Conductive qhov ntawm lub qhov tseem hu ua ntawm lub qhov. Txhawm rau kom tau raws li cov neeg siv khoom, cov Circuit Court Board ntawm qhov yuav tsum tau ntsaws. Tom qab kev xyaum ntau, cov tsoos couck ntsaws cov txheej txheem hloov, thiab cov Circuit Court Board Qhov ncauj thiab ntsaws ruaj nrog Mesh. lub qhov. Kev tsim khoom ruaj khov thiab txhim khu kev qha zoo.
Ntawm lub qhov ua si lub luag haujlwm ntawm kev sib txuas lus thiab kev cob qhia cov kab. Kev txhim kho cov kev lag luam hluav taws xob kuj tseem txhawb kev txhim kho ntawm PCB, thiab tseem muab cov khoom lag luam rau pem hauv ntej cov ntawv tshaj tawm thiab cov khoom siv nto sib dhos. Ntawm qhov plugging tshuab tuaj rau hauv kev ua neeg, thiab yuav tsum ua kom tau raws li cov cai hauv qab no:
(1) Tsuas yog tooj liab nyob rau hauv lub qhov, thiab cov daim npog qhov ncauj hlau tuaj yeem raug ntsaws lossis tsis ntsaws;
(2) Yuav tsum muaj tin thiab coj nyob rau hauv lub qhov, nrog rau ib tug thickness yuav tsum tau nkag rau lub qhov, ua rau Tin hlaws rau hauv lub qhov;
(3) Kev los ntawm qhov yuav tsum muaj daim npog ntsej muag me me, opaque, thiab yuav tsum tsis txhob muaj tin rings, tin yuav tsum muaj.
Nrog rau kev txhim kho cov khoom siv hluav taws xob hauv kev coj ntawm "nyias, nyias, pcbs kuj tau tsim mus rau qhov siab thiab qhov nyuaj. Yog li ntawd, coob tus ntawm SMT thiab BGA PCBs tau tshwm sim, thiab cov neeg yuav tsum tau ntsaws thaum mounting Cheebtsam, feem ntau tsib lub zog:
(1) Tiv thaiv kev sib tw luv luv tshwm sim los ntawm tin dhau los ntawm cov khoom sib txawv los ntawm lub qhov thaum tus PCB yog yoj solded; Tshwj xeeb tshaj yog thaum peb muab lub qhov muag ntawm BGA ncoo, peb yuav tsum xub muab lub ntsaws lub thiab tom qab ntawd cov kub-plated los pab txhawb lub BGA soldering.
(2) Tsis txhob zam flux nyob hauv qhov chaw;
(3) Tom qab cov npoo mounting ntawm lub Hoobkas hluav taws xob thiab cov sib dhos ntawm cov khoom siv tau ua tiav, PCB yuav tsum tau nqus los ua qhov tsis zoo ntawm lub tshuab kuaj kom tiav:
(4) Tiv thaiv kev ham satering los ntawm ntws mus rau hauv lub qhov, ua rau tsis muaj tseeb soldering thiab cuam tshuam rau kev tso kawm;
(5) Tiv thaiv cov tin beads los ntawm popping los ntawm poping thaum thaum yoj soldering, ua rau muaj kev voj voog luv luv.
