Ubwoko bwinshi bwibikoresho fatizo bikoreshwa mugutunganya ibicuruzwa bya SMT. Tinnote nimwe mubyingenzi. Ubwiza bwa tin paste buzagira ingaruka kuburyo butaziguye bwo gusudira kwa SMT. Hitamo ubwoko butandukanye bwa tinnuts. Reka mbamenyeshe muri make amabati asanzwe:
Isupu ya Weld ni ubwoko bwa pulp yo kuvanga ifu yo gusudira hamwe na paste imeze nka paste (rosin, diluent, stabilisateur, nibindi) hamwe numurimo wo gusudira. Kubijyanye n'uburemere, 80 ~ 90% ni ibyuma bivangwa n'ibyuma. Kubijyanye nubunini, ibyuma nugurisha bingana na 50%.
Igishushanyo cya 3 paste granules (SEM) (ibumoso)
Igishushanyo 4 Igishushanyo cyihariye cya pine yifu yubusa (iburyo)
Umugurisha paste nuwitwara amabati yifu. Itanga uburyo bwiza bwo kwangirika nubushuhe kugirango bitezimbere ubushyuhe mukarere ka SMT kandi bigabanye uburemere bwamazi hejuru ya weld. Ibikoresho bitandukanye byerekana imirimo itandukanye:
Solvent:
Umuti wibi bikoresho weld wongeyeho bifite uburyo bumwe bwo guhinduranya byikora muburyo bwo gukora tin paste, bigira ingaruka zikomeye kubuzima bwa paste weld.
Resin:
Ifite uruhare runini mukwongera ifatizo rya tin paste no gusana no gukumira PCB kongera kwangiza nyuma yo gusudira. Ibigize shingiro bifite uruhare runini mugukosora ibice.
Murwanashyaka:
Ifite uruhare rwo gukuraho ibintu bya okiside ya PCB yumuringa wa firime ya PCB hamwe nigice cya SMT patch, kandi bifite ingaruka zo kugabanya ubukana bwubutaka bwamabati hamwe nisukari.
④ Ihema:
Guhindura mu buryo bwikora ubwiza bwa paste weld ifite uruhare runini mugucapa kugirango wirinde umurizo no gufatana.
Ubwa mbere, ukurikije ibigize abagurisha paste
1, isasu ryagurishijwe paste: ririmo ibice byangiza, byangiza cyane ibidukikije numubiri wumuntu, ariko ingaruka zo gusudira ni nziza, kandi nigiciro ni gito, irashobora gukoreshwa mubicuruzwa bimwe na bimwe bya elegitoronike bidasabwa kurengera ibidukikije.
2, kugurisha ibicuruzwa bidafite isuku: ibirungo bitangiza ibidukikije, ibyangiritse bike, bikoreshwa mubicuruzwa bya elegitoroniki bitangiza ibidukikije, hamwe no kunoza ibisabwa by’ibidukikije by’igihugu, ikoranabuhanga ridafite ubuhinzi mu nganda zitunganya smt bizaba inzira.
Icya kabiri, ukurikije gushonga ingingo yo kugurisha paste
Muri rusange, ingingo yo gushonga ya paste yagurishijwe irashobora kugabanywa mubushyuhe bwo hejuru, ubushyuhe bwo hagati n'ubushyuhe buke.
Ubushyuhe bukunze gukoreshwa ni Sn-Ag-Cu 305.0307; Sn-Bi-Ag yabonetse mubushyuhe bwo hagati. Sn-Bi isanzwe ikoreshwa mubushyuhe buke. Muri SMT gutunganya ibicuruzwa bigomba guhitamo ukurikije ibicuruzwa bitandukanye biranga.
Bitatu, ukurikije ubwiza bwo kugabana amabati
Ukurikije umubyimba wa diameter yifu y amabati, paste yamabati irashobora kugabanywamo ibyiciro 1, 2, 3, 4, 5, 6 byifu yifu, muribwo ifu ya 3, 4, 5 niyo ikoreshwa cyane. Nibicuruzwa byinshi cyane, guhitamo ifu y amabati bigomba kuba bito, ariko uko ifu yamabati iba ntoya, agace ka okiside ihuye nifu y amabati iziyongera, kandi ifu yizunguruka ifasha kuzamura ireme ryicapiro.
No 3 ifu: Igiciro kirahendutse, gikunze gukoreshwa mubikorwa binini bya smt;
No 4 ifu: ikunze gukoreshwa mumaguru magufi IC, gutunganya chip chip;
No 5 ifu: Akenshi ikoreshwa mubikoresho byo gusudira neza, terefone igendanwa, tableti nibindi bicuruzwa bisaba; Kurenza uko bigoye gutunganya ibicuruzwa bya smt, niko guhitamo guhitamo kugurisha ibicuruzwa, nuguhitamo ibicuruzwa byagurishijwe kubicuruzwa bifasha kunoza uburyo bwo gutunganya smt.
Igihe cyo kohereza: Jul-05-2023
