Chimodzi mwa zochitika zofala kwambiri za PCB inki mu kupanga kwenikweni ndi dontho la solder chigoba inki pa bolodi dera. Ndiye chifukwa cha inki pa bolodi la dera ndi chiyani? Momwe mungapewere PCB solder kukana inki deinking

Pali zifukwa zambiri zochotsera inki ya solder mask pa board board. Nthawi zambiri, pali zifukwa zitatu zotsatirazi. Pano pali kusanthula zifukwa zitatu aliyense, ndi mmene kuthetsa vuto kupewa solder chigoba kugwa.

1. Pamene bolodi PCB dera kusindikizidwa ndi solder kukana inki, chisanadze mankhwala si m’malo. Mwachitsanzo: Pali madontho, fumbi pamwamba pa bolodi la PCB, kapena madera ena ali oxidized.

Kuthetsa vutoli ndikosavuta. Mukungoyenera kuchitanso chithandizo choyambirira ndikuchibwerezanso. Yesetsani kuyeretsa madontho, zonyansa kapena oxide wosanjikiza pamwamba pa bolodi la dera la PCB kuti muwonetsetse kuti bolodi ladera limasindikizidwa pa solder kukana inki. Pamwamba ndi woyera.

2. N’zothekanso kuti chigoba cha solder chimagwa chifukwa cha ng’anjo, nthawi yophika ya bolodi yozungulira ndi yochepa kapena kutentha kwa kuphika sikokwanira. Chifukwa bolodi dera ayenera zophikidwa pa kutentha kwambiri pambuyo kusindikiza thermosetting solder chigoba kapena photosensitive solder chigoba, ndipo ngati kuphika kutentha kapena nthawi sikokwanira, mphamvu ya bolodi pamwamba inki adzakhala osakwanira, kotero kusindikizidwa dera bolodi Pambuyo processing wotsatira amaperekedwa kwa kasitomala, kasitomala amalandira bolodi ndiyeno amachita chigamba processing. Kutentha kwakukulu kwa ng’anjo ya malata panthawi yokonza chigamba kumapangitsa kuti chigoba cha solder board chigwe.

Kuti tithetse vutoli, choyamba tiyenera kuonetsetsa kuti kutentha kwa ng’anjo yophika kumagwirizana ndi kutentha kwenikweni kwa kuphika, kuti tipewe kuphika komwe kumafunidwa ndi inki chifukwa cha kutentha kwa ng’anjo. Aliyense solder chigoba inki ali zofunika zosiyanasiyana kuphika nthawi ndi kutentha, choncho yesetsani kuphika mogwirizana ndi zinthu chizindikiro anapatsidwa ndi wopanga inki.

3. Mavuto amtundu wa inki kapena inki yatha, zinthu za inki zopangidwa ndi wopanga aliyense wa PCB zidzakhala zosiyana. Nthawi zina, pofuna kulamulira ndalama, opanga bolodi gulu ayenera kugwiritsa ntchito wotchipa dera bolodi solder kukana inki chifukwa cha Kwa opanga dera bolodi, ngakhale solder chigoba inki nkhani gawo laling’ono kwambiri la mtengo kupanga, ngati ndalama ndi lalikulu, padzakhala kukhala osiyana kwambiri, choncho nthawi zina chifukwa cha mtengo kuganizira, mtengo solder chigoba inki amasankhidwa. The wotchipa solder kukana inki nthawi zina amavutika deinking chifukwa cha mavuto monga adhesion. Palinso mafakitale ang’onoang’ono a board board, inki yogulidwa sinagwiritsidwe ntchito kwa nthawi yayitali, ndipo magwiridwe antchito ambiri amachepetsedwa kwambiri, ndipo kutsika kwa inki kumatha kuchitika. Nthawi zambiri, tikulimbikitsidwa kugwiritsa ntchito inki ya solder pasanathe maola 24 mutatsegula tanki ndikusintha mafuta. Ngati ipitirira maola 24, ntchito ya inki idzachepetsedwa kwambiri.

Ngati zofuna za makasitomala a fakitale ya board board ndizokwera kwambiri, yesani kusankha inki yabwino ya solder. Kupatula apo, mtengo wa inki umachepera 3% ya mtengo wonse. Ngati mutaya kasitomala wokhazikika chifukwa cha vuto la inki, zidzakhala zambiri kuposa phindu. Chigoba cha solder cha ku Japan cha Sun ndi chigoba cha solder cha Taiwan Chuanyu ndichabwino kwambiri. Kumene, monga wachinyamata pseudo-okonda dziko, ndi bwino kugula Japanese solar kukana inki kuposa Taiwan Chuan Yu solder kukana inki. Iwo ali pafupifupi ofanana. Sizingakhale bwino kungosankha.

Konzani mavuto atatuwa. Nthawi zambiri, ma inki a ma solder samakhala ndi inki. Ngati ndi choncho, yesani kulumikizana ndi wogulitsa inki ndikukonza zoti katswiri azitsatira ndikuzithetsa.