1、Designation: D1742 06 (Reapproved 2013)D1742 18Standard Test Method forOil Separation from Lubricating Grease During Storage1This standard is issued under the fixed designation D1742; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope Scope*1.1 This test me
3、thod covers the determination of the tendency of a lubricating grease to separate oil during storage in bothnormally filled and partially filled containers.1.2 This test method is not suitable for greases softer than NLGI No. 1 grade.1.3 The values stated in SI units are to be regarded as standard,
4、except for the dimensions in Fig. 2 and Fig. 5, where inch-poundunits are standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healt
5、henvironmental practices and determine theapplicability of regulatory limitations prior to use. For a specific hazard statement, see 7.1.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles
6、for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves2.2 Other Standard:NLGI Grease Cons
7、istency Classification33. Terminology3.1 Definitions:3.1.1 lubricating grease, na semi-fluid to solid product of a thickener in a liquid lubricant.3.1.1.1 DiscussionThe dispersion of the thickener forms a two-phase system and immobilizes the liquid lubricant by surface tension and otherphysical forc
8、es. Other ingredients are commonly included to impart special properties.3.1.2 thickener, nin lubricating grease, a substance composed of finely-divided particles dispersed in a liquid lubricant to formthe products structure.3.1.2.1 DiscussionThe thickeners can be fibers (such as various metallic so
9、aps) or plates or spheres (such as certain non-soap thickeners), which areinsoluble or, at most, only very slightly soluble in the liquid lubricant. The general requirements are that the solid particles beextremely small, uniformly dispersed, and capable of forming a relatively stable, gel-like stru
10、cture with the liquid lubricant.1 This test method is under the jurisdiction of the ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee D02.G0.03 on Physical Tests.Current edition approved Dec. 1, 2013April 1, 2018. Published Decembe
11、r 2013May 2018. Originally approved in 1960. Last previous edition approved in 20062013 asD1742 06.D1742 06 (2013). DOI: 10.1520/D1742-06R13.10.1520/D1742-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of AS
12、TM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from NLGI, 4635 Wyandotte St., Kansas City, MO 64112.249 SW Noel, Suite 249, Lees Summit, MO 64063, http:/www.nlgi.org.This document is not an ASTM standard and is intended only to provide th
13、e user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standa
14、rd as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.3 oil separation, nthe appearance of a liquid fract
15、ion from an otherwise homogeneous lubricating composition.4. Summary of Test Method4.1 The sample of grease, supported on a 75-m75 m (No. 200) sieve, is subjected to 1.72 kPa (0.25 psi) 1.72 kPa (0.25 psi)air pressure for 24 h at 25C (77F).24 h at 25 C (77 F). Any oil seepage that occurs drains into
16、 a beaker and is weighed.5. Significance and Use5.1 When a lubricating grease separates oil, the remaining composition increases in consistency. This can affect the ability ofthe product to function as designed.5.2 It has been found that the results of this test correlate directly with the oil separ
17、ation that occurs in 35-lb35 lb pails of greaseduring storage.5.3 This test method is not intended to predict oil separation tendencies of the grease under dynamic conditions.6. Apparatus6.1 Test Apparatus4-6The assembled apparatus consists of a tightly fitting cup and cover which contains a 75-m75
18、m (No.200) sieve strainer for supporting the grease, a funnel for collecting separated oil, and a 20-mL20 mL beaker for retaining theseparated oil. A fitting is provided in the cover for inlet air (1.72 kPa (0.25 psi) (1.72 kPa (0.25 psi) and a hole is provided inthe side of the cup to prevent back
19、pressure. Fig. 1 is a photograph of a disassembled apparatus. The details of construction aregiven in Fig. 2. The 75-m75 m (No. 200) stainless steel sieve shall conform to the requirements of Specification E11. Thediameter of the 75 m 75 m (No. 200) sieve shall be 104.8 mm 104.8 mm (418 in.), in.),
20、completely clear with no solder showing.4 The sole source of supply of Pressure Bleeding Test Cell A known to the committee at this time is Koehler Instrument Company, Inc. 1595 Sycamore Avenue, Bohemia,NY 11716. If you are aware of alternative suppliers, please provide this information to ASTM Inte
21、rnational Headquarters. Your comments will receive careful considerationat a meeting of the responsible technical committee,1 which you may attend.5 The sole source of supply of the Pressure Bleeding Test Cell B known to the committee at this time is Stanhope-Seta, London Street, Chertsey, Surrey, K
22、T16 8AP, UK.If you are aware of alternative suppliers, please provide this information toASTM International Headquarters. Your comments will receive careful consideration at a meetingof the responsible technical committee,1 which you may attend.6 Equipment shown in Fig. 4 and Fig. 5 is no longer ava
23、ilable. Other appropriately designed equipment can be used.FIG. 1 Pressure Bleeding Test Cell AD1742 182in. mm in. mm in. mm in. mm0.0021 0.053 158 41.3 0.500 12.70 4716 112.70.0029 0.074 134 44.4 0.510 12.95 412 114.30.010 0.25 2 50.8 0.520 13.20 41116 119.1116 1.59 212 63.5 58 15.87 434 120.618 3.
24、17 31116 93.7 34 19.05 42632 123.03316 4.76 418 104.8 1 25.4 514 133.314 6.35 4.360 110.74 114 31.8 6 152.4516 7.94 4.365 110.87 138 34.9 612 165.138 9.52 438 111.1 3 76.2FIG. 2 Detailed Drawing of Pressure Bleeding Test Cell AD1742 1836.2 Air Pressure Supply and Regulation An air pressure supply, c
25、ontrolled by reducing valves or regulators, capable ofmaintaining air pressure at 1.721.72 kPa 6 0.07 kPa, 0.07 kPa, should be used.Amanometer, or other suitable pressure indicatingdevice, and a pressure relief valve to protect against pressure surge should be included in the pressure system.7. Reag
26、ents7.1 Mineral Spirits, (WarningWarningCombustible.Combustible. Vapor harmful.)8. Sampling8.1 The sample presented for analysis should be large enough to make possible the selection of a representative portion fortesting.8.2 Examine for any indication of non-homogeneity such as oil separation, phas
27、e changes or gross contamination. If anyabnormal conditions are found, obtain a new sample.9. Preparation of Apparatus9.1 Thoroughly clean the strainer, cup, and oil-collecting beaker with mineral spirits and follow by air drying.9.2 Carefully inspect the sieve to make certain that there is no build
28、-up which would affect the passage of oil. The sieve mustalso be free of any surface irregularities such as creases, dents, or punctures. Replace, if necessary.9.3 The funnel must be clean and free of any residues which can retard the flow of oil.9.4 Inspect the cover and cup for any dents or distor
29、tions to the mating surfaces which can interfere with a tight seal betweenthe units.9.5 When the O-ring seal shows wear it must be replaced.FIG. 3 Pressure Bleeding Test Cell BD1742 18410. Procedure10.1 Place the strainer, screen side up, in the funnel and tare the assembly to the nearest 0.05 g. 0.
30、05 g. By means of a spatula,completely fill the space between the screen and the top of the funnel with grease. The volume occupied by the grease shall havea depth of 12.760.3 mm (0.5060.01 in.). 12.7 mm60.3 mm (0.50 in.60.01 in.).Avoid unnecessary working and entrainmentof air. Use a straight edge
31、to remove excess grease and provide a level surface.Avoid forcing any of the grease through the screen.Determine the mass of the sample to the nearest 0.05 g.0.05 g.NOTE 1Care must be taken that the surface of the grease is level, without air pockets and surface dimples, especially when testing soft
32、er #1 gradegreases.10.2 Place the tared beaker in the positioning retainer at the center of the bottom cup, and assemble the entire apparatus asindicated in Fig. 1. By means of a suitable length of rubber tubing, connect the source of air to the air inlet fitting in the cover.10.3 Bring the apparatu
33、s and the sample to 2525 C 6 1C (771 C (77 F 6 2F).2 F). Before starting the test, regulate theair pressure to 1.72 6 0.07 kPa (0.25 6 0.01 psi) 1.72 kPa 6 0.07 kPa (0.25 psi 6 0.01 psi) and continue the test for 24 h 24 hat this pressure and temperature.10.4 At the end of the test, weigh the beaker
34、 containing the collected oil to the nearest 0.05 g 0.05 g and record.11. Report11.1 Report the mass of the oil separated as a percentage of the total mass of the grease sample. Record the value to the nearest0.1 %.12. Precision and Bias12.1 The precision of the test method is not known to have been
35、 obtained in accordance with currently accepted guidelines inCommittee D02 Research Report RR:D02-1007.77 Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:D02-1007. Contact ASTM CustomerService at serviceastm.org.FIG. 4 Pressure
36、Bleeding Test Cell CD1742 18512.1.1 Repeatability (Note 12) The difference between two test results, obtained by the same operator with the same apparatusunder constant operating conditions on identical test material, would in the long run, in the normal and correct operation of thetest method, exce
37、ed 0.1 M in only one case in twenty where:M 5mean of two determinations (1)in. mm in. mm in. mm in. mm0.0021 0.053 158 41.3 0.500 12.70 4716 112.70.0029 0.074 134 44.4 0.510 12.95 412 114.30.010 0.25 2 50.8 0.520 13.20 41116 119.1116 1.59 212 63.5 58 15.87 434 120.618 3.17 31116 93.7 34 19.05 42632
38、123.03316 4.76 418 104.8 1 25.4 514 133.314 6.35 4.360 110.74 114 31.8 6 152.4516 7.94 4.365 110.87 138 34.9 612 165.138 9.52 438 111.1FIG. 5 Detailed Drawing of Pressure Bleeding Test Cell CStrainer AssemblyD1742 18612.1.2 Reproducibility (Note 12) The difference between two single and independent
39、results obtained by different operatorsworking in different laboratories on identical test material would, in the long run, in the normal and correct operation of the testmethod, exceed 0.17 M in only one case in twenty:M 5mean of two determinations (2)NOTE 2These values of precision are based on re
40、sults by 10 laboratories using four greases that varied in consistency from NGLI Grade No. 1 toGrade No. 3.12.2 BiasThe procedure for measuring the oil separation from lubricating grease has no bias because the value of the oil lossis defined only in terms of a test method.13. Keywords13.1 lubricati
41、ng grease; oil bleed; oil separationSUMMARY OF CHANGESSubcommittee D02.G0 has identified the location of selected changes to this standard since the last issue(D1742 06 (2013) that may impact the use of this standard. (Approved April 1, 2018.)(1) Added new Note 1.ASTM International takes no position
42、 respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.T
43、his standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Int
44、ernational Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown
45、 below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 187
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