Lokacin da wayar tagulla ta PCB ta faɗi, duk samfuran PCB za su yi jayayya cewa matsala ce ta laminate kuma tana buƙatar tsire-tsire masu samarwa don ɗaukar mummunan asara.Bisa ga shekaru da yawa na abokin ciniki korafe-korafe gwaninta, na gama gari dalilai na PCB jan karfe faduwa su ne kamar haka:
1,PCB factory tsari dalilai:
1), Rubutun Copper ya wuce gona da iri.
Bakin jan ƙarfe na lantarki da ake amfani da shi a kasuwa gabaɗaya galvanized ne mai gefe guda (wanda aka fi sani da ashing foil) da plating na jan ƙarfe mai gefe guda (wanda aka fi sani da jan foil).Kin amincewa da jan ƙarfe na gama gari shine gabaɗaya galvanized foil jan karfe sama da 70UM.Babu wani ƙin yarda da batch jan ƙarfe na ja da foil ɗin toka a ƙasa da 18um.Lokacin da tsarin kewayawa ya fi layin etching, idan ƙayyadaddun bayanan jan karfe ya canza kuma sigogin etching sun kasance ba su canzawa, lokacin zama na foil ɗin jan ƙarfe a cikin maganin etching zai yi tsayi da yawa.
Saboda zinc karfe ne mai aiki, lokacin da wayar tagulla akan PCB ta jiƙa a cikin maganin etching na dogon lokaci, zai haifar da lalata gefen layi mai wuce kima, yana haifar da cikakkiyar amsawar wasu layin bakin ciki mai goyan bayan tutiya yadudduka da rabuwa daga substrate, wato, wayar tagulla ta faɗi.
Wani yanayin kuma shine babu matsala tare da sigogin etching na PCB, amma wankewar ruwa da bushewa bayan etching ba su da kyau, wanda ya haifar da cewa wayar tagulla kuma tana kewaye da ragowar etching a saman bayan gida na PCB.Idan ba a daɗe ba a kula da shi, hakanan zai haifar da lalatawar waya ta jan ƙarfe fiye da kima da jefa tagulla.
Wannan yanayin gabaɗaya yana mai da hankali ne kan titin layi na sirara ko rigar yanayi.Irin wannan lahani zai bayyana akan duk PCB.Cire wayar tagulla don ganin kalar fuskar fuskarta tare da kashin tushe (watau abin da ake kira daɗaɗɗen saman) ya canza, wanda ya sha bamban da launin foil ɗin tagulla na yau da kullun.Abin da kuke gani shine asalin launin jan ƙarfe na Layer na ƙasa, kuma ƙarfin bawon tagulla a layin mai kauri shima al'ada ne.
2), karo na gida yana faruwa a cikin tsarin samar da PCB, kuma an raba waya ta jan karfe daga substrate ta ƙarfin injin waje.
Akwai matsala tare da matsayar wannan ƙarancin aikin, kuma wayar tagulla da ta faɗo za ta sami ɓarna a fili, ko tarkace ko alamun tasiri a hanya ɗaya.Cire wayar tagulla a ɓangaren mara kyau kuma duba gaɓoɓin murfin jan karfe.Ana iya ganin cewa launi na murfin murfin jan ƙarfe yana da al'ada, ba za a sami lalatawar gefe ba, kuma ƙarfin cirewar murfin tagulla na al'ada ne.
3), PCB zane zane ba shi da ma'ana.
Zana layukan sirara masu kauri mai kauri mai kauri kuma zai haifar da etching da wuce kima da jan ƙarfe.
2,Laminate dalilai:
A karkashin yanayi na al'ada, idan dai sashin zafin jiki mai zafi na laminate ya wuce minti 30, foil ɗin jan karfe da takardar da aka warke gabaɗaya an haɗa su gaba ɗaya, don haka latsa gabaɗaya ba zai shafi ƙarfin haɗin gwiwa tsakanin tagulla da tagulla ba. substrate a cikin laminate.Duk da haka, a cikin aiwatar da lamination da stacking, idan PP ya gurɓata ko kuma m surface na tagulla foil ya lalace, shi ma zai haifar da kasa bonding ƙarfi tsakanin jan karfe foil da substrate bayan lamination, haifar da matsayi sabawa (kawai ga manyan faranti). ko wayan jan karfe da ke fadowa a lokaci-lokaci, amma ba za a sami rashin daidaituwa ba a cikin ƙarfin bawon tagulla kusa da layi.
3, Laminate albarkatun kasa dalili:
1), Kamar yadda aka ambata a sama, talakawa electrolytic jan karfe tsare ne galvanized ko jan karfe plated kayayyakin na ulu tsare.Idan ganiya darajar ulu tsare ne mahaukaci a lokacin samarwa, ko shafi crystal rassan ne matalauta a lokacin galvanizing / jan karfe plating, sakamakon rashin isasshen kwasfa na jan karfe tsare kanta.Bayan an danna madaidaicin foil ɗin cikin PCB, wayar tagulla za ta faɗi ƙarƙashin tasirin ƙarfin waje a cikin toshe na masana'antar lantarki.Irin wannan jifa da tagulla ba shi da kyau.Lokacin da aka tube wayar tagulla, ba za a sami gurɓatawar gefe ba a kan tarkacen bangon tagulla (watau fuskar da aka haɗa tare da ma'auni), amma ƙarfin kwasfa na duka jakar tagulla zai yi rauni sosai.
2), Rashin daidaituwa tsakanin foil na jan karfe da guduro: don wasu laminates tare da kaddarorin musamman, kamar takardar HTG, saboda tsarin guduro daban-daban, wakili na warkewa da ake amfani da shi gabaɗaya guduro PN ne.Tsarin sarkar kwayoyin halitta na guduro abu ne mai sauƙi kuma matakin haɗin giciye yana da ƙasa yayin warkewa.An daure a yi amfani da foil na jan karfe tare da kololuwar musamman don dacewa da shi.Lokacin da foil ɗin jan ƙarfe da aka yi amfani da shi wajen samar da laminate bai dace da tsarin guduro ba, wanda ke haifar da ƙarancin ƙarfin kwasfa na foil ɗin ƙarfe da aka lulluɓe akan farantin, da kuma faɗuwar waya mara kyau lokacin sakawa.
Lokacin aikawa: Agusta-17-2021