1、Designation:G6504(Reapproved 2010)Standard Test Method forMeasuring Abrasion Using the Dry Sand/Rubber WheelApparatus1This standard is issued under the fixed designation G65;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of
2、 last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers laboratory procedures for de-termining the resistance of metallic materials to scratchingabrasion by
3、 means of the dry sand/rubber wheel test.It is theintent of this test method to produce data that will reproduciblyrank materials in their resistance to scratching abrasion undera specified set of conditions.1.2 Abrasion test results are reported as volume loss incubic millimetres for the particular
4、 test procedure specified.Materials of higher abrasion resistance will have a lowervolume loss.NOTE1In order to attain uniformity among laboratories,it is theintent of this test method to require that volume loss due to abrasion bereportedonlyinthemetricsystemascubicmillimetres.1mm3=6.102 105in3.1.3
5、 This test method covers five recommended procedureswhich are appropriate for specific degrees of wear resistance orthicknesses of the test material.1.3.1 Procedure AThis is a relatively severe test whichwill rank metallic materials on a wide volume loss scale fromlow to extreme abrasion resistance.
6、It is particularly useful inranking materials of medium to extreme abrasion resistance.1.3.2 Procedure BA short-term variation of Procedure A.It may be used for highly abrasive resistant materials but isparticularly useful in the ranking of medium-and low-abrasive-resistant materials.Procedure B sho
7、uld be used whenthe volumeloss values developed by ProcedureAexceeds 100mm3.1.3.3 Procedure CA short-term variation of Procedure Afor use on thin coatings.1.3.4 Procedure DThis is a lighter load variation ofProcedureAwhich is particularly useful in ranking materials oflow-abrasion resistance.It is a
8、lso used in ranking materials ofa specific generic type or materials which would be very closein the volume loss rates as developed by Procedure A.1.3.5 Procedure EA short-term variation of Procedure Bthat is useful in the ranking of materials with medium-orlow-abrasion resistance.1.4 This standard
9、does not purport to address the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D2240
10、 Test Method for Rubber PropertyDurometer Hard-nessE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessE177 Practice for Use of the Terms Precision and Bias in
11、ASTM Test MethodsG40 Terminology Relating to Wear and Erosion2.2 American Foundrymens Society Standards:AFS Foundry Sand Handbook,7th Edition33.Terminology3.1 Definitions:3.1.1 abrasive wearwear due to hard particles or hardprotuberances forced against and moving along a solid surface(Terminology G4
12、0).NOTE2This definition covers several different wear modes ormechanisms that fall under the abrasive wear category.These modes maydegrade a surface by scratching,cutting,deformation,or gouging(1 and2).41This test method is under the jurisdiction of ASTM Committee G02 on Wearand Erosion and is the d
13、irect responsibility of Subcommittee G02.30 on AbrasiveWear.Current edition approved Dec.1,2010.Published December 2010.Originallyapproved in 1980.Last previous edition approved in 2004 as G6504.DOI:10.1520/G0065-04R10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM
14、 Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American Foundrymens Society,Golf and Wolf Roads,DesPlaines,IL 60016.4The boldface numbers in parentheses refer to a list of refere
15、nces at the end ofthis standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Summary of Test Method4.1 The dry sand/rubber wheel abrasion test(Fig.1)in-volves the abrading of a standard test specimen with a grit ofcontrolled size and
16、 composition.The abrasive is introducedbetween the test specimen and a rotating wheel with achlorobutyl rubber tire or rim of a specified hardness.This testspecimen is pressed against the rotating wheel at a specifiedforce by means of a lever arm while a controlled flow of gritabrades the test surface.The rotation of the wheel is such thatits contact face moves in the direction of the sand flow.Notethat the pivot axis of the lever arm lies within a plane which isapproximately tangent to the rubb
