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1、INTERNATIONAL STANDARD IS0 I1 007 First edition 1997-06-1 5 Petroleum products and lubricants - Determination of rust-prevention characteristics of lubricating greases Produits ptroliers et lubrifiants - Dtermination des caractristiques antirouille des graisses lubrifiantes This material is reproduc
2、ed from IS0 documents under International Organization for Standardization (ISO) Copyright License number IHSIICCII 996. Not for resale. No part of these IS0 documents may be reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of us
3、e, or with the prior written consent of IS0 (Case postale 56,1211 Geneva 20, Switzerland, Fax +41 22 734 10 79), IHS or the IS0 Licensors members. Reference number IS0 1 1 007: 1997( E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Tech
4、nical Standards 1/9972545001 Not for Resale, 04/24/2007 23:09:16 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1 1007:1997(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation o f national standards bodies (IS0 member bodies).
5、 The work of preparing International Standards is normally carried out through IS0 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. Intemational organizations, governmental and non-g
6、overnmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters o f electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies f
7、or voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 11 007 was prepared by Technical Committee ISOTTC 28, Petroleum products and lubricants. Annexes A and B of this International Standard are for infor
8、mation only. Q IS01997 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization
9、for Standardization Case postale 56 CH-1 21 1 Genve 20 Switzerland Internet central O iso.ch X.400 c=ch; a4Onet; p=iso; o=isocs; sxentral Printed in Switzerland II Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972
10、545001 Not for Resale, 04/24/2007 23:09:16 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD 0 IS0 IS0 11 007:1997(E) Petroleum products and lubricants - Determination of rust-prevention Characteristics of lubricating greases WARNING - The use of this I
11、nternational Standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the
12、applicability of regulatory limitations prior to use. 1 Scope This International Standard specifies a method for the determination of the rust-prevention characteristics of lubricating grease in the presence of an aqueous test fluid. 2 Normative references The following standards contain provisions
13、which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibil
14、ity of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 15:1901, Rolling bearings - Radial bearings - Boundary dimensions - General pian. IS0 648: 1977, Laboratory glassware - One-mark pipett
15、es. IS0 3696: 1987, Water for analytical laboratory use - Specification and test methods. IS0 3030: 1903, Crude petroleum and liquid or solid petroleum products - Determination of density or relative density - Capillary-stoppered p yknometer and graduated bicapiilary pyknometer methods. IS0 71 20: 1
16、987, Petroleum products and lubricants - Petroleum oils and other fluids - Determination of rust-preventing characteristics in the presence of water. 3 Principle A test portion of grease is run in a specialized and carefully cleaned test rig under prescribed conditions for a total of 24 h, in three
17、separate 8 h periods, after introduction of an aqueous test fluid. At the end of the test period, the apparatus is dismantled and the condition of the outer ring track of the bearing is examined for corrosion and rated on an arbitrary scale. 4 Reagents and materials During the analysis, use only rea
18、gents of recognized analytical grade. 4.1 aromatic, low volatility hydrocarbon. Wash solvent, consisting of low-sulfur, low NOTE 1 White spirit to British Standard BS 245 or mineral spirit to ASTM D 235 (all classes) is suitable (see annex B). 4.2 Water, conforming to grade 3 of IS0 3696. NOTE 2 Wat
19、er as defined in 4.2 is used as a wash solvent but water quality in the test fluids (4.3) is critical, and for these a different grade is specified. 4.3 Test fluid. Use one of the following types: a) water conforming to grade 2 of IS0 3696, or b) synthetic sea water conforming to the specification g
20、iven in IS0 7120, or 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 23:09:16 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1 1 007: 1997( E) c)
21、 an 0,5 mol/l solution of sodium chloride prepared using water conforming to grade 2 of IS0 3696, at a pH o f 8,0 to 8,2, by titration with sodium hydroxide solution. NOTE 3 Other water types can be used in this test, although the precision when using other water types has not been determined. It is
22、 recommended that the pH of other water types is determined before use. 4.4 Propan-2-01. 4.5 Ammonia solution, 3,2 mol/l concentration. NOTE 4 The ammonia solution is equivalent to a tenfold dilution of 35 % ammonia solution (p = 880 kg/m3) with water conforming to grade 3 of IS0 3696. This ammonia
