Vim Li Cas Rau Cov Txiag Rau Circuit Board Blistering?
Nov 12, 2019
Thaum lub sijhawm txheej txheem ntau lawm, yuav muaj blistering ntawm pawg tswj hwm Circuit Court vim ntau yam. Yog li dab tsi yog qhov tseeb vim li cas rau qhov no?
Ua Ntej. Tsis zoo tooj liab txhuam phaj:
Kev kub siab dhau ntawm lub hauv ntej tooj liab sib tsoo phaj ua rau deformation ntawm orifice, txhuam txhuam cov tooj liab ntawm lub orifice, thiab txawm tias xau lub hauv paus cov khoom. Qhov no yuav ua rau paug ntawm orifice thaum tab tom ua cov txheej txheem xws li electroplating tin txau thiab soldering. Cov phaj tsis ua rau cov xau tawg, tab sis ib daim txhuam hnyav dhau ntawm daim phaj yuav ua rau muaj kev cuam tshuam ntawm tooj liab ntawm orifice. Yog li no, thaum lub sij hawm micro-etching thiab roughening txheej txheem, cov ntawv ci tooj liab yog yuav ua rau muaj kev kub ntxhov ntau dhau, thiab tseem yuav muaj qee yam tsis zoo. Nraim kev phom sij; yog li ntawd, kev saib xyuas yuav tsum tau them nyiaj rau kev ntxiv dag zog rau kev tswj hwm ntawm txhuam phaj ua tiav. Cov txheej txheem cov txheej txheem ntawm daim phaj txhuam tuaj yeem hloov kho kom zoo rau qhov zoo tshaj plaws los ntawm kev coj khaub ncaws caws pliav thiab kuaj cov zaj duab xis dej.
Thib ob, qhov teeb meem ntawm kev ntxuav khoom seem
Rau qee qhov ua kom nyias nyias (feem ntau qis dua 0.8 hli), vim tias cov substrate tsis zoo hauv kev nruj, nws tsis tsim nyog yuav tsum siv txhuam phaj txhuam txhuam lub phaj. Nws tuaj yeem tsis muaj qhov cuam tshuam ntawm kev tiv thaiv txheej txheej tshwj xeeb kho kom tiv thaiv kom tsis txhob oxidation ntawm tooj liab nyob rau saum npoo ntawm cov txheej thaum lub sijhawm ua khoom siv thiab ua cov txheej txheem ntawm cov substrate. Txawm hais tias txheej no yuag dua thiab daim txhuam xim yooj yim rau kev tshem tawm, nws yog qhov nyuaj rau siv tshuaj kho. Nws yog ib qho tseem ceeb uas yuav tsum tau them nyiaj rau kev tswj hwm kom tsis txhob ua qhov teeb meem ntawm lub blistering nyob rau saum npoo los ntawm qhov kev sib txuas tsis zoo ntawm lub zog ntawm cov ntawv ci tooj liab thiab cov tooj liab tshuaj; qhov teeb meem zoo no tseem yuav ua rau blackening thiab browning tsis ua hauj lwm thaum txheej hauv sab hauv dub. , Xim tsis sib xws, xim av hauv zos xim av tsis zoo.
Thib peb, lub rooj tsavxwm nto yog oxidized thaum lub sijhawm txheej txheem ntau lawm
Yog hais tias lub npov tooj liab tsim tawm yog oxidized rau saum huab cua, tsis tas yuav tsis muaj tooj liab nyob hauv lub qhov, qhov saum npoo ntawm cov phaj kuj yuav ntxhib, tab sis nws kuj yuav ua rau lub ntsej muag ntawm cov phaj yuav tawm tuaj; yog tias tooj liab phaj tso rau hauv cov kua qaub ntev ntev, qhov saum npoo ntawm cov phaj kuj tseem yuav oxidized, Qhov zaj duab xis oxide no nyuaj rau kev tshem tawm; yog li ntawd, cov phaj tooj liab yuav tsum tau ua kom tuab raws sijhawm thaum lub sijhawm ua khoom siv, thiab nws yuav tsum tsis txhob cia ntev heev. Feem ntau, tooj liab plating yuav tsum tau ua kom tuab li ntawm 12 teev ntawm qhov tseeb.