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1、材料取样大全（Materialssampling）MaterialsamplingDaquan.Txt,knowhowtoletgoofpeoplefindeasy,knowhowtoforgetpeoplefindfreedom,knowhowtocareforpeoplefindhappiness!Thewisdomofawomanistoadmiretheintelligenceofaman.Lifeisalamp,workisanoil,andifitneedslight,goforit!Love,flytothehorizon,feelsteadfast,becauseofyour
2、concern;afterbreakingup,sittingathomefeelweightless,becausethereisnodirection.MainrawmaterialsinspectionstandardsandsamplingmethodsSamplingtestofreinforcingbar(I)reinforcingbar1.,inspectionstandards:steelrawmaterialtestshouldbethesamefactory,thesamefurnacenumber,thesamespecifications,thesamedeliver
3、ystate,thesameapproachtime,each60tforabatchofacceptance,lessthan60t,alsoaccordingtoabatchofacceptancecalculation.2.samplingquantity:asetofsamples(2tension,2coldbending,1Chemical)ineachbatch.Forlowcarbonsteelhotrolleddiscs,thetensionis1.3.samplingmethods:1testpiecesfrominterception:everytwobarsreinf
4、orcedinterceptionofatension,acoldone,thenachemicalinterceptionspecimen,hot-rolledcarbonstripcoldbendingspecimensshouldbetakenfromdifferentdisc.(25/45,30/50)Thespecimensineachbarfromtheendisnotlessthan500mminterception.Thetensilespecimenlength:7d0+200mm.Thecoldbendingspecimenlength:5d0+150mm.Thechem
5、icalspecimensamplingmethod:1)analysischipscanbeplanedordrilled.Beforetakingthechip,thesurfaceoxidescaleshallberemoved.2)the1/2symmetricalplaneisdrawnfromthewholecrosssectionoftherolledmaterialornotlessthanthecrosssection.3)perpendiculartothelongitudinalaxisofdrillsteelscraps,thedepthshouldbesteelax
6、is.4)asteelchipforverificationandanalysismusthaveenoughweight.(two)colddrawnsteelbarsshallbecomposedofagradeofnotmorethan20tandacolddrawnsteelbarofthesamediameter.Abatchof3steelbarsshallbetakenfromeachbatch,andeachofthe3specimensshallbesubjectedtotensilecoldbendingtest.(three)colddrawnlowcarbonstee
7、lwireThemechanicalpropertiesofsteelwireshallbe1.gradeazhupantest,fromeachendofanofficeplatesteelwirenotlessthan500mmandthentaketwosamplesrespectively,tensionandbendingexperiment,andtodeterminethediskgroupac
