Iindidi ezininzi zemveliso yemathiriyeli ekrwada zisetyenziswa kwi-SMT patch processing. I-tinnote yeyona ibaluleke ngakumbi. Umgangatho we-tin intlama uya kuchaphazela ngokuthe ngqo umgangatho we-welding we-SMT patch processing. Khetha iintlobo ezahlukeneyo ze-tinnuts. Mandikwazise ngokufutshane ulwahlulo oluqhelekileyo lwencama yetoti:
I-Weld paste luhlobo lwe-pulp yokuxuba i-weld powder kunye ne-agent-efana ne-welding agent (i-rosin, i-diluent, i-stabilizer, njl.) kunye nomsebenzi odibeneyo. Ngokobunzima, i-80 ~ 90% yi-alloys yensimbi. Ngokumalunga nomthamo, isinyithi kunye ne-solder zibalelwa kwi-50%.
Umfanekiso 3 Ishumi leegranuli zokucola (SEM) (phezulu)
Umfanekiso 4 Umzobo othe ngqo wenkcenkce yesigqubuthelo somphezulu womgubo (ezantsi)
I-solder paste ngumthuthi we-tin powder particles. Ibonelela ngeyona ndlela ifanelekileyo yokwehla kokuhamba kunye nokufuma ukukhuthaza ukuhanjiswa kobushushu kwindawo ye-SMT kunye nokunciphisa ukunyanzeliswa komphezulu wolwelo kwi-weld. Izithako ezahlukeneyo zibonisa imisebenzi eyahlukeneyo:
1. Ukuhlelwa ngokwezithako ze-tin paste
1. I-Lead welding paste: iqulethe izinto ezihamba phambili, ezinobungozi kwindalo kunye nomzimba womntu, kodwa umphumo we-welding ulungile kwaye iindleko ziphantsi. Ingasetyenziswa kwezinye iimveliso zombane ezingenazo iimfuneko zokhuseleko lokusingqongileyo.
2. I-lead-free welded intlama: Icandelo lihambelana nokusingqongileyo kwaye linengozi encinci. Isetyenziswa kwiimveliso ze-elektroniki ezihambelana nokusingqongileyo. Ngokuphuculwa kweemfuno zokhuseleko lokusingqongileyo kukhuseleko lokusingqongileyo, itekhnoloji engenalo i-lead-free kwishishini lokusetyenzwa kwe-SMT liya kuba ngumkhwa.
2. Ukuhlelwa ngokwendawo yokunyibilika yencama yetoti
Ngokubanzi, indawo yokunyibilika yencama yenkcenkce inokohlulwa ibe ziindidi ezintathu: ubushushu obuphezulu, ubushushu obuphakathi, kunye nobushushu obuphantsi.
Iqondo lokushisa eliqhelekileyo elisetyenziswayo yi-SN-G-CU 305, 0307; ubushushu obuphakathi bune-SN-BI-AG; ubushushu obuphantsi obusetyenziswa ngokuqhelekileyo SN-BI. Kwi-SMT patch processing, kufuneka ukhethe ngokweempawu ezahlukeneyo zemveliso.
3. Ukwahlulwe ngokobuncinci be-tin powder
Ngokobubanzi bamasuntswana omgubo we-tin, intlama ye-tin inokwahlulwa ibe zipinki zika-1, 2, 3, 4, 5, no-6, apho i-3, 4, kunye ne-5 isetyenziswa kakhulu. Iimveliso ezichanekileyo, i-tin powder kufuneka ibe yincinci, kodwa i-tin powder encinci, ehambelana nendawo ye-oxidation ye-tin powder iya kwanda. Ukongeza, i-tin powder ejikelezayo iya kunceda ukuphucula umgangatho wokushicilela.
No. 3 Fan: Ixabiso liphantsi, lidla ngokusetyenziswa kwiinkqubo ezinkulu ze-SMT;
No. 4 Umlandeli: Ngokuqhelekileyo isetyenziselwa ukulungiswa kweenyawo eziqinileyo ze-IC kunye ne-SMT chips;
I-Fan 5: Ihlala isetyenziselwa izinto ezichanekileyo ze-welding, iifowuni eziphathwayo, iipilisi, njl., kunye neemfuno eziphezulu zeemfuno eziphezulu; kunzima ngakumbi ukucubungula imveliso ye-SMT patch, kubaluleke kakhulu ukhetho lwe-sacotic paste. Nceda ukuphucula inkqubo ye-SMT patch processing.
Ixesha lokuposa: Jun-21-2023
