Muchokwadi, SMT ine mhando dzakasiyana dzemhando dzimwe nguva dzinoonekwa, senge isina chinhu solder, nhema solder, kunyange tini, yakaputsika, yakashaikwa zvikamu, offset, nezvimwewo, matambudziko emhando dzakasiyana ane zvikonzero zvakafanana, kunewo zvikonzero zvakasiyana, nhasi tichataura. kwauri nezve SMT isina solder ndezvipi zvikonzero uye kuvandudza matanho ekupikisa.
Empty soldering zvinoreva kuti zvikamu, kunyanya izvo zvine mapini hazvisi kukwira tin, zvinonzi empty soldering, empty soldering ine zvinotevera 8 zvikonzero zvikuru:
1.Stencil isina kuvhurwa
Nekuti nzvimbo yepini yakanyanya kusimba, saka gomba rakanyanya, diki, kana gomba rekuvhura kwakashata kuchaita kuti panama haigone kudonhedza kana kudonhedza kudhindwa kushoma, zvichikonzera kuti padhi isina paste, soldering mushure mekuonekwa isina chinhu solder.
Solution: yakarurama yakavhurika stencil
2. Solder paste basa harina simba
Solder paste pachayo dambudziko basa harina simba, solder paste haisi nyore kupisa kunyungudika
Mhinduro: Tsiva iyo inoshanda solder paste
3. Scraper pressure yakakwirira
Solder paste kuti leak akadhindwa coating pamusoro pcb Mapedhi, kudiwa scraper shure uye mberi kukwesha zvakare, kana scraper kudzvinyirirwa uye kumhanya, solder namatidza leakage ichava shoma zvikuru, zvichiguma isina solder.
Solution: gadzirisa kudzvinyirirwa uye kukurumidza kwe scraper
4. Component pini warp deformation
Mamwe mapini akamonyoroka kana kuremara mukufamba, zvichikonzera kupisa kunopisa solder paste haikwanise kukwira tini, zvichikonzera kuti isina chinhu solder.
Solution: edza usati washandisa uye wozoshandisa
5. Tsvina kana oxidized pcb mhangura foil
Iyo pcb yemhangura foil yakasviba kana oxidised, zvichikonzera kusakara kwepini kukambaira, zvichitungamira kune isina chinhu soldering.
Countermeasures: pcb inofanira kushandiswa nekukurumidza sezvinobvira mushure mekuvhurwa, uye inofanira kubikwa uye kuongororwa isati yashandiswa.
6. Reflow soldering muchina preheat zone ichipisa nekukurumidza
Reflow soldering preheating zone kupisa nekukurumidza zvakanyanya, zvichiita kuti solder paste yakanyungudika munzvimbo yekudziya uye yekusongedza yabuda.
Solution countermeasures: isa inonzwisisika tembiricha tembiricha curve
7. SMT muchinacomponent placement offset
Nekuti nzvimbo yepini yakaoma kwazvo, kumwe kurongeka kwemuchina haugone kusvika, zvichitungamira pakuiswa kwekugadzirisa, kwete kuiswa kwepini kune yakasarudzwa padhi.
Solution countermeasures: tenga yakakwirira chaiyo mounter
8. Solder paste printing offset
Solder paste yekudhinda muchina wekudhinda offset, inogona kunge iri chikonzero che stencil, zvakare inogona kunge iri iyo clamp plate yakasununguka.
Solution: gadzirisa solder paste kudhinda muchina, gadzirisa Tafura tafura track fixture kugadzirisa.
Tsanangudzo yeNeoDen reflow oveni IN6
Smart control ine yakanyanya senitivity tembiricha sensor, tembiricha inogona kudzikamiswa mukati me + 0.2 ℃.
Yekutanga yepamusoro-inoshanda aluminium alloy yekudziya ndiro panzvimbo yekupisa pombi, zvese zvinochengetedza simba uye zvakanyanya-kushanda, uye transverse tembiricha musiyano uri pasi pe2 ℃.
Mafaira akati wandei anogona kuchengetwa, chinja zvakasununguka pakati peCelsius neFahrenheit, anochinjika uye ari nyore kunzwisisa.
Japan NSK hot-air motor bearings uye Swiss heat waya, yakasimba uye yakagadzikana.
Iyo tafura-yepamusoro dhizaini yechigadzirwa inoita kuti ive mhinduro yakakwana yemitsara yekugadzira ine zvakasiyana-siyana zvinodiwa.Yakagadzirwa nemukati otomatiki iyo inobatsira vashandisi kupa yakakwenenzverwa soldering.
Iyo dhizaini inoshandisa aluminium alloy kupisa ndiro iyo inowedzera simba-kushanda kweiyo system.Iyo yemukati yekusefa sisitimu inovandudza mashandiro echigadzirwa uye inoderedza zvinokuvadza kubuda, zvakare.
Mafaira anoshanda anochengeteka mukati meovheni, uye ese maCelsius neFahrenheit mafomati anowanikwa kune vashandisi.Ovheni inoshandisa magetsi 110/220V AC uye ine huremu hwakakura (G1) hwe57kg.
Nguva yekutumira: Zvita-29-2022