Ultrasonic thickness ntsuas tshuab
1.Xav tau lyamroj teebelectrode net txheej ntsuas
Lithium roj teeb electrode yog tsim los ntawm cov khoom siv, txheej rau saum npoo A thiab B. Thickness uniformity ntawm txheej yog cov tseem ceeb tswj tsis tau ntawm lithium roj teeb electrode, uas muaj kev cuam tshuam tseem ceeb ntawm kev nyab xeeb, kev ua tau zoo thiab tus nqi ntawm lithium roj teeb. Yog li ntawd, muaj cov kev xav tau siab rau cov cuab yeej siv thaum lub sij hawm tsim cov roj teeb lithium.
2.X-ray txoj kev kis tau tus mob ntsibhauvlub peev xwm txwv
Dacheng Precision yog tus thawj coj thoob ntiaj teb kev ntsuas electrode ntsuas kev daws teeb meem. Nrog ntau tshaj 10 xyoo kev tshawb fawb thiab kev txhim kho, nws muaj peev xwm ua tau zoo ntawm cov ntsuas hluav taws xob, CDM tuab ntawm cov cim kev sib xyaw thaj tsam, thiab qhov ntom ntom.
Tsis tas li ntawd, Dacheng Precision tseem tab tom ua cov kev hloov pauv hauv kev ntsuas tsis muaj kev puas tsuaj, thiab tau tshaj tawm Super X-Ray qhov ntsuas qhov ntom ntom raws li cov khoom siv hauv lub xeev semiconductor detectors thiab infrared thickness ntsuas raws li infrared spectral absorption txoj cai. Thickness ntawm cov ntaub ntawv organic tuaj yeem raug ntsuas kom raug, thiab qhov tseeb yog zoo dua li cov khoom siv txawv teb chaws.
Daim duab 1 Super X-Ray qhov ntsuas qhov ntom ntom
3. Ultrasonictmob plabmkev yooj yimttshuab
Dacheng Precision yeej ib txwm tau cog lus rau kev tshawb fawb thiab kev tsim cov thev naus laus zis tshiab. Ntxiv nrog rau cov saum toj no tsis-destructive kev daws teeb meem, nws tseem tab tom tsim ultrasonic thickness ntsuas tshuab. Piv nrog rau lwm cov kev tshuaj ntsuam xyuas, kev ntsuas ultrasonic thickness muaj cov yam ntxwv hauv qab no.
3.1 Ultrasonic thickness ntsuas txoj cai
Ultrasonic thickness gauge ntsuas lub thickness raws li lub hauv paus ntsiab lus ntawm ultrasonic pulse reflection txoj kev. Thaum lub ultrasonic pulse emitted los ntawm qhov kev sojntsuam dhau los ntawm cov khoom ntsuas kom ncav cuag cov khoom sib cuam tshuam, cov mem tes nthwv dej tau rov qab mus rau qhov kev sojntsuam. Lub thickness ntawm cov khoom ntsuas tuaj yeem txiav txim siab los ntawm kev ntsuas lub sijhawm ultrasonic propagation.
H = 1/2 * (V * t)
Yuav luag txhua yam khoom ua los ntawm cov hlau, yas, cov khoom sib xyaw, ceramics, iav, iav fiber ntau lossis roj hmab tuaj yeem ntsuas tau hauv txoj kev no, thiab nws tuaj yeem siv dav hauv roj av, tshuaj, metallurgy, nkoj tsim, aviation, aerospace thiab lwm yam kev lag luam.
3.2Aqhov zoontawm ultrasonic thickness ntsuas
Cov tshuaj ib txwm siv txoj kev sib kis kab hluav taws xob los ntsuas tag nrho cov txheej txheem thiab tom qab ntawd siv kev rho tawm los xam tus nqi ntawm lithium roj teeb electrode net txheej nyiaj. Thaum ultrasonic thickness gauge tuaj yeem ntsuas tus nqi ncaj qha vim qhov ntsuas sib txawv.
① Ultrasonic nthwv dej muaj zog penetrability vim nws luv luv wavelength, thiab nws muaj feem xyuam rau ntau yam khoom.
