1. Thaum ci loj loj polbs, siv kab rov tav rov tav. Nws raug nquahu tias qhov ntau ntawm ib pawg yuav tsum tsis pub tshaj 30 daim. Qhov cub yuav tsum tau qhib tsis pub dhau 10 feeb tom qab ci kom coj tawm pcb thiab nteg nws tiaj kom txias nws. Tom qab ci, nws yuav tsum tau nias. Anti-khoov fixtures. Loj loj polbs yuav tsis pom zoo kom ntsug ci, raws li lawv yooj yim khoov.
2. Thaum ci me me thiab nruab nrab ntawm lub cev, koj tuaj yeem siv cov tiaj ntaus. Qhov siab tshaj plaws ntawm ib pawg pom zoo kom tsis txhob tshaj 40 daim, lossis nws tuaj yeem yog ncaj, thiab tus lej tsis txwv. Koj yuav tsum qhib qhov cub thiab hle pcb tsis pub dhau 10 feeb ntawm ci. Cia nws txias, thiab nias lub anti-khoov jig tom qab ci.
Kev ceev faj thaum PCB ci
1. Lub ci kub yuav tsum tsis pub tshaj lub TG taw tes ntawm PCB, thiab cov kev cai rau kev ntsuas dav dav yuav tsum tsis pub tshaj 125 ° C. Nyob rau hauv thaum ntxov hnub, TG taw tes ntawm qee cov txhuas uas muaj pcbs yog tsawg, thiab tam sim no lub tg cov pcbs tsis muaj feem ntau yog tshaj 150 c.
2. Tus pcbed pcb yuav tsum tau siv kom sai li sai tau. Yog tias nws tsis raug siv, nws yuav tsum yog lub tshuab nqus tsev kom sai li sai tau. Yog tias raug muab tso rau hauv chav haujlwm ntev dhau, nws yuav tsum tau ci dua.
3. Nco ntsoov kom muab cua tshuab kom qhuav hauv qhov cub, txwv tsis pub cov pa yuav nyob hauv qhov cub thiab nce ntxiv nws cov txheeb ze, uas tsis zoo rau pcb dehumidification.
4. Los ntawm qhov pom ntawm qhov zoo, cov pcb tshiab tshiab siv tau siv, qhov zoo dua qhov zoo yuav yog. Txawm hais tias tus pcb tas sij hawm yog siv tom qab ci, tseem muaj qee qhov kev pheej hmoo zoo.
Cov lus pom zoo rau PCB ci
1. Nws raug nquahu kom siv qhov kub ntawm 105 ± 5 ℃ txhawm rau ntawm PCB. Vim hais tias cov dej npau npau yog 100 ℃, ntev npaum li nws tau tshaj nws lub boiling point, cov dej yuav ua kom sov. Vim tias PCB tsis muaj ntau cov roj av ntau dhau, nws tsis xav tau ntau dua qhov kub kom nce tus nqi ntawm nws cov vaporization.
Yog tias qhov ntsuas kub siab dhau lossis cov roj ua kom nrawm nrawm dhau, nws yuav yooj yim rau cov dej vapor kom nthuav sai sai, uas yog qhov tsis zoo rau qhov zoo. Tshwj xeeb tshaj yog rau cov laug cam thiab PCBs nrog faus qhov, 105 ° C yog nyob rau saum cov dej npau, thiab qhov kub yuav tsis muaj siab dhau. , Tuaj yeem rhuav tshem thiab txo qhov kev pheej hmoo ntawm oxidation. Ntxiv mus, lub peev xwm ntawm qhov cub tam sim no los tswj qhov kub tau txhim kho ntau dua ua ntej.
2. Seb pcb yuav tsum tau ci yog nyob ntawm seb nws ntim khoom yog Damp, uas yog, kom pom daim npav WIC (av noo Yog tias lub ntim yog qhov zoo, HIC tsis qhia tias kev ya raws yog qhov tseeb koj tuaj yeem mus online yam tsis muaj ci.
3. Nws raug nquahu kom siv "Upright" thiab spaced ci thaum pcb convection, thiab noo noo yog yooj yim dua los ci ntawm pcb. Txawm li cas los xij, rau cov lej loj, nws yuav tsim nyog los txiav txim siab seb puas yuav ua rau muaj khoov thiab deformation ntawm pawg thawj coj.
4. Tom qab tus PCB yog ci, nws raug nquahu kom tso nws rau hauv qhov chaw qhuav thiab cia nws kom txias sai. Nws yog qhov zoo dua rau nias lub "anti-khoov ntsuas fixture" nyob rau sab saum toj ntawm lub rooj tsavxwm, vim hais tias lub tuam txhab dav dav yooj yim nqus dej vapor los ntawm cov txheej txheem cua sov siab rau cov txheej txheem txias. Txawm li cas los xij, cov cua txias sai yuav ua rau phaj khoov, uas yuav tsum muaj nyiaj sib npaug.
Qhov tsis zoo ntawm PCB ci thiab yam uas yuav xav txog
1. Ci yuav ua kom nrawm dua cov oxidation ntawm PCB nplaim txheej, thiab qhov siab dua qhov kub, lub ntev dua.
2. Nws tsis pom zoo kom ci osp deg cov tsheb ciav hlau ntawm qhov kub thiab txias, vim osp zaj duab xis yuav ua yeeb yaj kiab los yog poob vim kub siab. Yog tias koj yuav tsum tau ci, nws raug nquahu kom ci ntawm qhov kub ntawm 105 ° C, tsis ntau tshaj 2 teev, thiab nws raug nquahu kom siv nws li ntawm 24 teev tom qab ci.
3. Ci yuav muaj kev cuam tshuam rau kev tsim IMC, tshwj xeeb tshaj yog rau cov khoom siv ua plating)
