1、July 2007DEUTSCHE NORM English price group 7No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 75.100!,yeG“9866636www.din
2、.deDDIN ISO 11009Petroleum products and lubricants Determination of water washout characteristics of lubricating greases(ISO 11009:2000)English version of DIN ISO 11009:2007-07Minerallerzeugnisse und Schmierstoffe Bestimmung der dynamischen Wasserbestndigkeit von Schmierfetten (ISO 11009:2000)Englis
3、che Fassung DIN ISO 11009:2007-07www.beuth.deDocument comprises 9 pages 10.07National foreword This standard has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants” (Secretariat: ANSI/API USA). The responsible German body involved in its preparation was the Normenaussc
4、huss Materialprfung (Materials Testing Standards Committee), Fachausschuss Minerall- und Brennstoffnormung, Technical Committee NA 062-06-62 AA (formerly NMP 662) Prfung von Schmierfetten. The DIN Standard corresponding to the International Standard referred to in clause 2 of this document is as fol
5、lows: ISO 3696 DIN ISO 3696 National Annex NA (informative) Bibliography ASTM D 235-02, Standard Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent) DIN 51632-1, Regular white spirit Requirements and testing DIN 51632-2, Low-aromatics white spirit Requirements an
6、d testing DIN ISO 3696, Water for analytical laboratory use Specification and test methods 2 DIN ISO 11009:2007-07 Petroleum products and lubricants Determination of waterwashout characteristics of lubricating greasesWARNING The use of this International Standard may involve hazardous materials, ope
7、rations andequipment. This International Standard does not purport to address all of the safety problems associatedwith its use. It is the responsibility of the user of this International Standard to establish appropriate safetyand health practices and determine the applicability of regulatory limit
8、ations prior to use.1 ScopeThis International Standard specifies a method for evaluating the resistance of a lubricating grease to washout bywater from a bearing, when tested at 38 C and 79 C under specified laboratory conditions.It is not to be considered the equivalent of service evaluation tests.
9、2 Normative referenceThe following normative document contains provisions which, through reference in this text, constitute provisions ofthis International Standard. For a dated reference, subsequent amendments to, or revisions of, the publications do notapply. However, parties to agreements based o
10、n this International Standard are encouraged to investigate thepossibility of applying the most recent edition of the normative document indicated below. For an undated reference,the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers ofcurrently v
11、alid International Standards.ISO 3696:1987, Water for analytical laboratory use Specification and test methods.3PrincipleThe grease is packed in a ball bearing. The bearing is then inserted in a housing with specified clearances, androtated at 63 rad/s Gb1 3 rad/s. Water, controlled at 38 C or 79 C,
12、 impinges on the bearing housing at a rate of 5 ml/sGb1 0,5 ml/s. The amount of grease washed out in 60 min is taken as a measure of the resistance of the grease to waterwashout.4 Reagents and materials4.1 Water, conforming to the requirements of grade 3 of ISO 3696.4.2 Cleaning solvent, consisting
13、of a low sulfur, low aromatic, low volatility hydrocarbon.NOTE White spirit according to British Standard BS 245 1 or mineral spirit according to ASTM D235 2 (all classes) aresuitable.3 DIN ISO 11009:2007-07 5 Apparatus1G295.1 Water washout apparatus, comprising a housing (5.3) with a spindle suppor
14、ted by two ball bearings (5.2)and a water-injection pump, which are rotated by means of an electrical motor(s), a water reservoir and a vanesystem to regulate the water flow rate through an injection nozzle, and a water heating system (5.4). Suitableapparatus is shown in Figure 1.Dimensions in milli
15、metresKey1 Tank size: approx. 150 mm Gb4 150 mm Gb4 150 mm2 Cover3 Thermometer4 Water-jet flow rate: 5 ml/s Gb1 0,5 ml/sthrough 1 mm G66 capillary5 Rotation speed of ball bearings:63 rad/s Gb1 3rad/s6 Thermostat7 750 ml (min.) of distilled water in reservoir belowthe bearing housing8 Heater9 Baffle1
16、0 Supply11 Flow-rate control valves12 Return13 Bypass14 Motor15 Fluid pump16 BaseFigure 1 Apparatus for determining water washout characteristics of lubricating greases1G29This apparatus is available from: the Precision Scientific Co., 3737 Cortland St., Chicago, IL, USA, Labline Inc., 3072-82 W.Gra
17、nt Ave., Chicago, IL-60622, USA, as catalogue No. 4165; and Stanhope-Seta, Park Close, Englefield Green, Egham, Surrey,TW20 0XD, UK as catalogue No. 19160. This information is given for the convenience of users of this International Standard anddoes not constitute an endorsement by ISO of these prod
18、ucts.4 DIN ISO 11009:2007-07 5.2 Ball bearing, size 6204 C3H.2G29NOTE 6204 C4 bearings may be used. However, precision has only been determined using SKF 6204 C3H bearings.5.3 Bearing housing and shield, with dimensions as shown in Figure 2.Dimensions in millimetresKey1 Centreline of capillary, G66
19、1mm2 Annular opening, 0,8 mm wide3 Test bearing of type 6204 C3HFigure 2 Typical cross-section of thrust-bearing assembly5.4 Heating source, to maintain the water temperature at 38 C Gb1 1,7 C or 79 C Gb1 1,7 C.NOTE A suitable temperature can be obtained by the use of immersion heaters, steam coils,
20、 or infrared heat lamps, inconjunction with transformers or thermostats.5.5 Thermometer or thermocouple, of adequate range, to determine the temperature of the water reservoir atGb1 1C.5.6 Timer, indicating tenths of a second.5.7 Watch glasses, of sufficient size to accomodate a test bearing and shi
