Dab tsi yog kub siv hauv kev tsim khoom PCB?

Cov lag luam thiab cov neeg siv khoom siv khoom siv hluav taws xob rau yuav luag txhua qhov ntawm lawv lub neej niaj hnub.Tsheb muaj puv luam tawm hauv Circuit Court board (PCB) rau txhua yam los ntawm teeb pom kev zoo thiab kev lom zem rau cov ntsuas uas tswj tus cwj pwm ntawm cov yam ntxwv tseem ceeb. Khoos phis tawj, ntsiav tshuaj, smartphones thiab txawm tias ntau yam khoom ua si uas menyuam nyiam siv cov khoom siv hluav taws xob thiab PCB rau lawv cov haujlwm nyuaj.

Niaj hnub no PCB tus tsim qauv ntsib teeb meem ntawm kev tsim cov laug cam txhim khu kev qha uas ua haujlwm nyuaj ntxiv thaum tswj tus nqi thiab txo qhov loj me. Qhov no yog qhov tshwj xeeb tshaj yog hauv xov tooj ntawm tes, drones thiab lwm yam kev siv, qhov hnyav yog qhov kev txiav txim siab tseem ceeb hauv PCB yam ntxwv.

Kub yog lub hauv paus tseem ceeb hauv PCB tsim, thiab khaws lub qhov muag ntawm “ntiv tes” ntawm PCB feem ntau qhia, suav nrog cov hlau ua los ntawm kub. Cov ntiv tes no feem ntau yog hlau ntau thiab tuaj yeem suav nrog cov khoom siv nrog txheej txheej kub kawg, xws li tin, lead, cobalt lossis nickel. Cov kev sib cuag kub no yog qhov tseem ceeb rau kev ua haujlwm ntawm cov txiaj ntsig PCB, tsim kev sib txuas nrog cov khoom lag luam uas muaj pawg thawj coj.

Vim li cas kub?

Tus cwj pwm kub xim ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev tsim khoom PCB. Kub-plated ntug txuas txuas ua tiav qhov sib xws ua tiav rau daim ntawv thov uas ua rau hnav siab, xws li phaj ntxig rau ntug cov ntsiab lus. Cov tawv kub tawv tawv muaj qhov ruaj khov uas tiv taus hnav los ntawm qhov kev ua ub no no.

Los ntawm nws qhov xwm txheej, kub zoo haum rau daim ntawv thov hluav taws xob:

Nws yog ib qho yooj yim los tsim thiab ua haujlwm ntawm cov khoom sib txuas, cov xov hlau thiab kev sib txuas lus sib txuas

Gold conducts electricity very efficiently (an obvious requirement for PCB applications)

Nws tuaj yeem nqa tus nqi me me ntawm qhov tam sim no, uas yog qhov tseem ceeb rau cov khoom siv hluav taws xob niaj hnub no.

Lwm cov hlau tuaj yeem sib xyaw nrog kub, xws li npib tsib xee lossis cobalt

Nws tsis hloov xim lossis xeb, ua rau nws yog qhov nruab nrab kev sib txuas zoo

Kev yaj thiab rov ua dua kub yog txheej txheem yooj yim

Tsuas yog nyiaj thiab tooj liab muab cov hluav taws xob ua hluav taws xob ntau dua, tab sis txhua tus muaj feem cuam tshuam rau xeb, tsim kev tiv thaiv tam sim no

Txawm tias daim ntawv thov kub me me muab kev ntseeg tau ruaj khov thiab muaj kev tiv thaiv tsawg

Kev sib txuas kub tuaj yeem tiv taus qhov kub thiab txias

Thickness variation NIS tuaj yeem siv los ua kom tau raws li qhov xav tau ntawm cov ntawv thov tshwj xeeb

Yuav luag txhua lub tshuab hluav taws xob muaj qee qib ntawm kub, suav nrog TVS, smartphones, khoos phis tawj, GPS khoom siv, thiab txawm tias siv thev naus laus zis los siv. Cov khoos phis tawj yog daim ntawv thov ntuj rau PCBS uas muaj cov kub thiab lwm yam ntsiab lus kub, vim tias xav tau kev ntseeg siab, kev xa xov nrawm ntawm cov cim digital uas zoo dua rau kub dua li lwm yam hlau.

