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.
SMT patch ifata ibintu bisanzwe byo gukiza
| Gukiza ubushyuhe | Igihe cyo gukiza |
| 100 ℃ | Iminota 5 |
| 120 ℃ | Amasegonda 150 |
| 150 ℃ | Amasegonda 60 |
Icyitonderwa:
1, hejuru yubushyuhe bwo gukiza nigihe kinini cyo gukira, niko imbaraga zihuza.
2, kubera ko ubushyuhe bwama patch buzahinduka hamwe nubunini bwibice bya substrate hamwe nu mwanya wo kuzamuka, turasaba gushakisha uburyo bukwiye bwo gukomera.
Ububiko bwa SMT
Irashobora kubikwa iminsi 7 mubushyuhe bwicyumba, mugihe kirenze amezi 6 munsi ya 5 ° C, no muminsi irenga 30 kuri 5 ~ 25 ° C.
Ubuyobozi bwa SMT
Kuberako SMT yamashanyarazi itukura yibasiwe nubushyuhe hamwe nubwiza bwayo, ubwinshi bwamazi, gutose nibindi biranga, bityo rero SMT yamashanyarazi itukura igomba kuba ifite uburyo bumwe bwo gukoresha nubuyobozi busanzwe.
1) Kole itukura igomba kugira umubare wihariye utemba, ukurikije umubare wibiryo, itariki, ubwoko bwumubare.
2) Kole itukura igomba kubikwa muri firigo kuri 2 ~ 8 ° C kugirango birinde ibiranga ingaruka kubera ihindagurika ryubushyuhe.
3) Kole itukura irasabwa gushyukwa mubushyuhe bwicyumba kumasaha 4, muburyo bwa mbere-bwambere-bukoreshwa.
4) Kubikorwa byo gutanga, kole itukura ya hose igomba guhindurwa, kandi kole itukura itarakoreshwa igomba gusubira muri firigo kugirango ibike, kandi kole ishaje hamwe na kole nshya ntibishobora kuvangwa.
5) Kugira ngo wuzuze neza ifishi yubushyuhe bwo kugaruka, garuka ubushyuhe bwumuntu nigihe cyo kugaruka, uyikoresha agomba kwemeza ko yarangije ubushyuhe bwo kugaruka mbere yo gukoresha. Mubisanzwe, kole itukura ntishobora gukoreshwa igihe.
Ibikorwa biranga SMT yamashanyarazi
Imbaraga zo guhuza: Ibiti bya SMT bigomba kugira imbaraga zikomeye zo guhuza, nyuma yo gukomera, ndetse no mubushyuhe bwo gushonga kubagurisha ntibikuramo.
Akadomo k'akadomo: Kugeza ubu, uburyo bwo gukwirakwiza imbaho zacapwe ahanini ni utudomo, bityo rero kole isabwa kugira ibintu bikurikira:
Guhuza nuburyo butandukanye bwo gushiraho
Biroroshye gushiraho itangwa rya buri kintu
. Biroroshye guhuza no gusimbuza ibice bigize ibice
Ing Umubare utudomo utubutse
Kumenyera kumashini yihuta: ibipapuro bifata ubu bikoreshwa bigomba kuba byujuje umuvuduko mwinshi wimyenda yabugenewe hamwe nimashini yihuta yihuta, byumwihariko, ni ukuvuga, kwihuta cyane kwihuta nta gushushanya insinga, kandi ni, umuvuduko mwinshi gushiraho, icapiro ryanditse muburyo bwo kohereza, ibifatika kugirango umenye neza ko ibice bitimuka.
Gushushanya insinga, gusenyuka: iyo kashe ya patch imaze kwizirika kuri padi, ibice ntibishobora kugera kumashanyarazi hamwe nibibaho byacapwe, bityo ko kashe ya patch ntigomba gushushanya insinga mugihe cyo gutwikira, nta gusenyuka nyuma yo gutwikira, kugirango bidahumanya padi.
Gukiza ubushyuhe buke: Iyo ukize, ibice bitarwanya ubushyuhe byacometse hamwe nogusudira kumuraba bigomba no kunyura mu itanura ryo gusudira, bityo ibihe bigoye bigomba kuba byujuje ubushyuhe buke nigihe gito.
Kwishyira ukizana: Muburyo bwo gusudira no gusiga mbere yo gutwikira, kole yamashanyarazi irakira kandi igashyirwaho mbere yuko uyigurisha ashonga, bityo bizarinda ibice kurohama mubagurisha no kwiyobora. Mu gusubiza iki, ababikora bakoze iterambere-ryonyine.
SMT ifata ibibazo bisanzwe, inenge nisesengura
kutizerana
Imbaraga zisabwa zisabwa na capacitori 0603 ni 1.0KG, kurwanya ni 1.5KG, imbaraga zo gusunika za 0805 ni 1.5KG, kurwanya ni 2.0KG, bidashobora kugera kuntego yavuzwe haruguru, byerekana ko imbaraga zidahagije .
Muri rusange biterwa n'impamvu zikurikira:
1, ingano ya kole ntabwo ihagije.
2, colloid ntabwo yakize 100%.
3, Ubuyobozi bwa PCB cyangwa ibice byanduye.
4, colloid ubwayo iracitse, nta mbaraga.
