Umgomo wePCBA reflow solderingiyindlela evame ukusetshenziswa engaphezulu yokukhweza ukuze kuhlanganiswe izingxenye ze-elekthronikhi kumabhodi esekethe aphrintiwe (ama-PCB).

Umgomo we-reflow soldering usekelwe ezimisweni zokuqhuba ukushisa nokuncibilika kwezinto ze-solder.Okokuqala, unamathisele we-solder usetshenziswa ezindaweni ezifiselekayo zokudambisa ku-PCB.I-solder paste iqukethe ingxubevange yensimbi, ngokuvamile eyakhiwe ngomthofu, ithini, nezinye izinsimbi zamaphuzu ancibilikayo aphansi.

Bese, izingxenye ze-surface mount (SMD) zibekwe ngokunembile ku-solder paste.Okulandelayo, i-PCB nezingxenye zihlanganiswa ndawonye kuhhavini ogelezayo, lapho iphrofayili yezinga lokushisa ilawulwa khona.I-Reflow soldering idinga inqubo yokufudumeza nokupholisa ezigabeni ezimbili ezinkulu.Isigaba sokushisa: Izinga lokushisa liyenyuka kancane kancane, okwenza ukuthi i-solder paste iqale ukuncibilika.I-metallic alloy ku-solder paste iyancibilika futhi yakhe isimo se-liquid.

Phakathi nale nqubo, izinga lokushisa kufanele lifinyelele izinga elanele ukuqinisekisa ukuthi amalunga e-solder ayancibilika, kodwa hhayi phezulu kakhulu ukulimaza ezinye izingxenye kuhhavini lokugeleza kabusha noma isiteji se-PCB.Soldering: Ngenkathi i-solder paste iyancibilika, amalunga e-solder asungula ugesi. kanye nokuxhumana kwemishini phakathi kwePCB kanye nezingxenye.Lapho amajoyinti e-solder efinyelela izinga lokushisa elifanele, izinhlayiya zebhola lensimbi ku-solder paste ziqala ukwakha amabhola ethayela.Isigaba sokupholisa: Izinga lokushisa kuhhavini eligeleza kabusha liqala ukuncipha, okubangela ukuba inhlama ye-solder iphole ngokushesha futhi iqine, yakhe amalunga ezinzile.
Ngemva kokuba amalunga e-solder epholile, i-solder paste iyaqina futhi ixhume ngokuqinile i-PCB kanye nezingxenye ndawonye.Isihluthulelo sokuphinda sigeleze i-solder ukulawula iphrofayili yokushisa kuhhavini yokugeleza ukuze kuqinisekiswe ukuncibilika okuphelele kwe-solder paste, kanye nokuhlanganisa ama-solder yakha ukuxhumana okuthembekile nokuqinile ne-PCB nezingxenye.

Ukwengeza, ikhwalithi yokunamathisela kwe-solder iphinde ibe nomthelela kwikhwalithi ye-solder, ngakho-ke ukukhetha ukwakheka kwe-solder okunamathiselwe okufanelekile kubalulekile.Ngokufingqa, umgomo we-PCBA reflow sol.