High mwatsatanetsatane PCBA dera bolodi DIP pulagi-in kusankha yoweyula solder kamangidwe ayenera kutsatira zofunika!
Pamisonkhano yanthawi zonse yamagetsi, ukadaulo wowotcherera wamafunde nthawi zambiri umagwiritsidwa ntchito kuwotcherera zigawo zosindikizidwa za board zomwe zimakhala ndi perforated insert element (PTH).
DIP wave soldering ili ndi zovuta zambiri:
1. Zigawo za SMD zapamwamba kwambiri, zomveka bwino sizingagawidwe pamtunda wowotcherera;
2. Pali zambiri zomangira mlatho komanso zosoweka;
3.Flux iyenera kupopera; bolodi losindikizidwa limapindika ndikupunthwa ndi kugwedezeka kwakukulu kwa kutentha.
Pamene kachulukidwe ka msonkhano wadera kakuchulukirachulukira, n'zosapeŵeka kuti zigawo za SMD zokhala ndi kachulukidwe kwambiri, zomveka bwino zigawidwe pazitsulo. Njira yachikhalidwe yopangira ma wave soldering yakhala yopanda mphamvu kuchita izi. Nthawi zambiri, zigawo za SMD pa soldering pamwamba zimatha kugulitsidwanso padera. , ndiyeno kukonza pamanja otsala pulagi-mu solder olowa, koma pali vuto osauka solder olowa khalidwe kusasinthasintha.
Pamene soldering wa zigawo zikuluzikulu za dzenje (makamaka lalikulu-mphamvu kapena bwino phula zigawo zikuluzikulu) kumakhala kovuta kwambiri, makamaka kwa mankhwala opanda kutsogolera ndi mkulu kudalirika zofunika, soldering khalidwe la soldering Buku sangathenso kukumana apamwamba. zida zamagetsi. Malinga ndi zofunikira pakupanga, ma wave soldering sangathe kukwaniritsa kupanga ndi kugwiritsa ntchito magulu ang'onoang'ono ndi mitundu ingapo yogwiritsidwa ntchito mwapadera. Kugwiritsiridwa ntchito kwa soldering yosankha mafunde kwakula mofulumira m'zaka zaposachedwa.
Pakuti matabwa PCBA dera okha zigawo zikuluzikulu THT perforated, chifukwa yoweyula soldering luso akadali kwambiri processing njira panopa, si koyenera kuti m'malo yoweyula soldering ndi soldering kusankha, chimene chili chofunika kwambiri. Komabe, kusankha soldering ndikofunikira pama board osakanikirana aukadaulo ndipo, kutengera mtundu wa nozzle womwe umagwiritsidwa ntchito, njira zowotchera mafunde zitha kubwerezedwanso mokongola.
Pali njira ziwiri zosiyana zopangira soldering: kukoka soldering ndi dip soldering.
Kusankha kokakokera kosunthika kumachitidwa pa nsonga imodzi yaying'ono ya solder wave. Njira yopangira kukoka ndiyoyenera kugulitsa pamipata yolimba kwambiri pa PCB. Mwachitsanzo: zolumikizira za solder kapena zikhomo, mzere umodzi wa zikhomo ukhoza kukokedwa ndikugulitsidwa.
Ukadaulo wa Selective wave soldering ndiukadaulo womwe wangopangidwa kumene muukadaulo wa SMT, ndipo mawonekedwe ake amakwaniritsa zofunikira zamagulu a PCB osakanizika kwambiri komanso osiyanasiyana. Selective wave soldering ili ndi ubwino woyika pawokha magawo olumikizana ndi solder, kugwedezeka pang'ono kwa PCB, kupopera mankhwala pang'ono, komanso kudalirika kolimba. Pang'onopang'ono ikukhala ukadaulo wofunikira kwambiri wama PCB ovuta.
Monga tonse tikudziwa, gawo la mapangidwe a board a PCBA limatsimikizira 80% ya mtengo wopangira zinthu. Momwemonso, makhalidwe ambiri abwino amakhazikika pa nthawi yopanga. Chifukwa chake, ndikofunikira kwambiri kuti tiganizire mozama zinthu zopanga mu dongosolo la mapangidwe a board a PCB.
A DFM wabwino ndi njira yofunika kwambiri kwa PCBA mounting chigawo opanga kuchepetsa zofooka kupanga, kuphweka njira kupanga, kufupikitsa mkombero kupanga, kuchepetsa ndalama zopangira, kukhathamiritsa kulamulira khalidwe, kumapangitsanso kupikisana msika mankhwala, ndi kusintha kudalirika kwa mankhwala ndi durability. Zitha kuthandiza mabizinesi kupeza phindu labwino kwambiri ndi ndalama zochepa kwambiri ndikupeza zotsatira zake kawiri ndi theka la khama.
Kukula kwa zigawo za pamwamba mpaka lero kumafuna kuti akatswiri a SMT asamangokhala aluso paukadaulo wopanga ma board board, komanso kukhala ndi chidziwitso chozama komanso luso laukadaulo la SMT. Chifukwa mlengi amene samvetsa otaya makhalidwe a solder phala ndi solder zambiri zovuta kumvetsa zifukwa ndi mfundo za bridging, tipping, tombstone, wicking, etc., ndipo n'zovuta kugwira ntchito mwakhama kupanga pedi chitsanzo momveka. Ndizovuta kuthana ndi zovuta zamapangidwe osiyanasiyana potengera kupangika, kuyeserera, komanso kutsika mtengo komanso kuchepetsa ndalama. Yankho lopangidwa mwangwiro lidzawononga ndalama zambiri zopangira ndi kuyesa ngati DFM ndi DFT (mapangidwe ozindikira) ali osauka.
