1. Mtundu wowotcherera
Nthawi zambiri, kuwotcherera akhoza kugawidwa m'magulu atatu: kuwotcherera chitsulo chamagetsi, kuwotcherera kwachitsulo, nsanja yowotcherera ndi kuwotchereranso reflow:
a: Njira yodziwika kwambiri ndi kutsekemera kwa magetsi, monga kupanga ndi kukonza zipangizo zamagetsi.Masiku ano, opanga ma LED, kuti apulumutse ndalama zawo zopangira, amagwiritsa ntchito zitsulo zabodza komanso zopanda pake, zomwe zimapangitsa kuti asagwirizane komanso nthawi zina kutayikira.Panthawi yowotcherera, izi ndizofanana ndi kupanga chigawo pakati pa nsonga yachitsulo yomwe ikutuluka - LED yogulitsidwa - thupi la munthu - ndi dziko lapansi, ndiko kunena kuti, mphamvu yamagetsi yomwe imakhala nthawi makumi khumi mpaka mazana ambiri kuposa mphamvu yamagetsi. ndi mikanda nyali umagwiritsidwa ntchito kwa nyali mikanda LED, nthawi yomweyo kuwotcha iwo kunja.
b: Kuwala kwakufa komwe kumayambitsidwa ndi kuwotcherera pa nsanja yotenthetsera kwakhala chida chabwino kwambiri chopangira mabizinesi ambiri kuti akwaniritse zosowa zamagulu ang'onoang'ono ndi madongosolo azitsanzo chifukwa cha kuchuluka kosalekeza kwa zitsanzo za nyali.Chifukwa cha ubwino wa mtengo wotsika wa zipangizo, dongosolo losavuta ndi ntchito, nsanja yowotchera yakhala chida chabwino kwambiri chopangira, Chifukwa cha malo ogwiritsira ntchito (monga vuto la kusakhazikika kwa kutentha m'madera omwe ali ndi mafani), luso la ogwira ntchito zowotcherera, ndi kuwongolera liwiro kuwotcherera, pali vuto lalikulu la magetsi akufa.Kuphatikiza apo, pali kuyika kwa zida zotenthetsera nsanja.
c: Reflow soldering nthawi zambiri ndiyo njira yodalirika yopangira, yomwe ili yoyenera kupanga ndi kukonza zambiri.Ngati opareshoniyo ili yosayenera, izi zimabweretsa zotsatira zoyipa kwambiri zakufa, monga kusintha kosasinthika kwa kutentha, kusakhazikika kwa makina, ndi zina zambiri.
2. Malo osungira omwe amachititsa magetsi akufa
Izi zimachitika kawirikawiri.Tikatsegula phukusi, sitimayang'ana njira zoteteza chinyezi.Mikanda yambiri ya nyali pamsika pano imasindikizidwa ndi silika gel.Zinthu izi zitenga madzi.Mikanda ya nyali ikakhudzidwa ndi chinyezi, gel osakaniza a silica amawonjezera kutentha pambuyo pakuwotcherera kwa kutentha kwambiri.Waya wagolide, chip ndi bulaketi zidzapunduka, zomwe zimapangitsa kuti waya wa golide asamuke ndi kuphwanyidwa, ndipo malo owunikirawo sadzayatsidwa, Chifukwa chake, tikulimbikitsidwa kusunga ma LED pamalo owuma komanso olowera mpweya, ndi kutentha kosungirako - - 40 ℃ -+100 ℃ ndi chinyezi wachibale zosakwana 85%;Ndibwino kuti mugwiritse ntchito LED muzoyika zake zoyambirira mkati mwa miyezi itatu kuti musachite dzimbiri pa bulaketi;Chikwama chonyamula cha LED chikatsegulidwa, chiyenera kugwiritsidwa ntchito posachedwa.Panthawiyi, kutentha kosungirako ndi 5 ℃ -30 ℃, ndi chinyezi chapafupi ndi 60%.
3. Kuyeretsa mankhwala
Osagwiritsa ntchito zamadzimadzi zosadziwika bwino kuyeretsa LED, chifukwa zitha kuwononga pamwamba pa colloid ya LED komanso kupangitsa ming'alu ya colloid.Ngati ndi kotheka, yeretsani ndi swab ya mowa m'chipinda chozizira komanso mpweya wabwino, makamaka pasanathe mphindi imodzi mphepo itatha.
4. Kusintha kumayambitsa kuwala kwakufa
Chifukwa cha kusinthika kwa mapanelo ena owala, ogwira ntchito adzachitidwa opaleshoni yapulasitiki.Pamene mapanelo amapunduka, mikanda yowala pa iwo imapindikanso palimodzi, kuswa waya wagolide ndikupangitsa kuti magetsi asawalitse.Ndi bwino kuchita opaleshoni pulasitiki pamaso kupanga kwa mtundu uwu gulu.Kusonkhana kwautali ndikugwira ntchito panthawi yopanga kungayambitsenso kupunduka ndi kusweka kwa waya wagolide.Komanso, amayamba chifukwa cha stacking.Pofuna kuwongolera njira yopangira, mapanelo a nyali amasungidwa mwachisawawa.Chifukwa cha mphamvu yokoka, gawo lapansi la mikanda ya nyali lidzakhala lopunduka ndikuwononga waya wagolide.
5. Mapangidwe a kutentha kwa kutentha, magetsi, ndi bolodi la nyali sizikugwirizana
Chifukwa chosayeneramagetsikupanga kapena kusankha, magetsi amaposa malire omwe LED imatha kupirira (pakali pano, nthawi yomweyo);Kutentha kosavomerezeka kwa zida zowunikira kungayambitse magetsi akufa ndi kuwola msanga.
6. Kuyika kwa fakitale
Ndikofunikira kuyang'ana ngati waya wonse wa fakitale uli bwino
7. Magetsi osasunthika
Magetsi osasunthika angayambitse kulephera kwa LED, ndipo tikulimbikitsidwa kuti tipewe ESD kuti isawononge ma LED.
A. Pakuyesa ndi kusonkhanitsa kwa LED, ogwira ntchito ayenera kuvala zibangili zotsutsana ndi static ndi magolovesi otsutsa-static.
B. Zida zowotcherera ndi zoyezera, matebulo ogwirira ntchito, zosungirako zosungirako, ndi zina zotero ziyenera kukhazikitsidwa bwino.
C. Gwiritsani ntchito chowombera cha ion kuti muchotse magetsi osasunthika omwe amapangidwa ndi kukangana panthawi yosungira ndi kusonkhanitsa kwa LED.
D. The zinthu bokosi khazikitsa LED utenga odana ndi malo amodzi zinthu bokosi, ndi ma CD thumba utenga electrostatic thumba.
E. Musakhale ndi malingaliro osinthasintha ndikugwirani ma LED mosasamala.
Zowopsa zomwe kuwonongeka kwa LED komwe kumayambitsa ESD kumaphatikizapo:
A. Kutayikira mobwerera m'mbuyo kungayambitse kuchepeka kwa kuwala pakanthawi kochepa, ndipo kuwala sikungayatse pakavuta kwambiri.
B. Mphamvu yamagetsi yakutsogolo imachepa.Kuwala kwa LED sikungatulutse kuwala pamene ikuyendetsedwa ndi magetsi otsika.
C. Kuwotcherera kosakwanira kunapangitsa kuti nyali isayatse.
Nthawi yotumiza: May-15-2023
