Kev soj ntsuam ntawm Electroplating txheej txheem tswj rau hluav taws xob cua sov raj

Kev soj ntsuam ntawm Electroplating txheej txheem tswj rau hluav taws xob cua sov raj

Kev tsom xam ntawm cov duab hloov pauv

Cov duab hloov pauv ntawm cov ntawv luam tawm Circuit boards (PCBs) feem ntau suav nrog cov kauj ruam xws li kev teeb tsa zaj duab xis, raug, thiab kev txhim kho, thiab cov txiaj ntsig ntawm cov duab hloov pauv muaj qhov cuam tshuam loj heev rau qhov zoo ntawm electroplating thiab ntxiv cov khoom siv hluav taws xob zoo. Qhov kev sim xaiv δ Rau 40 μ Siv cov yeeb yaj kiab qhuav ntawm m thiab saib nws nrog lub iav loj tom qab ua tiav. Nws tau pom tias cov yeeb yaj kiab qhuav ua rau zoo rau qhov chaw tooj liab tsis muaj npuas lossis wrinkles, qhia txog kev siv zaj duab xis zoo. Cov kab dav dav thiab qhov sib nrug ntawm kev sim ntau lawm yog tag nrho 50 μ m. Thiab qhov layout ntawm Circuit Court yog qhov ntom. Txhawm rau kom ua tiav cov duab hloov pauv zoo dua, lub tshuab laser ncaj qha pom (LDI) raug siv los nthuav tawm lub voj voog. Tom qab qhov raug ua tiav lawm, lub iav tsom iav tau siv los saib xyuas qhov cuam tshuam ntawm qhov hluav taws xob thiab qhov. Nws tau pom tias cov kab ntawm cov kab hluav taws xob tau pom meej heev tom qab raug, thiab kev sib dhos ntawm lub qhov yog qhov tseeb, raws li pom hauv daim duab 2 (a). Piv nrog rau cov qauv duab hloov pauv siv cov duab thaij duab, LDI raug kaw tsis tsuas yog txo cov txheej txheem ntws tab sis kuj tseem txhim kho qhov tseeb ntawm cov duab kos mus rau ± 5 feem pua ​​μ Hauv m (vim kev tsim khoom thiab khaws cia cov duab thaij duab, cov yam ntxwv ntawm cov duab kos duab, raug tshuab lub teeb qhov chaw, thiab ntau yam lwm yam, qhov kev ua yuam kev loj loj, uas tuaj yeem ncav cuag ± 25 μ m). Tom qab kis tau, lub phaj tooj liab tau muab tso rau 15 feeb rau kev txhim kho. Tom qab kev txhim kho, cov zaj duab xis qhuav ntawm qhov chaw ntawm lub phaj tau raug kuaj thiab tsis muaj qhov tshwm sim xws li kev cuam tshuam zaj duab xis lossis warping, raws li pom hauv daim duab 2 (b). Nws tuaj yeem pom tias qhov kawg ntawm cov duab hloov pauv tau zoo, ua tau raws li qhov yuav tsum tau ua rau kev tsim hluav taws xob zoo los ntawm electroplating ntxiv.

3.2 Kev Ntsuam Xyuas Kev Tswj Xyuas Txheej Txheem Electroplating

3.2.1 Cov nyhuv ntawm tooj liab sulfate thiab sulfuric acid loj concentration

Kev sim ntau lawm ntawm cov ntawv luam tawm Circuit Court boards muaj ib tug me me aperture ntawm conducting qhov, nrog ad ntawm 200 μ m. Thiab lub thickness rau txoj kab uas hla yog 7.5: 1, uas tso rau pem hauv ntej siab yuav tsum tau rau lub sib sib zog nqus plating muaj peev xwm ntawm cov electroplating tooj liab tov. Kev sib sib zog nqus plating muaj peev xwm nyob rau hauv cov tshuaj plating yog cuam tshuam los ntawm ntau yam xws li qhov sib piv ntawm cov kua qaub tooj liab, cathode tam sim no ceev, thiab cov khoom siv ntxiv. Kev cuam tshuam ntawm huab hwm coj concentration ntawm tooj liab sulfate thiab sulfuric acid ntawm qhov sib sib zog nqus plating muaj peev xwm raug tshuaj xyuas. Tswj cov plating tov rau 70g / L tooj liab sulfate, 190g / L sulfuric acid, brightener, leveling tus neeg saib xyuas, thiab ib tug tsim nyog tus nqi ntawm Cl - rau electroplating

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