Rau SMT pawg thawj coj saib, tshwj xeeb tshaj yog rau BGA thiab IC muab tso rau ntawm qhov yuav tsum tau ua yuav tsum tau muab tshem tawm, lub qhov ntsaws qhov convex concave ntxiv lossis rho tawm 1 mil, tsis tuaj yeem muaj qhov taw qhia qhov ntug ntawm lub tin liab, qhia qhov yog Tibetan hlaws, thiaj li ua tau raws li Cov neeg siv khoom xav tau, ua cov txheej txheem ntsaws qhov yog ntau yam, tshwj xeeb tshaj yog cov txheej txheem ntev txaus, cov txheej txheem tswj tsis yooj yim, feem ntau hauv huab cua kub leveling thiab ntsuab roj tsis kam rau soldering sim tawm;Tom qab kho, roj tawg thiab lwm yam teeb meem tshwm sim.Raws li cov xwm txheej tsim khoom tiag tiag, ntau yam txheej txheem PCB plug qhov tau sau tseg, thiab cov txheej txheem thiab qhov zoo thiab qhov tsis zoo yog muab piv thiab piav qhia:
Lus Cim: Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm huab cua kub yog siv cov cua kub kom tshem tawm cov khoom siv ntau dhau ntawm qhov chaw thiab lub qhov ntawm lub rooj tsavxwm luam tawm, thiab cov khoom seem yog sib npaug ntawm lub ncoo thiab qhib cov kab thiab qhov chaw foob kho kom zoo nkauj, uas yog ib qho. ntawm txoj kev kho saum npoo ntawm cov ntawv luam tawm Circuit Board.
I. Plug qhov txheej txheem tom qab cua kub leveling
Cov txheej txheem ntws: phaj nto thaiv vuam → HAL → ntsaws qhov → kho.Cov txheej txheem tsis yog ntsaws qhov yog saws rau kev tsim khoom.Tom qab cua kub leveling, aluminium screen phaj los yog number case screen yog siv los ua kom tiav cov plug qhov ntawm tag nrho cov fortress raws li yuav tsum tau los ntawm cov neeg muas zaub.Plug qhov number case tuaj yeem ua tus number case rhiab lossis thermosetting number case, txhawm rau kom ntseeg tau qhov sib xws ntawm cov xim zaj duab xis ntub dej, plug qhov number case yog qhov zoo tshaj plaws siv nrog tib tus number case board.Cov txheej txheem no tuaj yeem ua kom ntseeg tau tias huab cua kub theem tom qab lub qhov los ntawm qhov tsis tso roj, tab sis yooj yim ua rau lub qhov ntsaws cov kua nplaum ua kuab paug nto, tsis sib xws.Tus neeg siv khoom yog nquag siv vuam virtual thaum sivSMT tshuabrau mount (tshwj xeeb tshaj yog nyob rau hauv BGA).Yog li ntau tus neeg siv khoom tsis lees txais txoj hauv kev no.
II.Cua kub leveling ua ntej plug qhov txheej txheem
2.1 Cov duab hloov pauv yog nqa tawm tom qab ntsaws qhov, solidification thiab sib tsoo ntawm aluminium ntawv
Cov txheej txheem txheej txheem no nrog CNC drilling tshuab, drilling tawm mus ntsaws lub qhov txhuas ntawv, ua los ntawm kev tshuaj ntsuam, ntsaws qhov, xyuas kom meej tias lub qhov ntsaws ntsaws tag nrho lub qhov ntsaws, ntsaws lub qhov number case plug qhov number case, kuj muaj thermosetting number case, nws cov yam ntxwv yuav tsum yog hardness, resin shrinkage hloov yog me me, thiab lub qhov phab ntsa binding quab yuam yog zoo.Cov txheej txheem khiav yog raws li nram no: pretreatment → plug qhov → sib tsoo phaj → nraaj hloov → etching → phaj nto kuj welding
Los ntawm txoj kev no tuaj yeem lav qhov kev sib tw ntawm lub qhov ntsaws, cua kub theem yuav tsis muaj roj, sab ntawm lub qhov blasting tawm cov teeb meem zoo xws li roj, tab sis cov txheej txheem yuav tsum tau muab pov tseg thickening tooj liab, ua rau lub qhov no phab ntsa tooj liab thickness ntsib. cov neeg siv khoom tus qauv, yog li tag nrho lub rooj tsavxwm siab thov rau tooj liab plating, thiab tseem muaj qhov yuav tsum tau ua ntawm kev ua haujlwm ntawm lub tshuab sib tsoo, kom ntseeg tau tias cov resin ntawm cov tooj liab kom huv si tshem tawm, xws li tooj liab nto huv si thiab tsis muaj kab mob. .Ntau lub PCB cov nroj tsuag tsis muaj cov txheej txheem ib zaug ntawm cov tooj liab thickening, thiab kev ua haujlwm ntawm cov khoom siv tsis yog raws li qhov yuav tsum tau ua, ua rau cov txheej txheem no tsis siv hauv cov nroj tsuag PCB.
