PCB Kev Tsim Kho Cov Txheej Txheem

PCB (luam tawm cov boardcuit Coffic board), lub npe Suav hu ua cov luam tawm Circuit Court, tseem hu ua cov khoom siv hluav taws xob hluav taws xob, yog cov kev txhawb nqa hluav taws xob, yog lub cev txhawb nqa ntawm cov hluav taws xob. Vim tias nws tau ua los ntawm kev luam ntawv hluav taws xob, nws yog hu ua "luam tawm" Circuit Court board.

Ua ntej PCBs, circuits tau ua los ntawm taw tes-rau-taw tes xaim. Qhov kev ntseeg tau ntawm hom no yog tsawg heev, vim tias raws li cov kab hluav taws xob, qhov sib xyaw nrog txoj kab yuav ua rau kab lossis luv. Hlau hlau winding yog qhov ua ntej loj hauv Circuitity Technology, uas txhim kho lub peev xwm ntawm cov kab hlau me me ntawm tus ncej ntawm qhov txuas ntawm qhov sib txuas.

Raws li cov kev lag luam hluav taws xob hloov zuj zus los ntawm lub tshuab nqus tsev ntawm lub tshuab nqus tsev thiab relays rau silicon slamiconductors thiab kev sib tw ntawm cov hluav taws xob kuj tsis yeem. Cov khoom lag luam hluav taws xob tau tshwm sim hauv cov neeg siv khoom lag luam, kev ua kom pom cov chaw tsim khoom kom nrhiav cov kev daws teeb meem me me thiab muaj txiaj ntsig ntau dua. Yog li, PCB yug.

Kev tsim ntawm pcb yog qhov nyuaj heev, noj plaub-txheej prination

1, pcb teeb

Thawj kauj ruam hauv PCB ntau lawm yog npaj thiab kuaj cov PCB teeb meem. Lub PCB tsim cov khoom lag luam tau txais cov ntaub ntawv cad ntawm PCB tsim tuam txhab, thiab txij li txhua CAD cov ntaub ntawv txhais tau - txuas ntxiv Gerber Rs-274x lossis Gerber X2. Tom qab ntawd tus engineer ntawm lub hoobkas yuav tshuaj xyuas seb PCB qhov teeb meem conforms rau cov txheej txheem ntau lawm thiab txawm muaj qee yam tsis xws luag thiab lwm yam teeb meem.

2, Qaum Phaj Ntau Lawm

Ntxuav lub tooj liab clad phaj, yog tias muaj hmoov av, nws yuav ua rau lub voj voos luv luv lossis tawg.

Tus 8-txheej pcb: nws yog ua tau los ntawm 3 tooj liab-coated daim hlau (cov phiaj tseem ceeb) ntxiv 2 tooj liab cov duab kos, thiab tom qab ntawd nws tau sib raug zoo. Cov ua ntu zus ntau zuj zus pib los ntawm cov kab nruab nrab (4 lossis 5 txheej ntawm kab), thiab yog tas li ua ke thiab tom qab ntawd. Kev tsim ntawm 4-txheej pcb yog zoo sib xws, tab sis tsuas yog siv 1 tus tub ntxhais tub ntxhais thiab 2 tooj liab cov yeeb yaj kiab.

3, sab hauv pcb letout hloov

Ua ntej, ob txheej ntawm feem ntau Central Core Board (Core) yog ua. Tom qab tu, lub tooj-clad phaj yog them nrog cov yeeb yaj kiab duab. Zaj ua si ua solortifies thaum raug rau lub teeb, tsim zaj duab xis tiv thaiv tshaj tus tooj liab ntawv ntawm lub tooj liab-clad phaj.

Ob-txheej pcb legout zaj duab xis thiab ob-txheej Ciaj Khaub Ncaws Phaj Qoob loo Poster zaj duab xis kom ntseeg tau tias cov txheej txheem sab saud kom ntseeg tau tias yog cov duab pcb

Lub rhiab rhiab lub suab nrov ntawm cov ntawv zaj duab xis ntawm tus tooj liab ntawv ci nrog UV teeb. Hauv qab zaj duab xis pob tshab, cov yeeb yaj kiab rhiab yog kho tau, thiab nyob rau hauv zaj duab xis opaque, tseem tsis tau kho cov yeeb yaj kiab rhiab. Tus tooj liab ntawv ci tau nyob hauv qab cov duab kos duab yog qhov yuav tsum muaj pcb kab, uas yog sib npaug ntawm cov ntawv luam tawm laser tso rau hauv phau ntawv PCB.

