BS EN 1045-1997 硬焊.硬焊用熔剂.分类和交货技术条件

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||BRITISHSTANDARDBSEN1045:1997TheEuropeanStandardEN1045:1997hasthestatusofaBritishStandardICS25.160.50NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWBrazingÐFluxesforbrazingÐClassificationandtechnicaldeliveryconditions©BSI1997ISBN0580283534BSEN1045:1997AmendmentsissuedsincepublicationAmd.No.DateTextaffectedNationalforewordThisBritishStandardistheEnglishlanguageversionofEN1045:1997.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeWEE/19,Brazingandbrazewelding,whichhastheresponsibilityto:±aidenquirerstounderstandthetext;±presenttotheresponsibleEuropeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;±monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSIStandardsCatalogueunderthesectionentitled`InternationalStandardsCorrespondenceIndex',orbyusingthe`Find'facilityoftheBSIStandardsElectronicCatalogue.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to4,aninsidebackcoverandabackcover.©1997AllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN1045:1997EEUROPEANSTANDARDEN1045NORMEEUROPEÂENNEEUROPAÈISCHENORMJune1997ICS25.160.50Descriptors:Welding,brazing-andsoldering,brazing,solderingfluxes,classifications,designations,deliveryEnglishversionBrazingÐFluxesforbrazingÐClassificationandtechnicaldeliveryconditionsBrasagefortÐFluxpourlebrasagefortÐClassificationetconditionstechniquesdelivraisonHartloÈtenÐFluûmittelzumHartloÈtenÐEinteilungundtechnischeLieferbedingungenThisEuropeanStandardwasapprovedbyCENon1997-07-01.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.©BSI1997ForewordThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC121,Welding,thesecretariatofwhichisheldbyDS.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyDecember1997,andconflictingnationalstandardsshallbewithdrawnatthelatestbyDecember1997.AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.ContentsPageForeword21Scope32Classification32.1General32.2Fluxesforbrazingheavymetals(ClassFH)32.3Fluxesforbrazinglightmetals(ClassFL)33Designation34Technicaldeliveryconditions44.1Formsofdelivery44.2Packagingandmarking45Healthandsafetyprecautions4©BSI19971ScopeThisstandardspecifiestheclassificationoffluxesusedforbrazingmetalsandcharacterizesthesefluxesonthebasisoftheirpropertiesanduse,andgivestechnicaldeliveryconditionsandhealthandsafetyprecautions.2Classification2.1GeneralThisstandardcoverstwoclassesofflux,FHandFL.ClassFHisusedforthebrazingofheavymetals(steels,stainlesssteels,copperanditsalloys,nickelanditsalloys,preciousmetals,molybdenumandtungsten).ClassFLisusedforthebrazingofaluminiumanditsalloys.2.2Fluxesforbrazingheavymetals(ClassFH)2.2.1GeneralClassFHcoversseventypesofflux.ThecodeforeachtypeconsistsoftheclasslettersFHfollowedbytwodigits.2.2.2TypeFH10Fluxeswithaneffectivetemperaturerangefrom550ÊCuptoabout800ÊC.Theycontainboroncompounds,simpleandcomplexfluoridesandareusedatbrazingtemperaturesabove600ÊC.Thesearegeneralpurposefluxes.Theresiduesareusuallycorrosiveandhavetoberemovedbywashingorpickling.2.2.3TypeFH11Fluxeswithaneffectivetemperaturerangefrom500ÊCuptoabou