MENENE CIWAN KWALLO?
Ƙwallon solder ɗaya ce mafi yawan lahani da ake samu lokacin amfani da fasahar hawan dutse zuwa allon da'ira da aka buga. Gaskiya da sunansu, ƙwallo ne na solder wanda ya rabu da babban jikin da ke samar da abubuwan haɗin haɗin haɗin gwiwa na fusing surface mount zuwa allon.
Solder balls kayan aiki ne, ma'ana idan sun yi birgima a kan allon da'irar da aka buga, za su iya haifar da gajeren wando na lantarki, da yin illa ga amincin allon da'ira.
Per daSaukewa: IPC-A-610, PCB mai fiye da 5 ƙwallayen solder (<= 0.13mm) a cikin 600mm² yana da lahani, saboda diamita mafi girma fiye da 0.13mm ya keta ƙaramin ƙa'idar izinin lantarki. Koyaya, kodayake waɗannan ƙa'idodin sun faɗi cewa ana iya barin ƙwallayen siyar idan sun makale a kan amintattu, babu ainihin hanyar sanin tabbas idan sun kasance.
YADDA AKE GYARA KWALLON SOLDER KAFIN FARUWA
Ana iya haifar da ƙwallayen siyar da abubuwa iri-iri, yin bincike na matsalar da ɗan ƙalubale. A wasu lokuta, suna iya zama gaba ɗaya bazuwar. Anan ga kaɗan daga cikin dalilan gama-gari na ƙwallayen solder suna samuwa a cikin tsarin taron PCB.
Danshi-Danshiya ƙara zama ɗaya daga cikin manyan batutuwa ga masana'antun hukumar da'ira a yau. Baya ga tasirin popcorn da fashewar ƙananan yara, yana iya haifar da ƙwallayen siyarwa saboda tserewa iska ko ruwa. Tabbatar cewa an bushe allunan da'irar da aka buga da kyau kafin aikace-aikacen solder, ko yin canje-canje don sarrafa zafi a cikin masana'anta.
Manna Solder– Matsaloli a cikin solder manna kanta iya taimaka wajen samuwar solder balling. Don haka, ba a ba da shawarar sake yin amfani da manna mai siyar ko ƙyale amfani da man siyar ya wuce ranar ƙarewar sa ba. Dole ne a adana manna mai siyar da kyau kuma a sarrafa shi daidai da ƙa'idodin masana'anta. Ruwa mai solder solder manna kuma iya taimakawa wajen wuce haddi danshi.
Tsarin Stencil– Baƙin solder na iya faruwa a lokacin da aka goge stencil ba daidai ba, ko lokacin da aka yi kuskuren buga stencil. Don haka, amincewa da waniƙwararrun ƙirƙirar allon da'ira bugukuma gidan taro zai iya taimaka maka ka guje wa waɗannan kurakurai.
Maimaita Bayanan Zazzabi– Mai sassauƙan ƙarfi yana buƙatar ƙafe a daidai adadin. Ahigh ramp-upko zafin zafin jiki na iya haifar da samuwar ƙwalwar solder. Don warware wannan, tabbatar da cewa hawan hawan ku bai wuce 1.5°C/sec daga matsakaicin zafin jiki zuwa 150°C.
CUTAR KWALLON SOYAYYA
Fesa a cikin tsarin iskasune hanya mafi kyau don cire gurɓatar ƙwallon solder. Waɗannan injunan suna amfani da bututun iska mai ƙarfi wanda ke cire ƙwallo da tilas daga saman allon da'irar da aka buga saboda tasirin tasirinsu.
Koyaya, wannan nau'in cirewa baya tasiri lokacin da tushen tushen mai tushe ya fito daga PCBs da ba daidai ba da al'amuran manna da aka riga aka sake fitarwa.
A sakamakon haka, yana da kyau a gano dalilin solder bukukuwa da wuri-wuri, saboda waɗannan matakai na iya yin tasiri mara kyau ga masana'anta da samarwa na PCB. Rigakafin yana ba da sakamako mafi kyau.
TSALLAKE RASHIN CIWON INC
A Imagineering, mun fahimci cewa kwarewa ita ce hanya mafi kyau don guje wa hiccups waɗanda ke zuwa tare da ƙirƙira da haɗin gwiwar PCB. Muna ba da mafi kyawun ingancin ajin da aka amince da aikin soja da na sararin samaniya, kuma muna ba da saurin juyawa kan samfuri da samarwa.
Shin kuna shirye don ganin bambancin Imani?Tuntube mu a yaudon samun ƙididdiga akan ƙirƙira na PCB da tafiyar matakai.