Kodi Zofunikira Zowongolera Kutentha kwa Reflow Oven ndi Chiyani?

NeoDen IN12 Reflow Oven

1. Reflow uvunim'dera lililonse kutentha kutentha ndi unyolo kukhazikika liwiro, akhoza kuchitidwa pambuyo ng'anjo ndi kuyesa kutentha pamapindikira, kuchokera ozizira kuyamba makina kutentha khola kawirikawiri 20 ~ 30 mphindi.
2. Akatswiri a chingwe chopangira ma SMT amayenera kujambula kutentha kwa ng'anjo ndi liwiro la unyolo tsiku lililonse kapena pa chinthu chilichonse, ndikuyesa kuyezetsa kowongolera kutentha kwa ng'anjo nthawi zonse kuti azitha kuyang'anira momwe ntchito ikuyendera.reflow soldering.IPQC idzachita kuyendera ndi kuyang'anira.
3. Zofunikira pakukhazikitsa kopindika kopindika kwa solder wopanda lead:
3.1 Kuyika kwa curve kutentha kumatengera:
Njira yokhotakhota yoperekedwa ndi solder paste supplier.
B. PCB pepala zakuthupi, kukula ndi makulidwe.
C. Kachulukidwe ndi kukula kwa zigawo, etc.

3.2 Zofunikira pakuyika kutentha kwa ng'anjo yopanda lead:
3.2.1.Kutentha kwenikweni kwapamwamba kumayendetsedwa kuchokera ku 243 ℃ mpaka 246 ℃, ndipo palibe BGA ndi QFN IC mkati mwa mawanga 100, ndipo palibe mankhwala okhala ndi pad kukula mkati mwa 3MM.
3.2.2.Pakuti mankhwala ndi kukula kwa IC, QFN, BGA ndi PAD pamwamba 3MM ndi pansi 6MM, kuyeza pachimake kutentha adzakhala lizilamulira pa madigiri 245-247.
3.2.3 Kwa mankhwala ena apadera PCB ndi IC, QFN, BGA kapena PCB bolodi makulidwe oposa 2MM ndi PAD kukula kuposa 6MM, kuyeza pachimake kutentha akhoza kulamulidwa kuchokera 247 mpaka 252 madigiri malinga ndi zosowa zenizeni.
3.2.4 Pamene mbale zapadera monga FPC zofewa mbale ndi aluminiyamu m'munsi mbale kapena mbali ndi zofunika zapadera, izo zidzasinthidwa malinga ndi kufunika kwenikweni (mankhwala ndondomeko malangizo apadera, amene azidzalamuliridwa motsatira ndondomeko malangizo)
Ndemanga: Pantchito yeniyeniyo, ngati pali vuto lililonse mung'anjo, akatswiri a SMT ndi mainjiniya adzapereka ndemanga posachedwa.3.3 Zofunikira zoyambira kutentha kopindika:
A. Preheating zone: otsetsereka preheating ndi 1 ~ 3 ℃/SEC, ndipo kutentha kwakwezedwa 140 ~ 150 ℃.
B. Nthawi zonse kutentha zone: 150 ℃ ~ 200 ℃, kwa masekondi 60 ~ 120
C. Reflux zone: pamwamba pa 217 ℃ kwa 40 ~ 90 masekondi, ndi mtengo wapamwamba wa 230 ~ 255 ℃.
D. Malo ozizira: otsetsereka ozizira ndi ochepera 1 ~ 4 ℃/SEC (kupatula PPC ndi aluminium gawo lapansi, kutentha kwenikweni kumadalira momwe zinthu zilili)