Mazhinji marudzi ekugadzira zvigadzirwa zvinoshandiswa muSMT chigamba kugadzirisa. Iyo tinnote ndiyo inonyanya kukosha. Hunhu hwema tin paste huchakanganisa zvakananga kunaka kwekushongedza kweSMT chigamba kugadzirisa. Sarudza marudzi akasiyana ematinnuts. Rega ndizivise muchidimbu iyo yakajairwa tin paste classification:
Weld paste imhando ye pulp yekusanganisa weld powder ne paste -like welding agent (rosin, diluent, stabilizer, etc.) ine welded function. Panyaya yehuremu, 80 ~ 90% isimbi alloys. Panyaya yehuwandu, simbi uye solder yakaverengera 50%.
Mufananidzo 3 Gumi namatidza granules (SEM) (kumusoro)
Mufananidzo 4 Yakananga dhayagiramu yerata yehupfu pamusoro pekuvhara (pasi)
Solder paste ndiyo inotakura tin powder zvidimbu. Inopa iyo yakanyatso kuyerera kuyerera uye humidity kukurudzira kupisa kutapurirana kune SMT nzvimbo uye kuderedza tension yemvura pane weld. Zvigadzirwa zvakasiyana zvinoratidza mabasa akasiyana:
1. Kurongeka zvichienderana nemidziyo yemarata paste
1. Lead welding paste: ine zvinotungamira zvikamu, izvo zvinokuvadza kune zvakatipoteredza uye muviri wemunhu, asi welding mhedzisiro yakanaka uye mutengo wakaderera. Inogona kuiswa kune zvimwe zvigadzirwa zvemagetsi izvo zvisina zvinodiwa pakuchengetedzwa kwezvakatipoteredza.
2. Lead-free welded paste: Chikamu chacho chinoshamwaridzana nenharaunda uye chine kukuvadza kuduku. Inoshandiswa mune zvakatipoteredza zvemagetsi zvigadzirwa. Nekuvandudzwa kwezvinodiwa zvekuchengetedzwa kwezvakatipoteredza kuchengetedza kwezvakatipoteredza, lead-yemahara tekinoroji muSMT yekugadzirisa indasitiri inozova maitiro.
2. Kurongeka zvichienderana nenzvimbo yakanyunguduka yerata paste
Kazhinji kutaura, nzvimbo yekunyungudika yerata paste inogona kukamurwa kuita mhando nhatu: tembiricha yepamusoro, tembiricha yepakati, uye yakaderera tembiricha.
Iyo inowanzoshandiswa tembiricha yepamusoro ndeye SN-G-CU 305, 0307; tembiricha yepakati ine SN-BI-AG; tembiricha yakaderera inowanzoshandiswa SN-BI. MuSMT chigamba kugadzirisa, unofanirwa kusarudza zvinoenderana neakasiyana chigadzirwa maitiro.
3. Yakakamurwa maererano nekunaka kwehupfu hwetin
Maererano nehupamhi hwezvikamu zvehupfu hwerata, tin paste inogona kupatsanurwa kuita pinks ye1, 2, 3, 4, 5, uye 6, iyo 3, 4, uye 5 ndiyo inonyanya kushandiswa. Izvo zvigadzirwa zvakanyatsojeka, hupfu hwetini hunoda kuva diki, asi hudiki hupfu hwetini, hunoenderana nenzvimbo yeoxidation yehupfu huchawedzera. Mukuwedzera, iyo yakapoteredza tin poda ichabatsira kuvandudza kunaka kwekudhinda.
No. 3 Fan: Mutengo wacho wakachipa, unowanzo shandiswa mumaitiro makuru eSMT;
Nha. 4 Fan: Inowanzoshandiswa mukugadzirisa tsoka dzakaoma IC uye SMT chips;
Fan 5: Inowanzo shandiswa kune chaiyo chaiyo welding zvinhu, mbozha nhare, mahwendefa, nezvimwewo, uye zvakakwirira zvinodikanwa zvepamusoro-zvinodikanwa; zvakanyanya kuoma kugadzirisa chigadzirwa che SMT patch, iyo inonyanya kukosha kusarudzwa kwesacotic paste. Batsira kuvandudza maitiro eSMT chigamba kugadzirisa.
Nguva yekutumira: Jun-21-2023
