Iyini i-Silkscreen ku-PCB?
Lapho ukuklama noma oda yakho amabhodi wesifunda aphrintiwe , ingabe udinga ukukhokha okwengeziwe ngesikrini sikasilika?Kukhona imibuzo odinga ukuyazi ukuthi yini isikrini sikasilika?Futhi ukuthi isikrini sikasilika sibaluleke kangakanani kweyakho Ukwenziwa kwebhodi le-PCB noma Umhlangano Webhodi Lesifunda Ephrintiwe ?Manje i-ABIS izokuchazela.
Yini isikrini sikasilika?
Isikrini sikasilika siwungqimba lwemikhondo kayinki esetshenziselwa ukuhlonza izingxenye, amaphuzu okuhlola, izingxenye ze-PCB, izimpawu eziyisixwayiso, amalogo namamaki njll. Lesi sikrini sikasilika ngokuvamile sisetshenziswa ohlangothini lwengxenye;Nokho ukusebenzisa i-silkscreen ohlangothini lwe-solder nakho akuvamile.Kodwa lokhu kungase kwenyuse izindleko.Empeleni isikrini sikasilika se-PCB esinemininingwane singasiza kokubili umenzi kanye nonjiniyela ukuthola nokukhomba zonke izingxenye.
Uyinki uyinki we-epoxy ongaconductive.Uyinki osetshenziselwa lezi zimpawu wakhiwe kakhulu.Imibala ejwayelekile esivame ukuyibona imnyama, imhlophe nephuzi.Isofthiwe ye-PCB iphinda isebenzisa amafonti ajwayelekile ezendlalelo zesikrini sikasilika kodwa ungakhetha namanye amafonti ohlelweni futhi.Ukuhlola usilika okuvamile udinga isikrini se-polyester eselulwe kumafreyimu e-aluminium, i-laser photo plotter, umthuthukisi wesifutho namahhavini okwelapha.
Yini ezothinta isikrini sikasilika?
I-Viscosity: I-Viscosity ibhekisela ekunyakazeni okuhlobene phakathi kwezingqimba zoketshezi eziseduze lapho uketshezi lugeleza, khona-ke ukumelana nokungqubuzana kuzokwenziwa phakathi kwezingqimba ezimbili zoketshezi;iyunithi: Pascal imizuzwana (pa.s).
Ukuqina: Ukuqina kukayinki ngemva kokubhaka ngaphambilini kungu-2B, ubulukhuni bukayinki ngemva kokuchayeka buyi-2H, futhi ukuqina kukayinki ngemva kokubhaka kungu-6H.Ukuqina kwepensela. Thixotropic: inki i-gelatinous uma imile, kodwa i-viscosity iyashintsha lapho ithintwa, eyaziwa nangokuthi i-thixotropic, i-anti-sagging;iyimpahla engokoqobo yoketshezi, okungukuthi, esimweni sokunyakazisa I-viscosity Yayo yehla, futhi ibuyisela ngokushesha izici zayo zokuqala ze-viscosity ngemva kokuvunyelwa ukuma.Ngokushukumisa, umphumela we-thixotropy uhlala isikhathi eside, okwanele ukwakha kabusha isakhiwo sangaphakathi.Ukuze uthole imiphumela yekhwalithi ephezulu yokuphrinta isikrini, i-thixotropy ye-inki ibaluleke kakhulu.Ikakhulukazi uma kwenziwa i-squeegee, inki iyanyakaziswa ukuze ifakwe uketshezi.Lo mphumela usheshisa ijubane likayinki elidlula kunemeshi, futhi likhuthaza ukuxhuma okufanayo kweyinki ehlukaniswe yinetha.Uma i-squeegee iyeka ukunyakaza, uyinki ubuyela esimweni esimile, futhi i-viscosity yayo ibuyela ngokushesha kudatha edingekayo yasekuqaleni. Ifilimu eyomile: Isakhiwo sefilimu esomile:
Ifilimu eyomile iqukethe izingxenye ezintathu kanye nezithako:
Ifilimu yokusekela (ifilimu ye-polyester, i-Polyester)
Ifilimu Eyomile Yokumelana nesithombe
Ifilimu yekhava (ifilimu ye-polyethylene, i-Polyethylene)
Izithako eziyinhloko
①I-binder binder (i-resin eyenza ifilimu),
②Photo-polymerization monomer monomer,
③Isiqalisi sesithombe,
④I-Plasticizer,
⑤Iphromotha yokunamathela,
⑥I-Thermal polymerization inhibitor,
⑦ Idayi Ye-Pigment,
⑧ i-solvent
Izinhlobo zefilimu ezomile zihlukaniswe ngezigaba ezintathu ngokusho kokuthuthukiswa kwefilimu eyomile nezindlela zokususa: ifilimu eyomile esekelwe ku-solvent, ifilimu eyomile encibilikayo emanzini kanye nefilimu eyomile ecwecwe;ngokwenhloso yefilimu eyomile, ihlukaniswe yaba: ukumelana nefilimu eyomile, ifilimu eyomile efihliwe kanye ne-Solder mask ifilimu eyomile.
Isivinini sokuzwela: sisho inani lamandla okukhanya adingekayo ukuze i-photoresist yenze i-polymerist i-photoresist yakhe i-polymer enokumelana okuthile ukumelana ngaphansi kwemisebe yokukhanya kwe-ultraviolet, ngaphansi kwesimo sokuqina komthombo wokukhanya okungaguquki kanye nebanga lesibani, Isivinini sokuzwela ivezwa njengobude besikhathi sokuchayeka, isikhathi sokuchayeka esifushane sisho isivinini sokuzwela esisheshayo.
Ukulungiswa: kubhekisela enanini lemigqa (noma ukuhlukana) okungakhiwa ukumelana nefilimu eyomile ebangeni elingu-1mm.Isixazululo singaphinda sivezwe ngosayizi ophelele wemigqa (noma isikhala).
Intambo yeNet:
Ukuminyana okuphelele:
Inombolo T: ibhekisela enanini lamameshi angaphakathi kobude obungu-1 cm.
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