Kev paub txog ntawm CAPERIVE LUB QHOV TSEEB TUG
Rau nto mount camnas, tshwj xeeb yog BGA thiab IC Mounting, cov ntawm plug yuav tsum tiaj, convave ntxiv lossis rho tawm 1mil, thiab yuav tsum tsis muaj cov xim liab ntawm ntug ntawm lub qhov; Cov ntawm lub qhov zais cov pob, txhawm rau kom ncav cuag cov neeg siv khoom txheej txheem ntawm ntsaws ntawm qhov tuaj yeem piav qhia ntau yam. Cov txheej txheem ntws tau tshwj xeeb heev ntev thiab cov txheej txheem tswj yog qhov nyuaj. Feem ntau muaj teeb meem xws li roj poob thaum cua sov leveling thiab cov roj ntsuab solder tiv thaiv kev sim; Roj tawg roj tom qab kho tau. Tam sim no raws li qhov tseeb ntawm kev tsim khoom ntawm cov txheej txheem ntawm PCB yog cov ntsiab lus, thiab qee qhov kev sib piv thiab qee yam thiab qhov tsis zoo:
NCO TSEG: Tus txheej txheem ua hauj lwm ntawm Kev kub kub theem yog siv cov khoom siv kub thiab cov khoom siv hluav taws xob tsis muaj zog
1. Cov txheej txheem plugging tom qab kub huab cua
Cov txheej txheem ntws yog: Pawg Thawj Coj Daim Npog Qhov ncauj → Hal → Plug Lub Qhov → Kho Lub Qhov → Kev Kho Mob. Cov kev ntsaws cov txheej txheem yog saws rau kev tsim khoom. Tom qab huab cua kub leveling, aluminium ntawv pov thawj screen yog siv los ua kom tiav cov plugged yuav tsum tau los ntawm cov neeg siv khoom rau txhua lub laj rog. Lub khob dej khov kho tuaj yeem yog cov number casecensitive mem kua lossis thermosetting ink. Xws li ua kom pom cov xim tib yam ntawm cov zaj duab xis ntub, nws yog qhov zoo tshaj plaws los siv tib lub number case raws li pawg thawj coj. Tus txheej txheem no tuaj yeem ua kom ntseeg tau tias dhau ntawm qhov yuav tsis poob rau tom qab huab cua kub tau yooj yim rau cov chloal check kom paug cov thawj coj thiab tsis sib xws. Cov neeg siv khoom lag luam yog tus nquag siv cuav soldering (tshwj xeeb yog nyob rau hauv BGA) thaum lub sijhawm mounting. Yog li ntau cov neeg muas zaub tsis kam txais cov qauv no.
2. Cov huab cua kub leveling thiab txhaws cov txheej txheem
2.1 Siv Aluminium daim ntawv kom ntsaws lub qhov, sololify, thiab polish lub rooj tsavxwm rau cov duab hloov
Qhov txheej txheem thev naus laus zis siv lub tshuab drilling lub tshuab hluav taws xob kom rub tawm cov ntawv txhuas kom ua kom pom tseeb kom ntseeg tau tias qhov muag tau tag nrho. Lub ntsaws lub qhov chek kua mem kua txiv kuj tseem siv tau nrog cov number case thermosetting, thiab nws cov yam ntxwv yuav tsum muaj zog. , Cov shrinkage ntawm lub cob yog me me, thiab kev sib koom tes nrog lub zog nrog lub qhov ntsa yog qhov zoo. Cov txheej txheem ntws yog: Kev Kho Mob Ua Ntej Cov qauv no tuaj yeem ua kom paub meej tias lub qhov ntsaws lub qhov ntsaws ntawm lub qhov yog tiaj tus, thiab yuav tsis muaj teeb meem zoo xws li cov roj tawg thiab roj ntws ntawm ntug ntawm lub sijhawm thaum muaj huab cua kub. Txawm li cas los xij, tus txheej txheem no yuav tsum muaj ib-caug thickening ntawm tooj liab los ua tus tooj liab tuab ntawm lub qhov ntsa uas muaj lub ntsa. Yog li ntawd, qhov yuav tsum tau rau tooj plating plating ntawm tag nrho cov phaj yog heev, kom ntseeg tau tias lub tshuab tooj liab tau muab tshem tawm tag nrho, thiab cov tooj liab saum toj no thiab tsis muaj kuab paug. Ntau lub pcb factories tsis muaj ib lub hom phiaj tooj liab ua kom tuab, thiab cov khoom ua haujlwm tsis tau raws li qhov yuav tsum tau ua, ua rau tsis ntau siv cov txheej txheem no hauv PCB cov ntaub ntawv.