2.2 Thaiv vuam ntawm lub vijtsam luam ntawv board nto ncaj qha tom qab ntsaws qhov ntawm cov ntawv txhuas
Cov txheej txheem txheej txheem no siv NUMERICAL tswj lub tshuab drilling, laum tawm cov ntawv txhuas los ntsaws lub qhov, ua rau hauv ib qho screen version, ntsia rau ntawm lub vijtsam luam ntawv tshuab ntsaws qhov, tom qab ua tiav qhov ntsaws qhov chaw nres tsheb yuav tsum tsis pub tshaj 30 feeb, nrog 36T npo. tshuaj ntsuam ncaj qha luam ntawv board nto tiv thaiv vuam, txheej txheem txheej txheem yog: pretreatment - ntsaws qhov - npo luam ntawv - ua ntej ci - raug - kev loj hlob - kho
Nrog rau cov txheej txheem no tuaj yeem ua kom ntseeg tau tias qhov conduction qhov npog roj yog qhov zoo, ntsaws lub qhov tiaj, cov xim xim ntub dej zoo ib yam, cua kub leveling tuaj yeem xyuas kom meej tias qhov conduction qhov tsis yog tin, tin hlaws tsis muab zais rau hauv lub qhov, tab sis yooj yim los ua. tus number case ncoo nyob rau hauv lub qhov tom qab kho, ua rau tsis zoo solderability;Tom qab cua kub leveling, ntug ntawm cov npuas los ntawm lub qhov thiab tee roj.Nws yog ib qho nyuaj rau siv cov txheej txheem no rau kev tswj ntau lawm, thiab nws yog ib qho tsim nyog rau cov txheej txheem engineers los txais yuav cov txheej txheem tshwj xeeb thiab tsis ua kom ntseeg tau qhov zoo ntawm lub qhov ntsaws.
2.3 Aluminium plug qhov, kev loj hlob, precuring, sib tsoo phaj nto vuam.
Nrog CNC drilling tshuab, drilling cov ntawv txhuas yuav tsum tau ntsaws qhov, ua rau hauv ib qho screen, ntsia rau ntawm lub tshuab luam ntawv hloov chaw ntsaws qhov, ntsaws lub qhov yuav tsum tau puv, ob sab ntawm qhov protruding zoo dua, thiab tom qab ntawd tom qab kho, sib tsoo phaj nto. kev kho mob, txheej txheem yog: pretreatment - plug qhov ib tug ua ntej ziab - tsim - pre-curing - nto welding
Txij li thaum plug qhov curing nyob rau hauv cov txheej txheem no tuaj yeem xyuas kom meej tias cov roj tsis poob los yog tawg hauv lub qhov tom qab HAL, tab sis tin hlaws muab zais rau hauv lub qhov thiab tin ntawm lub qhov los ntawm qhov tom qab HAL tsis tuaj yeem daws tau tag nrho, yog li ntau tus neeg siv khoom tsis lees txais.
2.4 Thaiv vuam thiab lub qhov ntsaws yog ua tiav tib lub sijhawm.
Txoj kev no siv 36T (43T) npo, ntsia rau ntawm lub tshuab luam ntawv, siv lub ncoo lossis ntsia thawv txaj, hauv kev ua tiav ntawm lub rooj tsavxwm tib lub sijhawm, tag nrho los ntawm lub qhov ntsaws, cov txheej txheem yog: pretreatment - screen printing - ua ntej - ziab - raug - kev loj hlob - kho.
Lub sijhawm txheej txheem yog luv luv, kev siv cov cuab yeej siv siab, tuaj yeem lav tom qab lub qhov tawm cov roj, cov cua kub theem qhia lub qhov tsis nyob ntawm lub tin, tab sis vim yog siv cov ntawv luam tawm los ntsaws lub qhov, hauv lub qhov nco nrog huab cua ntau, thaum curing, huab cua inflation, kom tawg los ntawm kev tiv thaiv vuam membrane, muaj qhov, tsis sib xws, cua kub leveling yuav coj lub qhov yog me me ntawm tin.
Post lub sij hawm: Nov-16-2021