无损检测工艺规程液体渗透模板.docx
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无损检测工艺规程液体渗透模板
无损检测工艺规程
液体渗透模板
NJBSTCo.,Ltd.
QCD-015
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Title:
PROCEDUREFORLIQUIDPENETRANTEXAMINATION
PROCEDUREFORLIQUIDPENETRANTEXAMINATION
液体渗透检验工艺规程
CONTROLLED在控木口UNCONTROLLED非在控本口COPYNO副本编号:
PREPAREDBY编制:
DATE日期:
REVIEWEDBY审核:
DATE日期:
APPROVEDBY批准:
DATE日期:
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DEMONSTRATIONCERTIFICATION
ThisistocertifythatthisprocedurehasbeendemonstratedonatestspecimenwithknowndefectstothesatisfactionoftheAuthorizedInspectoraccordingtoASMECodeSectionV,T-150asrequiredbytheSectionVIDiv.l,Appendix&
TestSpecimenNo.:
Demo.ReportNo.:
NDELevelIII:
Al:
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PROCEDUREFORLIQUIDPENETRANTEXAMINATION
制i告厂
材料
悭号
匕海沪
渗诱剂
HD-
RS
船助剂
拜像剂
HD-
XS
厂沪
洗剂
HD-B^
1•概述
1・1本规程适用于ASME规范产品金属材料和焊件着色液体渗透检验。
1.2本规程仅适用于探测材料或焊件表而开口类缺陷。
1.3本规程在执行之前,须演示至AI满意。
2.人员
2」从事液体渗透检验的人员必须是根据南京左色钛业有限公司«NDE人员培训、考试、资格认证实施细则>>(资料号:
QCD-011)进行考试和资格任命的合格人员。
3.渗透材料
1・General
1.1ThisprocedureisappliedtodyeliquidpenetrantexaminationofmetalmaterialandweldmentforASMECodeitems.
1.2Thisprocedureisonlysuitablefordetectingthedefectsthatareopentothesurfaceofmaterialorweldment・
1.3ThisprocedureshallbedemonstratedtothesatisfactionofHieAlpriortoimplementation・
2.Personnel
2.1ThepersonnelengagedinthepenetrantexaminationshallbequalifiedandcertifiedinaccordancewiththerequirementofNJBSTCo.,Ltd・,s"WrittenPracticeforNDEPersonnelTrainingExamination,QualificationandCertification^(No.:
QCD-011).
3・PenetrantMaterials
3.1Thepenetrantmaterialsisintendedtoincludeallpenetrants,solventsorcleaningagents,developers,etc,usedintheexaminationprocess・
3.2Theliquidpenetrantexaminationmaterialsshallbedesignatedandrecommended,asshowninTable32ThemateriaIntermi
SurfacePreparation
bethesametype,differentfamiliesor
differentmanufactureijsisnotpermitted・
Table—
Manu
PrecleaningandDrying
--重童■・
Shanr
PenetrantApplication
HD-XS
(ShipBrand)Deveh)per
Cleaning
Drying
nlesssteelortitanium,all
3」渗透材料包括检验过程中使用的所有渗透剂.溶剂或淸洗剂、显像剂等。
3.2液体渗透探伤材料,必须是指定的和推荐的,见表3.2。
检验使用的材料必须是同一类型的。
不允许用不同类昆合使
表而制备
表3.2
预淸洗,干燥
施加渗透剂
淸洁
33岀檢胎奧忙休不铳俶诚紘材时必干燥
3.3Mmaterialsshallbeahalyzedindividuallyforchlorineandfluorint641(b)-fluorine-TheceobtainecE_
3.4W—analyzetheprocedureshownin1-041(a)ofSectionV.Thesulphurcontentshallnotexceedl%oftheresiduebyweight・Thecertificateofcompliancefrommanufacturershallbeobtained・
DevelopmentandInspectionieprocedureshowninT-
Thetotalchlorineplusl@.oftheresiduebyweight.
1manufacturershallbe
1(b)中i和氟的
GR川1仙•H今自-木乞2超过残
显像、检验
LFJT土,J,八;I“I甲Tt*八ZTJ八"I刃勺令卡
柑应的
VAX
ylmllnefpv
EvaluationandRecord
f1
PostCleaning
allmaterialsshallbententinaccordancewith
TTffrUto
CA、1二I•人“4
角程序,对加勺材科分I别分析疏含量“硫含量「须有制
评泄、记录
»/[二1丄i・JL-i
后淸洗
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4.检验程序
4.1检验程序流程图见图4.1
4.ExaminationProcedure
4.1ExaminationFlowChartasshowninFig.4.1.
