outlet of the reservoir and the pump,

shall be of nominal 28 mm outside diameter with 2 mm wall thickness. It shall be fitted with a ball valve and

connections to accommodate a suction pressure gauge (5.1.9) and a temperature sensor (5.1.10). Similar pipe

or hose is suitable for the pipework from the outlet of the relief valve to the reservoir (5.1.1). This length shall be

fitted with a filter (5.1.8) and a heat exchanger (5.1.5) and connections to accommodate instruments to

measure fluid flow and temperature.

5.1.6.2 The pipe between the pump and the relief valve (5.1.7) shall be of 25 mm nominal outside diameter

with 5mm wall thickness. This length shall be fitted with a connection to accommodate a test pressure gauge

(5.1.13).
5.1.7 Relief valve, with a rating of 17 MPa.

5.1.8 Filter, with an element of material compatible with the fluid under test. The filter shall be fitted with a

contamination meter and bypass to give a solid contaminant code of 15/11 according to ISO 4406, or better.

[4]

NOTE This purity class makes as a condition a separation degree of β = 75 as described in ISO 16889 .

5.1.9 Suction pressure gauge, with a range of 90 kPa to 105 kPa (absolute).
◦ ◦ ◦

5.1.10 Temperature sensor, with a range of 0 C to 100 C and an accuracy of ± 0,1 C.

5.1.11 Flowmeter, capable of measuring the flow of the test fluid within the range of 10 l/min to 45 l/min, with

an accuracy of ± 1 l/min or better.

5.1.12 Test-conditions monitoring system, which may be an analogue or digital readout, but is normally an

electronic logger or data printout.

The conditions of temperature, pressure and fluid level and fluid flow shall be monitored and recorded

continuously throughout the test, and a suitable indicating system shall therefore be installed and linked to the

automatic cut-off.

5.1.13 Test pressure gauge, with a range of 1 MPa to 16 MPa and a precision of 0,6 % of the measuring

range value.

5.2 Timers, either electronic or manual, capable of measuring up to 60 min with an accuracy of ±2s, and a

timer, or time switch, capable of measuring 250 h± 0,5 h.

5.3 Analytical balance, of capacity 200 g minimum, capable of weighing to the nearest 1 mg.

ISO 2004 – All rights reserved 5
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SIST EN ISO 20763:2004
ISO 20763:2004(E)

5.4 Torque wrench, capable of measuring torque in the range 0Nm to 20Nm, with an analogue indicator and

drag pointer.

5.5 Ultrasonic cleaning bath, of a capacity capable of accommodating the components of the test cartridge

(5.1.3).

5.6 Finishing plate, clean and flat, of hardened steel, large enough to accommodate the cartridge liners for

polishing.
6 Samples and sampling

6.1 Unless otherwise specified, samples shall be obtained by the procedures described in ISO 3170.

6.2 The laboratory sample size for this test is unusually large, with approximately 100 litres required for a

single test run. Unless otherwise specified, or volume constrained, a sample of a full 205 litre drum shall be

taken.
7 Preliminary test

7.1 Determine the kinematic viscosity of the test fluid at , in accordance with ISO 3104, and at least one

40 C
◦ ◦

other temperature at a minimum of 20C4 above or below 0 C. Select the temperatures to span the required

operational viscosity.

7.2 Plot the viscosities on a standard viscosity-temperature sheet (log-log diagram) and determine the

2 2

temperature required for the operational viscosity (13 mm /s for anhydrous fluids or 30 mm /s for aqueous

fluids).
8 Preparation of apparatus

8.1 Drain off any fluid remaining from the previous test run and remove and responsibly dispose of the filter

element. Check that all seals in the system are sound, and compatible with the type of fluid to be tested, and

replace as necessary.

8.2 Clean all parts of the test rig that come into contact with test fluid with light hydrocarbon (4.2.2) for

anhydrous fluids, or a mixture of equal volumes of 1,2-propyleneglycol (4.2.5) and water (4.1) for aqueous

fluids. Carry out rigorous cleaning before and after the test. Where possible, use separate pump stands for

testing anhydrous and aqueous fluids.

8.3 Carry out the flushing procedure appropriate to the fluid type described in Clause 9.

9 System flushing and cleaning
9.1 Procedure for anhydrous fluids

9.1.1 Select a good quality, previously used cartridge, dip it into the test fluid or flushing fluid, and fit it into the

pump. Fit the cover plate to the pump and tighten the screws evenly in the order of 1, 5, 3, 7, 2, 6, 4, 8 with the

torque wrench (5.4) to a maximum of 2N·m. Check that the pump can be turned freely by hand. Fit a new filter

element (5.1.8).
9.1.2 Charge the system with 8 litres to 10 litres of flushing fluid.

NOTE The flushing fluid can be a medium volatility hydrocarbon, such as kerosine or white spirit, or an anhydrous fluid

similar in characteristics to that to be tested.

For the flushing procedure, the use of a replaceable reservoir of lower capacity can be used. If the standard

reservoir is used, a displacer can be inserted to reach a fluid level that ensures proper operation and avoids the

6 IS
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