23、concentration is critical to the results of the test. 4.6 Solvent rinse solution, consisting of nine volumes of propan-2-01 (4.4) mixed with one volume of ammonia solution (4.5). 4.7 Silver nitrate solution, O, 1 mol/l concentration. 4.8 Cloth, absorbent, lint-free. 4.9 Protective gloves, smooth, cl
24、ean polyvinyl chloride (PVC), or polyethylene, or nitrile, or latex. 4.10 Filter paper, any suitable absorbent grade. 5 Apparatus 5.1 Test rig, power-operated with all the test bearings mounted on a single shaft. The rig shall consist of a steel shaft coated with polyamide, and polyamide plummer blo
25、cks. NOTE 5 A suitable rig is detailed in annex A) 5.2 Test bearing: Use a double row self-aligning ball bearing (30 mm x 72 mm x 19 mm), conforming to 1306K of IS0 15, with a steel cage, specially inspected and packed to prevent rust. In cases of dispute, use the test bearing specified in note 6 as
26、 the referee bearing. NOTE 6 Precision has only been evaluated on SKF 13061/236 725 bearings. 5.3 Dentists mirror, no magnification. 5.4 Pipette, conforming to IS0 648, capacity 10 ml. IS0 5.5 Oven, capable of maintaining a temperature of 90 oc f 2 oc. 6 Preparation of apparatus 6.1 Remove all trace
27、s of grease from previous tests by wiping the plummer blocks. Wash the plummer blocks in solvent rinse solution (4.6) followed by water (4.2). Dry thoroughly using a cloth (4.8). Where previous tests have been carried out with either synthetic sea water or salt water, pour a few drops of silver nitr
28、ate solution (4.7) into the plummer block. Withdraw a sample of the silver nitrate solution using a clean pipette, and inspect for milkiness or a white precipitate. If a white precipitate appears, rinse the plummer block with hot water (4.2) and repeat this washing until a withdrawn sample is clear.
29、 6.2 Wear protective gloves (5.4) for all subsequent handling. Use two new bearings for each test. 6.3 Number the bearings on the outside diameter of the outer ring but do not use acid etching. NOTE 7 An electric pen, grounded (earthed) on the outer ring surface, is a suitable means of marking. 6.4
30、Wash the bearings in wash solvent (4.1) at 50 OC to 65 OC, to remove the rust-preventative. Repeat the wash using fresh portions of hot wash solvent until the rust-preventative has been completely removed. In cases of dispute, white spirit (note 1) is the referee solvent. NOTE 8 The complete removal
31、 of the rust-preventative is critical to the precision of this International Standard. Failure to remove the material wholly will invalidate results. 6.5 Transfer the bearings from the wash solvent to the solvent rinse solution (4.6) to remove any solvent remaining. Rinse the bearings and rotate the
32、 outer ring slowly relative to the inner ring, whilst the bearing is immersed in freshly-made solvent rinse solution heated to a minimum of 65 OC. CAUTION - The washing temperatures specified are significantly higher than the closed flash point of the solvent. Therefore carry out the washing operati
33、ons in a well-ventilated hood where no flames or other ignition sources are present. 1) A list of suppliers of suitable test rigs is available from ISO/TC 28 Secretariat. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standar
34、ds 1/9972545001 Not for Resale, 04/24/2007 23:09:16 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*ISO 11007-ENGL 1777 E 4851903 071355b 725 0 IS0 6.6 Remove the bearings from the solvent rinse solution and place on a filter paper (4.10) or cloth (4.8) to drain thoroug
35、hly. Place the bearings in the oven (5.5) until completely dry. This requires a minimum of 15 min. 6.7 Remove the bearings from the oven and allow to cool to ambient temperature. Examine the surfaces to ensure that each bearing is corrosion-free and free-turning. WARNING - Take care not to spin the
36、bearings after cleaning and drying. 6.8 Inspect the outer ring tracks using a dentists mirror (5.3). If etch spots or corrosion are evident, reject the bearing. 6.9 Determine the mass of grease, rn, in grams, equivalent to 10,5 ml f 0,l ml using the following equation : rn = p v where p is the densi
37、ty cubic metre; f the grease, in kilograms per V is the volume, = 10,5 ml = 0,0105 I If the density of the grease is not known, it shall be determined using a pyknometer method such as that given in IS0 3838, or another standardized procedure. Weigh the clean bearing, then distribute 10,5 ml t- 0,l
38、ml of grease evenly in each test bearing, as determined by the mass gain of the bearing. Take particular care to ensure that the outer raceway is completely coated. 6.10 Place the adaptor sleeves, bearings and V-ring seals in position on the shaft and finger-tighten the sleeve nuts. Carry out the op
39、eration with the shaft suitably supported on the work bench. 6.11 Place the shaft complete with greased bearings in position in the rig, taking care that the bearings are central in the plummer blocks. 6.12 Place the top halves of the plummer blocks in position and finger-tighten the locking screws.
