PCB multilayer compaction tsari ne na jeri. Wannan yana nufin cewa tushe na layering zai zama wani yanki na jan karfe tare da Layer na prepreg da aka shimfiɗa a saman. Adadin yadudduka na prepreg ya bambanta bisa ga buƙatun aiki. Bugu da ƙari, ana ajiye ainihin ciki a kan prepreg billet Layer sa'an nan kuma ƙara cika da prepreg billet Layer rufe da tagulla foil. Don haka ana yin laminate na PCB mai yawan Layer. Tari laminates iri ɗaya a saman juna. Bayan an ƙara foil na ƙarshe, an ƙirƙiri tari na ƙarshe, ana kiransa “littafi,” kuma kowane tari ana kiransa “babi.”
Lokacin da littafin ya ƙare, ana canja shi zuwa latsawa na ruwa. Ana dumama latsawar ruwa kuma tana amfani da matsi mai yawa da vacuum zuwa littafin. Ana kiran wannan tsari curing saboda yana hana hulɗar tsakanin laminates da juna kuma yana ba da damar resin prepreg don haɗawa tare da ainihin da tsare. Ana cire abubuwan da aka gyara sannan a sanyaya su a cikin dakin da zafin jiki don ba da damar guduro ya daidaita, don haka ana kammala kera na'urorin PCB masu yawa na jan karfe.
Bayan an yanke zanen kaya daban-daban bisa ga ƙayyadaddun girman, za a zaɓi nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan an yanke su gwargwadon girman takardar don samar da katako, kuma an haɗa katakon laminated a cikin sashin latsawa bisa ga jerin abubuwan da ake buƙata. . Tura sashin latsawa cikin injin laminating don latsawa da kafawa.
5 matakai na kula da zafin jiki
(a) Preheating mataki: zafin jiki daga dakin zafin jiki zuwa farkon zafin jiki na surface curing dauki, yayin da core Layer guduro ne mai tsanani, wani ɓangare na volatiles an saki, da kuma matsa lamba ne 1/3 to 1/2 na jimlar matsa lamba.
(b) Matakin rufewa: resin saman saman yana warkewa a ƙananan ƙimar amsawa. Babban guduro Layer yana da zafi iri ɗaya kuma yana narke, kuma madaidaicin layin guduro ya fara haɗawa da juna.
(c) mataki na dumama: daga farkon zafin jiki na curing zuwa matsakaicin zafin jiki da aka ƙayyade a lokacin latsawa, gudun kada ya kasance da sauri sosai, in ba haka ba saurin warkarwa na Layer Layer zai yi sauri sosai, kuma ba za a iya haɗa shi da kyau tare da shi ba. core Layer guduro, haifar da stratification ko fatattaka na ƙãre samfurin.
(d) Matsayin zafin jiki akai-akai: lokacin da zafin jiki ya kai ga mafi girman darajar don kula da matakin akai-akai, aikin wannan matakin shine tabbatar da cewa resin ɗin saman ya warke gabaɗaya, resin babban Layer ɗin yana da filastik iri ɗaya, kuma don tabbatar da narkewa. hade tsakanin yadudduka na kayan zanen gado, a ƙarƙashin aikin matsa lamba don sanya shi zama cikakke cikakke, sa'an nan kuma aikin da aka gama don cimma mafi kyawun ƙimar.
(e) Matakin sanyaya: Lokacin da guduro na tsakiyar saman Layer na slab ɗin ya warke gabaɗaya kuma ya haɗa shi tare da resin na ainihin Layer, ana iya sanyaya shi da sanyaya, kuma hanyar sanyaya shine a wuce ruwa mai sanyaya a cikin farantin zafi. na latsa, wanda kuma za'a iya sanyaya su ta halitta. Ya kamata a gudanar da wannan mataki a ƙarƙashin kulawa da ƙayyadadden matsa lamba, kuma ya kamata a kula da yanayin sanyi mai dacewa. Lokacin da zafin jiki na farantin ya faɗi ƙasa da zafin da ya dace, ana iya yin sakin matsa lamba.
Lokacin aikawa: Maris-07-2024
