SMT nti ua tiav maj mam mus rau qhov siab ceev, zoo suab tsim kev loj hlob, qhov tsawg kawg nkaus qhov sib txawv ntawm cov khoom tsim, yuav tsum xav txog SMT cov chaw tsim khoom kev paub thiab cov txheej txheem zoo.Kev tsim ntawm qhov tsawg kawg nkaus ntawm cov khoom sib txuas, ntxiv rau kev ua kom muaj kev nyab xeeb ntawm SMT pads, yuav tsum xav txog kev tswj xyuas cov khoom.
Xyuas kom muaj kev nyab xeeb sib nrug thaum tso cov khoom sib xyaw
1. Qhov kev nyab xeeb ntawm kev nyab xeeb yog cuam tshuam nrog stencil flare, qhov qhib stencil loj dhau, stencil thickness loj dhau, qhov nro stencil tsis txaus stencil deformation, yuav muaj vuam bias, uas ua rau cov khoom txawm tias luv luv Circuit Court.
2. Nyob rau hauv kev ua hauj lwm xws li tes soldering, xaiv soldering, tooling, rework, soj ntsuam, kuaj, sib dhos thiab lwm yam kev khiav hauj lwm qhov chaw, qhov kev ncua deb kuj yuav tsum tau.
3. Qhov luaj li cas ntawm qhov sib txawv ntawm cov khoom siv nti yog cuam tshuam nrog kev tsim cov ntaub qhwv ntsej, yog tias lub ncoo tsis txuas ntxiv ntawm cov khoom siv, cov tshuaj nplaum yuav nkag mus rau ntawm qhov kawg ntawm cov khoom siv sab nraud, lub thinner cov khoom siv tau yooj yim dua. nws yog txuas txawm tias luv luv Circuit Court.
4. Tus nqi kev nyab xeeb ntawm qhov sib nrug ntawm cov khoom siv tsis yog tus nqi tiag tiag, vim tias cov khoom tsim khoom tsis zoo ib yam, muaj qhov sib txawv ntawm lub peev xwm los ua cov khoom sib dhos, qhov kev nyab xeeb tus nqi tuaj yeem txhais tau tias qhov hnyav, muaj peev xwm, kev nyab xeeb.
Cov teeb meem ntawm qhov tsis tsim nyog ntawm cov txheej txheem
Cheebtsam hauv PCB ntawm qhov raug teeb tsa kev teeb tsa, yog qhov tseem ceeb heev ntawm kev txo cov vuam tsis xws luag, cov txheej txheem kev teeb tsa, yuav tsum nyob deb li deb tau los ntawm qhov deflection ntawm thaj chaw loj thiab thaj chaw muaj kev ntxhov siab, kev faib khoom yuav tsum zoo li qub. ua tau, tshwj xeeb tshaj yog rau cov khoom uas muaj lub peev xwm loj thermal, yuav tsum sim zam kev siv cov PCB ntau dhau los tiv thaiv kev sib tsoo, kev tsim qauv tsis zoo yuav cuam tshuam ncaj qha rau PCBA assembleability thiab kev ntseeg tau.
1. Qhov deb ntawm qhov txuas yog ze dhau
Cov khoom sib txuas feem ntau yog cov khoom siv ntau dua, nyob rau hauv qhov kev teeb tsa ntawm lub sijhawm nyob ze dhau lawm, sib sau ua ke ntawm ib sab tom qab qhov sib nrug me dhau, tsis muaj qhov rov ua haujlwm dua.
2. Qhov deb ntawm cov khoom siv sib txawv
Hauv SMT, vim tias qhov sib txawv me me ntawm cov khoom siv cuam tshuam rau qhov tshwm sim, cov khoom sib txawv bridging ntau tshaj qhov tshwm sim hauv 0.5mm thiab hauv qab qhov sib txawv, vim nws qhov sib txawv me me, yog li cov qauv stencil tsim los yog luam tawm me ntsis omission yog yooj yim heev los tsim. bridging, thiab qhov sib nrug ntawm cov khoom me me dhau, muaj kev pheej hmoo ntawm luv luv Circuit Court.
3. Kev sib dhos ntawm ob qhov loj
Lub thickness ntawm ob lub Cheebtsam nyob ze lined ua ke, yuav ua rau lub tshuab muab tso rau hauv qhov chaw ntawm lub thib ob tivthaiv, kov rau pem hauv ntej tau muab tso rau lub Cheebtsam, nrhiav kom tau ntawm kev txaus ntshai los ntawm lub tshuab txiav fais fab tuag.
4. Cov khoom me me hauv qab cov khoom loj
Cov khoom loj hauv qab qhov kev tso kawm ntawm cov khoom me me, yuav ua rau muaj qhov tsis muaj peev xwm kho tau, piv txwv li, cov raj digital nyob rau hauv lub resistor, yuav ua rau muaj teeb meem rau kev kho, kev kho yuav tsum ua ntej tshem cov raj digital los kho, thiab tej zaum yuav ua rau cov raj digital puas. .
Cov teeb meem ntawm luv luv Circuit Court tshwm sim los ntawm kev sib ze dhau ntawm qhov deb ntawm cov khoom
> > Teeb meem piav
Ib yam khoom hauv SMT nti ntau lawm, pom tias lub capacitor C117 thiab C118 cov khoom nyob deb tsawg dua 0.25mm, SMT nti ntau lawm muaj txawm tias tin luv Circuit Court tshwm sim.
> > Teeb meem cuam tshuam
Nws ua rau luv luv Circuit Court hauv cov khoom thiab cuam tshuam cov khoom ua haujlwm;los txhim kho nws, peb yuav tsum tau hloov lub rooj tsavxwm thiab nce qhov kev ncua deb ntawm lub capacitor, uas tseem cuam tshuam rau lub voj voog kev loj hlob ntawm cov khoom.
> > Teeb meem Extension
Yog tias qhov sib txawv tsis tshwj xeeb ze, thiab qhov luv luv Circuit Court tsis pom tseeb, yuav muaj kev phom sij rau kev nyab xeeb, thiab cov khoom siv yuav raug siv los ntawm cov neeg siv nrog cov teeb meem luv luv, ua rau kev poob qis.
Lub sij hawm xa tuaj: Plaub Hlis-18-2023