Mu kuwotcherera awiri wosanjikiza bolodi dera, n'zosavuta ndi vuto adhesion kapena kuwotcherera pafupifupi. Ndipo chifukwa cha kuwonjezeka wapawiri-wosanjikiza zigawo gulu gulu, mtundu uliwonse wa zigawo zikuluzikulu zofunika kuwotcherera zofunika kuwotcherera kutentha ndi zina zotero sizili zofanana, zomwe zimabweretsanso kuwonjezereka kwa vuto la kuwotcherera wapawiri wosanjikiza gulu dera, kuphatikizapo dongosolo kuwotcherera. mu mankhwala ena ali ndi zofunika okhwima.

Njira yowotcherera mbali ziwiri za board board:

Konzani zida ndi zida, kuphatikiza matabwa ozungulira, zigawo, solder, solder phala, ndi chitsulo chosungunulira.

Tsukani pamwamba pa bolodi ndi zikhomo: Yeretsani pamwamba pa bolodi ndi zikhomo ndi zotsukira kapena mowa kuti muwonetsetse kuti zowotcherera zili zabwino komanso zodalirika.

Zigawo za malo: Ikani zigawo pa bolodi la dera malinga ndi zofunikira za mapangidwe a bolodi la dera, kumvetsera malangizo ndi malo a zigawozo.

Ikani solder phala: Ikani solder phala pa padi pa chigawo zikhomo ndi dera bolodi kukonzekera kuwotcherera.

Zida zowotcherera: Gwiritsani ntchito chitsulo chowotchera chamagetsi kuti muwotcherera zigawo, tcherani khutu kuti kutentha ndi nthawi yokhazikika, pewani kutentha kwambiri kapena nthawi yowotcherera ndi yayitali kwambiri.

Chongani kuwotcherera khalidwe: onani ngati kuwotcherera mfundo ndi olimba ndi zonse, ndipo palibe kuwotcherera pafupifupi, kuwotcherera kutayikira ndi zochitika zina.

Kukonza kapena kuwotcherera: Pamalo owotcherera omwe ali ndi vuto la kuwotcherera, kukonzanso kapena kuwotcherera kumafunika kuti zitsimikizire mtundu wa kuwotcherera komanso kudalirika.

Mfundo 1 yowotcherera pa bolodi yozungulira:

The kusankha kuwotcherera ndondomeko zikuphatikizapo: flux kupopera mbewu mankhwalawa, dera bolodi preheating, kuviika kuwotcherera ndi kuukoka kuwotcherera. Njira yokutira Flux Njira yokutira ya flux imakhala ndi gawo lofunikira pakuwotcherera kosankha.

Kumapeto kwa kuwotcherera Kutentha ndi kuwotcherera, flux iyenera kukhala yogwira mokwanira kuti iteteze kubadwa kwa Bridges ndikuletsa makutidwe ndi okosijeni a bolodi ladera. Kupopera mbewu mankhwalawa The bolodi amanyamulidwa ndi X/Y manipulator pa chotuluka nozzle, ndi flux ndi sprayed pa pcb bolodi kuwotcherera udindo.

Mfundo 2 yowotcherera bolodi yozungulira:

Pakuti microwave nsonga kusankha kuwotcherera pambuyo reflow soldering ndondomeko, ndikofunika kuti flux molondola sprayed ndi microporous kutsitsi mtundu sangadetse dera kunja olowa solder.

Malo awiri a micro-malo kupopera madzi flux ndi wamkulu kuposa 2mm, kotero malo olondola a flux waikamo pa bolodi dera ndi ± 0.5mm, kuti kuonetsetsa kuti flux nthawi zonse yokutidwa pa kuwotcherera mbali.

Njira 3 yowotcherera bolodi yozungulira:

The ndondomeko makhalidwe kuwotcherera kusankha tingamvetse poyerekeza ndi yoweyula soldering, kusiyana n'zoonekeratu pakati pa awiriwa ndi kuti m'munsi mwa bolodi dera mu kuwotcherera yoweyula kwathunthu kumizidwa mu solder madzi, pamene kuwotcherera kusankha, kokha madera ena enieni. amalumikizana ndi solder wave.

Popeza bolodi dera lokha ndi osauka kutentha kutengerapo sing'anga, izo sizidzakhala kutentha ndi kusungunula olowa solder m'dera moyandikana ndi zigawo zikuluzikulu ndi dera bolodi pamene kuwotcherera.

Flux iyeneranso kuphimbidwa kale isanawotchedwe, ndipo poyerekeza ndi kutenthedwa kwa mafunde, flux imakutidwa pamunsi pa bolodi kuti ipangike, osati bolodi lonse la pcb.

Kuphatikiza apo, kuwotcherera kosankhidwa kumangogwiritsidwa ntchito pakuwotcherera zigawo za pulagi, kuwotcherera kosankha ndi njira yatsopano, komanso kumvetsetsa bwino njira yosankha kuwotcherera ndi zida ndikofunikira kuti pakhale kuwotcherera bwino.

Kuwotcherera kwa bolodi loyang'ana mbali ziwiri kuyenera kuchitika motsatira njira zomwe zanenedwa, kulabadira chitetezo ndi kuwongolera khalidwe, ndikuonetsetsa kuti kuwotcherera ndi kudalirika.

Kuwotchera kwa board board kwapawiri kumafunika kulabadira zinthu izi:

Musanayambe kuwotcherera, yeretsani bolodi lozungulira ndi zikhomo kuti muwonetsetse kuti zowotcherera zili zabwino komanso zodalirika.

Malinga ndi kapangidwe ka bolodi la dera, sankhani zida zoyenera zowotcherera ndi zida, monga solder, solder phala, ndi zina.

Musanayambe kuwotcherera, tengani njira za ESD, monga kuvala mphete za ESD, kuteteza kuwonongeka kwa electrostatic kuzinthuzo.

Sungani kutentha kosasunthika ndi nthawi yowotcherera kuti mupewe kutentha kwambiri kapena nthawi yayitali yowotcherera, kuti musawononge bolodi kapena zigawo zikuluzikulu.

Njira yowotcherera nthawi zambiri imachitika motsatira dongosolo la zida kuchokera kumunsi kupita kumtunda komanso kuchokera ku zazing'ono mpaka zazikulu. Chofunika kwambiri ndi kuwotcherera tchipisi tating'onoting'ono.

Pambuyo kuwotcherera kumalizidwa, fufuzani khalidwe la kuwotcherera ndi kudalirika. Ngati pali cholakwika chilichonse, konzani kapena kuwotchereranso munthawi yake.

Mu ntchito kuwotcherera kwenikweni, kuwotcherera wa mbali ziwiri mbali bolodi dera ayenera mosamalitsa kutsatira ndondomeko yoyenera ndondomeko ndi zofunika ntchito kuonetsetsa khalidwe ndi kudalirika kwa kuwotcherera, pamene kulabadira ntchito otetezeka kupewa zoipa okha ndi ozungulira. chilengedwe.