Cov kev cai dav dav rau PCBA outsourcing yog dab tsi?
Oct 07, 2019
Rau qee lub PCBA ua cov haujlwm, thaum lub sijhawm kev lag luam muaj kev lag luam loj kawg thaum lub Cuaj Hli mus txog Kaum Ob Hlis, ntau cov PCBA ua kev txiav txim yuav raug txais. Vim li no, ntau lub PCBA ua khoom lag luam yuav coj PCBA outsourced kev ua haujlwm thaum lawv tsis tuaj yeem teem sijhawm ntau lawm. PCBA outsourcing processing yog hais txog qhov outsourcing ntawm PCBA txiav txim los ntawm PCBA ua cov tuam txhab rau lwm lub peev xwm PCBA ua chaw tsim khoom. Yog li, dab tsi yog cov kev cai dav dav rau PCBA outsourcing?
I. Cov Ntawv Them Nqi
Cov khoom siv yuav tsum tau muab tso los yog tso rau hauv nruj raws li cov nqi ntawm cov ntaub ntawv, PCB silkscreen thiab outsourcing processing requirements. Thaum cov khoom siv tsis ua raws li cov nqi ntawm cov khoom siv, PCB silkscreen, lossis cov teeb meem nrog cov txheej txheem cov cai, lossis cov kev cai tsis meej thiab tsis tuaj yeem ua haujlwm, nws yuav tsum tau tiv tauj peb lub tuam txhab kom paub meej cov khoom thiab cov txheej txheem xav tau.
Thib ob, qhov kev tiv thaiv kev tiv thaiv zoo li qub
1. Txhua qhov sib kho yog kho zoo li qub rhiab khoom siv.
2. Txhua tus neeg uas tau chwv nrog cov khoom sib xyaw thiab cov khoom lag luam yuav tsum hnav khaub ncaws antistatic, saws tes antistatic, thiab khau tiv thaiv antistatic.
3. Nyob rau theem ntawm cov ntaub ntawv nyoos nkag mus rau hauv lub Hoobkas thiab chaw cia khoom, cov khoom siv hluav taws xob tsis zoo rau txhua tus muaj cov khoom coj los tiv thaiv.
4. Thaum lub sijhawm ua haujlwm, siv cov haujlwm ua haujlwm antistatic, thiab cov khoom siv thiab cov khoom ua tiav ib nrab yuav tsum tau muab cia rau hauv cov thawv tiv thaiv kabmob.
5. Cov khoom siv vuam vuam yog cov ntseeg ruaj khov, thiab cov hluav taws xob tooj hlau yog anti-static. Lawv yuav tsum tau sim ua ntej siv.
6, PCB board pawg thawj cov khoom tiav tau muab cia thiab thauj hauv lub thawv tiv thaiv zoo li qub, thiab cov khoom siv cais tawm yog siv hauv cov paj rwb los tiv thaiv zoo li qub.
7. Lub tshuab tag nrho tsis muaj plhaub siv lub hnab ntim los tiv thaiv kev tiv thaiv zoo li qub.
3. Cov kev cai ntawm cov kev taw qhia ntawm cov khoom sib xyaw ua cim ntaus cim tso tawm
1. Cov yam ntxwv ci ntsa iab tau ntxig raws li kev paub meej.
2. Thaum cov Cheebtsam luam tawm ntawm sab (xws li high-voltage ceramic capacitors) raug tso ncaj ntsug, daim kab mob silk yog taw qhia rau sab xis; thaum kab rov tav, ntxaij hauv tshuaj ntsuam txhob lo lo ntxhuav yog taw qhia mus rau hauv qab. Thaum cov Cheebtsam luam tawm nyob rau sab saum toj (tsis suav nrog lub ntsuas hluav taws xob) muab tso rau kab rov tav, tus qauv kev coj ua yog tib yam li ntawm PCB luam ntawv luam ntawv; thaum muab tso ua ntej ntsug, lub sab qaum ntawm cov font ntsib txoj cai.
3. Thaum lub siab tsis kam tso rau ua ntej lawm, lub cim xim yuam kev ntsib lub ntsej muag zoo; thaum lub kab rov tav yog vertically ntxig, qhov yuam kev xim nplhaib yog tig mus rau hauv qab; thaum cov ua hauj yog vertically ntxig, qhov yuam kev xim nplhaib yog ntsib lub rooj tsavxwm.