2.2 Tom qab ntsaws lub qhov nrog aluminium ntawv, screen ncaj qha-luam tawm cov pawg thawj daim npog qhov ncauj
Cov txheej txheem no siv lub tshuab drilling catal dring tawm ntawm lub vijtsam luam ntawv rau lub vijtsam luam ntawv, thiab ua tiav 36t screen rau screen ntawm lub rooj tsavxwm. Cov txheej txheem ntws yog: pretreatment-plob lub voj voos screen-pre-ci-kev tsim kho-kev txhim kho-kev tsim kho
Cov txheej txheem no tuaj yeem ua kom pom tseeb tias qhov ntawm ntawm qhov yog zoo them nrog roj, lub qhov ntsaws lub qhov tiaj, thiab cov xim zaj duab xis nyob ib puag ncig. Tom qab huab cua kub yog leveled, nws tuaj yeem paub tseeb tias lub qhov tsis muaj tinn tsis zais cov kua zaub hauv lub qhov taub ua rau cov tsis zoo solderility; Tom qab cov huab cua kub yog leved, cov npoo ntawm vias yog qhov npau taws thiab roj tau muab tshem tawm. Nws yog qhov nyuaj rau kev tswj hwm cov txheej txheem no los tswj kev tsim khoom, thiab nws yog qhov tsim nyog rau cov txheej txheem cov txheej txheem thiab cov tsis muaj txiaj ntsig los ua kom zoo ntawm lub ntsaws lub ntsaws.
2.3 Daim ntawv txhuas tau ntsaws rau hauv lub qhov, tsim, kho ua ntej ua ntej, thiab polished, thiab tom qab ntawd cam cam ntsej muag ua tau.
Siv lub tshuab tshuab hluav taws xob kom tho tawm cov ntawv txhuas uas yuav tsum tau ntsaws lub qhov kom ua rau lub vijtsam, nruab nws ntawm kev hloov tsheb tshuab luam ntawv rau lub qhov. Lub ntsaws lub qhov ntsaws yuav tsum puv thiab protruding ntawm ob sab, thiab tom qab ntawd solorify thiab zom cov txiag board rau kev kho deg. Cov txheej txheem ntws yog: kev kho mob-ntsaws lub qhov-ua ntej-kev tsim kho-ua ntej-kho-board-board-board thaj chaw npog ntsej muag. Vim tias cov txheej txheem no siv lub qhov ntsaws lub qhov los xyuas kom meej tias qhov tsis txaus siab, tab sis tom qab hab, tab sis tom qab muaj kev nyuaj rau kev daws tau, yog li muaj ntau tus neeg siv khoom tsis lees txais lawv.
2.4 Lub rooj tsav xwm Daws daim npog ntsej muag thiab ntsaws lub qhov yog ua tiav tib lub sijhawm.
Cov qauv no siv tau 36T (43t) tshuaj ntsuam, muab cov txheej txheem sib tw, cov txheej txheem ntws tawm yog: Detrectment-ci-ci-surning-caping. Cov txheej txheem lub sijhawm yog luv luv, thiab tus nqi ntawm kev siv ntawm cov cuab yeej yog siab. Nws tuaj yeem ua kom ntseeg tau tias kev hla lub qhov yuav tsis poob rau cov roj thiab vim tias cov cua sov yog siv rau kev ntsaws cov cua, muaj ntau ntawm cov huab cua hauv txoj kev vias. Thaum lub sij hawm kho, cov huab cua nthuav dav thiab tawg los ntawm daim npog qhov ncauj lus, ua rau kab noj hniav thiab tsis sib luag. Yuav muaj ib qho me me ntawm tin los ntawm cov qhov rau cov huab cua kub theem. Tam sim no, tom qab cov kev sim loj, peb lub tuam txhab tau xaiv sib txawv ntawm cov inks thiab cov kab mob tsis sib xws, thiab tau swm rau cov txheej txheem no rau ntau lawm.