Hwaro zvinhu zvedunhu bhodhi reiyo electro-acoustic PCB fekitori inongova nemhangura foil pamativi ese, uye yepakati ndiyo insulating layer, saka haifanire kuve conductive pakati peDouble mativi kana. multi-layer circuits yebhodhi redunhu?Mitsetse iri kumativi ose ingabatanidzwa sei kuitira kuti ikozvino ifambe zvakanaka? Pazasi, ndapota ona iyo electroacoustic PCB mugadziri kuongorora iyi yemashiripiti maitiro kwauri - kunyura kwemhangura (PTH). Kunyudzwa mhangura ndiyo chidimbu cheEletcroless Plating Copper, inozivikanwawo sePlated through Hole, yakapfupikiswa sePTH, inova autocatalytic redox reaction.Mushure mekunge maviri-layer kana akawanda-layer board adonhedzwa, iyo PTH process inoitwa. Basa rePTH: Pane iyo isiri-conductive gomba madziro substrate iyo yakadhirowa, yakatetepa yekemikari mhangura yakaiswa mumakemikari kuti ishande seiyo substrate yeinotevera copper electroplating. PTH maitiro ekuora: alkaline degreasing → yechipiri kana tertiary countercurrent rinsing → kukoromoka (micro-etching) → yechipiri countercurrent rinsing → presoak → activation → yechipiri countercurrent rinsing → degumming yechipiri → kunyura kwemhangura → kunyura kwechipiri → kunhonga kwechipiri
PTH yakadzama process tsananguro: 1. Alkaline degreasing: bvisa mavara emafuta, mafingerprints, oxides, uye huruva mumapores;gadzirisa madziro epore kubva kune yakaipa kuchaja kuenda kune yakanaka charge, iyo yakanakira adsorption yecolloidal palladium mune inotevera maitiro;kuchenesa mushure mekubvisa mafuta kunofanira kunyatsotevera nhungamiro Ita bvunzo nekunyudzwa kwemhangura yebacklight bvunzo. 2. Micro-etching: bvisa oxides pamusoro pebhodhi, roughen pamusoro pebhodhi, uye iva nechokwadi chekubatanidza simba pakati pemhangura yekunyudzwa kwemhangura inotevera uye pasi mhangura ye substrate;iyo itsva yemhangura yepamusoro ine basa rakasimba uye inogona zvakanaka adsorb colloids palladium; 3. Pre-dip: Inonyanya kuchengetedza tangi yepalladium kubva pakusvibiswa kwemvura yakagadziriswa yetangi uye kuwedzera hupenyu hwebasa repalladium tank.Izvo zvikamu zvikuru zvakafanana neaya epalladium tangi kunze kwepalladium chloride, iyo inogona kunyatsonyorovesa gomba remadziro uye kufambisa kunotevera activation yemvura.Pinda mugomba munguva yekushanda kwakakwana uye kunobudirira; 4. Activation: Mushure mekugadzirisa kwe polarity ye alkaline degreasing pretreatment, masvingo epore anonyatsopomerwa anogona kunyatsotora zvakakwana zvakasvibiswa zvakasvibiswa colloidal palladium particles kuti ave nechokwadi chekufanana, kuenderera uye kuwirirana kwekunaya kwemhangura kunotevera;Naizvozvo, degreasing uye activation yakakosha kumhando yehunotevera deposition yemhangura.Kudzora pfungwa: yakatarwa nguva;standard stannous ion uye chloride ion concentration;chaiyo giravhiti, acidity uye tembiricha zvakare zvakakosha, uye dzinofanirwa kunyatsodzorwa zvinoenderana nemirairo yekushanda. 5. Degumming: bvisa stannous ions yakavharwa kunze kwekolloidal palladium particles kuti ibudise palladium core mu colloidal particles kuti zvakananga uye zvinobudirira catalyze kemikari mhangura kunaya kwemvura.Zvakaitika zvinoratidza kuti zviri nani kushandisa fluoroboric acid se degumming agent.s Sarudzo. 6. Kunaya kwemhangura: Iyo electroless copper precipitation autocatalytic reaction inokonzerwa nekushandiswa kwepalladium nucleus.Iyo ichangobva kuumbwa kemikari mhangura uye mabatiro e-chigadzirwa hydrogen anogona kushandiswa seanoita zvinokonzeresa kukonzeresa maitiro, kuitira kuti mhangura yekunaya kwemvura irambe ichienderera.Mushure mekugadzirisa kuburikidza nenhanho iyi, mutsara wekemikari mhangura inogona kuiswa pabhodhi pamusoro kana pamadziro egomba.Munguva yekuita, mvura yekugezesa inofanira kuchengetwa pasi pemhepo yakajairwa yekusagadzikana kushandura yakawanda soluble bivalent mhangura.
Hunhu hwekunyudzwa kwemhangura hunoenderana zvakananga nemhando yekugadzira dhizaini bhodhi.Ndiyo huru sosi maitiro evarombo vias, akavhurika uye mapfupi maseketi, uye haina kukodzera yekuona kuongorora.Nzira inotevera inogona kuongororwa chete nekuedza kunoparadza.Kunyatsoongorora nekutarisisa a imwe PCB board , saka kana dambudziko rikangoitika, rinofanirwa kunge riri dambudziko rebatch, kunyangwe bvunzo ikatadza kupedzwa, chigadzirwa chekupedzisira chinokonzeresa njodzi huru dzakavanzwa kumhando, uye chinogona kungoraswa mumabhechi, saka chinofanirwa kushandirwa zvakanyanya maererano ne parameters yemirairo yekushanda. 
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