Kugadziriswa kweSMT kuchaonekwa mamwe matambudziko emhando yakashata, akadai sekumira chiyeuchidzo, kunyange tin, solder isina chinhu, solder yenhema, nezvimwe .. Pane zvikonzero zvakawanda zvehutano husina kunaka, kana pane kudiwa kwekuongororwa kwakananga kwematambudziko chaiwo.
Nhasi newe kusuma iyo SMT kudhinda kunyangwe tin zvikonzero uye mhinduro.
Chii chinonzi SMT kunyange tin?
Kubva pachirevo chaicho chechirevo chetini chinogona kunzwisiswa zvakanaka, ingangoita mapedhi ari padyo anoonekwa akawandisa, magadzirirwo ekubatanidza, mapedhi akasiyana kana mitsetse, nemarata akawandisa akabatanidzwa pamwechete, anozivikanwawo seti bhiriji.
Izvi zvinotevera SMT kunyangwe tin zvikonzero uye kuvandudza matanho ekupikisa:.
1.Poor adhesion ye solder paste
Solder paste inogadzirwa nerata hupfu uye flux musanganiswa, mune isina kurongedzerwa isati yashandiswa ichaiswa mufiriji, kana ichidikanwa kushandisa, zvakakosha kuti udziye uye kurunga zvakaenzana pachine, kuoneka kunyange tin imhaka yehurombo viscosity. yenamira, inogona kunge yadzokera kune tembiricha kana kubvongodza nguva haina kukwana.
Matanho ekuvandudza
Usati washandisa, dziya paste kweanopfuura maminitsi makumi matatu uye fambisa zvakafanana kusvikira paste isingaputsi.Mafekitari akawanda uye akakura ari kushandisa akangwara solder paste manejimendi makabati, ayo anogona zvinobudirira kuvandudza dambudziko iri.
2.Stencil kuvhura haina kunyatsokwana
Stencil inofanirwa kushandiswa pakupeta, stencil ndiyo chaiyo pcb pad leak, inoda kugadzirwa ne pcb pad size uye saizi, nzvimbo, zvimwe zvirema zvekugadzira stencil, panogona kunge paine kuvhurika kwakanyanya, zvichikonzera kuvuza kwehuwandu hwe. printed solder paste yakawandisa, pane paste shift inokonzeresa even tin.
Kuvandudza matanho
Iyo stencil inoda kunyatsoongororwa inopesana neGerber faira, uye laser inofanira kushandiswa kuvhura stencil, nepo stencil kuvhura (kunyanya mapedhi ane pini) inofanira kunge iri kota diki pane iyo chaiyo padhi.
3.Solder paste kudhinda muchinakudhinda, pcb board inoratidzika yakasununguka
PCB mapedhi kudhinda solder paste, kudiwa kushandisa solder namatidza kudhinda muchina, solder namatidza kudhinda muchina ane tafura PCB solder namatidza kudhinda uye demoulding, muPCB pad solder namatidza kudhinda, PCB vanofanira kuendesa kutafura yakatarwa nzvimbo, uye kudiwa kwegadziriro yakagadziriswa pcb bhodhi, kana iyo nzvimbo yekutamisa kutsauka, gadziriro haina kusungirira pcb, ichaonekwa inodhinda dhizaini, gadzira kunyange tini.
Matanho ekuvandudza
Paunenge uchidhinda solder paste pane solder paste printer, unofanirwa kugadzirisa chirongwa pachine nguva kuitira kuti pcb kutamisa chinzvimbo chakarurama, uye gadziriso yacho inofanira kugara ichiongororwa uye kuchinjwa kuti igadziriswe.
Zvinhu zviri pamusoro apa, kuitira kudzivirira kuitika kwe tin uye humwe huipi hwakashata, zvinoda kuita basa rakanaka mukutanga proofing, asiwo kumashure kwemuchina wekudhinda kuwedzera a.SMT SPI muchina kuona, sezvinobvira kuderedza mwero wakashata.
Zvimiro zveNeoDen ND1stencil printer
Chinja nzira kuruboshwe - Kurudyi, Kurudyi - Kuruboshwe, Kuruboshwe - Kuruboshwe, Kurudyi - Kurudyi
Transmission mode Chikamu-mhando track
PCB clamp mode
Software inogadziriswa kudzvanywa kweiyo elastic side pressure
Sarudzo:
1. Pakazara pasi suction chamber vacuum
2. Pazasi multipoint chikamu vacuum
3. Mupendero wekiyi yekuvhara ndiro
Bhodhi nzira yekutsigira Magnetic thimble, yakakosha basa inobata mudziyo (sarudzo: Grid-Lok)
Nguva yekutumira: Feb-02-2023