Tom qab ntawd cov yeeb yaj kiab uncured tau ntxuav nrog cov kab ua lus lye, thiab cov yuav tsum tooj liab ntawv ci ntawv yuav them los ntawm cov yeeb yaj kiab cov duab yeeb yaj kiab.

Cov tsis xav tau tooj liab ntawv ci yog tom qab ntawd etched deb nrog lub zog alkali, xws li naoh.

Dua lub ntsej muag pleev cov yeeb yaj kiab kom ua rau cov ntawv ci tooj liab xav tau rau PCB cov kab ntawv.

4, Qaum phaj Drilling thiab Kev Soj Ntsuam

Cov ntsiab lus tseem ceeb tau ua tiav. Tom qab ntawd punch ib lub qhov sib luag hauv cov ntsiab lus tseem ceeb los pab txhawb kev sib txuas nrog lwm cov ntaub ntawv raw tom ntej

Thaum cov tub ntxhais lub tub ntxhais yog nias ua ke nrog lwm cov khaubncaws sab nraud povtseg ntawm PCB, nws tsis tuaj yeem hloov kho, yog li tshuaj ntsuam yog qhov tseem ceeb heev. Lub tshuab yuav cia li piv nrog PCB teeb duab kos duab los kuaj xyuas kom raug.

5. Laminate

Ntawm no yog cov khoom siv tshiab hu ua Semi-yuav khoom, uas yog txheej txheem core core thiab sab nraud ntawm tooj liab ntawv ci, thiab tseem ua lub luag haujlwm ntawm rwb thaiv tsev.

Cov ntawv nyeem me me hauv nruab nrab thiab ob txheej ntawm daim ntawv ci ua ke, thiab tom qab ntawd cov txheej ntawm cov phaj tooj liab, thiab tom qab ntawd cov txheej txheem tooj liab ntawm cov phaj pressurized aluminium phaj yog them rau ntawm cov tseem ceeb phaj nyob rau hauv lem.

Tus PCB cov laug cam uas tau clamped los ntawm cov hlau hlau tau muab tso rau ntawm lub ntsej muag, thiab tom qab ntawd xa mus rau lub tshuab nqus tsev kub rau cov lus lamination. Qhov kub ntawm lub tshuab nqus tsev kub jelts lub epoxy cob qhia nyob rau hauv lub plhaw ib nrab thiab copper ntawv ci ua ke thaum siab.

Tom qab cov lamination ua tiav, tshem cov hlau sab saum toj nias lub PCB. Tom qab ntawd cov nias phaj txhuas zaum, thiab lub phaj qub kuj tseem yog kev sib cais ntawm cov lej sib txawv thiab ua kom lub tooj liab sab nraud yog tus. Lub sijhawm no, ob tog ntawm PCB coj tawm yuav them los ntawm ib txheej ntawm du tooj liab ntawv nyiaj.

6. Drilling

Txhawm rau txuas plaub txheej ntawm tsis sib tham tooj liab ntawv ci hauv PCB ua ke los ntawm pcb, thiab tom qab ntawd tuaj yeem tso tawm ntawm phab ntsa.

Lub x-tshav khib drilling tshuab yog siv los nrhiav cov tub ntxhais sab hauv, thiab tom qab ntawd punch lub qhov chaw ntawm tus PCB kom ntseeg tau tias qhov chaw khiav tawm tom ntej yog los ntawm lub qhov.

Muab ib txheej ntawm aluminium daim ntawv ntawm cov punch tshuab thiab tso tus PCB ntawm nws. Txhawm rau txhim kho kev ua tau zoo, 1 txog 3 tus kab mob PCB zoo ib yam yuav tau muab sib xyaw ua ke rau cov txheej txheem perforation raws li cov lej pcb. Thaum kawg, ib txheej ntawm txhuas phaj yog them rau saum pcb, thiab sab sauv yog li qub yog li drilling, tus tooj liab ntawv ntawm tus PCB yuav tsis ntuag.