Thixotropic ihungabana
30ml ya kole ya siringi igomba gukubitwa inshuro ibihumbi icumi numuvuduko wumwuka kugirango ukoreshwe, bityo kole ya patch ubwayo isabwa kugira thixotropy nziza, bitabaye ibyo bizatera ihungabana ryumwanya wa kole, kole nkeya, izayobora ku mbaraga zidahagije, bigatuma ibice bigwa mugihe cyo kugurisha imiraba, kurundi ruhande, ingano ya kole ni myinshi cyane cyane kubice bito, byoroshye kwizirika kuri padi, bikabuza guhuza amashanyarazi.
Kole idahagije cyangwa ingingo yamenetse
Impamvu n'ingamba zo guhangana:
1, ikibaho cyo gucapa ntabwo gisukurwa buri gihe, kigomba guhanagurwa na Ethanol mumasaha 8.
2, colloid ifite umwanda.
3, gufungura ikibaho cya mesh ntabwo bidafite ishingiro cyane cyangwa igitutu cyo gutanga ni gito cyane, igishushanyo cya kole idahagije.
4, hariho ibibyimba muri colloid.
5. Niba umutwe utanga uhagaritswe, nozzle itanga igomba guhita isukurwa.
6, ubushyuhe bwo gushyushya umutwe utanga ntibihagije, ubushyuhe bwumutwe utanga bugomba gushyirwaho kuri 38 ℃.
gushushanya insinga
Ibyo bita gushushanya insinga ni ibintu byerekana ko kashe ya patch itavunika mugihe utanze, kandi kole ya patch ihujwe muburyo buteye isoni bwerekeza kumutwe. Hariho insinga nyinshi, kandi ibishishwa bya patch bipfundikijwe kumpapuro zacapwe, bizatera gusudira nabi. Cyane cyane iyo ingano ari nini, iyi phenomenon irashoboka cyane mugihe ingingo itwikiriye umunwa. Igishushanyo cya patch kole cyibasiwe cyane cyane no gushushanya umutungo wibice byingenzi bigize resin hamwe nugushiraho ingingo zifatika.
1, ongera inkorora, kugabanya umuvuduko wo kugenda, ariko bizagabanya umusaruro wawe.
2, uko ubukonje buke buke, thixotropy yo hejuru yibikoresho, ntoya yo gushushanya, gerageza rero uhitemo ibipapuro bifatika.
3, ubushyuhe bwa thermostat buri hejuru cyane, guhatirwa kumenyera ubukonje buke, glix thixotropic patch glue, hanyuma ukanareba igihe cyo kubika kashe ya patch hamwe numuvuduko wumutwe utanga.
ubuvumo
Amazi ya patch azatera gusenyuka. Ikibazo gikunze gusenyuka nuko gushira igihe kirekire nyuma yo gutwikira ibibanza bizatera gusenyuka. Niba kashe ya patch yongerewe kuri padi yumuzingo wacapwe, bizatera gusudira nabi. Kandi gusenyuka kw'ibiti bifata kuri ibyo bice bifite ibipimo birebire cyane, ntibikora ku mubiri nyamukuru wibigize, bizatera gufatana bidahagije, bityo igipimo cyo gusenyuka kw'ibiti byoroshye byoroshye gusenyuka biragoye guhanura, igenamigambi ryambere rya dot coating amount nayo iragoye. Urebye ibi, tugomba guhitamo ibitari byoroshye gusenyuka, ni ukuvuga, patch iri hejuru cyane mugisubizo cya shake. Kubisenyuka byatewe no gushyira umwanya muremure nyuma yo gutwikirwa, turashobora gukoresha igihe gito nyuma yikibiriti kugirango twuzuze kashe ya pashe, dukize kugirango twirinde.
Gusiba ibice
Ibice bigize offset nikintu kitifuzwa cyoroshye kugaragara mumashini yihuta ya SMT, kandi impamvu nyamukuru ni:
1, ni ikibaho cyanditseho umuvuduko mwinshi wicyerekezo cya XY cyatewe na offset, agace kometseho agace gashizwemo uduce duto duto dukunze kwibasirwa niki kintu, impamvu nuko gufatana bidatewe.
2, ingano ya kole munsi yibigize ntabwo ihuye (nka: ingingo ebyiri za kole munsi ya IC, ingingo imwe ya kole nini nini na kole imwe ni nto), imbaraga za kole ntiziringaniye iyo zishyushye kandi zigakira, kandi iherezo hamwe na kole nkeya biroroshye kuzimya.
Kurenza kugurisha ibice
Impamvu ziragoye:
1. Imbaraga zifatika za patch ntizihagije.
2. Byagize ingaruka mbere yo kugurisha umuraba.
3. Hariho ibisigisigi byinshi kubice bimwe.
4, colloid ntabwo irwanya ingaruka zubushyuhe bwo hejuru
Kuvanga kole
Abakora ibintu bitandukanye bakora ibishishwa bya kashe mubigize imiti bifite itandukaniro rinini, gukoresha imvange biroroshye kubyara ibibi byinshi: 1, gukiza ingorane; 2, kwifata bifatika ntibihagije; 3, hejuru yo kugurisha umuraba bikomeye.
Igisubizo ni: sukura neza ikibaho cya mesh, scraper, gutanga nibindi bice byoroshye gutera kuvanga, kandi wirinde kuvanga ibirango bitandukanye bya kole.
Igihe cyo kohereza: Jul-05-2023
