煤矿提升容器用换向叉超声波探伤

,(,271000)ULTRASONICINSPECTIONOFTHEREVERSINGFORKSOFCOALMINEHOISTVESSELSJINDe2jun,ZHANGPeng(ShandongTaipanCoalMineMachineryFactory,Taipan271000,China):TG115.28+5:B:100026656(2001)1020447202(),,3,,,,1994,200,,,,11.130CrMnSi300mm300mm01230,12301180:20002052223,,,MT6841997,800,,,,,75040min1.2,,11,,,(A)(B)(C),h,1.5hAA,BABC,,A1.37442310200110NDTVol.23No.10Oct.2001©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.CTS226;215MHz,20mm;;;1.4,,,,2mm100mm,()180mm,130mm(),(dB)dB=20logX02S0X0S0X0=130180mm,130mm34dB,180mm37dB2mm-34dB2mm-37dB1.511ABC1233mm5mm42mm4mm6mm1.6,180mm,76100mm43,(2),2mm-37dB,,24dB,60%,(3),,,,,,,30%,,76100mm,232,46mm20mm+(400)YB271977(100)12,1YB25197734,2,135mm(4)3,2(451)844:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.215000,4000,30000,20%,3104857,49,,,3(1)K,,(2),,,,(3),,:[1].[M].:,1996.[2]JGPT3034.11996,[S].(448)42bPMPaP%12300.323270.531440.430CrMnSi108010,,,,4,,,,,YB251977,4,,,,,,2002,,1989,,16,,,64,7,28,(62121):20:300220::[phone]E2mail:[e-mail]154:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.