ASTM D1742-2018 Standard Test Method for Oil Separation from Lubricating Grease During Storage《润滑脂贮存过程中油分离的标准试验方法》.pdf
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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
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