[VW PCBworld] Cov neeg tsim qauv tuaj yeem tsim cov lej sib txawv ntawm cov ntawv luam tawm Circuit Board (PCBs).Yog tias txoj hlua tsis xav tau ib txheej ntxiv, vim li cas siv nws?Puas yuav tsis txo cov khaubncaws sab nraud povtseg ua rau lub rooj tsavxwm nyias nyias?Yog tias muaj ib lub rooj tsavxwm tsawg dua, tus nqi yuav qis dua?Txawm li cas los xij, qee zaum, ntxiv ib txheej yuav txo tus nqi.

Cov qauv ntawm Circuit Board

Circuit boards muaj ob lub qauv sib txawv: cov qauv tseem ceeb thiab cov ntawv ci.

Nyob rau hauv cov txheej txheem tseem ceeb, tag nrho cov txheej txheem conductive nyob rau hauv lub rooj tsav xwm Circuit Court yog coated ntawm cov khoom tseem ceeb;Nyob rau hauv cov ntawv ci-clad qauv, tsuas yog lub puab txheej txheej ntawm lub rooj tsav xwm Circuit Court yog coated ntawm cov khoom tseem ceeb, thiab txheej txheej txheej txheej yog cov ntawv ci-clad dielectric board.Tag nrho cov txheej txheem conductive yog sib koom ua ke los ntawm dielectric siv txheej txheem lamination multilayer.

Cov khoom siv nuclear yog ob-sided ntawv ci-clad board hauv lub hoobkas.Vim tias txhua tus tub ntxhais muaj ob sab, thaum siv tag nrho, tus naj npawb ntawm cov txheej txheem ntawm PCB yog tus lej sib npaug.Vim li cas ho tsis siv cov ntawv ci ntawm ib sab thiab cov qauv tseem ceeb rau tus so?Cov laj thawj tseem ceeb yog: tus nqi ntawm PCB thiab kev khoov ntawm PCB.

Tus nqi kom zoo dua ntawm cov lej sib npaug

Vim tias tsis muaj txheej txheej ntawm dielectric thiab ntawv ci, tus nqi ntawm cov ntaub ntawv raw rau khib-numbered PCBs yog me ntsis qis dua li ntawm tus lej PCBs.Txawm li cas los xij, tus nqi ua haujlwm ntawm khib-txheej PCBs yog siab dua li ntawm cov txheej txheem PCBs.Tus nqi ntawm cov txheej txheem sab hauv yog tib yam;tab sis cov ntawv ci / core qauv pom tseeb nce tus nqi ua haujlwm ntawm txheej txheej.

Odd-numbered-txheej PCBs yuav tsum tau ntxiv cov txheej txheem uas tsis yog-tus qauv laminated core txheej bonding txheej txheem raws li cov txheej txheem tseem ceeb.Piv nrog rau cov qauv nuclear, kev tsim khoom ntawm cov chaw tsim khoom uas ntxiv cov ntawv ci rau cov qauv nuclear yuav txo qis.Ua ntej lamination thiab kev sib txuas, cov tub ntxhais sab nrauv yuav tsum tau ua ntxiv, uas ua rau muaj kev pheej hmoo ntawm khawb thiab etch tsis raug ntawm txheej txheej.

Cov qauv sib npaug kom tsis txhob khoov

Qhov laj thawj zoo tshaj plaws kom tsis txhob tsim ib lub PCB nrog cov khib nyiab ntawm cov khaubncaws sab nraud povtseg yog qhov khib tus lej ntawm cov txheej txheem Circuit Court board yooj yim khoov.Thaum lub PCB txias tom qab txheej txheem sib txuas ntawm ntau txheej, qhov sib txawv lamination tensions ntawm cov tub ntxhais cov qauv thiab cov ntawv ci-clad qauv yuav ua rau PCB khoov.Raws li lub thickness ntawm lub rooj tsavxwm Circuit Court nce, qhov kev pheej hmoo ntawm dabtsi yog khoov ntawm ib tug composite PCB nrog ob tug sib txawv qauv nce.Tus yuam sij rau kev tshem tawm Circuit Board bending yog txais yuav ib pawg sib npaug.

Txawm hais tias PCB nrog qee qhov kev khoov ua tau raws li cov kev cai tshwj xeeb, kev ua haujlwm tom qab yuav raug txo, uas ua rau muaj kev nce nqi.Vim tias cov cuab yeej tshwj xeeb thiab cov khoom siv tes ua haujlwm yuav tsum tau ua thaum lub sijhawm sib dhos, qhov tseeb ntawm cov khoom siv tau raug txo qis, uas yuav ua rau qhov zoo.

Siv tus lej sib npaug PCB

Thaum tus lej lej PCB tshwm sim hauv qhov tsim, cov hauv qab no tuaj yeem siv los ua kom muaj kev sib npaug sib npaug, txo cov nqi tsim khoom PCB, thiab zam kev khoov PCB.Cov txheej txheem hauv qab no yog npaj raws li kev nyiam.

Ib txheej teeb liab thiab siv nws.Txoj kev no tuaj yeem siv tau yog tias lub hwj chim txheej ntawm tus tsim PCB yog txawm thiab cov teeb liab txheej yog khib.Cov txheej txheej ntxiv tsis nce tus nqi, tab sis nws tuaj yeem txo lub sijhawm xa khoom thiab txhim kho qhov zoo ntawm PCB.

Ntxiv ib txheej fais fab ntxiv.Txoj kev no tuaj yeem siv tau yog tias lub hwj chim txheej ntawm tus tsim PCB yog khib thiab cov teeb liab txheej txawm.Ib txoj hauv kev yooj yim yog ntxiv ib txheej hauv nruab nrab ntawm pawg tsis hloov lwm qhov chaw.Ua ntej, xa cov xov hlau nyob rau hauv khib-ntaus txheej PCB, tom qab ntawd luam cov txheej hauv av hauv nruab nrab, thiab kos cov txheej seem.Qhov no yog tib yam li cov yam ntxwv hluav taws xob ntawm ib txheej tuab ntawm cov ntawv ci.

Ntxiv ib txheej teeb liab dawb nyob ze ntawm qhov nruab nrab ntawm pawg PCB.Txoj kev no txo ​​qis qhov sib npaug ntawm qhov sib npaug thiab txhim kho qhov zoo ntawm PCB.Ua ntej, ua raws cov khib-ntaus khaubncaws sab nraud povtseg mus rau txoj kev, ces ntxiv ib tug dawb paug teeb liab txheej, thiab kos cov seem txheej.Siv nyob rau hauv microwave circuits thiab mixed media (dielectric constants) circuits.

Qhov zoo ntawm kev sib npaug laminated PCB

Tus nqi qis, tsis yooj yim rau khoov, txo lub sijhawm xa khoom thiab xyuas kom zoo.