"Kuyeretsa" nthawi zambiri amanyalanyazidwa mu PCBA kupanga ndondomeko matabwa dera, ndipo amaona kuti kuyeretsa si sitepe yovuta. Komabe, pogwiritsa ntchito mankhwalawa kwa nthawi yayitali kumbali ya kasitomala, mavuto omwe amayamba chifukwa cha kuyeretsa kosagwira ntchito koyambirira kumayambitsa zolephera zambiri, kukonza kapena Zomwe zimakumbukiridwa zapangitsa kuti pakhale kuwonjezeka kwakukulu kwa ndalama zogwirira ntchito. Pansipa, Heming Technology ifotokoza mwachidule ntchito ya PCBA yoyeretsa matabwa ozungulira.

Kupanga kwa PCBA (msonkhano wadera wosindikizidwa) kumadutsa magawo angapo, ndipo gawo lililonse limayipitsidwa ndi magawo osiyanasiyana. Choncho, madipoziti zosiyanasiyana kapena zosafunika kukhala padziko gulu dera PCBA. zoipitsa izi kuchepetsa mankhwala Magwiridwe, ndipo ngakhale kulephera mankhwala. Mwachitsanzo, popanga zida zamagetsi zamagetsi, solder phala, flux, etc. amagwiritsidwa ntchito pothandizira othandizira. Pambuyo pa soldering, zotsalira zimapangidwa. Zotsalirazo zimakhala ndi ma organic acid ndi ayoni. Pakati pawo, ma organic acid adzawononga bolodi la PCBA. Kukhalapo kwa ma ion amagetsi kungayambitse kagawo kakang'ono ndikupangitsa kuti chinthucho chilephereke.

Pali mitundu yambiri ya zoipitsa pa bolodi dera PCBA, amene akhoza mwachidule m'magulu awiri: ionic ndi sanali ionic. Zowonongeka za Ionic zimakumana ndi chinyezi m'chilengedwe, ndipo kusamuka kwa electrochemical kumachitika pambuyo pa magetsi, kupanga mapangidwe a dendritic, zomwe zimapangitsa kuti pakhale njira yochepetsera, ndikuwononga ntchito ya PCBA ya bolodi la dera. Zowonongeka zopanda ma ionic zimatha kulowa muchitetezo cha PC B ndikukulitsa ma dendrites pansi pa PCB. Kuwonjezera pa ionic ndi sanali ionic zoipitsa, palinso zoipitsa granular, monga mipira solder, mfundo zoyandama mu kusamba solder, fumbi, fumbi, etc. Zoipitsa izi zingachititse khalidwe la olowa solder kuchepetsedwa, ndi solder. olowa akuthwa pamene soldering. Zochitika zosiyanasiyana zosafunika monga pores ndi mafupipafupi.

Pokhala ndi zowononga zambiri, ndi ziti zomwe zili ndi nkhawa kwambiri? Flux kapena solder paste imagwiritsidwa ntchito kwambiri popangira ma reflow soldering ndi ma wave soldering. Amapangidwa makamaka ndi zosungunulira, zonyowetsa, ma resins, corrosion inhibitors ndi activator. Zinthu zosinthidwa ndi thermally ziyenera kukhalapo pambuyo pa soldering. Zinthu izi Pankhani ya kulephera kwazinthu, zotsalira zowotcherera pambuyo ndizofunika kwambiri zomwe zimakhudza mtundu wazinthu. Zotsalira za Ionic zimatha kuyambitsa electromigration ndikuchepetsa kukana kwa kutchinjiriza, ndipo zotsalira za rosin ndizosavuta kutsatsa Fumbi kapena zonyansa zimapangitsa kukana kukhudzana kuchulukirachulukira, ndipo zikavuta kwambiri, zingayambitse kulephera kwa dera. Choncho, kuyeretsa okhwima ayenera kuchitidwa pambuyo kuwotcherera kuonetsetsa khalidwe la dera bolodi PCBA.

Mwachidule, kuyeretsa kwa board board PCBA ndikofunikira kwambiri. "Kuyeretsa" ndi njira yofunika yokhudzana mwachindunji ndi khalidwe la gulu la dera PCBA ndipo ndilofunika kwambiri.