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电磁超声检测-无损探伤检测方法

发布日期:2016-11-09    浏览量:8218次

 电磁超声(ElectromagneticAcousticTransducer,以下简称EMAT),是无损检测领域出现的新技术,该技术利用电磁耦合方法激励和接收超声波。与传统的超声检测技术相比,它具有精度高、不需要耦合剂、非接触、适于高温检测以及容易激发各种超声波形等优点。在工业应用中,电磁超声正越来越受到人们的关注和重视。

       DIANCICHAOSHENGJIANCEZUOWEIYIZHONGXINXINGWUSUNJIANCEJISHU,YINGYONGLINGYUBUDUANKUOZHAN,XIANYIYINGYONGYUTIELUGANGGUIJIANCE、FUHECAILIAOJIANCEDENGLINGYU。MOUCHANGXINJIANYITIAODABANGCAIWUSUNJIANCESHENGCHANXIAN,ZHENGXIANDEGONGYILIUCHENGWEI:SHANGLIAO→JIAOZHI→PAOWAN→DAOLENG→NEIBUJIANCE→BIAOMIANJIANCE→FENJIAN→SHOUJIDAKUN→DIAOYUNXIAXIAN。BANGCAIDENEIBUJIANCECAIYONGDEJIUSHIDIANCICHAOSHENGJIANCEJISHU,

设备结构及功能简述

  EMATESTGBBG220XINGDIANCICHAOSHENGJIANCEYICAIYONGTANTOUXUANZHUAN、BANGCAIZHIXIANTONGGUOSHIDEJIANCEFANGFA,ZHUYAOYOUXUANZHUANTANTOUJIGOU、DIANQIJU、JISUANJIKONGZHIXITONG、CAOZUOTAI、QUEXIANBIAOJIQI、BIAOBANG、QUCIZHUANGZHIDENGBUFENZUCHENG。XUANZHUANTANTOUJIGOUBAOKUOTANTOUJIA、TANTOUXIANQUAN、YONGCITIE、HUAXUE、NAIMOPIANDENGZUJIAN。JISUANJIKONGZHIXITONGBAOKUOYINGJIANYURUANJIAN,RUANJIANDEZUOYONGZHUYAOSHIJINXINGJIANCECANSHUDESHEDING,JIANCEJIEGUODEDONGTAIXIANSHI、CUNCHU、DAYINDENG。ZAIRUANJIANZHONG,ASAOMIAOZHUYAOSHIWANCHENGBIAOBANGXIAOZHUNSHIDECANSHUSHEZHI,BAOKUOWEIZHIMEN(QIDIAN、KUANDU)、BAOJINGMENGAODU、ZENGYIZHI、MAICHONGZHONGFUPINLV、DUANBUJIANCEMANGQU、JIANCESUDUDENGCANSHU;CSAOTUYONGYUZHUZHIXIANSHIBANGCAIDEJIANCEJIEGUO,BAOKUOBANGCAIDEZHANGDU、QUEXIANDEWEIZHIDENG。

电磁超声检测的基本原理

  电磁超声检测将棒材内部划分为芯部区域和亚表面区域,利用横波探头CF检测芯部缺陷,利用横波探头SSF检测亚表面缺陷。横波探头CF采用回形线圈,当磁铁产生的磁力线垂直于棒材表面时,涡流受力方向平行于棒材表面,质点产生与作用力垂直的超声横波,以检测棒材芯部缺陷。横波探头SSF采用蛇形线圈,相邻两部分绕组的电流方向相反,磁力线垂直于金属表面时,棒材内部将产生横波,以检测棒材亚表面缺陷。棒材表面产生的电磁超声波向棒材内部传播,遇到缺陷时形成缺陷反射波,与棒材底面反射波一起被电磁超声探头捕捉,并在回波器上以A扫描波形图的形式显示出来,据此可分析缺陷在棒材内的位置和大小。

电磁超声检测

电磁超声检测

电磁超声的优点

一分快三 XIANGDUIYUCHANGGUICHAOSHENGBOJIANCE,DIANCICHAOSHENGJUYOUYIXIAYOUDIAN:

    1、FEIJIECHUJIANCE,BUXUYAOOUHEJI,KETOUGUOBAOFUCENGDENG。EMATDENENGLIANGZHUANHUAN,SHIZAIGONGJIANBIAOMIANDEQUFUCENGNEIZHIJIEJINXINGDE。YINERKEJIANGQUFUCENGKANCHENGSHIYADIANJINGPIAN,YOUYUQUFUCENGSHIGONGJIANDEBIAOMIANCENG,SUOYIEMATCHANSHENGDECHAOSHENGBOBUXUYAORENHEOUHEJIEZHI。

    2、CHANSHENGBOXINGXINGSHIDUOYANG,SHIHEZUOBIAOMIANQUEXIANJIANCE。EMATZAIJIANCEDEGUOCHENGZHONG,ZAIMANZUYIDINGDEJIFATIAOJIANSHI,HUICHANSHENGBIAOMIANBO、SHBOHELambBO。RUGUOGAIBIANJILIDIANXINHAOPINLVMANZUYIDINGGONGSHI,ZESHENGBONENGYIRENHEFUSHEJIAOθXIANGGONGJIANNEIBUQINGXIEFUSHE。JIZAIQITATIAOJIANBUBIANDEQIANTIXIA,ZHIYAOGAIBIANDIANXINHAOPINLV,JIUKEYIGAIBIANSHENGDEFUSHEJIAO,ZHEISHIEMATDEYOUYITEDIAN。YOUYUZHEIYITEDIANDECUNZAI,KEYIZAIBUBIANGENGHUANNENGQIDEQINGKUANGXIA,SHIXIANBOXINGMOSHIDEZIYOUXUANZE。

