Kufotokozera
Flux: Mankhwala omwe angathandize ndikulimbikitsa kuwotcherera, ndipo amakhala ndi chitetezo komanso amalepheretsa kuyamwa kwa okosijeni. Flux imatha kugawidwa kukhala olimba, madzi ndi gasi. Zimaphatikizapo "kuthandiza kutentha," "kuchotsa ma oxides", "kuchepetsa kugwedezeka kwa zinthu zomwe zikuwotcherera", "kuchotsa madontho a mafuta pamwamba pa zinthu zomwe zimawotchedwa, kuonjezera malo owotcherera", ndi "kupewa reoxidation" . Mwa izi, ntchito ziwiri zofunika kwambiri ndizo: "kuchotsa ma oxides" ndi "kuchepetsa kupsinjika kwa zinthu zomwe zikuwotcherera".
Kusankha flux Ntchito ya flux ndikuwongolera magwiridwe antchito komanso kulimbitsa kuwotcherera. Flux akhoza kuchotsa oxides pa zitsulo pamwamba ndi kupewa kupitiriza oxidize, kumapangitsanso ntchito ya solder ndi zitsulo pamwamba, potero kuonjezera nyongolotsi luso ndi adhesion.
Flux imaphatikizapo kutulutsa kwamphamvu kwa asidi, kufooka kwa asidi, kusalowerera ndale ndi mitundu ina. Zomwe zimagwiritsidwa ntchito kawirikawiri kwa akatswiri amagetsi zimaphatikizapo rosin, rosin solution, solder phala ndi mafuta a solder, ndi zina zotero. Solder phala ndi solder mafuta ndi dzimbiri ndipo sangathe ntchito solder zida zamagetsi ndi matabwa ozungulira. Pambuyo pa soldering, phala lotsalira la solder ndi mafuta a solder ayenera kupukuta. Rosin ayenera kugwiritsidwa ntchito ngati flux pokonza zikhomo za zigawo zikuluzikulu. Ngati bolodi losindikizidwa lakutidwa ndi yankho la rosin, palibe flux yomwe imafunikira pakugulitsa zigawozo.
Kwa opanga, palibe njira yoyesera mawonekedwe a flux. Ngati mukufuna kudziwa ngati zosungunulira zosungunulira zasintha, mutha kuyeza mphamvu yokoka yeniyeni. Ngati mphamvu yokoka ikuwonjezeka kwambiri, tinganene kuti zosungunulira zasintha.
Posankha flux, pali malingaliro awa opanga:
Choyamba, kununkhiza fungo kuti muzindikire mtundu wa zosungunulira zomwe zimagwiritsidwa ntchito. Mwachitsanzo, methanol imakhala ndi fungo laling'ono koma limatsamwitsa kwambiri, mowa wa isopropyl umanunkhiza kwambiri, ndipo Mowa umanunkhira bwino. Ngakhale kuti wogulitsa angagwiritsenso ntchito zosungunulira zosakanikirana, ngati woperekayo akufunsidwa kuti apereke lipoti lapangidwe, nthawi zambiri amapereka; Komabe, mtengo wa mowa wa isopropyl ndi pafupifupi 3-4 nthawi ya methanol. Ngati mtengo wachepetsedwa kwambiri ndi wogulitsa, zingakhale zovuta kunena zomwe zili mkati
Chachiwiri, dziwani chitsanzo. Iyi ndiyenso njira yofunikira kwambiri kuti opanga ambiri asankhe flux. Potsimikizira chitsanzocho, woperekayo ayenera kufunsidwa kuti apereke lipoti loyenera la parameter ndikuliyerekezera ndi chitsanzo. Ngati chitsanzocho chatsimikiziridwa bwino, kubweretsa kotsatira kuyenera kufananizidwa ndi magawo oyambirira. Pakachitika zolakwika, mphamvu yokoka, acidity, ndi zina zotere ziyenera kufufuzidwa. Kuchuluka kwa utsi wopangidwa ndi flux ndi chizindikiro chofunika kwambiri.
Chachitatu, msika wa flux umasakanikirana. Posankha, muyenera kumvetsetsa bwino ziyeneretso za wogulitsa. Ngati ndi kotheka, mutha kupita kwa wopanga kuti muwone fakitale. Ngati ndi wopanga ma flux osakhazikika, amawopa kwambiri seti iyi. Momwe mungagwiritsire ntchito flux Tisanayambe njira yogwiritsira ntchito, tiyeni tikambirane za gulu la flux. Ikhoza kugawidwa m'magulu osiyanasiyana omwe si a polar flux. Omwe amagulitsidwa pamsika amatchedwa "mafuta a solder". Onetsetsani kuti mukuyeretsa mukatha kugwiritsa ntchito, apo ayi ndizosavuta kuwononga ndikuwononga chinthu chowotcherera.
