Hauv PCBA ua cov txheej txheem, yuav luag txhua cov txheej txheem yuav ua rau muaj qee qib ntawm kev ua qias tuaj rau PCB. Piv txwv li, lub theem pib ua rau oxidation ntawm PCB board thiab cov khoom siv hluav taws xob yuav muaj kuab paug los ntawm tus neeg teb xov tooj ntiv tes lossis cov theem uas yuav ua rau muaj kuab paug rau PCB. Nws yuav muaj paug los ntawm hmoov av lossis tin plua plav. Qhov muaj ntawm cov kuab paug no yuav tsis tsuas yog cuam tshuam rau cov tsos ntawm PCBa, tab sis kuj tseem muaj qhov cuam tshuam tsis zoo rau kev ua haujlwm ntawm PCBa. Yog li ntawd, tu PCBA yuav yog qhov tseem ceeb heev.
PCBA cov kuab paug feem ntau yog suav nrog cov pa phem polar, tsis muaj-polar pollollants thiab particle kuab paug. Cov pa roj polar yog cov oxium feem ntau yog cov oxides ntawm cov hluav taws xob thiab PCB, activator seem hauv flux, thiab tus neeg teb xov tooj tawm hws. , ntiv tes ntiv tes thiab cov khoom seem ntawm cov pa paug los, thiab lwm yam. Hom pins tivthaiv Nws tseem yuav ua rau delamination ntawm PCBA thiab cov xim ua haujlwm. Tsis-polig kuab paug yog feem ntau pom hauv fluxes. Rosin cov seem, cov khoom seem zoo, raws li cov neeg tsav tsheb ntiv tes, thiab kev ntseeg tau cov pa hauv PCBA, thiab tseem yuav txo cov kev ua paug ntawm cov khoom siv hluav taws xob; Piav cov kuab paug feem ntau yog hais txog hmoov av, solder residue, thiab cov iav cov fibers tsim thaum drilling. Lub xub ntiag ntawm cov kuab paug no tuaj yeem ua rau hluav taws xob tsis zoo hluav taws xob ntawm PCBA thiab ua rau muaj lub ntsej muag luv luv hauv PCBA.
