数字超声波探伤扫描技术在锅炉检测中的应用

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39220114Vol.39No.2Apr2011METALMATERIALSANDMETALLURGYENGINEERING:2011-02-12:(1973-),,,。ApplicationofDigitalUltrasonicNondestructiveInspectionScanningTechniqueintheDetectionoftheBoilerSONGLi-ming(WuxiYixingQualityandTechnicalSupervision,Yixing214206,China)ABSTRACT:Thedigitalultrasonicnondestructiveinspectionscanningtechnologycangettwo-dimensionalinformationofcross-sectionanddefectivethree-dimensionalstructureofobjectstobedetected,three-dimensionalreconstructionofcross-sectionhasimportantpracticalvalueandsignificanceinindustrialnondestructivescanning.Throughatypicalexampleofultrasonicnondestructiveinspection,describestheapplicationprinciplesofultrasonicnondestructivetestingintheboilerdetection,illuminatesthebasicstepsofultrasonicnondestructivetesting,sumsuptheadvantagesanddisadvantagesofthedetection.KEYWORDS:ultrasonicwave;detectionofdefects;nondestructivetesting;boiler:,。,,,。:;;;:TG115.28+5:A:1005-6084(2011)02-0040-04(,214206)、、。、,、、。,。,。,。,。1X,,。,()。。,,、、、FFT。,AD,,。,,、、、[1]。1.1AA,(CRT),(),,()、。,,。A1,1,,。1.2BB,()。B,(A),,,,(2)。1.3CCx、y,xB,y。C,,,,C(3)。1.4DDB,D,B。D,,1A23C4120112:,N,(,4)。1.5TOFD(TOFD),()“”“”。,,TOFD(5)。1.6,,。,,,。,τ,6,,θ[2]。τ,θ。θ=0,,-θ,,。τθ:τ=1C=dcsinθθ=sin-1(cdτ),C=5900m/s,;d。2JB/T4730-2005《》。:、、、。()、,、、。,、24h。、[3]。,(CSK-IA、CSK-A),,。:,,、、,4。2KT+50mm,(K,T);,、、、、,;,5TOFD4642Vol.39No.2;,;,。,、。、、、、;,,。33.1(1),。,,,;,[4]。(2)。,,,。(3)。1MHz(1),1000Hz()100。3.2X、、、、,;、、。。:[1],.[J].,2001,(9):54-55.[2].[J].,2002,26(3):1-5.[3].[J].,2008,(6):93-94.[4].[J].,2005,27(11):9-10,16.4320112,。1WC-CoTiC,。TiC,、,TiC,3~5,,,,。2(1)《》。,、。YG8,。(2)《》。,。(3)《》。,、,WC-Co,。3,Fe、Co、Ni、Cu、Zn,、,。,,,。,,:2004200680011。、,。,TiC、WC,。4TiC,WC,Co、Ni、Cu,。WC-Co、TM52、TM60、GT35,。::13077314710!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:

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