Hamwe nigihe cyamakuru yamakuru ya digitale, ibisabwa byitumanaho ryinshi, itumanaho ryihuse, hamwe n’ibanga ryinshi ryitumanaho bigenda byiyongera.Nkibicuruzwa byingirakamaro byinganda zinganda zikoranabuhanga mu ikoranabuhanga, PCB isaba substrate kugirango ihuze imikorere ya dielectric ihoraho, ibintu bitakaza itangazamakuru rito, kurwanya ubushyuhe bwo hejuru, nibindi, kandi kugirango ibyo bisabwa bikenera gukoresha umwihariko wihuse cyane substrates, muribyo bikunze gukoreshwa ni ibikoresho bya Teflon (PTFE).Nyamara, mugikorwa cyo gutunganya PCB, kubera imikorere mibi yo gutunganya ibintu bya Teflon, guhanagura hejuru hakoreshejwe uburyo bwo kuvura plasma birasabwa mbere yo gutobora umwobo, kugirango habeho iterambere ryimikorere yicyuma.

Plasma ni iki?

Plasma ni uburyo bwibintu bigizwe ahanini na electroni yubusa hamwe na ion zishizwemo, ziboneka cyane mu isanzure, bikunze gufatwa nkikintu cya kane cyibintu, kizwi nka plasma, cyangwa "Ultra gaseous state", kizwi kandi nka "plasma".Plasma ifite umuvuduko mwinshi kandi ihujwe cyane na electromagnetic yumurima.

Urwego

Gukoresha ingufu (urugero ingufu z'amashanyarazi) muri molekile ya gaze mucyumba cya vacuum biterwa no kugongana kwa electroni yihuta, gutwika electron zo hanze ya molekile na atome, no kubyara ion, cyangwa radicals yubusa cyane.Gutyo, ion zavuyemo, radicals yubusa ihora igongana kandi yihutishwa nimbaraga zumuriro wamashanyarazi, kuburyo igongana nubuso bwibintu, ikanasenya imiyoboro ya molekile iri hagati ya microne nyinshi, itera kugabanuka kwubunini runaka, bikabyara umubyimba ubuso, kandi mugihe kimwe kigizwe nimpinduka zumubiri nubumara byubuso nkibikorwa byitsinda rya gaze, bitezimbere imbaraga zomuringa zometseho umuringa, kwanduza nizindi ngaruka.

Oxygene, azote, na Teflon gaze ikoreshwa muri plasma yavuzwe haruguru.

Gutunganya plasma bikoreshwa mumurima wa PCB

• Urukuta rw'imyobo nyuma yo gucukura, kura umwanda wo gucukura umwanda;
• Kuraho karbide nyuma yo gucukura laser umwobo uhumye;
• Iyo imirongo myiza ikozwe, ibisigisigi bya firime yumye bivanwaho;
• Ubuso bw'urukuta rw'umwobo bukora mbere yuko ibikoresho bya Teflon bishyirwa mu muringa;
• Gukora hejuru yimbere mbere yo kumurika isahani yimbere;
• Isuku mbere yo kurohama zahabu;
• Gukora isura mbere yo gukama no gusudira.
• Hindura imiterere yimbere yimbere no guhanagura, kunoza imbaraga zo guhuza imbaraga;
• Kuraho ibiyobora byangiza no gusudira ibisigazwa bya firime;

Imbonerahamwe itandukanye yingaruka nyuma yo gutunganywa

1. Ikigeragezo cyo kunoza Hydrophilique

2. SEM isize umuringa mu mwobo wa RF-35 mbere na nyuma yo kuvura plasma

3. Gushyira umuringa hejuru yubuyobozi bwa PTFE Base mbere na nyuma yo guhindura plasma

4. Solder mask imiterere yubuso bwibanze bwa PTFE mbere na nyuma yo guhindura plasma

Ibisobanuro by'ibikorwa bya plasma

1, Gukora neza kuvura ibikoresho bya Teflon

Ariko ba injeniyeri bose bagize uruhare mukwuzuza ibyuma bya polytetrafluoroethylene bafite uburambe: gukoresha ibisanzwe FR-4 ibyiciro byinshi byacapwe byumuzunguruko uburyo bwo gutunganya ibyuma, ntabwo bigenda neza PTFE umwobo.Muri byo, kuvura mbere yo kuvura PTFE mbere yo gushira imiti y'umuringa ni ingorane ikomeye n'intambwe y'ingenzi.Mubikorwa byo kuvura ibikoresho bya PTFE mbere yo gushira umuringa wa chimique, uburyo bwinshi burashobora gukoreshwa, ariko muri rusange, burashobora kwemeza ubwiza bwibicuruzwa, bikwiranye n’umusaruro rusange ni bibiri bikurikira:

a) Uburyo bwo gutunganya imiti: sodium yicyuma na radon, reaction mumashanyarazi adafite amazi nka tetrahydrofuran cyangwa igisubizo cya glycol dimethyl ether, gushiraho uruganda rwa nio-sodium, igisubizo cyo kuvura sodium, rushobora gukora atome yo hejuru ya Teflon muri umwobo watewe inda, kugirango ugere ku ntego yo guhanagura urukuta.Ubu ni uburyo busanzwe, ingaruka nziza, ubuziranenge buhamye, burakoreshwa cyane.

b) Uburyo bwo kuvura plasma: ubu buryo buroroshye gukora, butajegajega kandi bwizewe bwo gutunganya, bukwiranye n’umusaruro mwinshi, gukoresha umusaruro wo kumisha plasma.Igisubizo cya sodium-crucable igisubizo cyateguwe nuburyo bwo kuvura imiti biragoye guhuza, uburozi bukabije, igihe gito cyo kubaho, bigomba gutegurwa ukurikije uko umusaruro uhagaze, ibisabwa byumutekano muke.Kubwibyo, kuri ubu, uburyo bwo gutunganya ibikorwa bya PTFE, uburyo bwinshi bwo kuvura plasma, byoroshye gukora, kandi bigabanya cyane gutunganya amazi mabi.

2, Urukuta rwa cavitation / umwobo urukuta rwa resin gukuramo

Kubikorwa bya FR-4 byinshi byacapishijwe imbaho ​​zumuzunguruko, gucukura CNC nyuma yo gucukura urukuta rwumwobo hamwe no kuvanaho ibindi bintu, mubisanzwe hakoreshejwe uburyo bwa acide sulfurike yibanze, kuvura aside chromic, kuvura potassium ya alkangan alkangine, no kuvura plasma.Nyamara, muburyo bworoshye bwanditse bwumuzunguruko hamwe na platifike yumuzunguruko wacapwe kugirango ikureho umwanda wogucukura umwanda, kubera itandukaniro ryimiterere yibintu, niba hakoreshejwe uburyo bwo kuvura imiti yavuzwe haruguru, ingaruka ntabwo ari nziza, no gukoresha plasma gucukura umwanda no kuvanaho ibice, urashobora kubona urukuta rwiza rwo kurukuta, rufasha guhuza ibyuma byu mwobo, ariko kandi rufite ibiranga guhuza "bitatu-bipimo".

3, Gukuraho karbide

Uburyo bwo kuvura plasma, ntabwo bugamije gusa uburyo butandukanye bwo gutunganya umwanda woguhumanya umwanda biragaragara, ariko no kubikoresho bya resin hamwe na micropores bicukura umwanda, ariko kandi byerekana ko biri hejuru.Byongeye kandi, kubera kongera umusaruro ukenewe ku mbaho ​​nyinshi zanditseho imizunguruko y’umuzunguruko hamwe n’ubucucike buri hejuru, imyobo myinshi itobora ikozwe hifashishijwe ikoranabuhanga rya laser, ikaba ari ibicuruzwa biva mu gucukura lazeri ikoreshwa nabi - karubone, ikeneye gukurwaho mbere yuburyo bwo gutobora umwobo.Muri iki gihe, tekinoroji yo kuvura plasma, nta gutindiganya gufata inshingano zo gukuraho karubone.

4, Imbere yo gutunganya imbere

Bitewe no kongera umusaruro ukenewe ku mbaho ​​zinyuranye zacapwe, ibisabwa bijyanye na tekinoroji yo gutunganya nabyo birarenze kandi biri hejuru.Imbere yo kwitegereza imbere yumuzunguruko wacapwe byoroshye kandi byoroshye byacapwe byumuzunguruko birashobora kongera ubuso bwikigereranyo hamwe nigikorwa cyo gukora, byongera imbaraga zihuza hagati yimbere, kandi bifite akamaro kanini mugutezimbere umusaruro.

