Ibiti bya SMT, bizwi kandi nka SMT bifata, SMT ifata umutuku, mubisanzwe ni umutuku (nanone umuhondo cyangwa umweru) ugabanijwe neza hamwe na hardener, pigment, solvent nibindi bifata, cyane cyane bikoreshwa mugukosora ibice kurubaho, mubisanzwe bikwirakwizwa no gutanga cyangwa ibyuma byerekana ibyuma. Nyuma yo gushiraho ibice, ubishyire mu ziko cyangwa ugaragaze itanura ryo gushyushya no gukomera. Itandukaniro riri hagati yacyo na paste yuwagurishije ni uko yakize nyuma yubushyuhe, ubushyuhe bwayo bukonje ni 150 ° C, kandi ntibizashonga nyuma yo gushyuha, ni ukuvuga ko inzira yo gukomera yubushyuhe idasubirwaho. Ingaruka yimikoreshereze ya SMT izatandukana bitewe nuburyo bwo gukiza ubushyuhe, ikintu gihujwe, ibikoresho byakoreshejwe, hamwe nibidukikije bikora. Ibifatika bigomba gutoranywa ukurikije inteko yumuzunguruko wacapwe (PCBA, PCA).
Ibiranga, gushyira mubikorwa hamwe nicyizere cya SMT yamashanyarazi
SMT umutuku utukura ni ubwoko bwa polymer ivanze, ibyingenzi byingenzi nibikoresho fatizo (ni ukuvuga ibikoresho byingenzi bya molekile), byuzuza, imiti ikiza, ibindi byongeweho nibindi. SMT umutuku utukura ufite ubwiza bwamazi, ibiranga ubushyuhe, ibiranga ubushuhe nibindi. Ukurikije ibi biranga kole itukura, mu musaruro, intego yo gukoresha kole itukura ni ugukora ibice bikomera ku buso bwa PCB kugirango birinde kugwa. Kubwibyo rero, ibishishwa bifata neza ni ugukoresha neza ibicuruzwa bitari ngombwa, kandi ubu hamwe nogukomeza kunoza igishushanyo mbonera cya PCA, binyuze muburyo bwo guhinduranya umwobo hamwe no gusudira impande zombi byaragaragaye, kandi uburyo bwo kwishyiriraho PCA ukoresheje ibipapuro bifata neza. ni Kugaragaza icyerekezo cya bike na bike.
Intego yo gukoresha SMT ifata
Irinde ibice kugwa mumashanyarazi (inzira yo kugurisha). Iyo ukoresheje kugurisha umuraba, ibice bishyirwa kumurongo wacapwe kugirango birinde ibice bitagwa mugihe ikibaho cyacapwe kinyuze mumashanyarazi.
Irinde urundi ruhande rwibigize kugwa mu gusudira kugarurwa (inzira yo gusudira impande zombi). Muburyo bwo gusudira kumpande ebyiri, kugirango hirindwe ibikoresho binini kuruhande rwagurishijwe kugwa kubera ubushyuhe bwo gushonga k'umugurisha, hagomba gukorwa kashe ya SMT.
Irinde kwimura no guhagarara kwibigize (kugarura uburyo bwo gusudira, inzira yo gutwikira mbere). Byakoreshejwe muburyo bwo gusudira hamwe no kubanziriza gutwikira kugirango wirinde kwimuka hamwe na riser mugihe cyo gushiraho.
Ikimenyetso (kugurisha imiraba, gusudira gusudira, kubanza gutwikira). Mubyongeyeho, iyo imbaho zacapwe hamwe nibice byahinduwe mubice, ibipapuro bifatika bifashisha ikimenyetso.
SMT ifata ibyiciro ikurikije uburyo bwo gukoresha
a) Ubwoko bwo gusiba: ubunini bukorwa hifashishijwe uburyo bwo gucapa no gusiba ibyuma bya mesh. Ubu buryo nuburyo bukoreshwa cyane kandi burashobora gukoreshwa muburyo bwo kugurisha imashini. Imyobo ya meshi yicyuma igomba kugenwa ukurikije ubwoko bwibice, imikorere ya substrate, ubunini nubunini nubunini bwimyobo. Ibyiza byayo ni umuvuduko mwinshi, imikorere myiza nigiciro gito.
b) Ubwoko bwo gutanga: Kole ikoreshwa ku kibaho cyumuzingo cyacapishijwe ibikoresho. Ibikoresho bidasanzwe byo gutanga birakenewe, kandi ikiguzi ni kinini. Gutanga ibikoresho ni ugukoresha umwuka wifunitse, kole itukura unyuze mumutwe udasanzwe wohereza kuri substrate, ingano ya kole, uko bingana, mugihe, igitutu cyumuvuduko wa diameter nibindi bipimo byo kugenzura, imashini itanga ifite imikorere yoroheje. . Kubice bitandukanye, turashobora gukoresha imitwe itandukanye, gushiraho ibipimo kugirango uhindure, urashobora kandi guhindura imiterere nubunini bwingingo ya kole, kugirango ugere ku ngaruka, ibyiza biroroshye, byoroshye kandi bihamye. Ingaruka ziroroshye kugira insinga zishushanyije. Turashobora guhindura ibipimo bikora, umuvuduko, umwanya, umuvuduko wikirere, nubushyuhe kugirango tugabanye izo nenge.
