1、Designation:D620306(Reapproved 2012)Standard Test Method forThermal Stability of Way Lubricants1This standard is issued under the fixed designation D6203;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A num
2、ber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the evaluation of the thermalstability of hydrocarbonbased way lubricants,although oxi-dation may occur during the tes
3、t.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-pri
4、ate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D4057 Practice for Manual Sampling of Petroleum andPetroleum Products2.2 Other Standards:UNS C11000 Electrolytic Tough Pitch Copper3AISI W1 1%Carbon Tool
5、Steel43.Summary of Test Method3.1 A beaker containing test oil and copper and steel rods isplaced in a gravity convection electric oven for 24 h at a testtemperature of 100C.At the completion of the test,the copperand steel rods are visually rated for discoloration and thebeaker is visually evaluate
6、d for deposits.4.Significance and Use4.1 Thermal stability characterizes physical and chemicalproperty changes which may adversely affect an oils lubricat-ing performance.This test method evaluates the thermalstability of a way lubricant in the presence of copper and steelrods at 100C.Deposits and r
7、od colors are the evaluationcriteria.No correlation of the test to field service has beenmade.4.2 This test method is intended for use in qualifying a waylubricant,rather than for quality control or condition monitor-ing purposes.5.Apparatus5.1 Gravity Convection Electric Oven,capable of maintain-in
8、g the samples at a test temperature of 100 6 2C.5.2 Calibrated Temperature Indicator,suitable for measur-ing and controlling the oven temperature.5.3 Griffn Beakers,borosilicate glass,100 mL.5.4 Copper Test Specimens,in accordance with UNSC11000,99.9%pure electrolytic tough pitch copper,6.4 mmin dia
9、meter by 7.6 cm in length(0.25 by 3.0 in.).5.5 Steel Test Specimens,in accordance with AISI W1 1%carbon steel,6.4 mm in diameter by 7.6 cm in length(0.25 by3.0 in.).5.6 Silicon Carbide Abrasive,320 grit with cloth backing.5.7 Crocus Cloth.5.8 Cincinnati Milacron Color Chart.55.9 Facial Tissue.6.Reag
10、ents6.1 Reagent Grade Acetone.(WarningFlammable,healthhazard.)6.2 Reagent Grade Heptane.(WarningFlammable,health hazard.)7.Preparation of Metal Rods7.1 Handle the rods at all times using forceps,facial tissue,or suitable gloves.7.2 Clean the iron and copper catalyst rods,whether new orpreviously use
11、d,prior to use.Clean the rods with the 320 gritsilicon carbide abrasive cloth while rotating the rods in a drill1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.L0.01 on Metal Removal Fluids and
12、Lubricants.Current edition approved April 15,2012.Published May 2012.Originallyapproved in 1997.Last previous edition approved in 2006 as D620306.DOI:10.1520/D6203-06R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual B
13、ook of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Copper Development Assoc.,2 Greenwich Office Park,Box1840,Greenwich,CT 06836.4Available from American Iron and Steel Institute(AISI),1140 ConnecticutAve.,NW,Suite 705,Washington,DC
14、 20036,http:/www.steel.org.5Available from Milacron Inc.,2090 Florence Ave.,Cincinnati,OH 45206.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 chuck at 1700 to 1800 rev/min.Clean the surface until it has abright copper or steel appearanc
15、e.Discard rods when diameteris less than 6 mm.7.3 Prepare surfaces finally with a crocus cloth.Remove allgrind marks.Finish the rods to a lightly polished surface finish.7.4 Wash the rods individually with acetone and air dry oncompletion of the polishing operation.8.Test Procedure8.1 Place a repres
16、entative 75 mL sample of test oil obtainedin accordance with Practice D4057 sampling procedure in aclean 100 mLGriffin beaker containing one each of the cleanedand polished iron and copper rods.8.2 Place the rods crossed in the beaker so that they are incontact at one point.The oil should completely cover the rods.8.3 Place the beaker and its contents on a tray in the oven.Keep the beakers as far from the walls as possible.8.4 Maintain the temperature at the center of the oven at 98to 102C for 2
