Nyob rau hauv cov txheej txheem kev tsim khoom ntawm nto mount technology (SMT), kev huv ntawm stencil ncaj qha cuam tshuam rau kev luam ntawv zoo, uas nyob rau hauv lem txiav txim siab qhov chaw tso kawm thiab soldering kev ntseeg ntawm cov khoom siv hluav taws xob. Raws li cov khoom siv tu tshwj xeeb, SMT stencil tu daim ntawv ua lub luag haujlwm tseem ceeb hauv kev ua kom lub ntsej muag stencil tsis muaj cov khoom seem ntawm cov tshuaj nplaum lossis cov kua nplaum liab.
Lub luag haujlwm tseem ceeb ntawm SMT stencil tu daim ntawv yog kom tshem tawm cov khoom seem zoo li cov nplaum nplaum thiab cov kua nplaum liab los ntawm cov stencil qhib thiab qhov chaw, tiv thaiv kev luam tawm los ntawm cov khoom seem, xws li cov khoom siv tsis txaus, solder bridging, thiab solder paste bridging. Yog tias cov khoom seem no tsis raug tshem tawm sai, lawv tsis tsuas yog cuam tshuam rau kev luam ntawv zoo tab sis kuj tuaj yeem ua rau cov khoom siv tsis zoo thiab txawm tias cov khoom tsis ua haujlwm. Yog li ntawd, kev tu stencil tsis tu ncua nrog siab - daim ntawv tu kom zoo yog qhov tseem ceeb hauv SMT ntau lawm.
Siab - zoo SMT stencil tu daim ntawv feem ntau muaj cov dej nqus dej thiab cov khoom adsorption, sai sai nqus cov roj thiab cov khoom siv flux los ntawm cov tshuaj txhuam hniav thaum tiv thaiv cov ntawv khib nyiab los ntawm kev poob thiab paug cov stencil. Tsis tas li ntawd, qee cov ntaub so stencil muaj cov qauv fiber ntau tshwj xeeb uas txo qhov hnav ntawm stencil thaum lub sijhawm so, txuas ntxiv nws txoj sia. Qee cov ntaub ntawv siab - kawg kuj tseem muaj cov khoom tiv thaiv zoo li qub, tiv thaiv hluav taws xob zoo li qub los ntawm kev nyiam cov plua plav thiab cov khoom, ntxiv kom ntseeg tau tias kev luam ntawv raug.
Stencil cov ntaub so yog siv ntau txoj hauv kev ntawm SMT cov kab ntau lawm, xws li los ntawm phau ntawv so mus rau kev tu kom zoo nrog wipers automated. Tsis hais txog ntawm txoj kev, xaiv txoj cai so tuaj yeem txhim kho kev ua tau zoo thiab txo qis rework thiab seem los ntawm kev luam ntawv tsis zoo.
Hauv cov ntsiab lus, thaum zoo li yooj yim, SMT stencil wipes ua lub luag haujlwm tseem ceeb hauv kev tsim hluav taws xob. Lawv tsis tsuas yog xyuas kom zoo luam ntawv tab sis kuj tsis ncaj qha txhim kho cov khoom lag luam kev ntseeg siab thiab kev ua haujlwm zoo, ua rau lawv cov khoom siv tseem ceeb uas tsis tuaj yeem tsis quav ntsej hauv SMT txheej txheem optimization.