② Ultrasonic suab beam tuaj yeem ua kom pom tseeb hauv ib qho kev taw qhia tshwj xeeb, thiab nws taug kev hauv txoj kab ncaj nraim los ntawm qhov nruab nrab, nrog kev ncaj ncees zoo.
③ Tsis tas yuav txhawj txog qhov teeb meem kev nyab xeeb vim nws tsis muaj hluav taws xob.
Txawm li cas los xij, txawm tias qhov tseeb tias kev ntsuas ultrasonic thickness muaj qhov zoo li no, piv nrog ntau lub thickness ntsuas thev naus laus zis uas Dacheng Precision twb tau coj mus rau kev lag luam, daim ntawv thov ntawm ultrasonic thickness ntsuas muaj qee qhov kev txwv raws li hauv qab no.
3.3 Daim ntawv thov txwv ntawm ultrasonic thickness ntsuas
① Ultrasonic transducer: ultrasonic transducer, uas yog, ultrasonic sojntsuam hais los saum toj no, yog cov tseem ceeb ntawm ultrasonic kuaj ntsuas, uas muaj peev xwm kis tau thiab tau txais mem tes tsis. Nws cov cim tseem ceeb ntawm kev ua haujlwm zaus thiab lub sijhawm raug txiav txim siab qhov tseeb ntawm kev ntsuas thickness. Tam sim no high-end ultrasonic transducer tseem nyob ntawm kev xa khoom los ntawm txawv teb chaws, nws tus nqi yog kim.
②Material uniformity: raws li tau hais nyob rau hauv lub hauv paus ntsiab lus, ultrasonic yuav tsum reflected rov qab rau cov khoom interfaces. Qhov kev xav tau tshwm sim los ntawm kev hloov pauv tam sim hauv acoustic impedance, thiab qhov sib xws ntawm acoustic impedance yog txiav txim siab los ntawm cov khoom sib xws. Yog tias cov khoom siv los ntsuas tsis sib xws, lub ncha teeb liab yuav ua rau muaj suab nrov, cuam tshuam rau kev ntsuas ntsuas.
③ Roughness: qhov roughness saum npoo ntawm cov khoom ntsuas yuav ua rau tsis tshua muaj kev cuam tshuam echo, lossis txawm tias tsis tuaj yeem tau txais cov teeb liab ncha;
④ Kub: lub ntsiab lus ntawm ultrasonic yog tias cov neeg kho tshuab kev co ntawm cov khoom nruab nrab yog propagated nyob rau hauv daim ntawv ntawm nthwv dej, uas tsis tuaj yeem sib cais los ntawm kev sib cuam tshuam ntawm cov khoom nruab nrab. Lub macroscopic manifestation ntawm thermal motion ntawm nruab nrab hais lawv tus kheej yog kub, thiab thermal zog yuav ib txwm cuam tshuam rau kev sib cuam tshuam ntawm nruab nrab hais. Yog li qhov kub thiab txias muaj qhov cuam tshuam zoo rau kev ntsuas ntsuas.
Rau cov pa ultrasonic thickness ntsuas raws li pulse echo txoj cai, tib neeg txhais tes kub yuav cuam tshuam rau qhov ntsuas kub, yog li ua rau lub drift ntawm xoom point ntawm lub ntsuas.
⑤ Kev ruaj ntseg: lub suab nthwv dej yog cov neeg kho tshuab kev co ntawm cov khoom nruab nrab nyob rau hauv daim ntawv ntawm yoj propagation. Nws muaj kev cuam tshuam rau sab nraud, thiab cov teeb liab sau tsis ruaj khov.
⑥ Coupling nruab nrab: ultrasonic yuav attenuate nyob rau hauv cov huab cua, thaum nws yuav ua tau zoo propagated nyob rau hauv kua thiab khib nyiab. Txhawm rau kom tau txais cov teeb liab ncha zoo dua, cov kua txuas nruab nrab feem ntau yog ntxiv ntawm ultrasonic sojntsuam thiab ntsuas cov khoom, uas tsis tsim nyog rau kev txhim kho ntawm on-line automated soj ntsuam kev pab cuam.
Lwm yam, xws li ultrasonic theem reversal los yog distortion, lub curvature, taper los yog eccentricity ntawm qhov saum npoo ntawm cov khoom ntsuas yuav cuam tshuam qhov ntsuas tau.
