ASTM_D_3342_-_90_2012.pdf

Designation:D334290(Reapproved 2012)Standard Test Method forDispersion Stability of New(Unused)Rolling OilDispersions in Water1This standard is issued under the fixed designation D3342;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,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.1.Scope1.1 This test method covers determination of the dispersionstability of dispersions of rolling oils in water.It is applicableto oils whose water dispersions are stable under moderateagitation,but which show at least some separation uponstanding quiescent for12h,by rising of the oil particles.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 theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specificwarning statements,see 6.2,A2.1,and A2.5.2.Referenced Documents2.1 ASTM Standards:2D1126 Test Method for Hardness in WaterD1293 Test Methods for pH of Water3.Summary of Test Method3.1 The rolling oil is dispersed in a standard test water,in astandard container,under standard conditions of time,agitation,and concentration.When the agitation is stopped,theresulting decrease in oil concentration at a specified point nearthe bottom of the container is measured at certain time intervalsand plotted.4.Significance and Use4.1 Each steel rolling mill and operation is particular as tothe degree of stability of dispersion required to effect maxi-mum efficiency of lubrication and cooling.This test method isdesigned to differentiate between coolants for this use.Asimilar situation is encountered with aluminum rolling mills,but significant differences in designated settling times berequired outside the parameter of times used herein.Precisiondata have only been obtained relative to metastable dispersionsfor steel mill rolling oils.5.Apparatus5.1 Mixing Beaker,3,45800 mL capacity,made of stainlesssteel,modified as shown in Annex A2.5.2 Combination Agitator and Temperature ControlDevice.4,55.3 Babcock Centrifuge Bottles4,6The 165-mm cream testbottle,with 5 mL-neck permitting oil concentration readingsfrom 0 to 10%is preferred.These bottles should be marked forfilling to the 50-mL level which will normally be found closeto the junction of body and neck.Sulfonation bottles may alsobe used.5.4 Centrifuge,capable of whirling the Babcock bottles atsufficient speed to give a clean separation of oil and waterunder the test conditions.A centrifuge giving a relativecentrifugal force(rcf)of 5009 at the bottle tips has been foundto give good separations in 10 min.5.5 To calculate the rpm required to achieve the stated rcf,use the following formula:rpm5 1335=rcf/d(1)where:rcf=relative centrifugal force,1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.L0.04 on Metal Deformation Fluids and Lubricants.Current edition approved April 15,2012.Published April 2012.Originallyapproved in 1990.Last previous edition approved in 2006 as D334290(2006).DOI:10.1520/D3342-90R12.2For referenced ASTM standards,visit the ASTM website,www.astm.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.3The sole source of supply of the apparatus(beaker#2-584F)known to thecommittee at this time is Fisher Scientific.4If you are aware of alternative suppliers,please provide this information toASTM International Headquarters.Your comments will receive careful consider-ation at a meeting of the responsible technical committee,1which you may attend.5The sole source of supply of the apparatus(the Porta-temp)known to thecommittee at this time is Precision Scientific Co.6The sole source of supply of the apparatus(cream test bottle No.12-705 orsulfonation bottle No.6-904)known to the committee at this time is FisherScientific.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 d=diameter of swing measured between tips of oppositetubes when in rotating position,mm,andrpm=revolutions per minute.5.6 Stop Watch,or similar timing device.6.Reagents6.1 Buffered Synthetic Hard Water,prepared in accordancewith Annex A2.6.2 Sulfuric Acid,30 vol%in water.Lower acid concen-trations may be used if clean separations are obtained.(WarningSulfuric acid is poison,corrosive,and a strongoxidizer.)7.Procedure7.1 The flow rate of the combination agitator and tempera-ture control device should be between 3500 and 4500 mL/min.The flo