1. Kev Taw Qhia
Ua ib kauj ruam tseem ceeb hauv cov txheej txheem SMT, reflow soldering ua lub luag haujlwm txiav txim siab hauv kev txiav txim siab qhov kev ntseeg tau thiab lub neej ntawm cov khoom siv hluav taws xob. Raws li IPC-J-STD-020, kev tsim khoom siv hluav taws xob niaj hnub xav tau kev tswj qhov kub thiab txias ntawm ± 5 ° C. Hauv cov khoom siv xws li tsheb hluav taws xob (AEC-Q100) thiab aerospace (MIL-STD-883), qhov zoo ntawm kev vuam cuam tshuam ncaj qha rau kev nyab xeeb ntawm cov khoom thiab kev ua tau zoo.
2. Cov Ntsiab Cai ntawm Cov Txheej Txheem thiab Cov Ntsiab Lus Tseem Ceeb
Kev siv cov khoom siv rov ua dua tshiab ua rau cov pob qij txha ruaj khov los ntawm cov qauv thermal tswj tau. Cov yam ntxwv tseem ceeb suav nrog:
- ·Tus Nqi Cua Sov: 1–3°C/s (kom tsis txhob muaj kev kub ntxhov)
- ·Kub Tshaj Plaws: 20–40 ° C siab dua qhov chaw yaj ntawm cov hlau nplaum (feem ntau yog 235–245 ° C rau SnAgCu)
- ·Lub Sijhawm Saum Liquidus (TAL): 30–90 vib nas this
- ·Tus Nqi Txias: 1–4 ° C / s (los txhim kho cov qauv sib koom ua ke)
3. Cov Kev Siv Txuj Ci Tseem Ceeb
3.1 Kev Txhim Kho Qhov Kub thiab Txias
- ·Siv KIC thermal profile nrog 6–12 channel real-time saib xyuas.
- ·Xyuas kom meej qhov chaw ntawm lub rooj tsavxwm ΔT thiab NQI .
- ·Cov kev tshawb fawb SMTA qhia tau hais tias cov qauv thermal zoo tshaj plaws tuaj yeem txo cov teeb meem soldering los ntawm 60% (Tsev Kawm Ntawv Theem Siab, 2021).
3.2 Kev Tswj Huab Cua
- ·Kev Tiv Thaiv Nitrogen: TUS2 kev sib xyaw ua ke Daim Ntawv Tshaj Tawm Kev Tshawb Fawb Heller).
- ·Kev Sib Hloov Cua Kub: Kev tswj cua ntsawj (0.5–1.5 m/s) ua kom muaj kev hloov pauv cua sov sib xws.
3.3 Cov Kev Ntsuas Kev Ua Haujlwm ntawm Cov Khoom Siv
| Hom/Qauv | Thaj Chaw Kub | Kev Tswj Kub Precision | Kev Siv Nitrogen | Cov yam ntxwv |
|---|---|---|---|---|
| Heller 1910 | 12 | ±1°C | 15m³/teev | Huab cua kub ob zaug |
| Rehm V9 | 10 | ±1.5°C | 12m³/teev | Lub tshuab nqus tsev rov ua dua tshiab |
| Jutuo JS-800 | 8 | ±2°C | 18m³/teev | Kev txias ntse |
4. Lub Txheej Txheem Kev Ntsuam Xyuas Zoo
4.1 Kev Saib Xyuas Txheej Txheem
- ·Kev tshuaj xyuas SPC tiag tiag: CRP ≥ 1.33
- ·Kev txheeb xyuas dua qhov profile thermal: Txhua 4 teev
- ·Kev tshuaj xyuas X-ray: Xyuas kom meej tias qhov zoo ntawm kev sib koom ua ke IPC-A-610 cov qauv
4.2 Kev Txheeb Xyuas Kev Ntseeg Tau
- ·Kub Caij Tsheb Kauj Vab: -40 ° C txog 125 ° C, 1000 lub voj voog
- ·Kev co tshuab: 20–2000Hz, kev sim 3-axis
- ·Kev Tshawb Fawb Txog Metallography: IMC (intermetallic compound) tuab 2–5μm
5. Cov Ntaub Ntawv Thov Kev Lag Luam
- ·Cov Khoom Siv Hluav Taws Xob Hauv Tsheb: Ua tau raws li cov qauv kev ntxhov siab thermal 3000-cycle.
- ·Cov Khoom Siv Kho Mob: Tau ntawv pov thawj raws li ISO 13485 rau kev taug qab cov txheej txheem thiab kev ntseeg tau.
- ·5G Kev Sib Txuas Lus: Xyuas kom meej tias lub teeb liab muaj kev ncaj ncees nrog kev kho kom zoo dua qub rau cov qauv sib koom ua ke rau mmWave modules.
6. Cov Lus Qhia Tseem Ceeb: Lub Hauv Paus ntawm Kev Siv Reflow Soldering Uas Muaj Kev Ntseeg Siab
- ·Kev tswj hwm thermal profile meej
- ·Kev ua haujlwm ruaj khov thiab ua haujlwm tau zoo ntawm cov khoom siv
- ·Kev soj ntsuam zoo tag nrho thiab kev lees paub qhov tseeb
Nrog kev tswj cov txheej txheem tsis tu ncua, cov chaw tsim khoom tuaj yeem ua tiav cov txiaj ntsig reflow soldering ≥99.9%, ncav cuag cov qib zoo thiab kev sib xws hauv kev lag luam.
Cov ntaub ntawv siv los ua piv txwv
- 1.IPC-J-STD-020E, 2020
- 2. Daim Ntawv Dawb Txog Kev daws teeb meem ntawm Heller Process, 2022
- 3. Cov Txheej Txheem Thoob Ntiaj Teb ntawm SMTA, 2021
- 4.MIL-STD-883H, 2019
- 5.AEC-Q100 Rev-H, 2014
