Rau ntau tus engineers electronics, tej zaum, lawv yog cov kws tshaj lij hauv kev tsim lawv cov PCB boards, thiab lawv kuj paub meej tias qhov chaw ua haujlwm zoo li cas lawv cov PCB yuav raug siv rau hauv, tab sis lawv tsis muaj lub tswv yim yuav ua li cas los tiv thaiv lawv cov Circuit Court boards thiab cov khoom thiab txuas ntxiv rau lawv. kev pabcuam lub neej.Qhov ntawd yog lub conformal txheej rau.
Conformal txheej yog dab tsi?
Cov txheej txheem txheej txheem yog txheej nyias nyias polymeric siv rau lub rooj tsav xwm luam tawm (PCB) txhawm rau tiv thaiv lub rooj tsavxwm thiab nws cov khoom los ntawm ib puag ncig thiab corrosion.Cov yeeb yaj kiab feem ntau yog siv rau ntawm 25- 250µm thiab 'ua raws' rau cov duab ntawm lub rooj tsavxwm thiab nws cov khoom siv, npog thiab tiv thaiv cov pob qij txha, cov khoom siv hluav taws xob, cov kab raug, thiab lwm qhov chaw metallised los ntawm corrosion, thaum kawg txuas lub neej ua haujlwm. ntawm PCB.
Vim li cas koj thiaj xav tau cov txheej txheem conformal?
Lub rooj tsav xwm luam tawm tshiab uas tau tsim tawm feem ntau yuav ua tau zoo, tab sis kev ua tau zoo tuaj yeem cuam tshuam sai vim yog lwm yam hauv nws qhov chaw ua haujlwm.Conformal coatings tuaj yeem siv rau hauv ntau qhov chaw los tiv thaiv cov ntawv luam tawm hauv Circuit Court los ntawm ya raws, tshuaj tsuag ntsev, tshuaj thiab kub kub kom tsis txhob muaj xws li corrosion, pwm loj hlob thiab hluav taws xob tsis ua hauj lwm.Kev tiv thaiv muab los ntawm cov txheej txheem conformal tso cai rau cov hluav taws xob ntau dua gradients thiab ze dua qhov sib nrug, ua rau cov neeg tsim qauv ua tau raws li qhov xav tau ntawm miniaturization thiab kev ntseeg tau.
1. Insulating cov khoom tso cai txo qis hauv PCB tus neeg xyuas pib qhov sib nrug ntawm ntau dua 80%
2. tuaj yeem pab tshem tawm qhov kev xav tau ntawm cov ntaub ntawv nyuaj, cov khoom siv zoo nkauj.
3. Lub teeb yuag.
4. Ua tiav kev tiv thaiv kev sib dhos tiv thaiv tshuaj lom neeg thiab corrosive nres.
5. Tshem tawm qhov kev ua haujlwm tsis zoo vim muaj kev puas tsuaj ib puag ncig.
6. Txo qhov kev ntxhov siab ib puag ncig ntawm PCB los ua ke.
Qhov zoo tshaj plaws, conformal coatings yuav tsum muaj cov yam ntxwv hauv qab no:
1. Daim ntawv thov yooj yim.
2. Kev tshem tawm yooj yim, kho thiab hloov pauv.
3. Kev hloov pauv siab.
4. Kev tiv thaiv thermal thiab mechanical shock.
5.Kev tiv thaiv ib puag ncig muaj kev phom sij xws li: ya raws, tshuaj lom neeg thiab lwm yam corrosive.
Koj siv Conformal Txheej li cas?
Plaub txoj hauv kev tseem ceeb ntawm kev siv cov txheej txheem conformal:
1. Dipping - txwv rau cov ntaub ntawv uas tsis kho sai sai los ntawm ya raws, oxidation los yog lub teeb.
2. Xaiv cov txheej txheem neeg hlau - xws li Asymtek, PVA lossis DIMA.Txhua hom txheej tuaj yeem siv tau yog tias xaiv lub taub hau kom raug.
3. Txau - txhais tes tsuag siv lub rooj tshuaj tsuag lossis lub kaus poom aerosol.Tag nrho cov txheej txheem tuaj yeem siv rau hauv txoj kev no.
4. Kev txhuam hniav - xav tau cov neeg ua haujlwm txawj ntse thiab txawj ntse kom tsim nyog rau kev tsim khoom.
Thaum kawg koj yuav tau txiav txim siab txog txoj kev kho uas txiav txim siab los ntawm cov txheej txheem xaiv, cua qhuav, qhov cub qhuav lossis UV teeb kho.Cov kua txheej yuav tsum tau ntub txhua qhov chaw thiab kho kom tsis txhob muaj qhov tsis xws luag.Epoxies tshwj xeeb tshaj yog rhiab rau qhov tsis xws luag.Epoxies kuj tuaj yeem ntsws thaum teeb tsa thiab yuav poob adhesion vim qhov sib ntxiv;ntau dhau shrinking thaum kho tuaj yeem ua rau muaj kev ntxhov siab loj heev rau cov khoom siv hluav taws xob.
Yog tias koj xav paub ntau ntxiv txog cov txheej txheem txheej txheem, PHILIFAST yuav muab cov lus qhia rau koj txog nws.PHILIFAST ua tib zoo mloog rau txhua yam lus qhia los muab koj cov PCB boards nrog lub neej ua haujlwm siab los ntawm kev tiv thaiv txhua qhov tseem ceeb txawm li cas los xij thiab hauv Circuit Court.
Post lub sij hawm: Jun-22-2021