21、eld.5.8 Graduated cylinder, of 100 ml capacity.5.9 Oven, natural convection type, capable of maintaining the specified drying temperature at Gb1 3C.5.10 Balance, capable of weighing to 1 mg.2G296204 C3H bearings are available from local suppliers or ASTM, 100 Barr Harbor Drive, West Conshohocken, PA
22、 19428-2959,USA, at nominal cost by specifying PCN 12-433360-12.5 DIN ISO 11009:2007-07 6 Sampling6.1 Each test will require a quantity of grease sufficient to fill two test bearings (approximately 4 g each).6.2 A minimum of 15 g of sample shall be supplied.6.3 Examine the sample for any indication
23、of non-homogeneity such as oil separation, phase changes, or grosscontamination. If any abnormal conditions are found, obtain a new sample.7 Preparation of apparatusClean the reservoir and water passages by flushing with water (4.1). Wipe off any oil scum which has been depositedon the surfaces of t
24、he reservoir. Clean the test bearing with cleaning solvent (4.2). Ensure that the water flow rate canbe maintained within the specified limits for a 60 min test run.8 Procedure8.1 Carry out the test in duplicate. Pack the tared bearing with 4,00 g Gb1 0,05 g of test grease. Insert the bearingand tar
25、ed shields into the housing, and assemble the unit in the test apparatus. Record the mass of the bearing,shields and grease, to the nearest 0,01 g.8.2 Add a minimum of 750 ml of preheated water (4.1) to the reservoir, but keep the water level below the bearinghousing by means of a piece of tubing at
26、tached to the capillary discharge tube or with a deflecting metal shield,until equilibrium temperature is attained. When the test is to be carried out at the higher temperature of 79 CGb1 1,7 C, bring the water to the specified temperature by a previously selected source of heat. If the rig has onem
27、otor driving both the pump and test bearing, remove the belt from the test-bearing spindle pulley during the waterwarm-up time.8.3 When the water reaches the specified temperature, adjust the by-pass valve to give a water-flow rate, throughthe rubber tubing and into the graduated cylinder (5.8), of
28、5 ml/s Gb1 0,5 ml/s. Determine the flow rate from thevolume of liquid flowing into the cylinder over a period of 10 s, as measured with the timer (5.6). Remove the rubbertubing from the discharge tube, and adjust the water jet so that it impinges on the shield 6,4 mm above the annularopening.8.4 Sta
29、rt the test and continue operation for 60 min Gb1 5 min from the moment when the rotational speed of thebearing reaches 63 rad/s Gb1 3rad/s.8.5 Shut off the motor and the heating source, if used. Remove the test bearing and shields and place them on atared watch glass (5.7). The shields shall be sep
30、arated from the bearing and placed with their inner faces upwardto expose the wet grease to the air.8.6 Dry the bearing and shields for 15 h at 77 C Gb1 6 C (see the note) in the oven (5.9), and then weigh to thenearest 0,01 g to determine the grease loss. The grease remaining on the shields, and an
31、y leakage occurringduring the drying period, should not be considered as grease lost.NOTE Some mass loss can be experienced for greases containing low-viscosity oils because of oil evaporation duringdrying. The drying temperature should be increased to 93 C Gb1 3 C for greases containing high-viscos
32、ity oils, to facilitateremoval of water during the time period specified.9 CalculationCalculate the loss in mass by water washout, w, expressed as a mass fraction, using the following equations.G44me= m2G2d m16 DIN ISO 11009:2007-07 G44ma= m3G2d m1eea100mmmwG44G44G2dG44Gb4G3dwherem1is the mass of th
33、e bearing and shields, in grams;m2is the mass of the grease, the bearing and shields before testing, in grams;m3is the mass of the grease, the bearing and shields after testing, in grams.10 Expression of resultsReport the average of duplicate tests as the percentage mass of grease washed out at the
34、test temperature, andindicate the temperature at which the bearing assembly and grease were dried. Round the mass percentage to thenearest whole percent.11 Precision11.1 GeneralThe precision, as determined by statistical examination of interlaboratory test results, is given in 11.2 and 11.3.11.2 Rep
35、eatability, rThe difference between two test results obtained by the same operator with the same apparatus under constantoperating conditions on identical test material would, in the long run, in the normal and correct operation of the testmethod, exceed the following values in only one case in twen
36、ty.At 38 C r =0,8(X +2)At 79 C r =0,6(X +4,6)where X is the average of two results given as mass fractions.11.3 Reproducibility, RThe difference between two single and independent test results obtained by different operators working in differentlaboratories on identical test material would, in the l
37、ong run, in the normal and correct operation of the test method,exceed the following values in only one case in twenty.At 38 C R =1,4(X +2)At 79 C R =1,1(X +4,6)where X is the average of two results given as mass fractions.7 DIN ISO 11009:2007-07 12 Test reportThe test report shall contain at least
38、the following information:a) a reference to this International Standard;b) the type and complete identification of the product tested;c) the results of the test (see clause 10);d) any deviation, by agreement or otherwise, from the procedure specified;e) the date of the test.8 DIN ISO 11009:2007-07 B
39、ibliography1 BS 245:1976, Specification for mineral solvents (white spirit and related hydrocarbon solvents) for paintsand other purposes.3)2 ASTM D 235-95, Standard Specification for Mineral Spirits (Petroleum spirits) (Hydrocarbon Dry CleaningSolvent).4)3) Obtainable from British Standards Institution, British Standards House, 389 Chiswick High Road, London, W4 4AL, UK.4) Obtainable from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, USA.9 DIN ISO 11009:2007-07