40、 7 Procedure IS0 1 1007: 1997( E) NOTE 9 The precision data was generated under these ambient conditions. 7.1 Run the rig for 30 min at 8,7 rad/s f 0,5 rad/s (83 revhin f 5 revhin) immediately after assembly to distribute the grease evenly. NOTE 10 Whilst 80 revlmin (8,4 radls) is the preferred rig
41、speed, instruments are available that run at 80 revimin and 85 revlmin. These two speeds have been demonstrated to give equivalent results. Hence the specification is 83 revlmin k 5 rev/min (8,7 radls 2 0,5 rad/s) as given in annex A. 7.2 Remove the top halves of the plummer blocks and introduce 10
42、ml of the chosen test fluid (4.3) into each side of each plummer block using the pipette (5.4) (.e. a total of 20 ml). Refit the top halves of the plummer blocks and screw down finger-tight. 7.3 a) Run the rig for 8 h t- 10 min. Stop the rig and allow to stand for 16 h i 10 min. b) Run the rig for a
43、 further 8 h i 10 min. Stop the rig and allow to stand for 16 h k 1 O min. c) Run the rig for a further 8 h i 10 min. Stop the rig and allow to stand for 108 h t 2 h. 7.4 Carry out 7.2 and 7.3 with minimum delay. As soon as the shaft of the rig begins to rotate (7.3 a), press the V-ring (face) seals
44、 up against the plummer blocks using the special tool shown as (7) in figure A.11. 8 Dismantling the apparatus 8.1 Remove the top halves of the plummer blocks. Lift the shaft and bearings on to a suitable support on the work bench. 8.2 Remove the bearings and V-ring seals from the shaft in the follo
45、wing manner: a) unscrew the sleeve nut one or two revolutions; b) tap the end face of the inner ring of the bearings lightly using a suitable tool such as a hammer and drift, and release the bearings from the tapered adaptor; c) pull the bearing, seals and sleeve off the shaft. Carry out duplicate d
46、eterminations at an ambient temperature of 15 O C to 25 OC. 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 23:09:16 MDTNo reproduction or networking permitted without license
47、from IHS -,-,- STD*ISO 33007-ENGL 11997 IS0 1 1 007: 1 997( E) 8.3 Wash the outer ring of the bearing out and lever a sufficient number of the balls out of the cage pockets, at diametrically opposite sides of the cage, thus allowing the cage to be dismantled. 8.4 Rinse the outer ring of the bearing
48、in the cleaning solvent rinse solution (4.61, and dry using a cloth (4.8). Examine the bearing immediately. 9 Inspection 9.1 Examine the outer ring track for rust or etch spots and evaluate the surface area (3 680 mm2) as specified in table 1, Ignore any staining through which the underlying metal s
49、urface is clearly visible. Table 1 - Evaluation of rust or etch spots Rating O 1 2 3 4 5 Degree of rusting No corrosion Not more than three small spots each just sufficient to be visible to the naked eye and less than 1 mm in diameter Small areas of corrosion covering up to 1 Yo of the surface Areas of corrosion covering between 1 % and 5 YO of the surface Areas of corrosion covering bet