Kub yog qhov tsis sib xws rau daim ntawv thov suav nrog qhov hluav taws xob qis thiab qhov xav tau tiv thaiv qis, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau PCB kev sib cuag thiab lwm yam kev siv hluav taws xob. Kev siv cov kub hauv cov cuab yeej siv hluav taws xob tam sim no deb tshaj qhov siv cov hlau muaj nqi hauv cov hniav nyiaj hniav kub.

Lwm qhov txiaj ntsig kub tau ua rau thev naus laus zis yog kev lag luam aerospace. Vim tias lub neej muaj kev cia siab thiab ntseeg tau ntawm kev sib txuas kub thiab PCBS koom ua ke rau hauv lub dav hlau thiab lub hnub qub, kub yog qhov kev xaiv ib txwm rau cov khoom tseem ceeb.

Lwm yam teeb meem xav tau kev saib xyuas hauv PCB

Tau kawg, muaj qhov tsis zoo rau siv kub hauv PCBS:

Nqe – Kub yog cov hlau muaj txiaj ntsig nrog cov peev txheej txwv, ua rau nws yog cov khoom siv kim hauv ntau lab ntawm cov khoom siv hluav taws xob.

Cov peev txheej poob – ib qho piv txwv yog kev siv kub hauv cov khoom siv niaj hnub xws li cov xov tooj. Feem ntau lub xov tooj ntawm tes tsis tau rov siv dua, thiab tsis saib xyuas pov tseg tuaj yeem poob qhov nyiaj me me mus tas li. Txawm hais tias tus nqi me me, tus nqi ntawm cov khoom siv pov tseg yog loj thiab tuaj yeem tsim cov nyiaj kub uas tsis tau siv ntau.

Kev pleev xim rau tus kheej tuaj yeem ua rau hnav thiab pleev xim hauv qhov rov ua dua lossis siab ua kom siab/zawv zawg. Qhov no ua rau nws muaj txiaj ntsig tshaj plaws los siv cov ntaub ntawv nyuaj rau daim ntawv thov ntawm cov substrates sib xws. Lwm qhov kev txiav txim siab rau PCB siv yog sib txuas cov kub nrog lwm cov hlau, xws li npib tsib xee lossis cobalt, los tsim cov hlau sib xyaw hu ua “tawv kub”.

Lub Koom Haum Saib Xyuas Ib puag ncig Asmeskas (EPA) tshaj tawm tias e-pov tseg tau loj hlob sai dua yuav luag txhua yam khoom pov tseg. Qhov no suav nrog tsis tsuas yog poob ntawm kub, tab sis kuj tseem muaj lwm yam hlau muaj txiaj ntsig thiab tej zaum muaj tshuaj lom.

Cov tuam txhab tsim khoom PCB yuav tsum ua tib zoo ntsuas qhov siv cov kub hauv PCB kev tsim khoom: siv ib txheej hlau ntau dhau tuaj yeem ua rau puas tsuaj lossis ua rau pawg tswj hwm tsis ruaj khov. Kev siv cov tuab ntxiv ua pov tseg thiab kim rau kev tsim khoom.

Tam sim no, cov tuam txhab tsim khoom PCB muaj cov kev xaiv txwv lossis lwm txoj hauv kev kom ua tau raws li lub peev xwm thiab qhov muaj peev xwm ntawm cov khoom kub lossis tooj liab. Txawm tias nws muaj txiaj ntsig zoo, cov hlau zoo nkauj no yog qhov tsis ntseeg qhov khoom siv rau kev tsim PCB.