Ibyiza nibibi byo gutunganya plasma

Gutunganya plasma nuburyo bworoshye, bukora neza kandi bwujuje ubuziranenge bwo kwanduza no gusubira inyuma byimbaho ​​zacapwe.Ubuvuzi bwa plasma burakwiriye cyane cyane kubikoresho bya Teflon (PTFE) kuko bidakora imiti mike kandi kuvura plasma bikora ibikorwa.Binyuze mumashanyarazi menshi (asanzwe 40KHZ), tekinoroji ya plasma yashizweho hakoreshejwe ingufu zumuriro wamashanyarazi kugirango utandukanye gaze itunganywa mugihe cyimyuka.Ibi bitera imyuka yo gutandukana idahindagurika ihindura kandi igatera hejuru.Uburyo bwo kuvura nko gusukura neza UV, gukora, gukoresha no guhuza, hamwe na plasma polymerisation ni uruhare rwo kuvura plasma.Gutunganya plasma ni mbere yo gucukura umuringa, cyane cyane kuvura umwobo, inzira rusange yo gutunganya plasma ni: gucukura - kuvura plasma - umuringa.Kuvura plasma birashobora gukemura ibibazo byumwobo, ibisigara bisigaye, guhuza amashanyarazi nabi kumuringa wimbere no kwangirika bidahagije.By'umwihariko, kuvura plasma birashobora gukuraho neza ibisigazwa bya resin mubikorwa byo gucukura, bizwi kandi ko byanduye.Irabuza guhuza umwobo wumuringa nu muringa wimbere mugihe cyicyuma.Kugirango tunonosore imbaraga zihuza isahani hamwe na resin, fiberglass numuringa, ibyo bisate bigomba kuvaho neza.Kubwibyo, plasma degluing hamwe no kuvura ruswa byemeza amashanyarazi nyuma yo gushira umuringa.

Imashini ya plasma muri rusange igizwe nibyumba bitunganyirizwamo bifatirwa mu cyuho kandi giherereye hagati yamasahani abiri ya electrode, ihujwe na generator ya RF kugirango ikore plasmas nyinshi mubyumba bitunganyirizwamo.Mu cyumba gitunganyirizwamo amasahani abiri ya electrode, igenamiterere riringaniye rifite ibice bibiri byikarita ihabanye kugirango habeho umwanya wo kubamo garama nyinshi zishobora kwakira imbaho ​​zitunganya plasma.Muburyo busanzwe bwo gutunganya plasma yubuyobozi bwa PCB, mugihe insimburangingo ya PCB ishyizwe mumashini ya plasma yo gutunganya plasma, insimburangingo ya PCB ishyirwa muburyo bukwiranye hagati yikarita ijyanye nicyumba cyo gutunganya plasma (ni ukuvuga igice kirimo gutunganya plasma; umuzunguruko), plasma ikoreshwa muri plasma kuvura plasma yo kuvura umwobo kuri substrate ya PCB kugirango itezimbere ubuso bwumwobo.

Umwanya wo gutunganya imashini ya plasma ni ntoya, kubwibyo, muri rusange hagati yicyumba cyogutunganya ibyapa bibiri bya electrode hashyizweho hamwe na joriji enye zifata amakarita yerekana ikarita, ni ukuvuga ko gushiraho ibice bine bishobora kwakira plasma itunganyirizwamo ikibanza cyumuzunguruko.Muri rusange, ubunini bwa buri gride yumwanya wubuhungiro ni 900mm (ndende) x 600mm (uburebure) x 10mm (ubugari, ni ukuvuga ubunini bwikibaho), ukurikije uburyo bwa PCB busanzwe bwo gutunganya plasma, buri gihe ikibaho cyo gutunganya plasma ifite ubushobozi bwa tekinike 2 (900mm x 600mm x 4), mugihe buri gihe cyo gutunganya plasma ni amasaha 1.5, bityo igatanga umunsi umwe wa metero kare 35.Birashobora kugaragara ko ubushobozi bwo gutunganya plasma yubuyobozi bwa PCB butari hejuru ukoresheje uburyo bwo gutunganya plasma yubuyobozi bwa PCB buriho.

Incamake

Kuvura plasma bikoreshwa cyane cyane mumasahani menshi, HDI , bikomeye kandi byoroshye guhuza, cyane cyane kubikoresho bya Teflon (PTFE).Ubushobozi buke bwo gukora, ikiguzi kinini nabwo ni imbogamizi, ariko ibyiza byo kuvura plasma nabyo biragaragara, ugereranije nubundi buryo bwo kuvura hejuru, ni mukuvura ibikorwa bya Teflon, kunoza hydrophilicity, kugirango harebwe ko metallisation yu mwobo, kuvura umwobo wa laser, kuvanaho umurongo utomoye usigaye wa firime yumye, gukomeretsa, mbere-gushimangira, gusudira na silkscreen yerekana imiterere, ibyiza byayo ntibisimburwa, kandi bifite n'ibiranga isuku, bitangiza ibidukikije.