GB/T 26078-2010 金属材料 焊接残余应力 爆炸处理法

国家标准英文国际版

ICS77.040.10

H22

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NationalStandardofthePeolesReublicofChina

pp

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GBT260782010

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MetallicmaterialsWeldinresidual

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—

stressesMethodwithexlosion

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treatment

金属材料焊接残余应力

爆炸处理法

(EnlishTranslation)

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Issuedate2011-01-10Imlementationdate2011-10-01

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IssuedbGeneralAdministrationofQualitSuervisionInsectionand

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QuarantineofthePeolesReublicofChina

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StandardizationAdministrationofthePeole’

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国家标准英文国际版

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GBT260782010

Foreword

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SACTC183isinchareofthisEnlishtranslation.IncaseofandoubtaboutthecontentsofEnlish

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translationtheChineseoriinalshallbeconsideredauthoritative.

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ThisstandardwasroosedbChinaIronandSteelAssociation.

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ThisstandardwasrearedbSACTC183TechnicalCommitteeonSteelofStandardizationCom-

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mitteeofChina.

Ⅰ

国家标准英文国际版

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GBT260782010

Introduction

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Weldinresidualstressesexistwidelinallkindsofweldedstructuresthehihertensileresidual

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stressescouldhaveaharmfulinfluenceonlon-termsafetservicefortheweldedstructures.

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Thefundamentalcauseofroducinresidualstressesisthenon-comatiblestraincausedbthetem-

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eraturedifferencebetweenthebasemetalandtheweldmetal.Thereforeanstress-relieftech-

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niueistotransformthenon-comatiblestrainintothecomatiblestrainforexamlemakealastic

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stretchinattheweldzoneoralasticshorteninatthebasemetalzone.Theexlosiontreatmentis

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aticalstress-relieftechniuebmechanicalstretchindeformationmethod.

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Theshockwaveenerfromtheexlosiontreatmentcouldbeusedforstress-reliefofawelded

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structurebutalsoimrovemechanicalroertiesofthetreatedmaterialineneral.Theexlosion

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treatmentmethodissuitableforstress-reliefde,

mandsforallkindsofindustrstructureseseciall

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forlareormediumsteelstructuresandthestructureswithdissimilarweldedointsormanufactured

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withstainlesssteel.Throuhthesementedormultilebatchesexlosiontreatmentitisvercon-

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venientforwholeorlocalstress-relieftreatmentoflareormediumsteelstructureswithsuer-lon

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weldseam.

Ⅱ

国家标准英文国际版

/—

GBT260782010

—

MetallicmaterialsWeldinresidual

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—

stressesMethodwithexlosion

p

treatment

:

ImortantNoteThisstandarddoesnotindicateallossiblesafetissues.Theusershaveareson-

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sibilittotakearoriatesafetandhealthmeasuresandtoensurecomliancewiththerelevant

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nationalreulations.

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1Scoe

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Thisstandardsecifiestherinciledeterminationofrocessarameterseffectevaluationrelated

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reliefbexlosiontreatmentmethod.

constructionworkandsafetmattersforstress-yp

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Thisstandardisalicabletoweldedstructuresofmetallicmaterialsforstress-reliefwithathick-

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nessreaterthan5mmandieldstrenthlowerthan900MPawhichshallhaveanaccetableweld-

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inualitandabetterductiliterformanceAmorethan10%.

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2Normativereferences

Thefollowinreferenceddocumentsareindisensableforthealicationofthisdocument.Forda-

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tedreferencesonltheeditioncitedalies.Forundatedreferencesthelatesteditionoftherefer-

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enceddocumentincludinanamendmentsalies.

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GB6722,

Safetreulationsforblastin

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GB8031Industrialelectricblastinca

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GB9786Commondetonatincords

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GB19417Detonatorwithshock-conductintube

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GBT24179MetallicmaterialsResidualstressdeterminationTheindentationstrain-aemethod

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ASTME837Determininresidualstressbthehole-drillinstrain-aemethod

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3Termsanddefinitions

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Fortheurosesofthisdocumentthefollowintermsanddefinitionsal.

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1

国家标准英文国际版

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GBT260782010

3.1

residualelasticstrain

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theelasticstrainremainedintheweldedoint

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3.2

totallasticstrain

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ε

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thelasticstrainremainedinthemetallicstructureafterexlosiontreatment

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3.3

lasticstraininducedbshockwaves

py

C

Thelasticstrainroducedinthemetallicstructurebexlosiveshockwaves

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3.4

remainedstress

stressremainedinthemetallicstructureafterexlosiontreatment

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4Smbolsanddesinations

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ThesmbolsanddesinationsusedinthisstandardareshowninTable1.

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—

Table1Smbolsanddesinations

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SmbolsDesinationsUnit

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ε/

erresidualelasticstrainmmmm

ε/

totallasticstrainmmmm

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Clasticstraininducedbshockwavesmmmm

py

Vuantitofexlosiveerunitlenth/m

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Wwidthofweldseammm

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σieldstrenthofmetallicmaterialRorRMPa

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NOTE1MPa=1Nmm.

5Princile

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Therelievinweldinresidualstressesbexlosiontreatmentisachievedbalocallasticflowde-

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国家标准英文国际版

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GBT260782010

formationofthemetalneartheweldedointthrouhtheexlosionshockwaveener.

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Itdemonstratesthatthelasticstrainroducedbtheexlosiontreatmentrocessismadeuof

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