Pedzisa PCB SMT Gungano Maitiro Kuyerera

PCB SMT gungano inzira inoshandiswa zvakanyanya yegungano yekugadzira Yakadhindwa Circuit Boards. Inosanganisira kukwirisa zvinhu zvemagetsi zvakanangana pamusoro pePCBs, zvichiita kuti inyatsoita kugadzirwa kwemazhinji kana ichienzaniswa neyakajairwa Kuburikidza neHole Assembly nzira. Heano kutarisisa kwakadzama kwePCB SMT musangano maitiro.

Dhinda Solder Paste

Nhanho yekutanga muPCB SMT musangano process ndeye kushandisa solder paste kuPCB. Stencil inoshandiswa kunyatsoisa paste chete pamapadhi panozoiswa zvikamu. Iyi paste inoshanda seanonamira uye solder sosi yekubatanidza zvinhu.

Kufamba kwakakwana kweSMT kunofanirawo kutsanangura kuti mafaira, zvikamu, stencil, kuiswa, kuyererazve, AOI, uye kugadzirisazve zvinobatana sei nehurongwa hwakakura. PCB musangano sevhisi uye kumusoro chikamu chekutsvaga.

Sarudza uye Isa SMT Chikamu

Kana iyo solder paste yaiswa, pamusoro pegomo zvikamu zvinoiswa pabhodhi. Izvi zvinoitwa uchishandisa automated pick-and-place machines, iyo inoisa nenzira kwayo chikamu chimwe nechimwe pane yakatemerwa solder paste pads.

Solder Paste Inspection (SPI)

Mushure meiyo solder paste application uye isati yaiswa chikamu, Solder Paste Inspection inoitwa. Iyi nhanho inovimbisa kuti solder paste inoshandiswa nemazvo - kutarisa huwandu hwakakodzera, chimiro, uye kuiswa. SPI inobatsira kudzivirira zvirema zvekutengesa zvinogona kuitika panguva yekuyerera.

Reflow Soldering

Mukugadzirisazve solder, iyo PCB ine zvikamu zvakaiswa inopfuudzwa muovheni reflow. Ovheni inopisa gungano kusvika painonyungudika solder paste uye inogadzira majoini akasimba ekutengesa, achibatanidza zvachose zvikamu pabhodhi.

Post-Reflow Inspection

Mushure me reflow soldering, iyo PCB inoongororwa kuti ive nechokwadi chekuti zvikamu zvese zvakatengeswa nemazvo. Automated Optical Inspection (AOI) kana X-ray inspection inowanzo shandiswa nechinangwa ichi kuona chero zvirema zvekusota semabhiriji, kusakwana solder, kana kuti component misalignment.

AOI yePCB SMT musangano

Masisitimu eAOI anoshandisa makamera ane gadziriso yepamusoro kutarisa maPCB kuti aone mhando dzakasiyana dzekukanganisika senge zvikanganiso zvekutengesa, zvisipo kana kuti zvakarasika, uye kumwe kukanganisa kugadzira.

X-ray kuongororwa kwePCB SMT musangano

Kuongorora kweX-ray kunogona kuona kuburikidza nemateru ePCB, kuona zvakavanzwa zvakakanganisika senge voids mumajoini anotengeswa, bridging, uye solder mhando nyaya mukati meBall Grid Arrays (BGAs), Micro BGA, uye chip scale mapakeji.

Kuongorora Kwekupedzisira uye Kuedzwa

Ichi chikamu chinosanganisira kunyatsoongorora uye kushanda kwePCB. Inova nechokwadi chekuti bhodhi rinosangana nezvose zvinodiwa uye riri kushanda sezvinodiwa. Danho iri rinogona kusanganisira macheki emaoko uye bvunzo dzakasiyana dzemagetsi.

Kuchenesa uye Packaging

Nhanho yekupedzisira ndeyekuchenesa PCB kubvisa chero yasara solder flux kana zvinosvibisa. Mushure mekuchenesa, iyo PCB yakanyatsorongedzwa kuti itumirwe kana kuendeswa kune inotevera nhanho yekugadzira kana kusangana.

gungano reBGA rakatsetseka uye kugadzirwa kwePCB yemuenzaniso, izvo zvinogona kubatsira kudzivirira manotsi asina kujeka mupakeji yekotesheni.