Izinhlobo eziningi zezinto zokusetshenziswa zokukhiqiza zisetshenziswa ekucubunguleni isichibi se-SMT. I-tinnote iyona ebaluleke kakhulu. Ikhwalithi yokunamathisela ithini izothinta ngqo ikhwalithi yokushisela yokucubungula isichibi se-SMT. Khetha izinhlobo ezahlukene zama-tinnuts. Ake ngethule kafushane ukuhlukaniswa okujwayelekile kwe-tin paste:
I-Weld paste iwuhlobo lwe-pulp yokuxuba impushana yokushisela ne-agent yokushisela efana ne-paste (i-rosin, i-diluent, stabilizer, njll.) ngomsebenzi oshiselwe. Ngokwesisindo, ama-80 ~ 90% angama-alloys ensimbi. Ngokwevolumu, insimbi ne-solder kubalwe ku-50%.
Umfanekiso 3 Namathisela ama-granules (SEM) (phezulu)
Umfanekiso 4 Umdwebo othize wekhava ye-tin powder (phansi)
I-solder paste ithwala izinhlayiya ze-tin powder. Ihlinzeka ngokuwohloka kokugeleza okufanele kakhulu kanye nomswakama ukuze kuthuthukiswe ukudluliswa kokushisa endaweni ye-SMT futhi kunciphise ukushuba kwesimo samanzi ku-weld. Izithako ezahlukene zibonisa imisebenzi ehlukene:
1. Ukuhlukaniswa ngokwezithako ze-tin paste
1. I-lead welding paste: iqukethe izingxenye eziholayo, eziyingozi emvelweni nasemzimbeni womuntu, kodwa umphumela we-welding muhle futhi izindleko ziphansi. Ingasetshenziswa kweminye imikhiqizo kagesi engenazo izidingo zokuvikelwa kwemvelo.
2. Inhlama ehlanganisiwe engenamthofu: Ingxenye ihambisana nemvelo futhi inobungozi obuncane. Isetshenziswa emikhiqizweni ye-elekthronikhi ehambisana nemvelo. Ngokuthuthukiswa kwezidingo zokuvikela imvelo ukuze kuvikelwe imvelo, ubuchwepheshe obungenamthofu embonini yokucubungula ye-SMT buzoba umkhuba.
2. Ukuhlukaniswa ngokwezinga lokuncibilika lokunamathisela ithini
Ngokuvamile, indawo encibilikayo yokunamathisela ithini ingahlukaniswa ibe izinhlobo ezintathu: izinga lokushisa eliphezulu, izinga lokushisa eliphakathi nendawo, nezinga lokushisa eliphansi.
Izinga lokushisa eliphakeme elivame ukusetshenziswa yi-SN-G-CU 305, 0307; izinga lokushisa eliphakathi line-SN-BI-AG; izinga lokushisa eliphansi elivame ukusetshenziswa i-SN-BI. Ekucutshungulweni kwesichibi se-SMT, udinga ukukhetha ngokuya ngezimpawu zomkhiqizo ezahlukahlukene.
3. Ihlukaniswe ngokucoleka kwe-tin powder
Ngokobubanzi bezinhlayiya ze-tin powder, i-tin paste ingahlukaniswa ibe pinks ka-1, 2, 3, 4, 5, kanye no-6, lapho u-3, 4, no-5 esetshenziswa kakhulu. Imikhiqizo enembile kakhulu, i-tin powder idinga ukuba ibe mncane, kodwa i-tin powder encane, ehambisana nendawo ye-oxidation ye-tin powder izokhula. Ngaphezu kwalokho, i-tin powder eyindilinga izosiza ukuthuthukisa izinga lokuphrinta.
No. 3 Fan: Inani lishibhile uma kuqhathaniswa, livame ukusetshenziswa ezinqubweni ezinkulu ze-SMT;
No. 4 Fan: Ngokuvamile isetshenziswa ekucubunguleni izinyawo eziqinile IC kanye nama-SMT chips;
I-Fan 5: Ivamise ukusetshenziselwa izinto zokushisela ezinembe kakhulu, omakhalekhukhwini, amaphilisi, njll., kanye nezidingo eziphezulu zezidingo eziphezulu; kunzima kakhulu ukucubungula umkhiqizo we-patch ye-SMT, kubaluleke kakhulu ukukhetha kwe-sacotic paste. Siza ukuthuthukisa inqubo ye-SMT patch processing.
Isikhathi sokuthumela: Jun-21-2023
