Dab tsi yog txheej txheem Ultrasonic ntxuav tshuab muaj?

Xaiv tus neeg saib xyuas kom zoo muaj txiaj ntsig zoo rau kev ntxuav ultrasonic. Lub ntsiab mechanism ntawm ultrasonic tu yog cavitation. Ntxiv nrog rau cov khoom tseem ceeb ntawm cov khoom siv, cov roj nplai lossis cov khoom siv tsis zoo ntawm lub cev nws tus kheej, qhov viscosity thiab qhov nro ntawm cov dej ntxuav yuav tsum raug txiav txim siab hauv kev xaiv cov kua ntxuav ua si cavitation. Ultrasonic tu muaj qhov yuav tsum tau ua kom zoo rau kev tu kom zoo, thiab ntau cov kua dej sib txawv feem ntau siv rau hauv cov tso tsheb hlau luam sib txawv lossis tig. Lub luag haujlwm ntawm txhua cov kua dej ntxuav tsis zoo ib yam. Piv txwv li, trichloroethylene, sodium hydroxide aqueous tov, hluavtaws detergent, dej, cawv tau siv los ntxuav cov khoom siv kho qhov muag, acetone thiab 1 cov kua ntxhua sib xyaw, siv los ntxuav cov khoom siv semiconductor, nrog 2 tu cov kua thiab dej deionized, tom qab ntau yam tu, qhov chaw nto kom ua tiav cov nyhuv xav tau.

Txoj hauv kev uas feem ntau yog raus lub tank tu ultrasonic, nyob rau hauv lub tank tu ultrasonic uas muaj cov dej ntxuav, lub ultrasonic vibration generated los ntawm ultrasonic transducer radiates hauv qab ntawm lub tank tu mus rau cov kua ntxuav. Tshwj xeeb tshaj yog haum rau me me thiab nruab nrab - qhov loj me. Rau cov khoom uas muaj qhov loj thiab qhov hnyav, txoj kev tu hauv zos tuaj yeem siv tau, uas yog, cov khoom tau muab tso rau hauv cov tshuaj ntxuav kom huv, thiab cov khoom tsis huv yog immersed hauv cov tshuaj ntxuav kom txog thaum lawv ntxuav tag. Lwm txoj hauv kev yog tsim cov duab tshwj xeeb ultrasonic transducer raws li cov duab ntawm qhov loj me thiab cov kev xav tau ntawm kev tu hauv zos kom ua tiav kev tu hauv zos. Rau qhov chaw uas yuav tsum tau ua kom huv si nruj, kev tu ultrasonic yog nqa tawm nrog ntau yam sib txawv ntawm cov kua dej sib txawv hauv cov tso tsheb hlau luam sib txawv. Tsis tas li ntawd, lwm txoj kev tu yuav siv tau, xws li cua sov immersion, ultrasonic tu thiab hais txog. Rau cov khoom uas muaj cov roj tuab ntxiv, lawv feem ntau yog ntxuav los ntawm kub dipping lossis kub txau, thiab tom qab ntawd ntxuav los ntawm ultrasonic. Rau qee qhov chaw zoo ib yam nkaus, xws li lub qhov, qhov lub kaum sab xis tsis zoo ib yam, tuaj yeem siv rau ntau yam kev tu, uas yog, tu ntawm qhov sib txawv ultrasonic zaus.

The ultrasonic vibration frequency of cleaning liquid has great influence on ultrasonic cleaning effect, because it has great influence on cavitation. Usually used around 20kHz. Cavitation is easy to be produced at about 20kHz, and the cleaning effect is obvious. However, for products with high surface requirements and small aperture or gap, it is advisable to use short-wave and energy-concentrated high-frequency ultrasonic cleaning, sometimes with a frequency up to 800KHz. However, the high frequency ultrasonic vibration in the cleaning liquid attenuation is large, the action distance is short, the cavitation intensity is small, cleaning efficiency is low. In addition, some parts cannot be cleaned due to the "shadow" area caused by high frequency directivity. When the frequency tracking ultrasonic cleaning device is used, it is necessary to adjust the generator frequency so that the frequency of its output signal is consistent with the natural vibration frequency of the sensor. At this point, the cavitation effect is strongest. Large accumulation of white material can be seen in the cleaning fluid. The finger is like a needle.

Ultrasonic tu nrog lub zog ceev ceev yog ib txoj hauv kev zoo los txhim kho ultrasonic tu efficiency. Txawm li cas los xij, lub zog hluav taws xob siab yuav yauv qhov chaw ua haujlwm vim muaj ntau yam ua haujlwm, tshwj xeeb yog cov ua haujlwm lossis ntau yam ua haujlwm aluminium. Lub zog ntom ntom ntau dhau yuav tsis tsim cov nyhuv saturation. Rau cov khoom uas muaj cov roj hnyav hnyav, cov duab nyuaj thiab qhov sib sib zog nqus qhov qhov muag tsis pom qhov, lub tank tu yuav tsum sib sib zog nqus, cov kua viscosity ntxuav yog loj thiab lub zog ceev yog loj. High zaus ultrasonic tu lub zog ceev kuj loj heev. Lub zog ceev tuaj yeem txo los ntawm kev ntxuav lossis yaug nrog dej lossis cawv.