一分快三     3、 SHIHEGAOWENJIANCE。SUIZHEGUOJIAZAINENGYUAN、DONGLIQIYEDETOURUHEFAZHAN,GEZHONGGAOWENYALIGUANDAOZHUJIANZENGDUO。ZUOWEITEZHONGSHEBEIDEYALIGUANDAO,YIDANCHUXIANSHIGU,SUNSHIJIANGFEICHANGYANZHONG。DUICI,GUOJIAYOUXIANGGUANZHENGCEFAGUIQIANGZHIJIANCE,YISHIXIANZUIXIAODESHIGUFASHENGLV。ZHEIJIUSHIDEGAOWENYALIGUANDAOJIANCECHENGWEIYIGEJIXUJIEJUEDEWENTI。ERDIANCICHAOSHENGZHENGSHIJIEJUEZHEIGEWENTIDEZUIHAOXUANZE。DIANCICHAOSHENGXIANGDUIYUCHANGGUICHAOSHENGYIGEZUIDADEYOUDIANJIUSHIQIFEIJIECHUXING。RETIZAIKONGJIANFUSHEDEWENDUCHANGSHIANZHISHUSHUAIJIANDE,TANTOULIJIANCESHIJIANBIAOMIANMEITILIYIDUANJULI,QITANTOUHUANJINGWENDUJIUYOUXIANZHUDEXIAJIANG,SUOYI,DIANCICHAOSHENGKEYIYONGYUGAOWENGUANDAOJIANCE。

    4、DUIBEITANGONGJIANBIAOMIANZHILIANGYAOQIUBUGAO。EMATBUXUYAOYUSHENGBOZAIQIZHONGCHUANBODECAILIAOJIECHU,JIUKEXIANGQIFASHEHEJIESHOUFANHUIDECHAOSHENGBO。YINCIDUIBEITANGONGJIANBIAOMIANBUYAOQIUTESHUQINGLI,JIAOCUCAOBIAOMIANYEKEZHIJIETANSHANG。

一分快三     5、JIANCESUDUKUAI。CHUANTONGDEYADIANCHAOSHENGDEJIANCESUDU,YIBANDOUZAI10MI/FENZHONGZUOYOU,EREMATKEDADAO40MI/FENZHONG,SHENZHIGENGKUAI。

    6、SHENGBOCHUANBOJULIYUAN。EMATZAIGANGGUANHUOGANGBANGZHONGJIFADECHAOSHENGBO,KEYIRAOGONGJIANCHUANBOJIZHOU。ZAIJINXINGGANGGUANHUOGANGBANGDEZONGXIANGQUEXIANJIANCESHI,TANTOUYUGONGJIANDOUBUYONGXUANZHUAN,SHITANSHANGSHEBEIDEJIXIEJIEGOUXIANGDUIJIANDAN。

    7、SUOYONGTONGDAOYUTANTOUSHULIANGSHAO。ZAISHIXIANTONGYANGGONGNENGDEQIANTIXIA,EMATTANSHANGSHEBEISUOYONGDETONGDAOSHUHETANTOUSHUDOUSHAOYUYADIANCHAOSHENG。TEBIEZAIBANCAIEMATTANSHANGSHEBEISHANGJIUGENGWEIMINGXIAN,YADIANCHAOSHENGYAOJINXINGBANMIANDETANSHANGXUYAOJISHIGETONGDAOJITANTOU,EREMATZEZHIXUYAOSIGETONGDAOJIXIANGYINGSHULIANGDETANTOUJIUKEYILE。

    8、FAXIANZIRANQUEXIANDENENGLIQIANGEMATDUIYUGANGGUANBIAOMIANCUNZAIDEZHEDIE、ZHONGPI、KONGDONGDENGBUYIJIANCHUDEQUEXIANDOUNENGZHUNQUEFAXIAN。

电磁超声的缺点

一分快三     1、TADEHUANNENGXIAOLVYAOBICHUANTONGYADIANHUANNENGQIDI20-40dB。DANGRAN,ZHEIGEQUEDIANKEYIYONGJINGXINSHEJIYUZHIZAODIANZIFASHEJIYUJIESHOUJI、HUANNENGQILAIMIBU。

    2、GAOPINXIANQUANYUGONGJIANJIANXIBUNENGTAIDA。XIANQUANCONGGONGJIANBIAOMIANMEITIGAOYIGERAOXIANBOZHANGDEJULI,SHENGXINHAOFUDUJIUYAOXIAJIANG107dBHE96dB。

       容大检测是一家从事无损探伤检测机构,拥有超声探伤UT渗透探伤PT磁粉探伤MT射线探伤RT等多种无损探伤检测设备,适用地铁、高铁、工程结构、建筑工程、压力容器、法兰阀门等多种通用机械设备和工程建设项目。

标签: 超声波检测 无损探伤 磁粉探伤

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