Nws tuaj yeem pom tau tias kev ntsuas ultrasonic thickness muaj ntau yam zoo. Txawm li cas los xij, tam sim no nws tsis tuaj yeem muab piv nrog lwm txoj kev ntsuas thickness vim nws cov kev txwv.
3.4Ultrasonic thickness ntsuas kev tshawb fawb nce qibntawmDachengPkev txiav txim siab
Dacheng Precision yeej ib txwm tau cog lus rau kev tshawb fawb thiab kev tsim kho. Nyob rau hauv lub tshav pob ntawm ultrasonic thickness ntsuas, nws kuj tau ua ib co kev vam meej. Qee qhov kev tshawb fawb tau tshwm sim raws li hauv qab no.
3.4.1 Kev sim tej yam kev mob
Lub anode yog tsau rau ntawm lub worktable, thiab tus kheej-tsim high-frequency ultrasonic sojntsuam yog siv rau taag-point ntsuas.
Daim duab 2 Ultrasonic thickness ntsuas
3.4.2 Kev sim cov ntaub ntawv
Cov ntaub ntawv sim tau nthuav tawm hauv daim ntawv A-scan thiab B-scan. Hauv A-scan, X-axis, sawv cev rau lub sijhawm sib kis ntawm ultrasonic thiab Y-axis sawv cev rau qhov kev cuam tshuam yoj siv. B-scan qhia ib daim duab ob sab ntawm qhov profile thaum uas tig mus rau cov kev taw qhia ntawm lub suab tshaj tawm propagation thiab perpendicular mus rau qhov ntsuas nto ntawm cov khoom nyob rau hauv kev sim.
Los ntawm A-scan, nws tuaj yeem pom tias qhov amplitude ntawm rov qab mem tes nthwv dej ntawm kev sib tshuam ntawm graphite thiab tooj liab ntawv ci yog qhov siab dua li ntawm lwm cov waveforms. Lub thickness ntawm graphite txheej tuaj yeem tau los ntawm kev suav cov acoustic-txoj kev ntawm ultrasonic yoj hauv graphite nruab nrab.
Tag nrho ntawm 5 lub sij hawm ntawm cov ntaub ntawv raug kuaj ntawm ob txoj haujlwm, Point1 thiab Point2, thiab acoustic-path ntawm graphite ntawm Point1 yog 0.0340 peb, thiab acoustic-path ntawm graphite ntawm Point2 yog 0.0300 peb, nrog rau siab repeatability precision.
Daim duab 3 A-scan teeb liab
Daim duab 4 B-scan duab
Fig.1 X = 450, YZ dav hlau B-scan duab
Point1 X = 450 Y = 110
Acoustic txoj kev: 0.0340 us
Thickness: 0.0340 (peb) * 3950 (m / s) / 2 = 67.15 (μm)
Point2 X = 450 Y = 145
Acoustic txoj kev: 0.0300us
Thickness: 0.0300 (hli) * 3950 (m / s) / 2 = 59.25 (μm)
Daim duab 5 Ob-point test duab
4. Summaryntawm lyamroj teebelectrode net txheej ntsuas tshuab
Ultrasonic xeem tshuab, raws li ib tug ntawm cov tseem ceeb txhais tau tias ntawm non-destructive xeem technology, muab ib tug zoo thiab universal txoj kev rau kev ntsuam xyuas cov microstructure thiab txhua yam khoom ntawm cov khoom, thiab kuaj lawv micro- thiab macro-discontinuities. Tau ntsib nrog qhov kev thov rau online automated ntsuas ntawm net txheej ntawm lithium roj teeb electrode, txoj kev xa hluav taws xob tseem muaj qhov zoo dua tam sim no vim yog cov yam ntxwv ntawm ultrasonic nws tus kheej thiab cov teeb meem kev daws teeb meem.
Dacheng Precision, raws li tus kws tshaj lij hauv kev ntsuas hluav taws xob, yuav txuas ntxiv mus ua qhov kev tshawb fawb tob thiab kev tsim cov thev naus laus zis tshiab suav nrog kev ntsuas ultrasonic thickness, ua rau kev txhim kho thiab kev ua tiav ntawm kev sim tsis muaj kev puas tsuaj!
Post lub sij hawm: Sep-21-2023
