Kodi Silkscreen Pa PCB Ndi Chiyani?
Mukapanga kapena kuyitanitsa yanu matabwa ozungulira osindikizidwa , kodi muyenera kulipira zowonjezera pa silkscreen?Pali mafunso omwe muyenera kudziwa kuti silkscreen ndi chiyani?Ndipo mawonekedwe a silika ndi ofunikira bwanji mwanu Kupanga kwa PCB Board kapena Msonkhano wa Board Circuit Board ?Tsopano ABIS ikufotokozerani.
Kodi silkscreen ndi chiyani?
Silkscreen ndi wosanjikiza wa inki trace ntchito kuzindikira zigawo zikuluzikulu, malo mayeso, mbali za PCB, zizindikiro chenjezo, logos ndi zizindikiro etc. Silkscreen silkscreen nthawi zambiri ntchito pa chigawo chimodzi;Komabe kugwiritsa ntchito silkscreen pa solder mbali si zachilendo.Koma izi zikhoza kuonjezera mtengo.Kwenikweni chithunzithunzi chatsatanetsatane cha PCB cha silkscreen chingathandize onse opanga ndi mainjiniya kupeza ndikuzindikira zida zonse.
Inkiyo ndi inki ya epoxy yosakhala ya conductive.Inki yomwe imagwiritsidwa ntchito polemba izi ndi yopangidwa mwaluso.Mitundu yomwe timaiwona nthawi zambiri ndi yakuda, yoyera ndi yachikasu.Mapulogalamu a PCB amagwiritsanso ntchito ma fonti wamba mu zigawo za silkscreen koma mutha kusankhanso mafonti ena padongosolo.Kuti muwonetsetse silika wachikhalidwe mumafunika chophimba cha poliyesitala chotambasulidwa pamafelemu a aluminiyamu, chojambulira zithunzi za laser, makina opopera mankhwala ndi ma uvuni ochiritsira.
Kodi silkscreen idzakhudza chiyani?
Viscosity: Viscosity imatanthawuza kusuntha kwachibale pakati pa zigawo zamadzimadzi zoyandikana pamene madzi akuyenda, ndiye kuti kusagwirizana kudzapangidwa pakati pa zigawo ziwiri zamadzimadzi;unit: Pascal seconds (pa.s).
Kuuma: Kuuma kwa inki pambuyo pophika kale ndi 2B, kuuma kwa inki pambuyo powonekera ndi 2H, ndipo kuuma kwa inki pambuyo pophika ndi 6H.Kulimba kwa pensulo. Thixotropic: inkiyi ndi gelatinous ikaima, koma viscosity imasintha ikakhudza, yomwe imatchedwanso thixotropic, anti-sagging;ndi katundu wakuthupi wamadzimadzi, ndiko kuti, mu mkhalidwe wosonkhezera Kukhuthala kwake madontho, ndipo mwamsanga akuchira makhalidwe ake oyambirira mamasukidwe akayendedwe ataloledwa kuima.Kupyolera mu kusonkhezera, zotsatira za thixotropy zimakhala kwa nthawi yaitali, zokwanira kumanganso mkati mwake.Kuti tikwaniritse zotsatira zapamwamba zosindikizira chophimba, thixotropy wa inki ndi wofunika kwambiri.Makamaka pochita squeegee, inki imagwedezeka kuti ikhale yamadzimadzi.Izi zimathandizira kuthamanga kwa inki kudutsa mauna, ndikulimbikitsa kulumikizana kwa yunifolomu ya inki yolekanitsidwa ndi mauna.Pamene squeegee imasiya kusuntha, inkiyo imabwerera kumalo osasunthika, ndipo kukhuthala kwake kumabwereranso ku deta yoyambirira yofunikira. Dry film: Kapangidwe ka filimu yowuma:
Dry film ili ndi magawo atatu ndi zosakaniza:
Kanema wothandizira (filimu ya polyester, Polyester)
Photo-resist Dry Film
Filimu yophimba (filimu ya polyethylene, Polyethylene)
Zosakaniza zazikulu
① Binder binder (wopanga filimu),
②Photo-polymerization monomer Monomer,
③ Woyambitsa zithunzi,
④Pulasitiki,
⑤Adhesion Promoter,
⑥ Thermal polymerization inhibitor,
⑦ utoto wa pigment,
⑧ zosungunulira
Mitundu ya filimu yowuma imagawidwa m'magulu atatu molingana ndi chitukuko cha filimu yowuma ndi njira zochotsera: filimu yosungunuka yosungunuka, filimu yowuma yosungunuka ndi madzi ndi filimu yowuma yowuma;malinga ndi cholinga cha filimu youma, imagawidwa kukhala: kukana filimu yowuma, filimu yowuma yophimba ndi filimu ya Solder chigoba youma.
Sensitivity liwiro: amatanthauza kuchuluka kwa mphamvu kuwala chofunika photoresist kuti polymerize photoresist kupanga polima ndi kukana zina kukana pansi pa kuwala kwa ultraviolet kuwala, pansi pa chikhalidwe chokhazikika kuwala gwero mwamphamvu ndi mtunda wa nyali , Kukhudzika liwiro ndi kuwonetseredwa ngati kutalika kwa nthawi yowonekera, nthawi yochepa yowonetsera imatanthauza kuthamanga kwachangu.
Kusamvana: kumatanthauza kuchuluka kwa mizere (kapena masitayilo) omwe amatha kupangidwa ndi kukana filimu youma pamtunda wa 1mm.Kusamvana kungathenso kuwonetsedwa ndi kukula kwake kwa mizere (kapena masitayilo).
Net ulusi:
Net density:
Nambala ya T: imatanthawuza kuchuluka kwa ma meshes mkati mwa 1 cm kutalika.
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