Mtundu wina ndi organic series flux, yomwe imatha kuwola mwachangu ndikusiya zotsalira zosagwira ntchito. Mtundu wina ndi utomoni yogwira mndandanda flux. Kuthamanga kwamtunduwu sikuwononga, kumateteza kwambiri komanso kumakhala ndi kukhazikika kwanthawi yayitali. Chomwe chimagwiritsidwa ntchito kwambiri ndikuwonjezera activator ku rosin flux.
Nthawi zambiri, njira yogwiritsira ntchito aluminium flux ndiyosavuta. Choyamba, pukutani mowa pa weld kuchotsa banga mafuta, ndiyeno inu mukhoza kugwiritsa ntchito flux pamwamba kuti welded, ndiyeno mukhoza kuwotcherera. Koma muyenera kukumbukira kuyeretsa pambuyo kuwotcherera, ndi kulabadira chitetezo pamene ntchito, ndipo musalole kulowa mkamwa, mphuno, pakhosi ndi kukhudza khungu. Mukapanda kugwiritsa ntchito, ingosindikizani ndikuyika pamalo ozizira komanso opanda mpweya wabwino.
Chinsinsi cha mabwalo opangira ma solder okhala ndi malata ndikuyeretsa malo osungira, kutentha ndi kusungunula rosin pa malo osungiramo katundu kapena kugwiritsa ntchito flux pa chinthu chomwe chiyenera kugulitsidwa, ndiyeno gwiritsani ntchito chitsulo chosungunula kuti muyimire ndikuyiloza pa mfundoyo. kuti agulitsidwe. Nthawi zambiri, rosin amagwiritsidwa ntchito kugulitsa tinthu tating'onoting'ono, ndipo flux imagwiritsidwa ntchito kugulitsa zinthu zazikulu. Rosin amagwiritsidwa ntchito pa matabwa ozungulira, ndipo flux imagwiritsidwa ntchito pazitsulo zamtundu umodzi.
Malangizo:
1. Moyo wa alumali wosindikizidwa ndi theka la chaka. Chonde musawumitse mankhwalawa. The bwino yosungirako kutentha: 18 ℃-25 ℃, yabwino yosungirako chinyezi: 75% -85%.
2. Pambuyo posungidwa kwa nthawi yayitali, mphamvu yake yokoka iyenera kuyesedwa musanagwiritse ntchito, ndipo mphamvu yokoka iyenera kusinthidwa kukhala yachibadwa mwa kuwonjezera diluent.
3. Zosungunulira zosungunulira ndi mankhwala oyaka moto. Iyenera kugwiritsidwa ntchito pamalo olowera mpweya wabwino, kutali ndi moto, komanso kupewa kuwala kwa dzuwa.
4. Mukamagwiritsa ntchito flux mu thanki yosindikizidwa, samalani ndikusintha moyenerera voliyumu ya kupopera ndi kupopera mphamvu molingana ndi momwe ng'anjo yowotcherera imagwirira ntchito komanso mawonekedwe a chinthucho.
5. Kutulukako kumawonjezeredwa mosalekeza mu thanki yosindikizidwa, matope ochepa amaunjikana pansi pa thanki yosindikizidwa. Pakapita nthawi yayitali, matope ambiri amawunjikana, zomwe zingapangitse kuti makina opopera a ng'anjo ya wave crest atsekedwe. Pofuna kupewa sediment kutsekereza kutsitsi dongosolo la yoweyula Crest ng'anjo, okhudza kutsitsi voliyumu ndi chikhalidwe utsi ndi kuchititsa PCB soldering mavuto, m'pofunika nthawi zonse kuyeretsa ndi kusunga kutsitsi dongosolo monga losindikizidwa thanki ndi fyuluta. Ndibwino kuti muzichita kamodzi pa sabata ndikusintha madziwo ndi sediment pansi pa thanki yotsekedwa.
