NeoDen IN12 tanda mai juyawa
Flux wani muhimmin abu ne na taimako a cikin waldawar allo na PCBA.Ingancin juzu'i zai shafi ingancin kai tsayereflow tanda.Bari mu bincika dalilin da ya sa juyi yake da mahimmanci.
1. ka'idar walda mai juyi
Flux na iya ɗaukar tasirin walda, saboda ƙwayoyin ƙarfe suna kusa da juna bayan yaduwa, rushewa, kutsewa da sauran tasirin.Bugu da ƙari, buƙatar saduwa da kawar da oxides da gurɓataccen abu a cikin aikin kunnawa, amma kuma don saduwa da rashin lalacewa, rufi, juriya na danshi, kwanciyar hankali, rashin lahani, tsabta da sauran bukatun.Gabaɗaya magana, manyan abubuwan da ke tattare da shi sune wakili mai aiki, fim - ƙirƙirar abubuwa, ƙari, kaushi da sauransu.
2. Cire oxide a saman welded karfe
A cikin yanayin iska na yau da kullun, sau da yawa akan sami wasu oxides akan saman ƙarfe na kushin walda.Wadannan oxides za su yi wani tasiri a kan wetting na solder a lokacin walda tsari, wanda zai shafi walda tsarin da waldi sakamakon.reflow soldering inji.Saboda haka, juyi yana buƙatar samun damar rage oxides, kuma ana iya aiwatar da walda na sarrafa PCBA akai-akai.
3. Rigakafin oxidation na biyu
A cikin tsarin walda na sarrafa PCBA, ana buƙatar dumama.Duk da haka, a cikin tsarin dumama, saurin iskar oxygen zai faru a kan saman karfe saboda karuwar zafin jiki.A wannan lokacin, ana buƙatar juzu'i don taka rawa wajen hana oxidation na biyu.
4. Rage tashin hankali na narkakken solder
Saboda sigar jiki, narkakkar solder surface zai sami wani tashin hankali, da kuma surface tashin hankali zai kai ga gudun solder kwarara zuwa walda surface ya shafi al'ada wetting a cikin walda tsari, da kuma aiki na juyi a wannan. lokaci shine don rage tashin hankali na saman solder na ruwa, ta yadda za a iya inganta wettability sosai.
Lokacin aikawa: Agusta-13-2021