Fig.4.1
4.2SurfacePreparation
Priortoallpenetrantexamination,thesurfacetobeexaminedandalladjacentareaswithinatleastlin・(25・4mm)shallbedryandfreeofdirt,grease,lint,scale,weldingflux,weldspatter,paint,oilandotherextraneousmatte匚Ifnecessary,surfaceshallbepreparedbygrindingormachining・
4.3Precleaning
431Theareastobeexaminedandadjacentareaswithinatleastlin.(25.4mm)shallbecleanedusingcleaningagentbeforethepenetrantisapplied・
4.3.2Aftercleaning,dryingofthesurfacetobeexaminedshallbeaccomplishedbynormalevaporationorwithforcedair,asappropriate.Theminimumdryingtimeshallensurethatthecleaningsolutionhasevaporatedpriortoapplicationofthepenetrant.
4.4PenetrantApplication
4.4.1Thepenetrantmaybeappliedonthesurface
图4」
4.2表面制备
所有渗透检验前,被检工件表而及其附近至少为1英寸(25.4mm)的区域内都应干燥淸洗干净,不得有任何脏物、纤维眉、氧化皮.焊剂、汕和其它外来物*必要时,应对表面进行打磨或机加工。
4.3预淸洗
4.3.1在施加渗透剂之前,被检区域及其附近至少为1英寸(25.4mm)的区域内均需用淸洁剂进行淸洗。
4.3.2淸洗后,经过适当的方法(自然挥发或人工通风),对被检表面进行F•燥;最少V燥的时间以保证在施加渗透剂之前淸洁剂已完全挥发为界。
4.4施加渗透剂
4.4.1能够用浸渍.涂刷或喷涂等任一合适的方法,在被检工件
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MaterialF
)rmDwellTimes(
PenetrantDeveloper
nin)
Aluminum,magn-Cesium.steel,brassorbronze,titaniumVandhightemperaturealloysplate
astings&welds5
ioughtmaterial-・extrusions,forgings,
7
107
meCAUiunicUiOupioccuuicuimelovvci01iii^iivr
材料3
滞留时间
!
式(mil
)
渗透
剂显象齐
J
铝、離钢、黄铜青铜、钛尚温合金
铸件和焊缝
轧材-挤压件
段件.板材
57
107
足时,则按照ASME规范第V卷T-653,对提议采用的温度范帀,使用有淬火裂纹的铝试块进行验证。
temperaturerangeshallbequalifiedusingaquenchcrackedaluminumblockaccordingtoASMECodeSectionV,T-653.
4.4.3Penetrationtimeiscritical.TheminimumdwelltimeisshowninTable4.4.3・Forsuitabletemperature,theareabeingexaminedshallremainwettedbythepenetrantforthedwelltime.
Table443Recommendedminimumdwelltimes
4.5ExcessPenetrantRemoval
4.4.3严格控制渗透时间,最小滞留时间见表443。
适当的温度条件下,在滞留时间内•被检区域必须用渗透剂保持潮湿。
表4.4.3推荐的最少滞留时间
4.5多余渗透剂的淸除
多余渗透剂必须用布或吸纸擦去,剩下的痕迹必须用蘸有溶剂的布或
Excesssolventremovablepenetrantshallberemovedbywipingwithaclothorabsorbentpaper.Theremainingtracesshallberemovedbylightlywipingthesurfacewithaclothorabsorbentpapermoistenedwithsolvent.Toavoidoverremoving,flushingthesurfacewithsolventshallbeprohibited・
4.6DeveloperApplication
4.6.1Thedevelopershallbeappliedassoonaspossibleafterexcesspenetrantremovalanddryingsurface・Thesurfacemaybedriedbynormalevaporationbeforethedeveloperisapplied・Thedryingtimeshallbewithin5to20min.
4.6.2Thedevelopershallbeappliedbyspraying.Auniformthincoatingshallbeprovidedandthecoatingthicknessshallbesuitable・
4.6.3Priortoapplyingwetdevelopertothesurface,thedevelopermustbethoroughlyagitated.
4.6.4Dippingorfloodingthepartwithnon-aqueousdeveloperisprohibited,sinceitwilldissolvethepenetrantinthediscontinuitiesthroughitssolventaction.