Gufata SMT bisanzwe CICC
witonde:
1. Iyo hejuru yo gukiza ubushyuhe nigihe kinini cyo gukira, niko imbaraga zifatika.
2. Kuberako ubushyuhe bwa patch ya kole buzahinduka hamwe nubunini bwibice bya substrate hamwe na stikeri, turasaba gushakisha uburyo bukwiye bwo gukomera.
Ububiko bwa SMT patch
Irashobora kubikwa iminsi 7 mubushyuhe bwicyumba, ububiko burenze ukwezi kwa gatandatu munsi ya 5 ° C, kandi burashobora kubikwa iminsi irenga 30 kuri 5-25 ° C.
Ubuyobozi bwa SMT patch
Kuberako SMT yamashanyarazi atukura yibasiwe nubushyuhe, ibiranga ubwiza, ubwinshi, nubushuhe bwa SMT, ibara ritukura rya SMT rigomba kuba rifite imiterere nubuyobozi busanzwe.
1) Ibara ritukura rigomba kugira umubare wihariye utemba, numubare ukurikije umubare wibyo kugaburira, itariki, nubwoko.
2) Kole itukura igomba kubikwa muri firigo ya 2 kugeza 8 ° C kugirango wirinde ibiranga ibiranga bitewe nihindagurika ryubushyuhe.
3) Kugarura glue itukura bisaba amasaha 4 mubushyuhe bwicyumba, kandi bikoreshwa muburyo bwambere.
4) Kubikorwa byo kuzuza ingingo, kole ya glue itukura igomba gutegurwa. Kuri kole itukura itigeze ikoreshwa icyarimwe, igomba gusubizwa muri firigo kugirango ibike.
5) Uzuza urupapuro rwafashwe amajwi neza. Igihe cyo gukira no gushyuha kigomba gukoreshwa. Umukoresha akeneye kwemeza ko kugarura byarangiye mbere yuko bikoreshwa. Mubisanzwe, kole itukura ntishobora gukoreshwa.
Ibiranga SMT yamashanyarazi
Ubukomezi bwihuza: SMT patch kole igomba kugira imbaraga zikomeye zo guhuza. Nyuma yo gukomera, ubushyuhe bwa weld yashonga ntabwo bwakuweho.
Gufata ingingo: Kugeza ubu, uburyo bwo gukwirakwiza ikibaho cyo gucapa burakoreshwa cyane, birasabwa rero kugira imikorere ikurikira:
Guhuza na stikeri zitandukanye
Asy Biroroshye gushiraho itangwa rya buri kintu
Guhuza gusa nuburyo bwo gusimbuza ibintu bitandukanye
Ating Gufata ingingo ihamye
Kumenyera kumashini yihuta cyane: Ububiko bwa patch ubu bugomba guhura nubwihuta bwihuse hamwe nimashini yihuta cyane. By'umwihariko, Akadomo kihuta cyane gashushanijwe nta gushushanya, kandi iyo paste yihuta yashyizweho, ikibaho cyacapwe kiri muburyo bwo kohereza. Kwizirika kwa kaseti bigomba kwemeza ko ibice bitimuka.
Gutobora no kugwa: Iyo kashe ya patch imaze kwandikwa kuri padi, ibice ntibishobora guhuzwa numuyagankuba hamwe nibibaho byacapwe. Kwirinda udupapuro twanduye.
Ubushyuhe buke bukira: Mugihe gikomeye, banza ukoreshe impinga -gusudira ubushyuhe budahagije -birwanya ibice byashizwemo kugirango bisudwe, birasabwa rero ko ibihe bigoye bigomba kuba byujuje ubushyuhe buke nigihe gito.
Kwishyira ukizana: Muburyo bwo kongera gusudira no gutwikira mbere, kashe ya patch irakomera kandi igizwe nibice mbere yuko gusudira gushonga, bityo bizabuza kurohama kwa meta no kwikosora. Kuri iyi ngingo, abayikora bakoze ubwikorezi-bushobora guhindurwa.
SMT patch ifata ibibazo bisanzwe, inenge nisesengura
Imbaraga zidahagije
Imbaraga zisabwa za capacitori 0603 ni 1.0kg, guhangana ni 1.5kg, imbaraga zo gusunika 0805 ni 1.5 kg, naho kurwanya ni 2.0kg.
Muri rusange biterwa n'impamvu zikurikira:
1. Kole idahagije.
2. Nta gukomera 100% bya colloid.
3. Ikibaho cya PCB cyangwa ibice byanduye.
4. Colloid ubwayo iranyerera kandi nta mbaraga ifite.
Amahema adahungabana
30ml ya kole ya syringe igomba gukubitwa nigitutu inshuro ibihumbi mirongo kugirango irangire, birasabwa rero kugira ubwitonzi buhebuje ubwabwo, bitabaye ibyo bizatera ingingo zifatika zidahindagurika hamwe na kole nkeya. Iyo gusudira, ibice bigwa. Ibinyuranye, kole ikabije, cyane cyane kubice bito, biroroshye kwizirika kuri padi, bikabuza guhuza amashanyarazi.
