1. Nhanganyaya
Sedanho rakakosha mukuita kweSMT, kusundidzirazve simbi mumagetsi kunoita basa guru mukuona kuvimbika uye hupenyu hwezvigadzirwa zvemagetsi. IPC-J-STD-020, kugadzirwa kwemagetsi kwemazuva ano kunoda kurongeka kwekupisa kwe±5°C. Muzvikamu zvakaita semagetsi emotokari (AEC-Q100) uye ndege (MIL-STD-883), kunaka kwekusungirirwa kwesimbi kunokanganisa zvakananga kuchengetedzeka kwezvigadzirwa uye mashandiro azvo.
2. Nheyo dzeMaitiro uye Pfungwa Dzinokosha dzekudzora
Kubatanidzazve kunoumba majoini ekubatanidza akagadzikana kuburikidza nemaprofiles ekupisa anodzorwa. Zvinhu zvikuru zvinosanganisira:
- ·Mwero wekudziyisa: 1–3°C/s (kudzivirira kupisa)
- ·Kupisa kwakanyanya: 20–40°C pamusoro penzvimbo yekunyunguduka kwesolder (kazhinji 235–245°C yeSnAgCu)
- ·Nguva Pamusoro peLiquidus (TAL): Masekondi 30–90
- ·Mwero wekutonhodza: 1–4°C/s (yekugadzirisa magadzirirwo emusanganiswa wesolder)
3. Maitiro Akakosha Ehunyanzvi
3.1 Kugadzirisa Tembiricha Yedu
- ·Inoshandisa KIC thermal profiler ine 6–12 channels real-time monitoring.
- ·Inovimbisa pamusoro pebhodhi ΔT uye MUTENGO .
- ·Zvidzidzo zveSMTA zvinoratidza kuti mapurofayiri ekupisa akagadziridzwa anogona kuderedza zvikanganiso zvekusungirirwa kwesimbi ne60% (Chikoro Chesekondari, 2021).
3.2 Kudzora Mhepo
- ·Kudzivirirwa kweNitrogen: ZVINO2 Kuwanda kwemvura Mushumo weKutsvagurudza kwaHeller).
- ·Kutenderedza Mhepo Inopisa: Kufamba kwemhepo kwakadzorwa (0.5–1.5 m/s) kunoita kuti kupisa kupfuure zvakaenzana.
3.3 Mashandiro Emidziyo
| Brand/Model | Nzvimbo dzeTemp | Kudzora Nguva Yekudzora | Kushandiswa kweNitrogen | Zvinhu zvirimo |
|---|---|---|---|---|
| Heller 1910 | 12 | ±1°C | 15m³/awa | Mhepo inopisa inoyerera kaviri |
| Rehm V9 | 10 | ±1.5°C | 12m³/awa | Kuyererazve kwevacuum |
| Jutuo JS-800 | 8 | ±2°C | 18m³/awa | Kutonhodza kwakangwara |
4. Sisitimu Yekusimbisa Hunhu
4.1 Kutarisa Maitiro
- ·Kuongorora kweSPC munguva chaiyo: CRP ≥ 1.33
- ·Kuongororwazve kweprofile yekupisa: Maawa mana ega ega
- ·Kuongorora X-ray: Inovimbisa mhando yejoini yesolder pa IPC-A-610 mitemo
4.2 Kusimbiswa Kwekuvimbika
- ·Kutenderera kweTembiricha: -40°C kusvika 125°C, macycles chiuru
- ·Kudedera kweMichina: 20–2000Hz, bvunzo ye3-axis
- ·Kugadzira Metallography: Ukobvu hweIMC (intermetallic compound) 2–5μm
5. Nyaya dzeKushandiswa kweIndasitiri
- ·Zvemagetsi zveMotokari: Inosangana nezvinodiwa zvekupisa zvinosvika 3000-cycle.
- ·Zvishandiso Zvekurapa: Yakabvumidzwa pasi peISO 13485 yekutevera maitiro uye kuvimbika.
- ·Kutaurirana kwe5G: Inovimbisa kuvimbika kwechiratidzo nekushandisa geometry yakagadzirisika yejoini yesolder yemamodule emmWave.
6. Pfupiso: Nheyo dzeHigh-Reliability Reflow Soldering
- ·Kudzora kwakanyatsojeka kweprofile yekupisa
- ·Kushanda kwemidziyo kwakagadzikana uye kunoshanda zvakanaka
- ·Kutarisa kwemhando yepamusoro uye kuvimbika kwechokwadi
Nekudzora maitiro kwakarongeka, vagadziri vanogona kuwana goho rekuchinjisa mvura zvakare ≥99.9%, kusvika padanho repamusoro remhando uye kugara kwenguva refu.
Mareferensi
- 1.IPC-J-STD-020E, 2020
- 2. Pepa Rekuchenesa reHeller Process Solutions, 2022
- 3. Nyaya dzeSMTA dzepasi rose, 2021
- 4.MIL-STD-883H, 2019
- 5.AEC-Q100 Rev-H, 2014
