Mfundo yaPCBA reflow solderingndi njira yomwe imagwiritsidwa ntchito kwambiri pakuyika zida zamagetsi pama board osindikizidwa (PCBs).

Mfundo ya reflow soldering imachokera pa mfundo za kutentha kwa kutentha ndi kusungunuka kwa zinthu za solder.Choyamba, phala la solder limagwiritsidwa ntchito ku malo omwe amafunidwa pa PCB.Phala la solder limakhala ndi aloyi yachitsulo, yomwe nthawi zambiri imakhala ndi lead, malata, ndi zitsulo zina zotsika kwambiri zosungunuka.

Kenaka, zigawo za pamwamba (SMD) zimayikidwa molondola pa solder paste.Kenako, PCB ndi zigawo zikuluzikulu zimadutsa mu uvuni wobwereranso, kumene mbiri ya kutentha imayendetsedwa.Reflow soldering imafuna kutentha ndi kuzizira mu magawo awiri akuluakulu.Kutentha siteji: Kutentha kumakwera pang'onopang'ono, kuchititsa kuti phala la solder liyambe kusungunuka.The zitsulo aloyi mu solder phala amasungunuka ndi kupanga dziko madzi.

Panthawiyi, kutentha kumayenera kufika pamlingo wokwanira kuti zitsimikizidwe kuti zida zowonongeka zimasungunuka, koma osati kwambiri kuti ziwononge zigawo zina mu uvuni wa reflow kapena PCB.Soldering siteji: Pamene phala la solder likusungunuka, ma solder amakhazikitsa magetsi. ndi kugwirizana makina pakati paPCB ndi zigawo.Zolumikizana zogulitsira zikafika pa kutentha koyenera, tinthu tating'onoting'ono ta mpira wachitsulo mu phala la solder timayamba kupanga mipira ya malata.Kuzizira: Kutentha mu uvuni wa reflow kumayamba kuchepa, zomwe zimapangitsa kuti phala la solder lizizizira komanso kulimba, kupanga zolumikizana zokhazikika.
Pambuyo pazitsulo za solder zitakhazikika, phala la solder limalimbitsa ndikugwirizanitsa mwamphamvu PCB ndi zigawo pamodzi. Chinsinsi cha reflow soldering ndi kulamulira mbiri ya kutentha mu ng'anjo yowonongeka kuti zitsimikizidwe kusungunuka kwathunthu kwa phala la solder, ndi zolumikizira za solder. kupanga maulalo odalirika komanso olimba ndi PCB ndi zigawo zake.

Kuonjezera apo, khalidwe la solder phala kumakhudzanso khalidwe la soldering, kotero kusankha yoyenera solder phala chiphunzitso ndi zofunika.Mwachidule, mfundo PCBA reflow sol.