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王晋生温坚(,030024):,:;;:TG115.28+5:BTheUltrasonicInspectionfortheButtWeldofSteelPipeWangJinsheng,WenJianAbstract:Thispaperhasintroducedtheultrasonicinspectioncharacteristicsandexistingproblemforthebuttweldofpowerplantheatingsurfacepipe,andindicatedthattheultrasonicinspectionmayreplacetheradiographicinspectionbyselectingtheproperprobeandtheworkingsensitivity.Keywords:heatingsurfacepipe;welding;ultrasonicinspection,32mm~60mm,3mm~6mm:,,,,,,,,1[1]1.1,,,,,,,1.210mm,:20090918,,,,,,,,1/4,,:sin/sin=CL/CS,;;CL;CSCS,CL,11()Table1Thevalueofand(unit:degree)1248.938.4635019.16551.139.96751.540.26852.140.66953.141.27153.341.471.553.941.873:1;2,,,,,,41!No.2HEAVYCASTINGANDFORGINGMarch2010,,:NS=ab/!S∀cos/cosl2=l1∀tg/tgNS1=NS-l2,NS;l1;l2;ab;NS15MHz,6mm∀6mm7mm∀7mm,4mm,6mm,l14.5mm,22l1Table2thelengthl1betweenthecrystalandtheincidencepoint///6mm∀6mm/mm6mm∀6mm/mm7mm∀7mm/mm7mm∀7mm/mm4.0mm/mm4.5mm/mm5.0mm/mm12N1N2N3N4Sb4Sb4.5Sb552.140.6698.126.9011.869.187.258.169.0753.141.2717.546.3311.048.396.687.538.3653.341.171.57.406.1810.818.206.567.388.2053.941.8736.885.7310.107.586.26.987.76,,,(7mm)5p6mm∀6mm,,,2[2]2.1:;;;;;2.2A,,,,,X,#∃2.32.3.1,,2.3.2,1/4,,73%,42%&44%,,,,33Table3Theselectionoftheprobeangle/mm4~66~88~13/70~7267~7063~672.3.3,;42No.2!March2010HEAVYCASTINGANDFORGING,9dB,2.3.4,,,:,2.3.5,,,2.3.6,,,,,,33.1,,3%~5%,,,3.2,3.3,,(),4,;,,[1],,..:,GB113451989,687-713.[2],,..:,1980.1200.7%223,1743.3,1496.1,200.7%,111631.7,167.8%,1223.1%1743.3,1496.1,1214.5%11366.4,151.7%,1261.6%,,,,,,(摘自中国二重纪检监察网2010-02-24)43!No.2HEAVYCASTINGANDFORGINGMarch2010