4.7Interpretation
4.7.1Developingtimeforfinalinterpretationbegins
纸在表而轻轻地擦去。
为了防止淸洗过分,禁止用溶剂淸洗表而。
4.6施加显像剂
4.6.1多余的渗透剂被淸除且工件干燥后,必须尽快地施加显像剂。
显像剂施加之前,工件表而能够自然挥发干燥,干燥时间必须在5-20分钟以内。
4.6.2施加显像剂必须采用喷涂法,薄且均匀,涂层厚度适中。
4.6.3在施加湿型显像剂至工件表而之前,显像剂必须充分搅拌。
4.6.4禁用非水湿显像剂浸渍或灌洗工件,因非水湿显像剂会经过溶解作用将缺陷中的渗透剂溶解掉。
4.7判断
4.7.1最终判断显像时间应从施加
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assoonasawetdevelopercoatingisdry.Theminimumdevelopingtimeshallbe7min・
4.7.2Finalinterpretationshallbemadewithin7to60minaftertherequirementsofPara.4.7.1aresatisfied.
4.7.3Thedevelopingtracecanbeexaminedeitherbynaturallightorartificiallight.Aminumumlightintensityof50fc(500Lx)isrequiredtoensureadequatesensitivityduringtheexaminationandevaluationofindications.
4.7.4Thesurfaceshallbedividedintoseveralpartstobeexaminedifthesurfaceissolargethattheexaminationcannotbefinishedwithinthegiventime.Thedevelopingconditioncanbeobservedeitherbyeyesorbymeansofamagnifier.
4.8Post-cleaning
Thepenetrantmaterialsshallbeclearlyremovedawayfrompartsafterexamination・Thepostcleaningmustbeperformedifremainingpenetrantmaterialscanresultincorrosionbythecombinationwithothermaterialsduringtheoperation.
Thesuitablecleaningprocessshallbeadoptedforpostcleaningsuchasflushingwithwater,mechanicalcleaning,solventsoaking,etc.
Thedevelopershallbecleanedassoonaspossibleafterexaminationifthepartrequeststhepostcleaningsoastoavoiditcondensedonthepart・
5.EvaluationofIndications
5.1Broadareasofpigmentationwhichcouldmaskindications
干显像剂后或从湿显像剂涂层干燥后立即起算,不得少于7分钟。
4.7.2在满足4.7.1要求后,最终判断必须在7・60分钟内作出。
4.7.3显像痕迹能够经过自然光或人工白光进行检验,要求最小灯光强度为5Ofc(5OOLX),以保证在检验和评价显示过程中有充分的灵敏度。
4.7.4如果受检表而太大,无法在规圧时间内完成检验,则应将表而分成几个部进行检验。
显像情况能够用肉眼或放大镜进行观察。
4&后j青洗
检验后,必须完全淸除工件上的渗透材料,如果残余渗透材料在操作过程中与其它材料混合后会导致腐蚀,则必须进行后淸洗。
能够采用如用水冲洗.机械淸洁、溶剂浸泡等适当的淸洁工作,来进行后淸洗。
如果需要后淸洗,则检验后必须尽快进行,以免显像剂凝固在工件上。
5.显示评价
5」大面积颜料沉淀会掩盖缺陷显示,是不合格的,这些区域应淸洗干净并重新检验。
5.2明显的机械性不连续为其显现特
ofdiscontinuitiesareunacceptableandsuchareasshallbecleanedandreexamined・
5.2Anindicationistheevidenceofamechanicalimperfection・Onlyindicationswithmajordimensionsgreaterthan1/16in(1.6mm)shallbeconsideredrelevant.
5.3Linearindicationsarethoseindicationsinwhichthelengthismorethanthreetimesthewidth・Roundedindicationsareindicationswhicharecircularorellipsoidalwiththelengthlessthanthreetimesthewidth.
5.4Anyquestionableordoubtfulindicationsshallbereexaminedtodeterminewhetherornottheyarerelevant.Surfaceconditioningmayproceedbeforethereexamination・
5.5Theindicationofadiscontinuitymaybelargerthanthediscontinuitythatcausesit;however,thesizeoftheindicationisthebasisofacceptanceorrejection.
6.AcceptanceStandards
Thefollowingrelevantindicationsareunacceptable:
a.anycracksorrelevantlinearindications;
b.relevantroundedindicationsgreaterthan3/16in.(4.8mm);
c.fourormorerelevantroundedindicationsinalineseparatedby1/16in・(1.6mm)orless(edgetoedge);
征,只有在显示主要尺寸大于1/16英寸(1.6mm)时,才是缺陷显示。
5.3线性缺陷是指长度大于三倍宽度的缺陷。
而形缺陷是指长度小于3倍宽度的圆形或椭圆形缺陷。
5.4任何有疑问或难以判断的显示,必须重新检验以确认是否是缺陷显示,重新检验前可先作表而修整。
5.5缺陷显示可能大于缺陷本身,可是以显示的尺寸作为合格与否的依据。
6.合格标准
下列缺陷显示为不合格:
a•任一裂纹或相应的线性缺陷;
b.大于3/16英寸