Mukugadzirisa kweSMT, PCB substrates isati yatanga kugadziriswa, PCB inotariswa nekuedzwa, yakasarudzwa kuti isangane nezvinodiwa zvekugadzirwa kweSMT zvePCB, uye vasina kukodzera vakadzorerwa kumutengesi wePCB, izvo zvinodiwa nePCB zvinogona kutumirwa IPc-a-610c International General Electronics Industry Assembly Standards, zvinotevera zvimwe zvezvakakosha zveSMT kugadzirisa kwePCB.
1. Iyo PCB inofanirwa kuve yakati sandara uye yakatsetseka
PCB general zvinodiwa flat uye yakatsetseka, haigone kuchinjika, kana mune solder paste kudhinda uye SMT muchina kuiswa kunoburitsa kukuvadza kukuru, semhedzisiro yekutsemuka.
2. The thermal conductivity
Mune reflow solder muchina uye wave solder muchina, pachange paine preheat nzvimbo, kazhinji yekupisa PCB zvakaenzana, uye kune imwe tembiricha, zvirinani kudziya kwekupisa kwePCB substrate, kuburitsa kushomeka kwakashata.
3. Kudzivisa kupisa
Nekuvandudzwa kweSMT process uye zvinodiwa zvezvakatipoteredza, lead-yemahara process yakashandiswawo zvakanyanya, asi zvakare yakakonzerwa nekukwira kwekushisa kwewelding, kupisa kwekupisa kwePCB kwakakwira zvinodiwa, lead-isina process mu reflow soldering, tembiricha inofanirwa. kusvika 217 ~ 245 ℃, nguva inotora 30 ~ 65s, saka mukuru PCB kupisa kuramba kusvika 260 madhigirii Celsius, uye okupedzisira 10s zvinodiwa.
4. Kubatanidzwa kwemhangura foil
Simba rekubatanidza refoil yemhangura rinofanira kusvika 1.5kg/cm² kudzivirira PCB kubva pakudonha nekuda kwemasimba ekunze.
5. Kupeta mitemo
PCB ine mamwe maitiro ekukotama, kazhinji kuwana anopfuura 25kg/mm
6. Good magetsi conductivity
PCB semutakuri wemagetsi zvinoriumba, kuwana chinongedzo pakati pezvikamu, kuvimba nemitsetse yePCB kuitisa, PCB haifanire kunge ine yakanaka yemagetsi conductivity, uye mitsetse yePCB yakaputsika haigone kunyatso chigamba, kana kuita kwechigadzirwa chose. zvichaunza mufaro mukuru.
7. Inogona kumira kushambidza kwe solvent
PCB mukugadzirwa, nyore kuwana tsvina, kazhinji vanofanira kugeza bhodhi mvura uye zvimwe zvinonyungudutsa kuchenesa, saka PCB anofanira kukwanisa kutsungirira solvent washing, pasina kubudisa mafuro uye zvimwe zvakaipa kuita.
Izvi ndizvo zvimwe zvezvakakosha zvinodiwa zvePCB inokwanisa muSMT kugadzirisa.
Nguva yekutumira: Mar-11-2022