Cov txheej txheem tsim khoom PCBA tuaj yeem muab faib ua ntau yam txheej txheem loj:
PCB tsim thiab txhim kho → SMT thaj ua haujlwm → DIP plug-in processing → PCBA test → peb txheej txheej → tiav cov khoom sib dhos.
Ua ntej, PCB tsim thiab txhim kho
1.Product xav tau
Ib lub tswv yim twg tuaj yeem tau txais cov txiaj ntsig zoo hauv kev ua lag luam tam sim no, lossis cov neeg nyiam xav ua kom tiav lawv tus kheej DIY tsim, ces cov khoom lag luam xav tau yuav raug tsim;
2. Tsim thiab tsim kho
Ua ke nrog cov neeg siv khoom xav tau, R & D engineers yuav xaiv cov khoom sib txuas thiab cov khoom siv hluav taws xob sab nraud ntawm PCB kev daws teeb meem kom ua tiav cov khoom xav tau, cov txheej txheem no kuj ntev, cov ntsiab lus koom nrog ntawm no yuav piav qhia nyias;
3, qauv sim ntau lawm
Tom qab kev txhim kho thiab tsim ntawm PCB ua ntej, tus neeg yuav khoom yuav yuav cov khoom siv sib xws raws li BOM muab los ntawm kev tshawb fawb thiab kev tsim kho kom ua tiav cov khoom tsim thiab kev debugging ntawm cov khoom, thiab kev sim ntau lawm muab faib ua pov thawj (10pcs), Secondary proofing (10pcs), me me batch sim ntau lawm (50pcs ~ 100pcs), loj batch sim ntau lawm (100pcs ~ 3001pcs), thiab ces yuav nkag mus rau lub loj ntau lawm theem.
Thib ob, SMT thaj ua haujlwm
Cov txheej txheem ntawm SMT thaj ua tiav yog muab faib ua: cov khoom ci → solder paste nkag → SPI → mounting → reflow soldering → AOI → kho
1. Cov ntaub ntawv ci
Rau cov chips, PCB boards, modules thiab cov khoom tshwj xeeb uas muaj nyob rau hauv Tshuag rau ntau tshaj 3 lub hlis, lawv yuav tsum tau ci ntawm 120 ℃ 24H. Rau MIC microphones, LED teeb thiab lwm yam khoom uas tsis tiv taus qhov kub thiab txias, lawv yuav tsum tau ci ntawm 60 ℃ 24H.
2, solder paste nkag (rov qab kub → nplawm → siv)
Vim tias peb cov tshuaj nplaum nplaum yog khaws cia rau hauv ib puag ncig ntawm 2 ~ 10 ℃ rau lub sijhawm ntev, nws yuav tsum tau rov qab mus rau qhov kub thiab txias ua ntej siv, thiab tom qab qhov kub thiab txias, nws yuav tsum tau nplawm nrog ib rab diav, thiab tom qab ntawd nws tuaj yeem ua tau. luam tawm.
3. SPI3D kuaj pom
Tom qab cov ntawv nplaum tau luam tawm ntawm lub rooj tsavxwm, PCB yuav ncav cuag SPI ntaus ntawv los ntawm txoj siv conveyor, thiab SPI yuav kuaj xyuas qhov tuab, qhov dav, ntev ntawm cov ntawv luam tawm thiab qhov zoo ntawm cov tin nto.
4. Mount
Tom qab lub PCB ntws mus rau lub tshuab SMT, lub tshuab yuav xaiv cov khoom tsim nyog thiab muab tso rau hauv tus lej me me los ntawm kev teeb tsa;
5. Reflow vuam
Lub pcb ntim nrog cov khoom ntws mus rau pem hauv ntej ntawm reflow vuam, thiab dhau los ntawm kaum kauj ruam qhov kub thiab txias zones ntawm 148 ℃ to 252 ℃ nyob rau hauv lem, ruaj ntseg bonding peb cov khoom thiab PCB board ua ke;
6, kev xeem AOI online
AOI yog ib qho khoom siv kho qhov muag tsis siv neeg, uas tuaj yeem tshawb xyuas PCB pawg thawj coj saib tawm ntawm lub qhov cub los ntawm kev txheeb xyuas qhov tseeb, thiab tuaj yeem tshawb xyuas seb puas muaj cov khoom siv tsawg dua ntawm PCB pawg thawj coj saib, seb cov khoom puas tau hloov pauv, seb puas muaj kev sib txuas ntawm cov khoom sib txuas. cov khoom thiab seb cov ntsiav tshuaj puas yog offset.
7. Kho
Rau cov teeb meem pom ntawm PCB pawg thawj coj saib hauv AOI lossis manually, nws yuav tsum tau kho los ntawm tus kws kho tsheb, thiab lub rooj tsav xwm kho PCB yuav raug xa mus rau DIP plug-in ua ke nrog lub rooj tsav xwm offline.