Ingingo idahagije cyangwa yamenetse
Impamvu n'ingamba zo guhangana:
1. Urubaho rwo gusohora ntirukaraba buri gihe, kandi Ethanol igomba gukaraba buri masaha 8.
2. Koleide ifite umwanda.
3. Gufungura mesh ntabwo byumvikana cyangwa bito cyane cyangwa igitutu cya gaze ni gito cyane.
4. Hariho ibibyimba muri koleo.
5. Shira umutwe kugirango uhagarike, hanyuma uhite usukura umunwa wa rubber.
6. Ubushyuhe bwo gushyushya ingingo ya kaseti ntibuhagije, kandi ubushyuhe bwa robine bugomba gushyirwaho kuri 38 ° C.
Brushed
Ibyo bita -hamagajwe ni uko ibishishwa bitavunika mugihe cyateganijwe, kandi agapira gahujwe mukadomo -cyerekezo. Hariho insinga nyinshi, kandi ibishishwa bya patch bipfundikijwe kumpapuro zacapwe, bizatera gusudira nabi. Cyane cyane iyo ubunini ari bunini, ibi bintu birashoboka cyane mugihe ukoresheje umunwa wawe. Gukemura ibishishwa bya kole ya kole byibasiwe cyane cyane ningirakamaro yibikoresho byingenzi bya resin hamwe nigenamiterere ryibintu bifatika:
1. Ongera inkubi y'umuyaga kugirango ugabanye umuvuduko wo kugenda, ariko bizagabanya cyamunara yumusaruro wawe.
2. Ubukonje buke buke, ibikoresho -koraho cyane, ntoya yo gushushanya, gerageza rero uhitemo ubu bwoko bwa kaseti.
3. Ongera gahoro gahoro ubushyuhe bwumuriro wubushyuhe, hanyuma ubihindurize ubukonje buke, -gukoraho cyane hamwe no kwangirika. Muri iki gihe, igihe cyo kubika kashe ya patch hamwe nigitutu cyumutwe wa kanda.
Gusenyuka
Amazi yimyenda ya patch atera gusenyuka. Ikibazo gikunze gusenyuka nuko kizatera gusenyuka nyuma yo gushyirwa igihe kirekire. Niba kashe ya patch yaguwe kuri padi ku kibaho cyacapwe, bizatera gusudira nabi. Kandi kuri ibyo bice bifite pin ndende ugereranije, ntishobora guhuza umubiri wingenzi wibigize, bizatera gufatana bidahagije. Kubwibyo, biroroshye gusenyuka. Byarahanuwe, bityo igenamigambi ryambere ryo gutwikisha ingingo naryo riragoye. Mu gusubiza iki, twagombaga guhitamo abatari byoroshye gusenyuka. Kubisenyuka byatewe nokudomo igihe kirekire, turashobora gukoresha kashe ya patch hamwe no gukomera mugihe gito kugirango twirinde.
Gusiba ibice
Ibice bigize offset nikintu kibi gikunze kugaragara kumashini yihuta cyane. Impamvu nyamukuru ni:
1.Ni offset yakozwe nicyerekezo cya XY mugihe ikibaho cyacapwe kigenda kumuvuduko mwinshi. Iyi phenomenon ikunda kugaragara kubice hamwe na kashe ntoya. Impamvu iterwa no gufatira hamwe.
2. Ntabwo bihuye nubunini bwa kole munsi yibigize (urugero: ingingo 2 za kole munsi ya IC, ingingo ya kole ni nini kandi ntoya). Iyo kole ishyushye kandi igakomera, imbaraga ntiziringana, kandi impera imwe hamwe na glue nkeya biroroshye kuzimya.
Gusudira igice cy'impinga
Impamvu yabitera iragoye cyane:
1. Gufata bidahagije kuri kashe ya kole.
2. Mbere yo gusudira imiraba, yakubiswe mbere yo gusudira.
3. Hariho ibisigisigi byinshi kubice bimwe.
4. Ingaruka yubushyuhe bwo hejuru yubusabane ntishobora kwihanganira ubushyuhe bwinshi
Gufata kole ivanze
Inganda zitandukanye ziratandukanye cyane mubigize imiti. Gukoresha kuvanga bikunze gutera ingaruka mbi: 1. Ingorane zihamye; 2. Gufata bidahagije; 3. Ibice bikomeye byo gusudira hejuru yimpinga.
Igisubizo ni: guhanagura neza mesh, scraper, hamwe nu mutwe-umutwe, byoroshye gutera imvange kugirango wirinde kuvanga ikoreshwa ryibirango bitandukanye bya kole.
Igihe cyo kohereza: Jun-19-2023
