Dab tsi yog Txoj Cai Ua Haujlwm ntawm "Ultrasonic Transducer"? Dab tsi yog Classifications?
Lub hauv paus ntsiab lus ntawm Ultrasonic Transducer:
Lub ultrasonic transducer yog cov tseem ceeb ntawm lub tshuab vuam ultrasonic, ib yam li lub cav ntawm lub tsheb. Lub ultrasonic transducer converts lub high-frequency hluav taws xob lub zog los yog sib nqus zog tso zis los ntawm lub ultrasonic generator mus rau hauv txhua yam kev co ntawm tib zaus. Ultrasonic transducer muab faib ua ob ntu. Ib qho yog magnetostrictive transducer thiab lwm qhov yog piezoelectric ceramic transducer.
Magnetostrictive transducers, vim lawv tsis tshua muaj kev ua tau zoo thiab tus nqi qis, kuj xav tau sab nraud DC polarized magnetic teb, yog li ultrasonic vuam tshuab tsis tshua muaj siv tam sim no. Niaj hnub no, ultrasonic vuam tshuab tag nrho siv piezoelectric ceramic transducers. Lub hauv paus ntsiab lus yog cov nyhuv piezoelectric ntawm cov khoom siv lead ua. Cov khoom no yog piezoelectric siv lead ua. Yuav muaj tsub nqi, thiab ib qho hluav taws xob teb yuav raug tsim nyob rau hauv lub siv lead ua. Ntawm qhov tsis sib xws, thaum cov siv lead ua raug rau sab nraud hluav taws xob, cov ntawv kub yuav deform. Qhov xwm txheej no yog hu ua piezoelectric effect. Tus qub yog hu ua qhov zoo hluav taws xob los yog cov nyhuv rov qab hluav taws xob.
Ultrasonic transducer cais:
Ultrasonic transducer yog lub plawv ntawm lub tshuab ultrasonic vuam. Qhov zoo ntawm ultrasonic transducer tsim yog ncaj qha ntsig txog kev ua haujlwm, kev ruaj ntseg thiab lub neej ntawm lub tshuab vuam. Feem ntau ntawm cov piezoelectric ceramic transducers siv nyob rau hauv kev ua lag luam yog raws li kev co. Muaj ntau ntau yam sib txawv, xws li radial vibration daim ntawv, longitudinal composite vibration daim ntawv, shear vibration daim ntawv, thickness vibration daim ntawv, thiab lwm yam. Thaum lub ultrasonic yas vuam tshuab welds yas workpieces, nws adopts longitudinal high-frequency kev co. Lub sab sauv thiab sab pwm ntawm lub workpiece yog melted nyob rau hauv high-frequency vibration thiab kev sib txhuam, thiab ces welded thiab tsim nyob rau hauv qhov kev txiav txim ntawm lub siab, thiaj li mus cuag lub vuam nyhuv.
Qauv:
Cov qauv ntawm piezoelectric ceramic transducer yog tsim los ntawm piezoelectric ceramic wafers, electrode nplooj ntawv, pem hauv ntej thiab nram qab npog, thiab lwm yam. Lub rear cover feem ntau yog ua los ntawm high-zoo hlau. Lub hau pem hauv ntej yog ua los ntawm lub teeb yuag, muaj zog aluminium alloy lossis titanium alloy. Nws yog ib tug longitudinal effector siv piezoelectric ceramics. Cov kev taw qhia polarization ntawm cov khoom siv ceramic Cov kev taw qhia ntawm cov hluav taws xob thiab cov kev taw qhia ntawm cov neeg kho tshuab kev co yog txawv.
Qhov zoo:
1. Feem ntau ntawm cov khoom siv ceramic muaj lub zog loj compressive. Thaum ib puag ncig lub zog hloov pauv, qhov ruaj khov ntawm cov transducer yuav hloov. Vim yog qhov tsis xws ntawm cov khoom siv ceramic, qhov tso cai tensile kev nyuaj siab me me, thiab tag nrho cov ultrasonic tsis cuam tshuam. Configure overload system kom tsis txhob muaj kev puas tsuaj ntawm transducer thaum overload tshwm sim.
2. Txij li thaum lub converging ib feem nyob rau hauv nruab nrab yog tsim los ntawm ib pab pawg neeg ntawm electrode shafts ntawm lub axially polarized rings ntawm ob hnub, qhov siab tshaj plaws coupling coefficient yuav siv tau.
3. Tus naj npawb ntawm cov nplhaib thiab txoj kev sib txuas yog xaiv tau, kom lub transducer tuaj yeem tsim nrog qhov dav impedance thiab ntau zaus.
4. Los ntawm kev hloov cov ntaub ntawv loj ntawm cov hlau npog daim hlau ntawm lub taub hau thiab tus Tsov tus tw, qhov kev ua haujlwm tsis zoo xws li bandwidth ntawm lub transducer, qhov kev vibration ceev piv rau pem hauv ntej thiab nram qab thiab qhov zoo electromechanical coupling coefficient tuaj yeem tswj tau.