Peb, DIP plug-in
Cov txheej txheem ntawm DIP plug-in yog muab faib ua: shaping → plug-in → yoj soldering → txiav ko taw → tuav tin → ntxuav phaj → soj ntsuam zoo
1. Kev phais yas
Cov khoom siv plug-in peb yuav yog txhua yam khoom siv, thiab tus pin ntev ntawm cov ntaub ntawv peb xav tau yog qhov sib txawv, yog li peb yuav tsum ua kom zoo li tus taw ntawm cov ntaub ntawv ua ntej, kom qhov ntev thiab cov duab ntawm ko taw yooj yim rau peb. mus nqa tawm plug-in los yog tom qab vuam.
2. Plug-in
Cov khoom tiav lawm yuav muab tso rau raws li tus qauv coj;
3, yoj soldering
Lub phaj ntxig yog muab tso rau ntawm lub jig mus rau pem hauv ntej ntawm yoj soldering. Ua ntej, cov flux yuav raug txau rau hauv qab los pab vuam. Thaum lub phaj tuaj txog rau sab saum toj ntawm lub cub tawg, cov tin dej hauv lub qhov cub yuav ntab thiab hu rau tus pin.
4. Txiav ko taw
Vim tias cov khoom siv ua ntej yuav muaj qee qhov tshwj xeeb uas yuav tsum tau muab tso rau ib sab ntev dua tus pin, los yog cov khoom tuaj nws tus kheej tsis yooj yim rau kev ua, tus pin yuav raug txiav mus rau qhov siab tsim nyog los ntawm phau ntawv trimming;
5. tuav tin
Tej zaum yuav muaj qee qhov tshwm sim tsis zoo xws li qhov, pinholes, tsis tuaj yeem vuam, vuam tsis tseeb thiab lwm yam hauv cov pins ntawm peb lub rooj tsavxwm PCB tom qab qhov cub. Peb lub tin tuav yuav kho lawv los ntawm kev kho phau ntawv.
6. Ntxuav lub rooj tsavxwm
Tom qab cov yoj vuam, kho thiab lwm yam txuas rau pem hauv ntej-kawg, yuav muaj qee qhov seem seem lossis lwm yam khoom raug nyiag nrog rau tus pin txoj hauj lwm ntawm lub rooj tsavxwm PCB, uas yuav tsum tau peb cov neeg ua haujlwm los ntxuav nws qhov chaw;
7. Kev soj ntsuam zoo
PCB board Cheebtsam yuam kev thiab kev kuaj xyuas, tsis tsim nyog PCB pawg thawj coj saib yuav tsum tau kho, kom txog thaum tsim nyog mus rau kauj ruam tom ntej;
4. PCBA xeem
PCBA xeem tuaj yeem muab faib ua ICT test, FCT test, aging test, vibration test, etc
PCBA xeem yog ib qho kev xeem loj, raws li cov khoom sib txawv, cov neeg siv khoom sib txawv, qhov kev xeem txhais tau tias siv sib txawv. ICT xeem yog txhawm rau txheeb xyuas qhov kev sib txuas ntawm cov khoom sib txuas thiab qhov kev sib txuas ntawm cov kab, thaum FCT xeem yog txhawm rau txheeb xyuas cov tswv yim thiab cov khoom tawm ntawm PCBA pawg thawj coj saib xyuas seb lawv puas ua tau raws li qhov yuav tsum tau ua.
Tsib: PCBA peb los tiv thaiv txheej
PCBA peb txheej txheej txheej txheej yog: txhuam sab A → nto qhuav → txhuam sab B → chav kub kho 5. Txau thickness:
0.1mm-0.3 hli 6. Tag nrho cov txheej txheem txheej yuav tsum tau ua ntawm qhov kub tsis qis dua 16 ℃ thiab cov av noo qis dua 75%. PCBA peb txheej txheej tseem muaj ntau, tshwj xeeb tshaj yog qee qhov kub thiab av noo ib puag ncig hnyav dua, PCBA txheej peb cov xim muaj cov rwb thaiv tsev zoo dua, noo noo, xau, poob siab, plua plav, corrosion, tiv thaiv kev laus, tiv thaiv mildew, anti- qhov chaw xoob thiab rwb thaiv tsev corona tsis kam ua haujlwm, tuaj yeem txuas ntxiv lub sijhawm cia ntawm PCBA, kev sib cais ntawm kev yaig sab nraud, muaj kuab paug thiab lwm yam. Txau txoj kev yog txoj kev siv txheej txheej ntau tshaj plaws hauv kev lag luam.
Ua tiav cov khoom sib dhos
7.Cov coated PCBA board nrog qhov kev xeem OK yog sib sau ua ke rau lub plhaub, thiab tom qab ntawd tag nrho lub tshuab yog kev laus thiab kev sim, thiab cov khoom tsis muaj teeb meem los ntawm kev kuaj kev laus tuaj yeem xa tuaj.
PCBA ntau lawm yog qhov txuas rau qhov txuas. Txhua qhov teeb meem hauv cov txheej txheem pcba ntau lawm yuav muaj kev cuam tshuam zoo rau tag nrho cov khoom zoo, thiab txhua txoj kev yuav tsum tau tswj nruj me ntsis.