AMS-2431-6-Shot-peening-Media

SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2007SAEInternationalAllrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:[phone](insideUSAandCanada)Tel:[phone](outsideUSA)Fax:[phone]Email:[e-mail]::610-832-9585,(DAPS),Building4/D,700RobbinsAvenue,Philadelphia,PA19111-5094,Tel:[phone],:58:22PMAuthor:Gilligan-SID:13248-GUID:42460234-203.92.217.80SAEAMS2431/6C-2-3.2.2Glassshotshallnotcontainmorethan75ppmarsenicand100ppmleadbyweight.See8.2.3.3HardnessNotlessthan90%ofthereadingsshallbe500to550HVor515to575HK.Thesevaluesareequivalentto48to52HRCwhichisprovidedforreferenceonly.3.4Densityshallnotbelessthan2.3g/cc.3.5Magneticparticlesshallnotexceed0.1%byweightoftheoriginalsample.3.6InclusionsNotmorethan10%oftheglassshotshallcontaininclusions(includingairbubbles)coveringmorethan20%oftheirprojectedarea.3.7CoatingsSiliconeoranyothercoatingmaterialarenotpermitted.3.8Workmanship3.8.1ShapeGlassshotshallbesphericaltoellipsoidinshape.MinimumpercentageoftruespheresshallconfirmtoTable1.3.9SizeshallconformtotherequirementsofTable1.3.10TestMethodsandProcedures3.10.1SizeClassificationThesieveanalysisshallbedeterminedinaccordancewithASTMD1214.ThescreensshallbeinaccordancewithU.S.StandardSeriesdescribedinASTME11.3.10.2SilicacontentshallbedeterminedinaccordancewithASTMC169oramethodacceptabletothepurchaser.3.10.3HardnessshallbedeterminedbyaKnooppenetratorusing100gramload,orVickersDiamondPyramidpenetratorusing50gramload,oramethodacceptabletothepurchaser.3.10.4Contamination3.10.4.1Magneticparticlecontentshallbedeterminedbyslowlysprinklingapproximately1500gramsofthesampleglassshotonaninclinedaluminumtray,0.062inch(1.6mm)deepby6inches(152mm)wideby12inches(305mm)long.Thetrayshallbesupportedbyanonmagneticframesothatitisinclinedwitha6inch(152mm)risefromendtoend,(30degreesfromhorizontal).Four1x1x6inches(25x25x152mm)barmagnetsshallbepositionedagainsttheundersurfaceandcrosswiseoftheinclinedtrayaboutthemiddleofitslength.Thicknessoftrayatthemagnetlocationsshallnotexceed0.062inch(1.6mm).Magnetsshallbenotlessthan10,000Gausseachandarrangedsothatthemagneticnorthandsouthpolesalternate.Themagneticparticles(iron)thataccumulateonthetrayasthebeadsrolldownshallbebrushedintoapreweigheddish.Theprocedureshallberepeatedwiththesame1500gramsampleuntilallvisiblemagneticparticlesarecollected.Thedishshallbereweighedandthemagneticparticlecontentcalculatedasapercentageofthetotaloriginalsample.3.10.5Inclusionsshallbedeterminedmicroscopically,usingsubstagelighting,whileglassshotisimmersedinafluidhavingarefractiveindexof1.5.LicensedtoMoogInc.LicensedfromtheSAEDigitalLibraryCopyright2011SAEInternationalE-mailing,copyingandinternetpostingareprohibitedDownloadedThursday,January13,20119:58:22PMAuthor:Gilligan-SID:13248-GUID:42460234-203.92.217.80SAEAMS2431/6C-3-3.10.6SiliconeCoatingThefollowingtestshallbeperformedtodeterminethepresenceofsilicone.Slowlypourapproximately50gramsofthesampleglassshot