1、A Referencenumbe r ISO80071:1999 (E) INTERNATIONAL STANDARD ISO 80071 Firstedition 19990801 Carbonaceousmaterialsusedinthe productionofaluminiumSamplingplans andsamplingfromindividualunits Part1: Cathodeblocks ProduitscarbonsutilisspourlaproductiondelaluminiumPlans dchantillonnageetchantillonnagepou
2、runitsindividuelles Partie1:BlocscathodiquesISO80071:1999(E) ISO1999 Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproduced orutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingand microfilm,withoutpermissioninwritingfromthepublisher. InternationalOr
3、ganizationforStandardization Casepostale56 CH1211Genve20 Switzerland Internet isoiso.ch PrintedinSwitzerland ii Contents 1Scope 1 2Normativereferences . .1 3Definitions 1 4Apparatus .1 5Takingtestsamplesfromindividualcathodes. 1 5.1Procedure 1 5.2Cathodeblo cksproducedwithoutaco llectorbarslot .2 5.
4、3Cathodeblo cksproducedwithacoll ectorbarslot .2 5.4Dimensionsoftestsamples . .3 6Samplingreport .3ISO ISO80071:1999(E) iii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormally
5、carriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnongovernmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternatio
6、nalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternational
7、Standardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. InternationalStandardISO80071waspreparedbyTechnicalCommittee,ISO/TC47, Chemistry,Subcommittee SC7,Aluminiumoxide,cryolite,aluminiumfluoride,sodiumfluoride,carbonaceousproductsforthealuminium industry. ISO8007consistsofthefollowingpar
8、ts,underthegeneraltitle, Carbonaceousmaterialsusedintheproductionof aluminiumSamplingplansandsamplingfromindividualunits: Part1:Cathodeblocks Part2:Prebakedanodes Part3,whichisinpreparation,willgiveproceduresforsamplingsidewallblocks.ISO80071:1999(E) ISO iv Introduction Detailsofthesamplingofshapedr
9、efractoryproductsingeneralaregiveninISO5022,whichgivesthestatistical basisforsamplingplansforacceptancetestingofaconsignmentorlot. Cathodeblocksusedintheproductionofaluminiumhavespecificrequirementsforsamplingand,whilethe statisticalbasisforsamplinggiveninISO5022applies,furtherormodifiedrequirements
10、alsoapply.INTERNATIONALSTANDARD ISO ISO80071:1999(E) 1 Carbonaceousmaterialsusedintheproductionofaluminium Samplingplansandsamplingfromindividualunits Part1: Cathodeblocks 1Scope ThispartofISO8007specifiesproceduresforsamplingconsignmentsofcathodeblocksusedintheproductionof aluminiumandfortakingtest
11、samplesfromindividualblocks. 2Normative references Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthis partofISO8007.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublicationsdonot apply.However,partiestoagreementsbasedonthis
12、partofISO8007areencouragedtoinvestigatethepossibilityof applyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundatedreferences,thelatest editionofthenormativedocumentreferredtoapplies.MembersofISOandIECmaintainregistersofcurrentlyvalid InternationalStandards. ISO5022:1979, Shapedref
13、ractoryproductsSamplingandacceptancetesting. ISO6206:1979, ChemicalproductsforindustrialuseSamplingVocabulary. 3Definitions ForthepurposesofthispartofISO8007,thedefinitionsgiveninISO5022andISO6206apply. 4Apparatus Usesuitablecoredrillingequipmentwithcuttingedgespreferablycoatedwithdiamondoranotherex
14、tremelyhard material. 5 Takingtestsamplesfromindividualcathodes 5.1Procedure Cathodeblocksshallbesampled,bycoredr illingorsawing,inaccordancewiththeprovisionsofISO5022andwith theadditionalrequirementsgivenin5.2,5.3and5.4ofthispartofISO8007.Examplesofsamplelocationsaregivenin Figures1and2. Cathodeblo
