Daya daga cikin mafi yawan abubuwan da suka faru na PCB tawada a ainihin samarwa shine digo na tawada abin rufe fuska na solder akan allon kewayawa. To mene ne sanadin tawada a kan allo? Yadda ake guje wa PCB solder ƙin deinking tawada

Akwai dalilai da yawa na bawon tawada abin rufe fuska na solder akan allon da’ira. Gabaɗaya, akwai dalilai guda uku masu zuwa. Anan akwai nazarin dalilai guda uku ga kowa da kowa, da kuma yadda za a magance matsalar guje wa abin rufe fuska na solder.

1. Lokacin da PCB kewaye hukumar da aka buga da solder resist tawada, da pre-jiyya ba a wurin. Misali: Akwai tabo, ƙura a saman allon PCB, ko kuma wasu wuraren suna oxidized.

Magance wannan matsala shine mafi sauki. Kuna buƙatar sake yin kafin magani kuma sake sake yin shi. Yi ƙoƙarin tsaftace tabo, ƙazanta ko oxide Layer a saman allon da’irar PCB don tabbatar da cewa an buga allon da’ira akan tawada mai ƙin siyar. saman yana da tsabta.

2. Har ila yau, yana yiwuwa abin rufe fuska na solder ya fadi saboda tanda, lokacin yin burodi na allon kewayawa ya yi takaice ko kuma yawan zafin jiki bai isa ba. Domin da kewaye hukumar dole ne a gasa a wani babban zafin jiki bayan bugu da thermosetting solder mask ko photosensitive solder mask, kuma idan yin burodi zafin jiki ko lokaci bai isa ba, da ƙarfin da jirgin saman tawada zai zama kasa, don haka da buga kewaye hukumar Bayan Ana isar da aiki na gaba ga abokin ciniki, abokin ciniki yana karɓar allo sannan ya aiwatar da sarrafa facin. Yawan zafin jiki na tanderun gwangwani yayin sarrafa facin zai sa abin rufe fuska na allo ya faɗi.

Don magance wannan matsala, dole ne mu fara tabbatar da cewa zafin nuni na yin burodi na tanda ya dace da ainihin zafin burodi, don kauce wa yanayin yin burodin da tawada ke bukata saboda zafin tanda. Kowane tawada abin rufe fuska yana da buƙatu daban-daban don lokacin yin burodi da zafin jiki, don haka gwada yin gasa daidai da yanayin siga da masana’anta tawada suka bayar.

3. Matsalolin ingancin tawada ko tawada sun ƙare, samfuran tawada da kowane mai kera tawada na PCB ke samarwa zai bambanta da inganci. Wani lokaci, don sarrafa farashi, masana’antun da’ira suna buƙatar yin amfani da tawada mai arha mai arha saboda masana’antun da’irar, kodayake tawada abin rufe fuska yana da ɗan ƙaramin sashi na farashin samarwa, idan adadin ya yi girma, za a sami zama da yawa bambanci, don haka wani lokacin saboda farashin la’akari, mai rahusa solder mask tawada ake zaba. Mai arha mai siyar da tawada mai arha wani lokaci yana fama da deinking saboda matsaloli kamar mannewa. Har ila yau, akwai wasu ƙananan masana’antun da’ira, tawada da aka saya ba a daɗe da amfani da shi ba, kuma aikin da ake amfani da shi yana raguwa sosai, kuma raguwar tawada yana iya faruwa. Gabaɗaya magana, ana ba da shawarar yin amfani da tawada abin rufe fuska a cikin sa’o’i 24 bayan buɗe tanki da daidaita mai. Idan ya wuce awanni 24, aikin tawada zai ragu sosai.

Idan buƙatun abokin ciniki na masana’antar hukumar da’ira sun yi girma, gwada zaɓar tawada abin rufe fuska mai kyau. Bayan haka, farashin tawada ya kai ƙasa da kashi 3% na jimlar kuɗin. Idan ka rasa tsayayye abokin ciniki saboda matsalar tawada, zai fi riba. Mashin solder na Sun na Japan da abin rufe fuska na Taiwan Chuanyu suna da kyau sosai. Tabbas, a matsayina na matashi mai kishin kasa, ya fi Taiwan Chuan Yu siyan tawada mai juriya mai solar solar Japan. Su kusan iri daya ne. Ba zai fi kyau a zabi kawai ba.

Magance wadannan matsaloli guda uku. Gabaɗaya, tawada abin rufe fuska ba safai ake samun tawada ba. Idan haka ne, gwada tuntuɓar mai samar da tawada kuma shirya ma’aikacin fasaha don bibiya ya warware shi.