Menene Bukatun Kula da Zazzabi na Maimaita Tanda?

NeoDen IN12 Reflow Tanda

1. Maimaita tandaa cikin kowane zafin jiki yankin zafin jiki da sarkar gudun kwanciyar hankali, za a iya za'ayi bayan tanderun da kuma gwada zafin jiki kwana, daga sanyi fara inji zuwa barga zafin jiki yawanci a cikin 20 ~ 30 minutes.
2. Technicians na SMT samar line dole ne rikodin tanderu zafin jiki saitin da sarkar gudun kowace rana ko ga kowane samfurin, da kuma gudanar da sarrafawa gwajin tanderu zafin kwana kwana akai-akai don saka idanu da al'ada aiki na.reflow soldering.IPQC za ta gudanar da dubawa da kulawa.
3. Abubuwan buƙatun saitin manna zafin jiki mara gubar solder:
3.1 Saitin yanayin zafin jiki ya dogara ne akan:
Shawarwar lanƙwasa wanda mai siyar da manna ya samar.
B. PCB takardar abu, girman da kauri.
C. Yawa da girman abubuwan da aka gyara, da dai sauransu.

3.2 Abubuwan bukatu don saitin zafin tanderu mara gubar:
3.2.1.Ana sarrafa ainihin zafin jiki mafi girma daga 243 ℃ zuwa 246 ℃, kuma babu BGA da QFN IC a cikin tabo 100, kuma babu samfur tare da girman kushin cikin 3MM.
3.2.2.Don samfuran da girman IC, QFN, BGA da PAD sama da 3MM da ƙasa da 6MM, za a sarrafa ma'aunin zafin jiki a 245-247 digiri.
3.2.3 Don wasu samfuran PCB na musamman tare da IC, QFN, BGA ko PCB kauri fiye da 2MM da girman PAD fiye da 6MM, ana iya sarrafa ma'aunin zafi mai zafi daga 247 zuwa digiri 252 bisa ga ainihin bukatun.
3.2.4 Lokacin da faranti na musamman irin su FPC taushi farantin karfe da aluminum tushe farantin ko sassa suna da bukatu na musamman, shi za a gyara bisa ga ainihin bukatar (ka'idojin tsari samfurin ne na musamman, wanda za a sarrafa bisa ga tsari umarnin)
Bayani: A cikin ainihin aiki, idan akwai wani rashin daidaituwa a cikin tanderun, masu fasaha na SMT da injiniyoyi za su ba da amsa nan da nan.3.3 Abubuwan buƙatu na asali na lanƙwan zafin jiki:
A. Preheating yankin: da preheating gangara ne 1 ~ 3 ℃ / SEC, da kuma yawan zafin jiki da aka tashe zuwa 140 ~ 150 ℃.
B. Yankin zafin jiki na dindindin: 150 ℃ ~ 200 ℃, don 60 ~ 120 seconds
C. Reflux zone: sama 217 ℃ na 40 ~ 90 seconds, tare da ganiya darajar 230 ~ 255 ℃.
D. Cooling yankin: gangara mai sanyaya ƙasa da 1 ~ 4 ℃ / SEC (sai dai PPC da aluminum substrate, ainihin zafin jiki ya dogara da ainihin halin da ake ciki)