15、cksproducedwithacollectorbarslotshallbeconsideredseparatelyfromthoseproducedwithoutaslot whendeterminingthelocationsfromwhichtestsample(s)willbetaken. Thelocationsfromwhichtestsampleswillbetakenshallbeagreedbetweenthesellerandbuyerinaccordancewith 5.2or5.3.ISO80071:1999(E) ISO 2 5.2 Cathodeblockspro
16、ducedwit houtacollectorbarslot Thepositionsfromwhichtestsamplescanbedrilledfromcathodeblocksproducedwithoutacollectorbarslotare restrictedbecause,aftersampling,thecathodeblockwillbeusedaspartofanelectrolysiscell.Testsamplesshall thereforebetakenfromthepartofthecathodeblockthatwillbemachinedoutasthes
17、lot.Samplingshallnotweaken thecathodeblockorincreasethelikelihoodofprematurefailure.Extremecareshallbeexercisedwhentakingvertically drilledsamples.ExamplesofpositionsfromwhichtestsamplescanbetakenareshowninFigure1. Figure1Examplesofsamplingpointlocationsforcathodeblockswithoutaslot 5.3 Cathodeblocks
18、produced withacollectorbarslot Consignmentsmaybedeliveredwithaproportionofthecathodeblocksmanufacturedtoalengththatisgreaterthan thatwhichwillultimatelyberequiredforuse.ThisisindicatedinFigure2asthe“extralength“.Thesellerandbuyer shallagreeontheproportionofextralengthcathodeblocksinaconsignment. NOT
19、E Itisstronglyrecommendedthatsuchanagreementtosupplyaproportionwithextralengthismade.Samplingfrom theextralengthpartofthecathodeblockispreferredbecausethepartofthecathodeblockthathasbeendrilledwillultima tely bemachinedawaywhentheblockiscuttofinallength. Whensamplingextralengthcathodeblocks,testsamp
20、lesshallbetakenhorizontallyandvertically,spreadingthe samplinglocationsevenlyovertheentirecrosssectionoftheblock. Whennoextralengthcathodeblocksareavailable,testsamplesshallbetakenhorizontallyandvertically,butthe optionsaremorerestricted. Samplingshallnotweaken,contaminateorcausethedestructionoftheb
21、lock.Extremecareshallbeexercisedwhen takingverticallydrilledsamples. Theavailabilityornonavailabilityofextralengthcathodeblo cksforsamplingpurposesshallbereportedunderiteme) ofthesamplingreport. ExamplesofpositionsfromwhichtestsamplescanbetakenareshowninFigure2.ISO ISO80071:1999(E) 3 Key 1 Extraleng
22、th Figure2Examplesofsamplingpointlocationsforcathodeblockswithaslot 5.4 Dimensionsoftestsamples Choosethedimensionsofeachtestsampleaccordingtothetesttobecarriedout.Thesmallestdimension(usuallythe diameter)shallbeatleastthreetimesthemaximumparticlesizeofthedryaggregate. RefertotheInternationalStandar
23、dsrelatingtotheteststobecarriedouttoensurethatthetestsamplestakenfrom thecathodeblockareofsuitabledimensions.Whereastandarddoesnotspecifythedimensionsofthetestpieces, adiameterof30mmor50mmisrecommended,aswellasalengthwhichisatleast1,5timesthediameter. Thecrosssectionofthetestsamplesshallbecircular.I
24、fparallelsidedtestpiecesaretobepreparedfromthetest samples,thediametershallbesufficienttoallowthis.Reportthedimensionsofthetestsamplesunderitemg)ofthe samplingreport. 6Sampling report Thesamplingreportshallincludethefollowing: a) thenamesoftheproducerandcustomer; b) thenumberandreferencemarkingofthe
25、batch(es); c) areferencetothispartofISO8007,i.e.ISO80071; d) thedateandplaceofsampling; e) completedetailsofthesamplingplanoperated; f) theproportionandnumberofextralengthcathodeblocks,ifavailableforsampling;ISO80071:1999(E) ISO 4 g) asketchshowingthelocationsofthesamplingpointsandthedirectionofsampling(horizontallyorvertically) (examplesaregiveninFigures1and2); h) thedimensionsofthetestsamples; i) details(nameandjobtitle)oftheperson(s)carryingoutthesampling.ISO80071:1999(E) ISO ICS71.100.10 Pricebasedon4pages
