Ndezvipi Zvinodiwa Kudzora Tembiricha yeReflow Oven?

NeoDen IN12 Reflow Oven

1. Reflow ovhenimune yega yega tembiricha tembiricha uye cheni yekumhanyisa kugadzikana, inogona kuitwa mushure mechoto uye kuyedza tembiricha curve, kubva kunotonhora kutanga muchina kusvika kune yakagadzikana tembiricha kazhinji mu20 ~ 30 maminetsi.
2. Technicians eSMT yekugadzira tambo inofanirwa kurekodha tembiricha yekumisikidza uye cheni kumhanya zuva rega rega kana kune chimwe nechimwe chigadzirwa, uye kuitisa inodzorwa bvunzo yekuyera tembiricha yekuyera curve kuyerwa nguva nenguva kuti vatarise mashandiro akajairwa.reflow soldering.IPQC ichaita ongororo nekutarisa.
3. Lead-isina solder paste tembiricha curve kumisikidza zvinodiwa:
3.1 Kuiswa kwetembiricha curve kunonyanya kuenderana ne:
Iyo yakakurudzirwa curve yakapihwa neanotengeswa paste supplier.
B. PCB sheet zvinhu, saizi uye ukobvu.
C. Density uye ukuru hwezvikamu, nezvimwe.

3.2 Zvinodiwa zvekutungamira-isina cheto yekumisikidza tembiricha:
3.2.1.Iyo chaiyo yepamusoro tembiricha inodzorwa kubva pa243 ℃ kusvika 246 ℃, uye hapana BGA neQFN IC mukati me100 mavara, uye hapana chigadzirwa chine pad size mukati me3MM.
3.2.2.Kune zvigadzirwa zvine saizi yeIC, QFN, BGA nePAD pamusoro pe3MM uye pasi pe6MM, tembiricha yakayerwa ichadzorwa pa245-247 madhigirii.
3.2.3 Kune zvimwe zvakakosha PCB zvigadzirwa zvine IC, QFN, BGA kana PCB bhodhi ukobvu inopfuura 2MM uye PAD saizi inopfuura 6MM, iyo yakayerwa yepamusoro tembiricha inogona kudzorwa kubva pa247 kusvika 252 madhigirii zvinoenderana nezvinodiwa chaizvo.
3.2.4 Kana mahwendefa akakosha akadai seFPC yakapfava ndiro uye aluminium base ndiro kana zvikamu zvine zvakakosha zvinodiwa, zvinogadziriswa zvinoenderana nezvinodiwa chaizvo (mirayiridzo yemaitiro echigadzirwa yakakosha, iyo ichadzorwa zvinoenderana nemirairo yemaitiro)
Matauriro: Mukushanda chaiko, kana paine chisionekwi muchoto, maSMT matekiniki nemainjiniya vanopa mhinduro nekukurumidza.3.3 Zvinodiwa zvekutanga zvetembiricha curve:
A. Preheating zone: preheating slope is 1 ~ 3 ℃/SEC, uye tembiricha inosimudzwa kusvika 140 ~ 150 ℃.
B. Constant tembiricha zone: 150 ℃ ~ 200 ℃, kwemasekonzi 60 ~ 120
C. Reflux zone: pamusoro pe217℃ kwe40~90 seconds, ine peak value ye230~255℃.
D. Kutonhodza nzvimbo: kutonhora kutsetseka kuri pasi pe1 ~ 4 ℃/SEC (kunze kwePPC nealuminium substrate, tembiricha chaiyo inoenderana nemamiriro chaiwo)