Vim tias qib ntawm cavitation ntawm cov kua ntxuav yog cuam tshuam nrog qhov kub thiab txias, qhov nce ntawm qhov kub yog qhov zoo rau cavitation, tab sis lub vapor siab kuj nce ntxiv. Qhov kub thiab txias dhau yuav txo cov hnab ntim cua. Yog li koj yuav tsum tswj hwm qhov kub thiab txias. Piv txwv li, aqueous solvent cleaning kua feem ntau yog hais txog 45 degree, trichlorethylene tu kua yog li 75 degree, dej yog li 60 degree. Rau volatile thiab flammable ntxuav kua, qhov kub thiab txias yuav tsum tsis txhob siab dhau.

Cov nyhuv thiab qhov zoo ntawm kev tu ultrasonic nyob ntawm lub sijhawm tu ultrasonic. Rau kev tu kom zoo, lub sijhawm luv luv. Txawm li cas los xij, qhov chaw ntawm qhov chaw ntawm qhov loj cavitation corrosion, uas cuam tshuam rau qhov zoo ntawm qhov chaw, ncua lub neej kev pab cuam, tsis tsuas yog txo cov efficiency ntawm ntau lawm. Cov pa phem yog qhov hnyav, cov duab ntawm cov khoom sib txawv, kev tu lub sijhawm ntev. Lub sijhawm ntxuav ntawm txhuas thiab txhuas alloy qhov chaw nrog cov txheej txheej sib txawv yuav tsum tsis txhob ntev dhau. Feem ntau hais lus, cov roj paug ntawm qhov chaw nrog qhov siab ntawm qhov smoothness tsawg dua, lub sij hawm tu yuav tsum tsis txhob ntev dhau. Lub sijhawm ntxuav tshwj xeeb raug txiav txim siab sim.

Txhawm rau txhim kho cov nyhuv tu thiab xyuas kom muaj kev siv ib txwm siv ntawm cov cuab yeej tu ultrasonic, txoj hauj lwm ntawm cov khoom hauv lub tank yuav tsum tau them sai sai rau. Thaum pib, nws yog ib qho tsim nyog kom tsis txhob ncaj qha squeezing qhov chaw ntawm lub ultrasonic vibration radiation nto, kom cov hluav taws xob nto tsis tuaj yeem tsim qhov kev xav tau kev co, ua rau cov cuab yeej tu tsis tuaj yeem ua haujlwm ib txwm. Qhov no tseem ceeb tshwj xeeb tshaj yog rau qhov hnyav dua. Cov khoom yog dai los ntawm cov cuab yeej tshwj xeeb hauv lub tank tu kom ze li qhov ua tau. Qhov thib ob, qhov chaw tu qhov tseem ceeb yuav tsum tau ua raws li qhov chaw ultrasonic yoj. Qhov thib peb yog xav txog qhov kev tso tawm ntawm cov av tom qab ntxuav. Plaub, ntxuav cov kua hauv lub tank tu convection. Thaum siv cov txheej txheem ntawm kev sib txuas txuas ntxiv ntawm kev ntxuav cov kua, cov kua inlet ceev yuav tsum tsis txhob ceev heev, txwv tsis pub cov cavitation yuav tsis muaj zog vim muaj roj ntau hauv cov kua ntxuav ntxiv.

Thaum ntxuav lub qhov muag tsis pom kev, cov kua dej ntxuav yuav tsum tau txhaj rau hauv qhov muag qhov muag ua ntej, thiab tom qab ntawd lub qhov muag tsis pom kev yuav tsum tau ua raws li cov khoom siv ultrasonic. Thaum ntxuav, ib txwm txhaj tshuaj ntxuav rau hauv lub qhov kom ua tiav cov txiaj ntsig tseem ceeb.

Ultrasonic tu lub tank yuav tsum tsis txhob muaj kev sib tsoo thiab cua txias thiab cua sov sai, thiaj li tsis ua kom puas qhov kev sib txuas nrog lub sensor. Thaum ultrasonic tu ntawm qee qhov chaw, kev kho degaussing yuav tsum tau nqa tawm, txwv tsis pub cov hlau seem tsis yooj yim tshem tawm.

Ultrasonic tu zoo tshuaj xyuas yog tsuas yog los xyuas cov av residue ntawm qhov chaw ntxuav.