Chii chinonzi Silkscreen paPCB?
Paunenge uchigadzira kana kuraira yako mapuranga edunhu akadhindwa , iwe unofanirwa kubhadhara yakawedzera kune silkscreen?Pane mimwe mibvunzo yaunoda kuziva chii silkscreen?Uye kuti yakakosha sei silkscreen mune yako PCB Board kugadzirwa kana Yakadhindwa Circuit Board Assembly ?Iye zvino ABIS ichakutsanangurira.
Chii chinonzi silkscreen?
Silkscreen ira ye inki traces inoshandiswa kuona zvikamu, bvunzo mapoinzi, zvikamu zvePCB, yambiro zviratidzo, logos uye mamakisi etc. Iyi silkscreen inowanzoiswa pachikamu chechikamu;zvisinei kushandisa silkscreen padivi solder zvakare haina kujairika.Asi izvi zvinogona kuwedzera mari.Chaizvoizvo yakatsanangurwa PCB silkscreen inogona kubatsira mugadziri uye mainjiniya kuwana uye kuona zvese zvikamu.
Iyo inki isiri-conductive epoxy inki.Ingi inoshandiswa pazvikwangwani izvi yakagadzirwa zvakanyanya.Mavara akajairika atinowanzo kuona ndeatema, machena uye yero.PCB software inoshandisawo akajairwa mafonti mumasikirini masikirini asi unogona kusarudza mamwe mafonti kubva kuhurongwa zvakare.Pachinyakare silika-screening unoda polyester sikirini yakatambanudzwa paaluminium mafuremu, laser photo plotter, spray developer uye kurapa oveni.
Chii chichabata silkscreen?
Viscosity: Viscosity inoreva kufamba kunoenderana pakati pematanho emvura ari padyo kana mvura ichiyerera, ipapo kupokana kunogadzirwa pakati pematanho maviri emvura;chikwata: Pascal masekondi (pa.s).
Kuoma: Kuoma kweinki mushure mekutanga kubika ndeye 2B, kuoma kweinki mushure mekuonekwa ndeye 2H, uye kuoma kweinki mushure mekubika kwemashure ndeye 6H.Kuoma kwepenzura. Thixotropic: iyo inki ndeyegelatinous kana yakamira, asi viscosity inoshanduka kana yakabatwa, inozivikanwawo sethixotropic, anti-sagging;iyo inzvimbo yemuviri yemvura, ndiko kuti, mumamiriro ekubvongodza madonhwe ayo eviscosity, uye inokurumidza kudzoreredza maitiro ayo ekutanga e viscosity mushure mekubvumidzwa kumira.Kuburikidza nekukurudzira, mhedzisiro yethixotropy inogara kwenguva yakareba, yakakwana kuvakazve chimiro chayo chemukati.Kuti uwane mhedzisiro yemhando yepamusoro yekudhinda skrini, iyo thixotropy yeinki yakakosha.Kunyanya pakuita kusvinwa, inki inobvongodzwa kuti iite liquefied.Iyi mhedzisiro inomhanyisa kumhanya kweinki ichipfuura nemu mesh, uye inosimudzira yunifomu yekubatanidza inki yakaparadzaniswa nemambure.Kamwe iyo squeegee inomira kufamba, iyo inki inodzokera kune static state, uye viscosity yayo inokurumidza kudzoka kune yekutanga data inodiwa. Dry film: Dry film chimiro:
Dry firimu rine zvikamu zvitatu uye zvigadzirwa:
Firimu rekutsigira (polyester firimu, Polyester)
Photo-resist Dry Film
Firimu rekuvhara (polyethylene firimu, Polyethylene)
Main ingredients
① Binder binder (firimu-kugadzira resin),
②Mufananidzo-polymerization monomer Monomer,
③Mugadziri wemifananidzo,
④Plasticiser,
⑤Adhesion Promoter,
⑥Thermal polymerization inhibitor,
⑦ Pigment Dhayi,
⑧ solvent
Mhando dzemafirimu dzakaoma dzakakamurwa muzvikamu zvitatu maererano nekugadzirwa kwefirimu yakaoma uye nzira dzokubvisa: solvent-based dry film, mvura-soluble yakaoma firimu uye peel-off yakaoma firimu;maererano nechinangwa chefirimu yakaoma, yakakamurwa kuva: ramba firimu yakaoma, masked yakaoma firimu uye Solder mask yakaoma firimu.
Sensitivity speed: inoreva huwandu hwesimba rechiedza rinodiwa kuti photoresist iite polymerize iyo photoresist kuti igadzire polima ine imwe tsigiro yekuramba pasi pekuvhenekera kwe ultraviolet mwenje, pasi pemamiriro eiyo yakagadziriswa mwenje sosi kusimba uye mwenje kureba, Sensitivity kumhanya ndiko. inoratidzwa sehurefu hwenguva yekuratidzwa, nguva pfupi yekuratidzwa inoreva kukurumidza kwekunzwa.
Resolution: inoreva nhamba yemitsara (kana spacing) inogona kuumbwa neyakaoma firimu kuramba mukati mechinhambwe che1mm.Kugadziriswa kunogonawo kuratidzwa nehukuru hwakakwana hwemitsara (kana kupatsanurana).
Net yarn:
Net density:
T nhamba: inoreva nhamba yemameshes mukati me1 cm kureba.
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