焊缝超声波探伤现状及提高缺陷检出率的措施

6(139)200612MECHANICALENGINEERING&AUTOMATIONNo15Dec1:167226413(2006)0620138202(,030024):,,:;;:TG44117:A:2006207217:(19672),,,,0,,,(),,,,,1111,,,,,,11124,,,,,1,1:ö(CVDA-1984):(1)2ca,a:a=a(Fö7)2(1):7;F(2)2c2a,a:a=a(8ö7)2(2):8,811011113F8,(1)(2),,CVDA,P1014H(H),a=H+P1CVDA,,1(mm)6.3512.725.450.87210.420.840.961.001.00011211211GB11345-89C,;JB4730-94(),,,,,,,,,,,,,,,11212,,,,:(1),,,(2)6dB(3),,(4),ASMEXI70o,2(1)(2)8F7,aa,,,,,(),()(),,,6dB,,,20dB,,dB,,3;,,,,,,,,(),,,,,,,GB11345-89,I,,4,,,,,CurrentStatusofUltrasonicExaminationofWeldingSeamandtheMeasurestoIncreaseReliabilityChenLi-xin(TaiyuanHeatPowerCo.,Taiyuan030024,China)Abstract:Inviewofthecurrentproblemswhichareeasilytobeneglectedonultrasonicexaminationofweldingseam,theharmthatmaybecausedisanalysedandthewaystoincreasethereliabilityoftheexaminationareputforward.Keywords:weldingseam;flaw;ultrasonicexamination93120066: