Daim ntawv thov ultrasonic webbing txiav thiab vuam txoj cai
Lub Ntsiab Cai ntawm Ultrasonic Txiav thiab Vuam
Ultrasonic txiav thiab vuam yog ib qho sub-field ntawm ultrasonic daim ntawv thov hauv kev lag luam, thiab nws tau siv dav dua vim nws tus phooj ywg ib puag ncig, ua haujlwm tau zoo, thiab zoo nkauj.
Txoj cai txiav thiab vuam ultrasonic
Kev txiav thiab vuam ntawm lub webbing ultrasonic siv lub zog siab ntawm 20-40kHz, hloov lub zog mus rau qhov chaw sib cuag ntawm lub webbing los ntawm lub taub hau vuam. 1. Kev Hloov Pauv Zog: Lub tshuab hluav taws xob ultrasonic hloov lub zog hluav taws xob mus rau hauv lub zog siab ntawm lub tshuab, uas tau nthuav dav los ntawm lub tshuab hloov pauv amplitude thiab tom qab ntawd xa mus rau lub taub hau vuam. 2. Kev Tsim Kub Sib Txhuam: Lub taub hau vuam nias rau ntawm lub webbing, ua rau muaj kev sib txhuam siab ntawm cov fibers hauv lub webbing, tam sim ntawd tsim cov kub siab hauv zos ntawm 500-1000 ℃. 3. Kev Vuam thiab Txiav Sib Xws: Qhov kub siab yaj cov fibers webbing (xws li nylon thiab polyester), thaum lub taub hau vuam siab ua rau qhov yaj, tsim cov txheej vuam muaj zog. Yog tias siv nrog lub taub hau vuam txiav tshwj xeeb, qhov kub siab tuaj yeem txiav lub webbing tib lub sijhawm, ua tiav kev sib xyaw ua ke "txiav + vuam". 4. Txias thiab Ua Duab: Tom qab kev co tsis ua haujlwm, lub siab raug tswj hwm rau 0.1-0.5 vib nas this, cia thaj chaw vuam txias thiab khov sai, ua tiav cov txheej txheem txiav thiab vuam. (Cov tshuab cua muab kev nplij siab, tseem ua kom txias thiab ua kom zoo nkauj thaum lub sijhawm txiav thiab vuam.)
Kev sib xyaw ua ke ntawm ultrasonic txiav thiab vuam system
Cov txheej txheem vuam yas ultrasonic feem ntau muaj peb lub ntsiab lus tseem ceeb: lub tshuab hluav taws xob ultrasonic (lub thawv hluav taws xob), ib lub ultrasonic transducer (vibrator), thiab ib lub ultrasonic pwm (lub taub hau pwm, lub taub hau vuam, lub suab raj).
Lub tshuab hluav taws xob ultrasonic (lub thawv hluav taws xob) Cov transducers ultrasonic (vibrators), cov pwm ultrasonic (cov taub hau pwm, cov taub hau vuam, cov tshuab raj)
1. Lub tshuab hluav taws xob ultrasonic (lub thawv hluav taws xob): Hloov cov hwj chim tseem ceeb mus rau hauv qhov tso zis siab thiab muaj zog ruaj khov.
2. Ultrasonic transducer (oscillator): Ib lub cuab yeej suab uas hloov lub zog, hloov lub zog hluav taws xob mus ua lub zog kho tshuab.
3. Lub tshuab ua kom nrov: Qhov amplitude ntawm lub transducer lub mechanical vibration yog hloov los ntawm ib qho pre-designed gain ratio.
4. Cov pwm (cov taub hau vuam, cov suab paj nruag): Kho kom haum rau qhov loj me tshwj xeeb raws li qhov xav tau ntawm kev vuam thiab txiav daim ntawv thov, thiab tsim nrog cov yam ntxwv acoustic kom tau raws li qhov xav tau resonance ntawm lub kaw lus ultrasonic. Hauv qab no, kuv yuav siv ntau cov qauv los piav qhia txog qhov xwm txheej tuning parameter hauv daim ntawv thov.
Zog = Amplitude * Siab * Lub Sijhawm * Tsis Tu Ncua K = Lub Hwj Chim * Lub Sijhawm
Cov qauv saum toj no qhia tau hais tias thaum vuam thiab txiav, qhov loj ntawm lub ultrasonic nthwv dej (uas tuaj yeem teeb tsa ntawm lub tshuab hluav taws xob), lub siab (cua siab lossis lub tog raj kheej hluav taws xob, nrog rau kev ruaj khov thiab tawv ntawm cov qauv), thiab lub sijhawm tso tawm nthwv dej muaj feem cuam tshuam zoo nrog cov nyhuv vuam thiab txiav. Hauv lwm lo lus, yog tias cov khoom tsis raug txiav zoo, cov kev ntsuas no tuaj yeem hloov kho tau zoo. Qhov no puas txhais tau tias cov kev ntsuas no siab dua, qhov zoo dua? Tsis yog li ntawd!
P = K∗A∗f∗δ, qhov twg P sawv cev rau lub zog vuam, hauv W;
K yog ib qho tsis hloov pauv uas nws qhov loj me cuam tshuam nrog lub suab conduction thiab lub zog dissipation ntawm cov khoom. Qhov no txhais tau tias peb feem ntau hais tias cov khoom sib txawv xav tau cov parameter fine-tuning sib txawv kom tau raws li qhov yuav tsum tau ua.
Ib sawv cev rau thaj tsam ntawm qhov txiav vuam, ntsuas hauv square meters (㎡). Qhov no yog qhov chaw sib cuag ntawm qhov txiav vuam, yog li qhov ntev thiab lub kaum sab xis ntawm ntug txiav feem ntau txiav txim siab thaj chaw no.
f yog lub zaus ultrasonic, lub ntsiab lus tias theoretically, cov zaus siab dua yooj yim dua rau weld. Txawm li cas los xij, acoustic, qhov siab dua qhov zaus, qhov nyuaj dua nws yog kom ua tiav qhov loj amplitude; lub unit yog Hz.
d sawv cev rau qhov amplitude, ntsuas hauv meters (m). Hauv kev xav, qhov amplitude loj dua ua rau vuam thiab txiav zoo dua. Txawm li cas los xij, lub neej qaug zog ntawm cov khoom siv hlau muaj feem cuam tshuam nrog zaus, cov khoom siv, kev ntxhov siab, lub sijhawm, siab, thiab qhov nyuaj, thiab yog li ntawd cuam tshuam los ntawm lwm yam kev ntsuas.
Rau yam tseem ceeb uas cuam tshuam rau kev txiav ultrasonic thiab vuam cov txiaj ntsig:
Siab + Lub Sijhawm + Cov Qauv Kho Tshuab + Cov Khoom Siv Khoom + Kev Kho Kom Zoo
1. Ultrasonic vuam siab
Siv lub zog kom haum rau qhov chaw vuam ua rau cov khoom siv vuam hloov pauv ntawm elastic mus rau yas, txhawb kev sib kis ntawm cov molecular, thiab tshem tawm cov cua seem ntawm qhov vuam, yog li ua rau kev ua haujlwm sealing ntawm qhov chaw vuam zoo dua. Feem ntau lub zog siab tsis tshaj 0.5 MPa.
2. Lub sijhawm vuam/txiav ultrasonic (lub sijhawm tso tawm nthwv dej)
Lub sijhawm yaj thiab lub sijhawm txias txaus yog qhov tseem ceeb. Yog tias muaj cua sov ruaj khov, lub sijhawm tsis txaus yuav ua rau vuam tsis tiav, thaum lub sijhawm ntau dhau yuav ua rau qhov vuam puas, slag overflow, thiab qee zaum kub (discoloration) hauv thaj chaw tsis tau vuam. Nws yog ib qho tseem ceeb kom ntseeg tau tias qhov chaw vuam nqus tau cua sov txaus kom mus txog lub xeev yaj tag nrho kom lav qhov txaus molecular diffusion thiab fusion. Tib lub sijhawm, lub sijhawm txias txaus yog qhov tsim nyog rau qhov vuam kom ua tiav lub zog txaus.
3. Ultrasonic amplitude
4. Cov qauv kho tshuab
Qhov kev ua kom raug thiab ruaj khov ntawm kev tsim cov thav duab cuam tshuam ncaj qha rau qhov vuam zoo, tshwj xeeb tshaj yog rau qee cov khoom ua kom raug, qhov twg cov qauv kho tshuab yuav tsum phim qhov tseeb ntawm cov khoom.
5. Cov Khoom Siv
Cov yam xws li cov khoom siv ntawm cov khoom welded, lawv cov qauv, tuab, thiab kev tiv thaiv siab kuj cuam tshuam ncaj qha rau qhov cuam tshuam vuam.
6. Kev kho cov khoom siv
Xaus lus, rau cov khoom kom ua tiav qhov zoo tshaj plaws ultrasonic txiav thiab vuam cov txiaj ntsig, cov khoom siv debugging kuj yog qhov lav tseem ceeb. Kev sib phim yooj ywm thiab kev hloov kho ntawm ntau yam kev teeb tsa thiab kev debugging ntawm qhov chaw los ntawm cov engineers ua lub luag haujlwm tseem ceeb.