Kwa ntchito pamanja soldering:
1. Yesetsani kuti musathire madzi ochulukirapo nthawi imodzi, onjezani ndi kuwonjezera molingana ndi kuchuluka kwa kupanga;
2. Onjezani 1/4 wosungunula ola limodzi lililonse, ndipo onjezerani kuchuluka koyenera kwa maola awiri aliwonse;
3. Musanadye chakudya chamasana ndi madzulo kapena mukasiya kugwiritsa ntchito, yesani kusindikiza kutuluka;
4. Musanachoke kuntchito usiku, tsanulirani mosamala madzi mu thireyi kubwerera mumtsuko ndikutsuka thireyi ndi nsalu yoyera kuti mugwiritse ntchito;
5. Mukamagwiritsa ntchito flux yomwe idagwiritsidwa ntchito dzulo, onjezerani 1/4 diluent ndi kuwirikiza kawiri kuchuluka kwatsopano komwe sikunagwiritsidwe ntchito, kotero kuti kutuluka komwe kumagwiritsidwa ntchito dzulo kungagwiritsidwe ntchito mokwanira kuti zisawonongeke.
6. Mukamagwiritsa ntchito flux ndi kupopera kapena kuchita thovu, chonde yang'anani pafupipafupi kuthamanga kwa mpweya wa kompresa. Ndibwino kuti muzisefa chinyezi ndi mafuta mumlengalenga ndi mapulogalamu oposa awiri owonetsetsa molondola, ndikugwiritsa ntchito mpweya wouma, wopanda mafuta, komanso madzi opanda madzi kuti musasokoneze mapangidwe ndi machitidwe a flux.
7. Samalani ndi kusintha kwa kupopera mbewu mankhwalawa, ndipo onetsetsani kuti kutuluka kwake kumagawidwa mofanana pa PCB pamwamba.
8. Mafunde a malata ndi athyathyathya, PCB siwopunduka, ndipo mawonekedwe amtundu wofanana amatha kupezeka.
9. Pamene PCB yam'chitini ili ndi okosijeni kwambiri, chonde chitani machiritso oyenera kuti muwonetsetse kuti ali abwino komanso ogulitsidwa.
10. Kutuluka kosasindikizidwa kumayenera kusindikizidwa musanasungidwe. Osatsanulira flux yomwe yagwiritsidwa kale ntchito m'paketi yoyambirira kuti muwonetsetse ukhondo wamadzi oyambawo.
11. Kuthamanga kochotsedwa kumafunika kusamaliridwa ndi munthu wodzipereka ndipo sikungathe kutayidwa mwakufuna kuwononga chilengedwe.
12. Panthawi yogwira ntchito, bolodi lopanda kanthu ndi phazi la ziwalozo ziyenera kutetezedwa kuti zisawonongeke ndi thukuta, madontho a m'manja, zonona za nkhope, mafuta kapena zinthu zina. Kuwotcherera kusanamalizidwe komanso kusauma kwathunthu, chonde sungani bwino ndipo musamayipitse ndi manja anu. 13. Kuchuluka kwa zokutira zotsekemera kumadalira zofunikira za mankhwala. Kuchuluka kovomerezeka kwa matabwa a mbali imodzi ndi 25-55ml / min, ndipo chiwerengero chovomerezeka cha matabwa a mbali ziwiri ndi 35-65ml / min.
14. Pamene flux ikugwiritsidwa ntchito ndi foating process, m'pofunika kulamulira mphamvu yokoka yeniyeni ya flux kuteteza mapangidwe ndi ntchito ya flux kukhudzidwa ndi volatilization wa solvents mu flux, kuwonjezeka kwa mphamvu yokoka yeniyeni, ndi kuwonjezeka kwa ndende ya flux. Ndi bwino kudziwa mphamvu yokoka ya flux pambuyo pafupifupi 2 hours thovu. Pamene mphamvu yokoka ikuwonjezeka, onjezerani mlingo woyenera wa diluent kuti musinthe. Mitundu yovomerezeka yowongolera mphamvu yokoka ndi ± 0.01 ya mphamvu yokoka yamadzimadzi oyambira. 15. Kutentha kwa preheating kwa flux, kutentha kovomerezeka pansi pa bolodi lokhala ndi mbali imodzi ndi 75-105 ℃ (kutentha kovomerezeka pamwamba pa bolodi la mbali imodzi ndi 60-90 ℃), ndi kutentha kovomerezeka. Pansi pa bolodi lokhala ndi mbali ziwiri ndi 85-120 ℃ (kutentha kovomerezeka pamwamba pa bolodi lokhala ndi mbali ziwiri ndi 70-95 ℃).
16. Kuti mupewe zina, chonde lembani ku Material Safety Specification Sheet (MSDS) yoperekedwa ndi kampani yathu.
Zida zowotcherera za Xinfa zili ndi mawonekedwe apamwamba komanso otsika mtengo. Kuti mudziwe zambiri, chonde pitani:Opanga Kuwotcherera & Kudula - China Welding & Cutting Factory & Suppliers (xinfatools.com)
Nthawi yotumiza: Aug-29-2024