Nyob rau hauv cov txheej txheem lamination yav dhau los, lub melted epoxy resin tau nyem rau sab nraud ntawm PCB, yog li nws yuav tsum tau muab tshem tawm. Lub tshuab hluav taws xob milling profile txiav cov periphery ntawm PCB raws li cov kab ntawv nyeem ntawv XYLE tseeb.

7. Copper cov tshuaj tivthaiv nag lossis daus ntawm lub pore phab ntsa

Txij li yuav luag txhua pcb tsim siv perforations los txuas txheej sib txawv ntawm xaim, qhov kev sib txuas zoo yuav tsum muaj cov duab hluav taws xob zoo rau lub qhov phab ntsa lub qhov. Qhov tuab ntawm tooj liab zaj duab xis yuav tsum tau ua tiav los ntawm electroplating, tab sis lub qhov thaiv lub qhov muag yog tsim los ntawm kev ua haujlwm epoxy tsis zoo thiab fiberglass board.

Yog li ntawd, thawj kauj ruam yog los ua ib txheej ntawm cov khoom siv ntawm phab ntsa, thiab tsim ib lub ntsej muag liab, thiab ua ib lub ntsej muag liab qab, suav nrog lub qhov ntsa thawj, nrog rau cov phab ntsa lub qhov, los ntawm kev tso zis siv tshuaj lom neeg. Tag nrho cov txheej txheem, xws li tshuaj lom neeg thiab tu tshuaj thiab tu, yog tswj los ntawm lub tshuab.

Tsau PCB

Huv pcb

Thauj pcb

8, lub pcb offout hloov chaw

Tom ntej no, cov txheej txheem PCB sab nraud yuav raug pauv mus rau cov ntawv xov tooj liab thiab cov duab sib txawv yog cov yeeb yaj kiab zoo yog tias cov yeeb yaj kiab zoo.

Lub hnab ntim pcb sab hauv pcb Tus PCB yog them los ntawm cov duab zaj duab xis ua yeeb yaj kiab rau kab, tshuaj pleev cov kab lus tsis zoo, tshuaj pleev tus tooj liab pectout ua yeeb yaj kiab thiab sab laug.

Cov teeb meem PCB sab nraud hloov adopts txoj kev ua tiav, thiab zaj yeeb yaj kiab zoo yog siv los ua lub rooj tsavxwm. Tus PCB yog them los ntawm cov yeeb yaj kiab kho tau rau qhov tsis-kab cheeb tsam. Tom qab ntxuav lub uncured cov duab zaj duab xis, electroplating yog ua. Qhov twg muaj zaj duab xis, nws tsis tuaj yeem yog electroplated, thiab qhov twg tsis muaj zaj duab xis, nws yog plated nrog tooj liab thiab tom qab ntawd tin. Tom qab zaj duab xis tau muab tshem tawm, Alkaline etching yog ua, thiab thaum kawg lub tin raug tshem tawm. Cov kab qauv sab laug rau ntawm lub rooj tsavxwm vim tias nws muaj kev tiv thaiv los ntawm tin.

Clamp pcb thiab electroplate tooj liab mus rau nws. Raws li tau hais ua ntej lawm, nyob rau hauv thiaj li yuav kom ntseeg tau tias lub qhov muaj qhov zoo txaus rau ntawm lub qhov thickness, yog li tag nrho cov kab ke yuav tau tswj hwm los ntawm lub khoos phis tawm kom ntseeg tau tias nws yog qhov tseeb.

9, sab nraud pcb etching

Qhov txheej txheem etching yog tom qab ua tiav los ntawm kev ua tiav kev siv raj xa dej ua tiav. Ua ntej tshaj plaws, cov duab kos kho cov duab ntawm PCB pawg thawj coj saib. Nws yog tom qab ntawd ntxuav nrog lub zog alkali kom tshem tawm cov tsis xav tau tooj liab ntawv ntawv ci los ntawm nws. Tom qab ntawd tshem tawm cov txheej tin ntawm pcb layout tooj liab ntawv ci nrog cov kev daws teeb meem. Tom qab tu, lub 4-txheej pcb teeb ua tiav.