1、Designation:D802220Standard Test Method forRoll Stability of Lubricating Grease in Presence of Water(Wet Roll Stability Test)1This standard is issued under the fixed designation D8022;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,t
2、he 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.1.Scope*1.1 This test method covers a procedure for determining theroll stability of lubricating grease in the presence of
3、water(wetroll stability)by using a roll stability test apparatus.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is the
4、responsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-
5、ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D217 Test Methods for Cone Penetration of LubricatingG
6、reaseD1193 Specification for Reagent WaterD1403 Test Methods for Cone Penetration of LubricatingGrease Using One-Quarter and One-Half Scale ConeEquipmentD1831 Test Method for Roll Stability of Lubricating GreaseD4057 Practice for Manual Sampling of Petroleum andPetroleum Products3.Terminology3.1 Def
7、initions:3.1.1 consistency,nof lubricating grease,degree of resis-tance to movement under stress.3.1.1.1 DiscussionThe term consistency is used somewhatsynonymously with penetration.Generally,consistency refersto the worked penetration of a grease.D2173.1.2 lubricating grease,nsemi-fluid to solid pr
8、oduct of adispersion of a thickener in a liquid lubricant.3.1.2.1 DiscussionThe dispersion of the thickener forms atwo-phase system and immobilizes the liquid lubricant bysurface tension and other physical forces.Other ingredients arecommonly included to impart special properties.D2173.1.3 penetrati
9、on,nof lubricating grease,the depth thatthe standard cone,when released to fall under its own weightfor 5 s,enters the sample.3.1.4 reduced-scale worked penetration,nof a lubricatinggrease,the penetration at 25 C(77 F),without delay,of asample after 60 double strokes in a14-scale or12-scale greasewo
10、rker.3.1.5 thickener,nin a lubricating grease,a substancecomposed of finely divided particles dispersed in a liquidlubricant to form the products structure.3.1.5.1 DiscussionThe thickener can be fibers(such asvarious metallic soaps)or plates or spheres(such as certainnon-soap thickeners)which are in
11、soluble or,at the most,onlyvery slightly soluble in the liquid lubricant.The generalrequirements are that the solid particles be extremely small,uniformly dispersed,and capable of forming a relatively stable,gel-like structure with the liquid lubricant.3.1.6 worked penetration,nof lubricating grease
12、,thepenetration at 25 C(77 F),without delay,of a sample after60 double strokes in a standard grease worker.3.1.7 working,nof lubricating grease,the subjection of asample to the shearing action of the standard grease worker.3.2 Definitions of Terms Specific to This Standard:3.2.1 wet roll stability,n
13、of lubricating grease,change inconsistency of a mixture of sample and small amount of waterafter a specified amount of rolling in a roll stability testapparatus.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct respon
14、sibility ofSubcommittee D02.G0.02 on Consistency and Related Rheological Tests.Current edition approved June 1,2020.Published September 2020.Originallyapproved in 2015.Last previous edition approved in 2015 as D8022 15.DOI:10.1520/D8022-20.2For referenced ASTM standards,visit the ASTM website,www.as
15、tm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C70
16、0,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.4.Summary of Test Method4.1 A grease sample mixed with a small amount of water issubjected to low shear at 20 C to 35 C for a specified tim
