Thaum siv PCBs, nws yog qhov ua tau kom ntsib PCB dabtsi yog khoov, uas tuaj yeem ua rau cov Circuition Board rau malfulction thiab txawm tias raug puas tsuaj rau cov khoom siv.
Vim li cas rau kev siv tus kab mob PCB
(1) Kev Siv Neeg Kho Tshuab
Ib qho ntawm cov laj thawj rau PCB dabtsi yog vim yog cov rog kho tshuab, xws li lwm yam sab nraud kev thauj mus los lossis teeb tsa yooj yim ua rau cov Circuit Court Bend.
(2) qhov kub ntau
Lub thermal expansion thiab contraction coefficient ntawm cov khoom siv hluav taws xob hluav taws xob muaj ntau yam kub, tshwj xeeb yog ua rau muaj kev cuam tshuam ntau dua thiab ua rau PCB deformation.
(3) Cov av noo
Circuit Court boards yog rhiab rau cov av noo. Thaum ib puag ncig cov av noo siab dhau, kev coj ua thiab rwb thaiv tsev kev ua tau zoo ntawm Circuit Court Board yuav cuam tshuam, ua rau deformation Board.
Kev daws rau cov xwm txheej sib txawv
(1) VUAM Yuam Kev Ntawm Cov Hluav Taws Xob Hluav Taws Xob
Thaum cerreasre tshwm sim ze rau soldering taw tes ntawm Circuit Courruit Board, nws yuav tshwm sim los ntawm soldering ntawm cov hluav taws xob sib xyaw. Txoj kev daws teeb meem yog tshuaj xyuas yog tias muaj cov tub sab tsis yog, tshwj xeeb yog cov semiconductor cov khoom siv yog qhov tseeb. Yog tias pawg tswj hwm khoov yog tshwm sim los ntawm kev sib ntaus sib tua tsis zoo, cov sib koom sib luag yuav tsum tau ua kom rov qab ua lawv cov duab. Yog tias lub vijtsam vuam raug puas, nws yuav tsum tau muab rov qab lossis hloov nrog cov khoom siv tshiab.
(2) PCB deformation tshwm sim los ntawm kev siv khoom siv
Thaum tus PCB ingergoes tseem ceeb deformation, nws yog ib qho tsim nyog xav tau rov qab mus rau nws txoj haujlwm qub thiab coj los saib xyuas kom paub qhov xwm txheej deformation. Cov xov xwm sib raug hluav taws xob txoj kev yuav tsum tau ua. Thaum cov neeg tsav nkoj Circuit Court cais los yog tooj liab ntawv ntog tawm, nws yog qhov tsim nyog kom rov ua cov duab kos, tooj liab ntawv ci, thiab cov khoom siv semiconductor.
PCB Distortion los ntawm kub cuam tshuam
Thaum muaj kev siv tus nqi PCB pom tias muaj qhov kub thiab txias, nws yuav tsis kam lees kho qhov kub thiab rhuav tshem cov kev tswj hwm hluav taws xob vim qhov sib txawv ntawm cov nqi hluav taws xob. Yog tias PCB nthuav dav vim qhov kub thiab txias, cov thawj coj tuaj yeem txias thiab ntxiv dag zog yuav ua rau tshem tawm sab hauv kev ntxhov siab.
PCB cuam tshuam los ntawm kev ya raws, ua rau deformation ntawm Circuit Court Board
Thaum lub Circuit Court board deforms vim tias noo noo, nws yuav tsum muab tso rau hauv qhov kev cuam tshuam qis (qis aval) cais ib puag ncig; Yog tias preheatre nyob rau hauv Circuit Courruit Board yog puas ntsoog, nws yuav tsum tau muab tshem tawm lossis lub preheatre tshiab yuav tsum tau nruab.
Yuav ua li cas tiv thaiv PCB dabtsi yog
(1) Xaiv cov ntaub ntawv raw zoo.
Zoo pcb subtrates muaj ntau dua hardness thiab ruaj khov, uas tuaj yeem ua tau zoo dua rau cov rog sab nraud.
(2) Mob siab rau kev tiv thaiv thaum lub sijhawm thauj mus los.
Thaum lub sijhawm thauj mus los, nws yog ib qho tsim nyog yuav tsum zam cov xwm txheej xws li kub, av noo, thiab kev co uas yuav ua rau cov Circuit Board kom khoov. Nws raug nquahu kom xaiv pcb Circuit Court boards uas tau ntim khoom thiab ua tau raws li cov specifications.
(3) Ua kev soj ntsuam zoo ntawm PCB ua ntej kev teeb tsa.
Tshawb xyuas qhov ua tau zoo thiab qib kev puas tsuaj ntawm Circuit Court Board kom ntseeg tau tias nws muaj kev ntseeg siab, yog li tsis txhob muaj kev puas tsuaj pcb lossis lwm yam tsis zoo.
(4) Ua tibzoo saib xyuas qhov kub lub caij thaum siv.
Tshwj xeeb tshaj yog thaum lub installation thiab siv cov txheej txheem semiconductor, saib xyuas yuav tsum tau them los tswj cov kub qhov kub. Tsis txhob distortion thiab deformation ntawm Circuit Courches los ntawm kev nthuav dav.