Plaub, vuam raws
1. Qhov kom siab siab ntawm cov pins ntawm cov khoom siv txuas ntawm lub ntsej muag soldering yog 1.5 mus rau 2.0 hli. Lub thaj ua ke yuav tsum yog tiaj nyob saum npoo ntawm pawg thawj coj saib, pob qij txha pob qij txha yuav tsum ua kom du tsis muaj burrs, thiab me ntsis arc-puab, thiab ham yuav tsum ntau tshaj 2/3 ntawm qhov siab ntawm ham kawg, tab sis yuav tsum tsis pub tshaj qhov siab ntawm ham kawg. Tsawg cov tin, cam pob ntxig yog kheej kheej, los yog yob cov zom zaws yog txhua yam tsis zoo;
2. Solder sib koom qhov siab: Qhov siab ntawm ham txoj kev nce toj txhuas tus pin tsis yog tsawg dua 1 hli ntawm ib lub vaj huam sib luag, thiab tsis pub tsawg tshaj 0.5 hli ntawm lub vaj huam sib luag ob tog, thiab kev nkag mus rau tin yuav tsum.
3. Muag pob qij ua qauv: nws yog conical thiab npog tag nrho ncoo.
4, solder sib koom tes nto: du, ci, tsis muaj qhov tsaus nti, flux thiab lwm cov khib nyiab, tsis muaj qhov ntsia hlau, pits, qhov hws, raug tooj liab thiab lwm yam tsis xws luag.
5, solder sib koom tes muaj zog: tag nrho ntub dej nrog cov ntaub qhwv thiab cov pins, tsis muaj virtual soldering, soldering tsis tseeb.
6. Hla ntu ntawm cam pob qij txha: Kev tivthaiv kev txiav ko taw yuav tsum tsis txhob txiav rau qhov muag feem ntau li ntau tau, thiab tsis muaj lub hau tawg rau ntawm qhov chaw hu ntawm tus pin thiab ham. Tsis muaj qhov sib dhos lossis cov twv rau ntawm cov ntoo khaub lig.
7.Thaum lub tog raj viav vias: Lub rooj zaum rab koob xav kom cov hlua hauv qab teeb tsa, thiab txoj hauj lwm yog thiab qhov kev coj ua yog. Tom qab lub rooj zaum rab koob yog welded, hauv qab ntab qhov siab tsis ntau tshaj li 0.5 hli, thiab lub rooj zaum lub cev tsis skew dhau lub silk screen thav duab. Cov kab ntawm lub rooj zaum ntawm lub rooj zaum tseem yuav tsum ua kom zoo ib yam, thiab tsis pub misalignment lossis tsis sib xws.
V. Kev Thauj Mus Los
Txhawm rau tiv thaiv PCBA kev puas tsuaj, cov khoom ntim hauv qab no yuav tsum tau siv thaum lub sijhawm kev thauj mus los:
1. Ntim: Lub thawv tiv thaiv anti-zoo li qub.
2. Kev rho tawm cov khoom siv: tiv thaiv zoo li qub hlaws paj rwb.
3. Qhov chaw tso nrug: Muaj qhov nrug deb tshaj 10mm ntawm PCB board thiab pawg thawj coj, thiab ntawm PCB board thiab lub thawv.
4. Qhov chaw siab: muaj qhov chaw siab tshaj 50 hli los ntawm sab saum toj sab saum toj ntawm lub thawv tig, kom paub tseeb tias lub thawv hloov khoom siv tsis tau nias rau lub zog, tshwj xeeb tshaj yog kev siv fais fab ntawm lub cable.
6. Cov yuav tsum tau ntxuav
Lub rooj tsavxwm saum npoo yuav tsum huv thiab dawb ntawm cov hlaws dai, tiv thaiv pins, thiab stains. Hauv tshwj xeeb, cov pob qij txha txuas ntawm lub ntsej muag ntxig yuav tsum tsis txhob pom cov khoom sib dhos los ntawm vuam. Thaum ntxuav lub rooj tsavxwm, cov khoom siv hauv qab no yuav tsum muaj kev tiv thaiv: cov xov hlau, txuas txuas, txuas ntxiv, hloov chaw, hluav taws xob polyester thiab lwm cov khoom siv tiv thaiv, thiab cov xa tawm yuav tsum tsis txhob raug ntxuav nrog ultrasonic tsis.
Xya, tom qab kev teeb tsa ntawm txhua lub Cheebtsam tsis raug tso cai dhau ntawm ntug ntawm PCB board.
8. Thaum lub PCBA dhau los ntawm lub tshuab ua kom sov, vim hais tias cov pins ntawm cov khoom siv txuas tau raug ntxuav los ntawm cov tin ntws, qee qhov txuas ntawm lub ntsej muag yuav qaij tom qab tau muag, uas yuav ua rau lub cev tiv thaiv kom dhau ntawm cov tshuaj ntsuam txhob lo lo ntxhuav. Cov. Hloov kho.